/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 21:36:50,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 21:36:50,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 21:36:51,016 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 21:36:51,016 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 21:36:51,027 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 21:36:51,030 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 21:36:51,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 21:36:51,036 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 21:36:51,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 21:36:51,040 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 21:36:51,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 21:36:51,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 21:36:51,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 21:36:51,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 21:36:51,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 21:36:51,052 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 21:36:51,053 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 21:36:51,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 21:36:51,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 21:36:51,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 21:36:51,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 21:36:51,069 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 21:36:51,070 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 21:36:51,075 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-27 21:36:51,075 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-27 21:36:51,076 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-27 21:36:51,079 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-27 21:36:51,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-27 21:36:51,082 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-27 21:36:51,082 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-27 21:36:51,083 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-27 21:36:51,084 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-27 21:36:51,084 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-27 21:36:51,086 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-27 21:36:51,086 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-27 21:36:51,087 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-27 21:36:51,087 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-27 21:36:51,088 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 21:36:51,089 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 21:36:51,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 21:36:51,091 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 [2020-08-27 21:36:51,144 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 21:36:51,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 21:36:51,147 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 21:36:51,147 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 21:36:51,147 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 21:36:51,148 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 21:36:51,148 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 21:36:51,148 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 21:36:51,148 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 21:36:51,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 21:36:51,150 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 21:36:51,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 21:36:51,150 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 21:36:51,151 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 21:36:51,151 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 21:36:51,151 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 21:36:51,151 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 21:36:51,152 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 21:36:51,152 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 21:36:51,152 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 21:36:51,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 21:36:51,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:36:51,153 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 21:36:51,153 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 21:36:51,153 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 21:36:51,153 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 21:36:51,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 21:36:51,154 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 21:36:51,154 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 21:36:51,154 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 -> false [2020-08-27 21:36:51,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 21:36:51,611 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 21:36:51,616 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 21:36:51,618 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 21:36:51,618 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 21:36:51,619 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product46.cil.c [2020-08-27 21:36:51,698 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3756922bf/97f5a04daba845dfa5abe38aa09bc6ad/FLAG1631c6e77 [2020-08-27 21:36:52,274 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 21:36:52,277 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product46.cil.c [2020-08-27 21:36:52,299 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3756922bf/97f5a04daba845dfa5abe38aa09bc6ad/FLAG1631c6e77 [2020-08-27 21:36:52,614 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3756922bf/97f5a04daba845dfa5abe38aa09bc6ad [2020-08-27 21:36:52,627 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 21:36:52,629 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 21:36:52,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 21:36:52,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 21:36:52,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 21:36:52,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:36:52" (1/1) ... [2020-08-27 21:36:52,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64fec7e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:52, skipping insertion in model container [2020-08-27 21:36:52,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:36:52" (1/1) ... [2020-08-27 21:36:52,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 21:36:52,706 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 21:36:53,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:36:53,272 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 21:36:53,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:36:53,421 INFO L208 MainTranslator]: Completed translation [2020-08-27 21:36:53,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:53 WrapperNode [2020-08-27 21:36:53,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 21:36:53,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 21:36:53,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 21:36:53,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 21:36:53,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:53" (1/1) ... [2020-08-27 21:36:53,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:53" (1/1) ... [2020-08-27 21:36:53,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:53" (1/1) ... [2020-08-27 21:36:53,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:53" (1/1) ... [2020-08-27 21:36:53,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:53" (1/1) ... [2020-08-27 21:36:53,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:53" (1/1) ... [2020-08-27 21:36:53,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:53" (1/1) ... [2020-08-27 21:36:53,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 21:36:53,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 21:36:53,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 21:36:53,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 21:36:53,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:53" (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 [2020-08-27 21:36:53,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 21:36:53,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 21:36:53,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-27 21:36:53,627 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-27 21:36:53,627 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-27 21:36:53,627 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-27 21:36:53,628 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-27 21:36:53,628 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-27 21:36:53,628 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-27 21:36:53,629 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-27 21:36:53,629 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-27 21:36:53,629 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-27 21:36:53,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-27 21:36:53,630 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-27 21:36:53,630 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-27 21:36:53,631 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-27 21:36:53,631 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-27 21:36:53,632 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-27 21:36:53,632 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-27 21:36:53,632 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-27 21:36:53,632 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-27 21:36:53,632 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-27 21:36:53,633 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-27 21:36:53,633 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-27 21:36:53,633 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 21:36:53,634 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-27 21:36:53,634 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-27 21:36:53,634 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-27 21:36:53,634 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-27 21:36:53,634 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-27 21:36:53,634 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-27 21:36:53,635 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-27 21:36:53,635 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-27 21:36:53,635 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-27 21:36:53,635 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-27 21:36:53,636 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-27 21:36:53,636 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-27 21:36:53,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-27 21:36:53,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-27 21:36:53,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-27 21:36:53,636 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-27 21:36:53,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 21:36:53,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-27 21:36:53,637 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-27 21:36:53,637 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-27 21:36:53,637 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-27 21:36:53,637 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-27 21:36:53,637 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-27 21:36:53,638 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-27 21:36:53,638 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-27 21:36:53,638 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-27 21:36:53,638 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-27 21:36:53,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-27 21:36:53,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-27 21:36:53,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-27 21:36:53,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-27 21:36:53,639 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-27 21:36:53,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-27 21:36:53,639 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-27 21:36:53,640 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-27 21:36:53,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-27 21:36:53,640 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-27 21:36:53,640 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-27 21:36:53,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-27 21:36:53,641 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-27 21:36:53,641 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-27 21:36:53,641 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-27 21:36:53,641 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-27 21:36:53,641 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-27 21:36:53,641 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-27 21:36:53,642 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-27 21:36:53,642 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-27 21:36:53,643 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-27 21:36:53,643 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-27 21:36:53,643 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-27 21:36:53,643 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-27 21:36:53,644 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-27 21:36:53,644 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-27 21:36:53,644 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-27 21:36:53,645 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-27 21:36:53,645 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 21:36:53,645 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-27 21:36:53,646 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-27 21:36:53,646 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-27 21:36:53,646 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-27 21:36:53,646 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-27 21:36:53,646 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-27 21:36:53,647 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-27 21:36:53,647 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-27 21:36:53,647 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-27 21:36:53,648 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-27 21:36:53,648 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-27 21:36:53,648 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-27 21:36:53,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 21:36:53,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-27 21:36:53,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 21:36:54,686 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 21:36:54,687 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-27 21:36:54,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:36:54 BoogieIcfgContainer [2020-08-27 21:36:54,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 21:36:54,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 21:36:54,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 21:36:54,699 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 21:36:54,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:36:52" (1/3) ... [2020-08-27 21:36:54,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e7ca5f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:36:54, skipping insertion in model container [2020-08-27 21:36:54,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:36:53" (2/3) ... [2020-08-27 21:36:54,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e7ca5f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:36:54, skipping insertion in model container [2020-08-27 21:36:54,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:36:54" (3/3) ... [2020-08-27 21:36:54,704 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product46.cil.c [2020-08-27 21:36:54,716 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 21:36:54,728 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 21:36:54,751 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 21:36:54,784 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 21:36:54,784 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 21:36:54,784 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 21:36:54,784 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 21:36:54,784 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 21:36:54,785 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 21:36:54,785 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 21:36:54,785 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 21:36:54,815 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-08-27 21:36:54,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-27 21:36:54,827 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:36:54,828 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:36:54,829 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:36:54,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:36:54,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1550424879, now seen corresponding path program 1 times [2020-08-27 21:36:54,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:36:54,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603669492] [2020-08-27 21:36:54,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:36:55,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:55,631 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:36:55,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:36:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:55,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:36:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:55,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:36:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:55,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:36:55,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:55,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:36:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:55,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:36:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:55,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-27 21:36:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:55,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-27 21:36:55,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:55,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:36:55,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603669492] [2020-08-27 21:36:55,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:36:55,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 21:36:55,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076871448] [2020-08-27 21:36:55,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 21:36:55,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:36:55,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 21:36:55,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-27 21:36:55,779 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 4 states. [2020-08-27 21:36:57,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:36:57,064 INFO L93 Difference]: Finished difference Result 312 states and 407 transitions. [2020-08-27 21:36:57,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-27 21:36:57,067 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-27 21:36:57,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:36:57,086 INFO L225 Difference]: With dead ends: 312 [2020-08-27 21:36:57,086 INFO L226 Difference]: Without dead ends: 174 [2020-08-27 21:36:57,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-27 21:36:57,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-08-27 21:36:57,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 139. [2020-08-27 21:36:57,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-27 21:36:57,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 164 transitions. [2020-08-27 21:36:57,199 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 164 transitions. Word has length 51 [2020-08-27 21:36:57,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:36:57,200 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 164 transitions. [2020-08-27 21:36:57,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 21:36:57,200 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 164 transitions. [2020-08-27 21:36:57,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-27 21:36:57,204 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:36:57,205 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:36:57,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 21:36:57,205 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:36:57,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:36:57,206 INFO L82 PathProgramCache]: Analyzing trace with hash 2147140265, now seen corresponding path program 1 times [2020-08-27 21:36:57,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:36:57,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777529933] [2020-08-27 21:36:57,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:36:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:57,590 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:36:57,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:36:57,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:57,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:36:57,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:57,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:36:57,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:57,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:36:57,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:57,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:36:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:57,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:36:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:57,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:36:57,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:57,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-27 21:36:57,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:57,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:36:57,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777529933] [2020-08-27 21:36:57,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:36:57,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-27 21:36:57,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452816223] [2020-08-27 21:36:57,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-27 21:36:57,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:36:57,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-27 21:36:57,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-27 21:36:57,705 INFO L87 Difference]: Start difference. First operand 139 states and 164 transitions. Second operand 5 states. [2020-08-27 21:36:58,185 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:36:59,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:36:59,287 INFO L93 Difference]: Finished difference Result 253 states and 314 transitions. [2020-08-27 21:36:59,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-27 21:36:59,287 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-27 21:36:59,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:36:59,291 INFO L225 Difference]: With dead ends: 253 [2020-08-27 21:36:59,291 INFO L226 Difference]: Without dead ends: 164 [2020-08-27 21:36:59,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-27 21:36:59,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-08-27 21:36:59,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 130. [2020-08-27 21:36:59,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-27 21:36:59,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 152 transitions. [2020-08-27 21:36:59,341 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 152 transitions. Word has length 52 [2020-08-27 21:36:59,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:36:59,341 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 152 transitions. [2020-08-27 21:36:59,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-27 21:36:59,342 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 152 transitions. [2020-08-27 21:36:59,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-27 21:36:59,344 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:36:59,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:36:59,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-27 21:36:59,345 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:36:59,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:36:59,345 INFO L82 PathProgramCache]: Analyzing trace with hash 871775649, now seen corresponding path program 1 times [2020-08-27 21:36:59,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:36:59,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460176413] [2020-08-27 21:36:59,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:36:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:59,830 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:36:59,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:36:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:59,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:36:59,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:59,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:36:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:59,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:36:59,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:59,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:36:59,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:59,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:36:59,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:59,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-27 21:36:59,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:59,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-27 21:36:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:36:59,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:36:59,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460176413] [2020-08-27 21:36:59,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:36:59,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-27 21:36:59,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62498227] [2020-08-27 21:36:59,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-27 21:36:59,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:36:59,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-27 21:36:59,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-27 21:36:59,977 INFO L87 Difference]: Start difference. First operand 130 states and 152 transitions. Second operand 9 states. [2020-08-27 21:37:00,364 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:37:00,721 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:37:01,056 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:37:01,372 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:37:02,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:37:02,867 INFO L93 Difference]: Finished difference Result 266 states and 333 transitions. [2020-08-27 21:37:02,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-27 21:37:02,868 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-27 21:37:02,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:37:02,873 INFO L225 Difference]: With dead ends: 266 [2020-08-27 21:37:02,874 INFO L226 Difference]: Without dead ends: 164 [2020-08-27 21:37:02,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-27 21:37:02,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-08-27 21:37:02,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 130. [2020-08-27 21:37:02,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-27 21:37:02,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2020-08-27 21:37:02,915 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 57 [2020-08-27 21:37:02,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:37:02,916 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2020-08-27 21:37:02,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-27 21:37:02,916 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2020-08-27 21:37:02,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-27 21:37:02,919 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:37:02,919 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:37:02,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-27 21:37:02,920 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:37:02,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:37:02,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1442711131, now seen corresponding path program 1 times [2020-08-27 21:37:02,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:37:02,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819891245] [2020-08-27 21:37:02,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:37:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:03,278 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:37:03,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:37:03,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:03,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:37:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:03,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:37:03,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:03,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:37:03,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:03,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:37:03,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:03,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:37:03,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:03,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-27 21:37:03,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:03,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:03,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:03,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:03,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:03,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-27 21:37:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:03,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-27 21:37:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:03,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:37:03,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819891245] [2020-08-27 21:37:03,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:37:03,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-27 21:37:03,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420045395] [2020-08-27 21:37:03,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-27 21:37:03,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:37:03,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-27 21:37:03,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-27 21:37:03,406 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand 7 states. [2020-08-27 21:37:03,806 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:37:05,178 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:37:05,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:37:05,932 INFO L93 Difference]: Finished difference Result 370 states and 466 transitions. [2020-08-27 21:37:05,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-27 21:37:05,933 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-08-27 21:37:05,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:37:05,936 INFO L225 Difference]: With dead ends: 370 [2020-08-27 21:37:05,936 INFO L226 Difference]: Without dead ends: 268 [2020-08-27 21:37:05,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-27 21:37:05,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-08-27 21:37:05,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 219. [2020-08-27 21:37:05,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-08-27 21:37:05,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 251 transitions. [2020-08-27 21:37:05,993 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 251 transitions. Word has length 70 [2020-08-27 21:37:05,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:37:05,994 INFO L479 AbstractCegarLoop]: Abstraction has 219 states and 251 transitions. [2020-08-27 21:37:05,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-27 21:37:05,994 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 251 transitions. [2020-08-27 21:37:05,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-27 21:37:05,997 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:37:05,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:37:05,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-27 21:37:05,997 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:37:05,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:37:05,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1583652076, now seen corresponding path program 1 times [2020-08-27 21:37:05,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:37:05,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115067510] [2020-08-27 21:37:05,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:37:06,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:06,331 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:37:06,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:37:06,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:06,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:37:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:06,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:37:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:06,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:37:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:06,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:37:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:06,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:37:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:06,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-27 21:37:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:06,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:06,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:06,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:06,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:37:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:06,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:37:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:06,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-27 21:37:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:06,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-27 21:37:06,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:06,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:37:06,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115067510] [2020-08-27 21:37:06,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:37:06,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-27 21:37:06,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476002872] [2020-08-27 21:37:06,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-27 21:37:06,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:37:06,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-27 21:37:06,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-27 21:37:06,502 INFO L87 Difference]: Start difference. First operand 219 states and 251 transitions. Second operand 9 states. [2020-08-27 21:37:07,024 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:37:08,286 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:37:08,699 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:37:09,401 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:37:09,707 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:37:11,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:37:11,064 INFO L93 Difference]: Finished difference Result 653 states and 819 transitions. [2020-08-27 21:37:11,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-27 21:37:11,064 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-27 21:37:11,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:37:11,069 INFO L225 Difference]: With dead ends: 653 [2020-08-27 21:37:11,069 INFO L226 Difference]: Without dead ends: 462 [2020-08-27 21:37:11,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-27 21:37:11,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-08-27 21:37:11,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 386. [2020-08-27 21:37:11,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-08-27 21:37:11,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 442 transitions. [2020-08-27 21:37:11,212 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 442 transitions. Word has length 84 [2020-08-27 21:37:11,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:37:11,215 INFO L479 AbstractCegarLoop]: Abstraction has 386 states and 442 transitions. [2020-08-27 21:37:11,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-27 21:37:11,215 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 442 transitions. [2020-08-27 21:37:11,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-27 21:37:11,218 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:37:11,218 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:37:11,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-27 21:37:11,219 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:37:11,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:37:11,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1422526648, now seen corresponding path program 1 times [2020-08-27 21:37:11,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:37:11,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596228913] [2020-08-27 21:37:11,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:37:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:11,666 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:37:11,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:37:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:11,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:37:11,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:11,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:37:11,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:11,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:37:11,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:11,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:37:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:11,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:37:11,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:11,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-27 21:37:11,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:11,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-27 21:37:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:11,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:11,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:11,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:11,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:37:11,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:11,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:37:11,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:11,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-27 21:37:11,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:11,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-27 21:37:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:11,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:37:11,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596228913] [2020-08-27 21:37:11,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:37:11,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-27 21:37:11,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973827209] [2020-08-27 21:37:11,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-27 21:37:11,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:37:11,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-27 21:37:11,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-27 21:37:11,843 INFO L87 Difference]: Start difference. First operand 386 states and 442 transitions. Second operand 10 states. [2020-08-27 21:37:12,396 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:37:13,837 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:37:15,096 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:37:15,406 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:37:15,748 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:37:16,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:37:16,353 INFO L93 Difference]: Finished difference Result 858 states and 1059 transitions. [2020-08-27 21:37:16,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-27 21:37:16,355 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-27 21:37:16,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:37:16,359 INFO L225 Difference]: With dead ends: 858 [2020-08-27 21:37:16,359 INFO L226 Difference]: Without dead ends: 500 [2020-08-27 21:37:16,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-27 21:37:16,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-08-27 21:37:16,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 385. [2020-08-27 21:37:16,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-08-27 21:37:16,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 439 transitions. [2020-08-27 21:37:16,440 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 439 transitions. Word has length 88 [2020-08-27 21:37:16,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:37:16,440 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 439 transitions. [2020-08-27 21:37:16,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-27 21:37:16,441 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 439 transitions. [2020-08-27 21:37:16,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-27 21:37:16,442 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:37:16,443 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] [2020-08-27 21:37:16,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-27 21:37:16,443 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:37:16,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:37:16,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1956386739, now seen corresponding path program 1 times [2020-08-27 21:37:16,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:37:16,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103626054] [2020-08-27 21:37:16,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:37:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:16,736 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:37:16,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:37:16,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:16,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:37:16,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:16,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:37:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:16,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:37:16,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:16,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:37:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:16,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:37:16,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:16,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-27 21:37:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:16,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-27 21:37:16,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:16,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:16,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:16,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:16,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:37:16,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:16,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:37:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:16,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:37:16,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:16,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:37:16,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:16,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:37:16,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:16,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-27 21:37:16,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:16,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-27 21:37:16,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:16,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:37:16,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103626054] [2020-08-27 21:37:16,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:37:16,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-27 21:37:16,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403495099] [2020-08-27 21:37:16,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-27 21:37:16,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:37:16,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-27 21:37:16,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-27 21:37:16,913 INFO L87 Difference]: Start difference. First operand 385 states and 439 transitions. Second operand 10 states. [2020-08-27 21:37:18,101 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:37:18,441 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-27 21:37:18,747 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:37:19,046 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:37:20,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:37:20,483 INFO L93 Difference]: Finished difference Result 865 states and 1088 transitions. [2020-08-27 21:37:20,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-27 21:37:20,485 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 104 [2020-08-27 21:37:20,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:37:20,490 INFO L225 Difference]: With dead ends: 865 [2020-08-27 21:37:20,490 INFO L226 Difference]: Without dead ends: 508 [2020-08-27 21:37:20,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-27 21:37:20,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-08-27 21:37:20,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 395. [2020-08-27 21:37:20,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-08-27 21:37:20,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 449 transitions. [2020-08-27 21:37:20,589 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 449 transitions. Word has length 104 [2020-08-27 21:37:20,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:37:20,589 INFO L479 AbstractCegarLoop]: Abstraction has 395 states and 449 transitions. [2020-08-27 21:37:20,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-27 21:37:20,590 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 449 transitions. [2020-08-27 21:37:20,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-27 21:37:20,591 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:37:20,592 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] [2020-08-27 21:37:20,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-27 21:37:20,592 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:37:20,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:37:20,592 INFO L82 PathProgramCache]: Analyzing trace with hash -28114037, now seen corresponding path program 1 times [2020-08-27 21:37:20,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:37:20,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309159812] [2020-08-27 21:37:20,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:37:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:20,908 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:37:20,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:37:20,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:20,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:37:20,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:20,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:37:20,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:20,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:37:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:20,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:37:20,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:20,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:37:20,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:20,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-27 21:37:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:20,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-27 21:37:20,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:21,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:21,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:21,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:37:21,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:21,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:37:21,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:21,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:37:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:21,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:37:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:21,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:37:21,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:21,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-27 21:37:21,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:21,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-27 21:37:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:21,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:37:21,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309159812] [2020-08-27 21:37:21,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:37:21,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-27 21:37:21,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584548772] [2020-08-27 21:37:21,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-27 21:37:21,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:37:21,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-27 21:37:21,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:37:21,088 INFO L87 Difference]: Start difference. First operand 395 states and 449 transitions. Second operand 12 states. [2020-08-27 21:37:21,622 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:37:21,923 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:37:22,217 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:37:22,993 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:37:23,304 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:37:23,604 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-27 21:37:25,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:37:25,136 INFO L93 Difference]: Finished difference Result 885 states and 1110 transitions. [2020-08-27 21:37:25,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-27 21:37:25,137 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 104 [2020-08-27 21:37:25,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:37:25,141 INFO L225 Difference]: With dead ends: 885 [2020-08-27 21:37:25,141 INFO L226 Difference]: Without dead ends: 518 [2020-08-27 21:37:25,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-27 21:37:25,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2020-08-27 21:37:25,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 403. [2020-08-27 21:37:25,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-08-27 21:37:25,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 457 transitions. [2020-08-27 21:37:25,224 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 457 transitions. Word has length 104 [2020-08-27 21:37:25,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:37:25,225 INFO L479 AbstractCegarLoop]: Abstraction has 403 states and 457 transitions. [2020-08-27 21:37:25,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-27 21:37:25,225 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 457 transitions. [2020-08-27 21:37:25,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-27 21:37:25,227 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:37:25,227 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] [2020-08-27 21:37:25,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-27 21:37:25,227 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:37:25,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:37:25,228 INFO L82 PathProgramCache]: Analyzing trace with hash -268654166, now seen corresponding path program 1 times [2020-08-27 21:37:25,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:37:25,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446036671] [2020-08-27 21:37:25,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:37:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:25,555 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:37:25,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:37:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:25,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:37:25,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:25,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:37:25,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:25,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:37:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:25,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:37:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:25,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:37:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:25,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-27 21:37:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:25,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-27 21:37:25,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:25,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:25,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:25,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:25,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:37:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:25,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:37:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:25,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:37:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:25,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:37:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:25,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:37:25,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:25,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-27 21:37:25,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:25,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-27 21:37:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:25,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-27 21:37:25,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446036671] [2020-08-27 21:37:25,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:37:25,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-27 21:37:25,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595488507] [2020-08-27 21:37:25,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-27 21:37:25,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:37:25,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-27 21:37:25,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-27 21:37:25,902 INFO L87 Difference]: Start difference. First operand 403 states and 457 transitions. Second operand 8 states. [2020-08-27 21:37:26,412 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:37:26,989 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:37:29,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:37:29,940 INFO L93 Difference]: Finished difference Result 1233 states and 1597 transitions. [2020-08-27 21:37:29,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-27 21:37:29,941 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 104 [2020-08-27 21:37:29,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:37:29,946 INFO L225 Difference]: With dead ends: 1233 [2020-08-27 21:37:29,947 INFO L226 Difference]: Without dead ends: 858 [2020-08-27 21:37:29,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-27 21:37:29,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2020-08-27 21:37:30,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 713. [2020-08-27 21:37:30,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-08-27 21:37:30,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 835 transitions. [2020-08-27 21:37:30,109 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 835 transitions. Word has length 104 [2020-08-27 21:37:30,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:37:30,111 INFO L479 AbstractCegarLoop]: Abstraction has 713 states and 835 transitions. [2020-08-27 21:37:30,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-27 21:37:30,111 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 835 transitions. [2020-08-27 21:37:30,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-27 21:37:30,115 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:37:30,115 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] [2020-08-27 21:37:30,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-27 21:37:30,116 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:37:30,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:37:30,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1852641244, now seen corresponding path program 1 times [2020-08-27 21:37:30,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:37:30,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579507067] [2020-08-27 21:37:30,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:37:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:30,459 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:37:30,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:37:30,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:30,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:37:30,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:30,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:37:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:30,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:37:30,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:30,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:37:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:30,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:37:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:30,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:37:30,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:30,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 21:37:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:30,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-27 21:37:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:30,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:30,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:30,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:37:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:30,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:37:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:30,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:37:30,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:30,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:37:30,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:30,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:37:30,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:30,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-27 21:37:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:30,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-27 21:37:30,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:30,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-27 21:37:30,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579507067] [2020-08-27 21:37:30,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:37:30,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-27 21:37:30,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819679665] [2020-08-27 21:37:30,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-27 21:37:30,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:37:30,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-27 21:37:30,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-27 21:37:30,973 INFO L87 Difference]: Start difference. First operand 713 states and 835 transitions. Second operand 18 states. [2020-08-27 21:37:31,597 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:37:32,001 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-27 21:37:32,310 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:37:32,592 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:37:33,456 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:37:34,813 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:37:35,239 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:37:35,612 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:37:35,984 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:37:36,388 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:37:36,754 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:37:37,478 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2020-08-27 21:37:38,222 WARN L193 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2020-08-27 21:37:41,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:37:41,027 INFO L93 Difference]: Finished difference Result 1515 states and 1873 transitions. [2020-08-27 21:37:41,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-08-27 21:37:41,028 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 108 [2020-08-27 21:37:41,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:37:41,033 INFO L225 Difference]: With dead ends: 1515 [2020-08-27 21:37:41,034 INFO L226 Difference]: Without dead ends: 830 [2020-08-27 21:37:41,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=554, Invalid=2308, Unknown=0, NotChecked=0, Total=2862 [2020-08-27 21:37:41,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2020-08-27 21:37:41,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 694. [2020-08-27 21:37:41,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2020-08-27 21:37:41,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 803 transitions. [2020-08-27 21:37:41,176 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 803 transitions. Word has length 108 [2020-08-27 21:37:41,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:37:41,177 INFO L479 AbstractCegarLoop]: Abstraction has 694 states and 803 transitions. [2020-08-27 21:37:41,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-27 21:37:41,177 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 803 transitions. [2020-08-27 21:37:41,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-08-27 21:37:41,180 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:37:41,180 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 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] [2020-08-27 21:37:41,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-27 21:37:41,181 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:37:41,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:37:41,181 INFO L82 PathProgramCache]: Analyzing trace with hash 760447467, now seen corresponding path program 1 times [2020-08-27 21:37:41,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:37:41,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783650456] [2020-08-27 21:37:41,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:37:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:41,574 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:37:41,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:37:41,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:41,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:37:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:41,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:37:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:41,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:37:41,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:41,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:37:41,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:41,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-27 21:37:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:41,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:37:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:41,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-27 21:37:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:41,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:41,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:41,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:41,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:41,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:41,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:37:41,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:41,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:37:41,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:41,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:37:41,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:41,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:37:41,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:41,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:37:41,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:41,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-27 21:37:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:41,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:37:41,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:41,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-27 21:37:41,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:41,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-27 21:37:41,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:41,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-27 21:37:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:41,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:41,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:37:41,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:41,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-27 21:37:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:41,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:37:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:41,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-27 21:37:41,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:41,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-27 21:37:41,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:37:41,960 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-08-27 21:37:41,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783650456] [2020-08-27 21:37:41,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:37:41,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-27 21:37:41,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580220996] [2020-08-27 21:37:41,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-27 21:37:41,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:37:41,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-27 21:37:41,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-27 21:37:41,962 INFO L87 Difference]: Start difference. First operand 694 states and 803 transitions. Second operand 19 states. [2020-08-27 21:37:42,802 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:37:43,242 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-27 21:37:43,572 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:37:43,877 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-27 21:37:44,808 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:37:46,153 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:37:46,570 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:37:46,899 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:37:47,238 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:37:47,633 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-27 21:37:47,964 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 191