/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 --rcfgbuilder.size.of.a.code.block SingleStatement --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_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 14:42:06,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 14:42:06,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 14:42:06,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 14:42:06,509 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 14:42:06,521 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 14:42:06,523 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 14:42:06,528 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 14:42:06,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 14:42:06,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 14:42:06,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 14:42:06,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 14:42:06,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 14:42:06,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 14:42:06,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 14:42:06,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 14:42:06,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 14:42:06,548 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 14:42:06,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 14:42:06,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 14:42:06,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 14:42:06,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 14:42:06,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 14:42:06,566 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 14:42:06,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 14:42:06,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 14:42:06,570 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 14:42:06,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 14:42:06,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 14:42:06,575 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 14:42:06,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 14:42:06,576 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 14:42:06,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 14:42:06,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 14:42:06,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 14:42:06,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 14:42:06,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 14:42:06,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 14:42:06,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 14:42:06,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 14:42:06,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 14:42:06,585 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 [2020-09-24 14:42:06,635 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 14:42:06,635 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 14:42:06,637 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 14:42:06,638 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 14:42:06,638 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 14:42:06,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 14:42:06,638 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 14:42:06,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 14:42:06,639 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 14:42:06,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 14:42:06,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 14:42:06,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 14:42:06,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 14:42:06,641 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 14:42:06,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 14:42:06,642 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 14:42:06,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 14:42:06,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 14:42:06,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 14:42:06,642 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 14:42:06,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 14:42:06,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:42:06,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 14:42:06,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 14:42:06,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 14:42:06,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 14:42:06,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 14:42:06,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 14:42:06,644 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 14:42:06,645 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.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 14:42:07,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 14:42:07,150 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 14:42:07,156 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 14:42:07,158 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 14:42:07,159 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 14:42:07,160 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product43.cil.c [2020-09-24 14:42:07,246 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45c8d7b11/77a54bb9bd604d178c96774bcccaa6af/FLAG88cc8c620 [2020-09-24 14:42:07,888 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 14:42:07,889 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product43.cil.c [2020-09-24 14:42:07,907 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45c8d7b11/77a54bb9bd604d178c96774bcccaa6af/FLAG88cc8c620 [2020-09-24 14:42:08,145 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/45c8d7b11/77a54bb9bd604d178c96774bcccaa6af [2020-09-24 14:42:08,157 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 14:42:08,162 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 14:42:08,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 14:42:08,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 14:42:08,170 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 14:42:08,171 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:42:08" (1/1) ... [2020-09-24 14:42:08,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@556c1ebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:42:08, skipping insertion in model container [2020-09-24 14:42:08,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:42:08" (1/1) ... [2020-09-24 14:42:08,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 14:42:08,235 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 14:42:08,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:42:08,617 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 14:42:08,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:42:08,856 INFO L208 MainTranslator]: Completed translation [2020-09-24 14:42:08,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:42:08 WrapperNode [2020-09-24 14:42:08,857 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 14:42:08,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 14:42:08,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 14:42:08,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 14:42:08,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:42:08" (1/1) ... [2020-09-24 14:42:08,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:42:08" (1/1) ... [2020-09-24 14:42:08,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:42:08" (1/1) ... [2020-09-24 14:42:08,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:42:08" (1/1) ... [2020-09-24 14:42:08,932 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:42:08" (1/1) ... [2020-09-24 14:42:08,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:42:08" (1/1) ... [2020-09-24 14:42:08,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:42:08" (1/1) ... [2020-09-24 14:42:08,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 14:42:08,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 14:42:08,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 14:42:08,974 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 14:42:08,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:42:08" (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 [2020-09-24 14:42:09,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 14:42:09,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 14:42:09,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 14:42:09,068 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 14:42:09,068 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 14:42:09,068 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 14:42:09,068 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 14:42:09,069 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 14:42:09,069 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 14:42:09,069 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 14:42:09,069 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 14:42:09,069 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 14:42:09,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 14:42:09,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 14:42:09,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 14:42:09,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 14:42:09,070 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 14:42:09,071 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 14:42:09,071 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 14:42:09,071 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 14:42:09,071 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 14:42:09,071 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 14:42:09,072 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 14:42:09,072 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 14:42:09,072 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 14:42:09,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-09-24 14:42:09,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-09-24 14:42:09,072 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 14:42:09,073 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 14:42:09,073 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 14:42:09,073 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 14:42:09,073 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-24 14:42:09,073 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 14:42:09,074 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 14:42:09,074 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 14:42:09,074 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 14:42:09,074 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 14:42:09,074 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 14:42:09,074 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-24 14:42:09,074 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 14:42:09,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 14:42:09,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 14:42:09,075 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 14:42:09,075 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 14:42:09,075 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 14:42:09,075 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 14:42:09,076 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 14:42:09,076 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 14:42:09,076 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 14:42:09,076 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 14:42:09,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 14:42:09,076 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 14:42:09,077 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 14:42:09,077 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 14:42:09,077 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 14:42:09,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 14:42:09,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 14:42:09,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 14:42:09,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 14:42:09,078 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 14:42:09,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 14:42:09,078 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 14:42:09,078 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 14:42:09,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 14:42:09,079 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 14:42:09,079 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 14:42:09,079 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 14:42:09,079 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 14:42:09,079 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 14:42:09,079 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 14:42:09,080 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 14:42:09,080 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 14:42:09,080 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-09-24 14:42:09,080 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 14:42:09,080 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 14:42:09,080 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 14:42:09,081 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 14:42:09,081 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 14:42:09,081 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 14:42:09,081 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 14:42:09,081 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 14:42:09,081 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 14:42:09,082 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-09-24 14:42:09,082 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-24 14:42:09,082 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 14:42:09,082 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 14:42:09,082 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 14:42:09,082 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 14:42:09,083 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 14:42:09,083 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-24 14:42:09,083 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 14:42:09,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 14:42:09,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 14:42:09,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 14:42:10,295 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 14:42:10,295 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 14:42:10,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:42:10 BoogieIcfgContainer [2020-09-24 14:42:10,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 14:42:10,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 14:42:10,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 14:42:10,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 14:42:10,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:42:08" (1/3) ... [2020-09-24 14:42:10,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3cfadc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:42:10, skipping insertion in model container [2020-09-24 14:42:10,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:42:08" (2/3) ... [2020-09-24 14:42:10,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3cfadc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:42:10, skipping insertion in model container [2020-09-24 14:42:10,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:42:10" (3/3) ... [2020-09-24 14:42:10,324 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product43.cil.c [2020-09-24 14:42:10,336 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 14:42:10,350 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 14:42:10,372 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 14:42:10,410 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 14:42:10,410 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 14:42:10,410 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 14:42:10,410 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 14:42:10,411 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 14:42:10,411 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 14:42:10,411 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 14:42:10,411 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 14:42:10,437 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states. [2020-09-24 14:42:10,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-24 14:42:10,455 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:42:10,456 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:42:10,457 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:42:10,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:42:10,463 INFO L82 PathProgramCache]: Analyzing trace with hash 712153127, now seen corresponding path program 1 times [2020-09-24 14:42:10,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:42:10,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699544966] [2020-09-24 14:42:10,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:42:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:11,307 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:42:11,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:42:11,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:11,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:42:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:11,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:42:11,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:11,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:42:11,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:11,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:42:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:11,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:42:11,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:11,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-24 14:42:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:11,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-24 14:42:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:11,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:42:11,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699544966] [2020-09-24 14:42:11,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:42:11,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 14:42:11,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467915050] [2020-09-24 14:42:11,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 14:42:11,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:42:11,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 14:42:11,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-24 14:42:11,557 INFO L87 Difference]: Start difference. First operand 313 states. Second operand 4 states. [2020-09-24 14:42:12,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:42:12,923 INFO L93 Difference]: Finished difference Result 489 states and 577 transitions. [2020-09-24 14:42:12,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 14:42:12,925 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-09-24 14:42:12,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:42:12,947 INFO L225 Difference]: With dead ends: 489 [2020-09-24 14:42:12,947 INFO L226 Difference]: Without dead ends: 312 [2020-09-24 14:42:12,953 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 [2020-09-24 14:42:12,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-09-24 14:42:13,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 262. [2020-09-24 14:42:13,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-09-24 14:42:13,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 284 transitions. [2020-09-24 14:42:13,103 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 284 transitions. Word has length 148 [2020-09-24 14:42:13,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:42:13,106 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 284 transitions. [2020-09-24 14:42:13,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 14:42:13,106 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 284 transitions. [2020-09-24 14:42:13,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-24 14:42:13,121 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:42:13,122 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:42:13,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 14:42:13,123 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:42:13,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:42:13,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1114292978, now seen corresponding path program 1 times [2020-09-24 14:42:13,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:42:13,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713650125] [2020-09-24 14:42:13,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:42:13,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:13,617 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:42:13,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:42:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:13,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:42:13,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:13,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:42:13,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:13,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:42:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:13,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:42:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:13,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:42:13,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:13,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-24 14:42:13,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:13,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-24 14:42:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:13,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:42:13,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713650125] [2020-09-24 14:42:13,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:42:13,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 14:42:13,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113522473] [2020-09-24 14:42:13,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 14:42:13,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:42:13,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 14:42:13,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 14:42:13,719 INFO L87 Difference]: Start difference. First operand 262 states and 284 transitions. Second operand 5 states. [2020-09-24 14:42:14,436 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:42:15,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:42:15,464 INFO L93 Difference]: Finished difference Result 409 states and 462 transitions. [2020-09-24 14:42:15,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 14:42:15,465 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-09-24 14:42:15,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:42:15,469 INFO L225 Difference]: With dead ends: 409 [2020-09-24 14:42:15,470 INFO L226 Difference]: Without dead ends: 301 [2020-09-24 14:42:15,472 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 [2020-09-24 14:42:15,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-09-24 14:42:15,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 252. [2020-09-24 14:42:15,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-09-24 14:42:15,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 271 transitions. [2020-09-24 14:42:15,516 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 271 transitions. Word has length 149 [2020-09-24 14:42:15,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:42:15,517 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 271 transitions. [2020-09-24 14:42:15,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 14:42:15,517 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 271 transitions. [2020-09-24 14:42:15,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-24 14:42:15,520 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:42:15,520 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:42:15,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 14:42:15,521 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:42:15,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:42:15,521 INFO L82 PathProgramCache]: Analyzing trace with hash 185312608, now seen corresponding path program 1 times [2020-09-24 14:42:15,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:42:15,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106596245] [2020-09-24 14:42:15,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:42:15,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:16,012 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:42:16,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:42:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:16,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:42:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:16,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:42:16,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:16,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:42:16,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:16,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:42:16,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:16,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:42:16,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:16,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-24 14:42:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:16,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-24 14:42:16,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:16,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:42:16,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106596245] [2020-09-24 14:42:16,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:42:16,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 14:42:16,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772877315] [2020-09-24 14:42:16,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 14:42:16,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:42:16,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 14:42:16,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-24 14:42:16,452 INFO L87 Difference]: Start difference. First operand 252 states and 271 transitions. Second operand 10 states. [2020-09-24 14:42:17,035 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:42:17,435 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:42:17,746 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-24 14:42:18,039 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:42:18,350 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 14:42:18,639 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:42:19,650 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:42:21,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:42:21,701 INFO L93 Difference]: Finished difference Result 671 states and 774 transitions. [2020-09-24 14:42:21,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 14:42:21,701 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 158 [2020-09-24 14:42:21,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:42:21,707 INFO L225 Difference]: With dead ends: 671 [2020-09-24 14:42:21,707 INFO L226 Difference]: Without dead ends: 534 [2020-09-24 14:42:21,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-09-24 14:42:21,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2020-09-24 14:42:21,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 445. [2020-09-24 14:42:21,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-09-24 14:42:21,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 494 transitions. [2020-09-24 14:42:21,781 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 494 transitions. Word has length 158 [2020-09-24 14:42:21,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:42:21,782 INFO L479 AbstractCegarLoop]: Abstraction has 445 states and 494 transitions. [2020-09-24 14:42:21,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 14:42:21,782 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 494 transitions. [2020-09-24 14:42:21,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-24 14:42:21,785 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:42:21,785 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:42:21,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 14:42:21,786 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:42:21,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:42:21,786 INFO L82 PathProgramCache]: Analyzing trace with hash 226204253, now seen corresponding path program 1 times [2020-09-24 14:42:21,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:42:21,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123840235] [2020-09-24 14:42:21,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:42:21,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:22,210 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:42:22,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:42:22,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:22,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:42:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:22,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:42:22,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:22,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:42:22,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:22,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:42:22,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:22,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:42:22,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:22,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-24 14:42:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:22,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:42:22,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:22,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-09-24 14:42:22,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:22,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-09-24 14:42:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:22,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:42:22,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123840235] [2020-09-24 14:42:22,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:42:22,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 14:42:22,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34306846] [2020-09-24 14:42:22,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 14:42:22,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:42:22,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 14:42:22,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 14:42:22,463 INFO L87 Difference]: Start difference. First operand 445 states and 494 transitions. Second operand 7 states. [2020-09-24 14:42:23,162 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:42:24,930 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:42:25,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:42:25,559 INFO L93 Difference]: Finished difference Result 1113 states and 1318 transitions. [2020-09-24 14:42:25,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 14:42:25,561 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 166 [2020-09-24 14:42:25,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:42:25,574 INFO L225 Difference]: With dead ends: 1113 [2020-09-24 14:42:25,574 INFO L226 Difference]: Without dead ends: 783 [2020-09-24 14:42:25,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-09-24 14:42:25,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2020-09-24 14:42:25,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 655. [2020-09-24 14:42:25,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2020-09-24 14:42:25,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 728 transitions. [2020-09-24 14:42:25,749 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 728 transitions. Word has length 166 [2020-09-24 14:42:25,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:42:25,750 INFO L479 AbstractCegarLoop]: Abstraction has 655 states and 728 transitions. [2020-09-24 14:42:25,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 14:42:25,751 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 728 transitions. [2020-09-24 14:42:25,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-24 14:42:25,754 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:42:25,754 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:42:25,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 14:42:25,755 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:42:25,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:42:25,755 INFO L82 PathProgramCache]: Analyzing trace with hash 216605652, now seen corresponding path program 1 times [2020-09-24 14:42:25,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:42:25,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700603293] [2020-09-24 14:42:25,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:42:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:26,189 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:42:26,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:42:26,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:26,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:42:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:26,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:42:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:26,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:42:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:26,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:42:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:26,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:42:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:26,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-24 14:42:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:26,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-24 14:42:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:26,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-24 14:42:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:26,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:42:26,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700603293] [2020-09-24 14:42:26,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:42:26,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 14:42:26,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472993674] [2020-09-24 14:42:26,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 14:42:26,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:42:26,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 14:42:26,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-24 14:42:26,415 INFO L87 Difference]: Start difference. First operand 655 states and 728 transitions. Second operand 10 states. [2020-09-24 14:42:27,009 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:42:28,131 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:42:28,448 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 14:42:28,811 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:42:29,153 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:42:29,466 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 14:42:29,773 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:42:30,069 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:42:30,488 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:42:31,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:42:31,956 INFO L93 Difference]: Finished difference Result 1778 states and 2087 transitions. [2020-09-24 14:42:31,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 14:42:31,957 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 167 [2020-09-24 14:42:31,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:42:31,968 INFO L225 Difference]: With dead ends: 1778 [2020-09-24 14:42:31,968 INFO L226 Difference]: Without dead ends: 1238 [2020-09-24 14:42:31,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-09-24 14:42:31,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2020-09-24 14:42:32,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1091. [2020-09-24 14:42:32,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2020-09-24 14:42:32,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1217 transitions. [2020-09-24 14:42:32,187 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1217 transitions. Word has length 167 [2020-09-24 14:42:32,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:42:32,187 INFO L479 AbstractCegarLoop]: Abstraction has 1091 states and 1217 transitions. [2020-09-24 14:42:32,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 14:42:32,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1217 transitions. [2020-09-24 14:42:32,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-24 14:42:32,193 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:42:32,193 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:42:32,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 14:42:32,194 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:42:32,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:42:32,195 INFO L82 PathProgramCache]: Analyzing trace with hash 611019346, now seen corresponding path program 1 times [2020-09-24 14:42:32,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:42:32,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928943463] [2020-09-24 14:42:32,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:42:32,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:32,656 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:42:32,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:42:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:32,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:42:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:32,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:42:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:32,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:42:32,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:32,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:42:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:32,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:42:32,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:32,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-24 14:42:32,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:32,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-24 14:42:32,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:32,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-24 14:42:32,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:32,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-24 14:42:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:32,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:42:32,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928943463] [2020-09-24 14:42:32,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:42:32,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 14:42:32,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487461229] [2020-09-24 14:42:32,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 14:42:32,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:42:32,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 14:42:32,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 14:42:32,849 INFO L87 Difference]: Start difference. First operand 1091 states and 1217 transitions. Second operand 11 states. [2020-09-24 14:42:33,399 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:42:34,825 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:42:35,165 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 14:42:35,545 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:42:35,886 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 14:42:36,209 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:42:37,020 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:42:37,305 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:42:37,662 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:42:38,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:42:38,700 INFO L93 Difference]: Finished difference Result 2337 states and 2719 transitions. [2020-09-24 14:42:38,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-24 14:42:38,701 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 172 [2020-09-24 14:42:38,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:42:38,713 INFO L225 Difference]: With dead ends: 2337 [2020-09-24 14:42:38,713 INFO L226 Difference]: Without dead ends: 1361 [2020-09-24 14:42:38,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=283, Invalid=773, Unknown=0, NotChecked=0, Total=1056 [2020-09-24 14:42:38,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2020-09-24 14:42:38,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1085. [2020-09-24 14:42:38,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1085 states. [2020-09-24 14:42:38,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1205 transitions. [2020-09-24 14:42:38,866 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1205 transitions. Word has length 172 [2020-09-24 14:42:38,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:42:38,867 INFO L479 AbstractCegarLoop]: Abstraction has 1085 states and 1205 transitions. [2020-09-24 14:42:38,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 14:42:38,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1205 transitions. [2020-09-24 14:42:38,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-24 14:42:38,873 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:42:38,873 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:42:38,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 14:42:38,874 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:42:38,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:42:38,875 INFO L82 PathProgramCache]: Analyzing trace with hash -472762249, now seen corresponding path program 1 times [2020-09-24 14:42:38,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:42:38,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288980230] [2020-09-24 14:42:38,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:42:38,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:39,205 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:42:39,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:42:39,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:39,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:42:39,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:39,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:42:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:39,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:42:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:39,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:42:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:39,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:42:39,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:39,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-24 14:42:39,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:39,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-24 14:42:39,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:39,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:42:39,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:39,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 14:42:39,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:39,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 14:42:39,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:39,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:42:39,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:39,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:42:39,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:39,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 14:42:39,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:39,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-09-24 14:42:39,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:39,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-24 14:42:39,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:39,467 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 14:42:39,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288980230] [2020-09-24 14:42:39,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:42:39,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 14:42:39,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286837978] [2020-09-24 14:42:39,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 14:42:39,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:42:39,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 14:42:39,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 14:42:39,472 INFO L87 Difference]: Start difference. First operand 1085 states and 1205 transitions. Second operand 11 states. [2020-09-24 14:42:40,915 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:42:41,193 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-24 14:42:41,509 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-09-24 14:42:41,859 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:42:42,220 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:42:42,528 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:42:43,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:42:43,879 INFO L93 Difference]: Finished difference Result 2483 states and 2970 transitions. [2020-09-24 14:42:43,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 14:42:43,881 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 218 [2020-09-24 14:42:43,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:42:43,890 INFO L225 Difference]: With dead ends: 2483 [2020-09-24 14:42:43,890 INFO L226 Difference]: Without dead ends: 1513 [2020-09-24 14:42:43,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-09-24 14:42:43,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2020-09-24 14:42:44,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 1117. [2020-09-24 14:42:44,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1117 states. [2020-09-24 14:42:44,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1237 transitions. [2020-09-24 14:42:44,043 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1237 transitions. Word has length 218 [2020-09-24 14:42:44,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:42:44,044 INFO L479 AbstractCegarLoop]: Abstraction has 1117 states and 1237 transitions. [2020-09-24 14:42:44,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 14:42:44,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1237 transitions. [2020-09-24 14:42:44,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-24 14:42:44,052 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:42:44,052 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:42:44,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 14:42:44,053 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:42:44,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:42:44,053 INFO L82 PathProgramCache]: Analyzing trace with hash 967037143, now seen corresponding path program 1 times [2020-09-24 14:42:44,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:42:44,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251187804] [2020-09-24 14:42:44,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:42:44,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:44,427 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:42:44,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:42:44,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:44,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:42:44,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:44,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:42:44,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:44,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:42:44,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:44,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:42:44,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:44,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:42:44,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:44,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-24 14:42:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:44,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-24 14:42:44,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:44,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:42:44,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:44,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 14:42:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:44,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 14:42:44,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:44,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:42:44,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:44,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:42:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:44,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 14:42:44,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:44,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-09-24 14:42:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:44,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-24 14:42:44,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:44,680 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 14:42:44,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251187804] [2020-09-24 14:42:44,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:42:44,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-24 14:42:44,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659095032] [2020-09-24 14:42:44,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 14:42:44,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:42:44,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 14:42:44,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-24 14:42:44,682 INFO L87 Difference]: Start difference. First operand 1117 states and 1237 transitions. Second operand 14 states. [2020-09-24 14:42:45,376 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:42:45,697 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-24 14:42:46,021 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:42:46,357 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:42:46,678 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:42:47,752 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:42:48,081 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:42:48,430 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:42:48,790 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:42:49,109 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:42:50,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:42:50,788 INFO L93 Difference]: Finished difference Result 2551 states and 3042 transitions. [2020-09-24 14:42:50,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 14:42:50,791 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 218 [2020-09-24 14:42:50,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:42:50,799 INFO L225 Difference]: With dead ends: 2551 [2020-09-24 14:42:50,800 INFO L226 Difference]: Without dead ends: 1549 [2020-09-24 14:42:50,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-09-24 14:42:50,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1549 states. [2020-09-24 14:42:50,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1549 to 1141. [2020-09-24 14:42:50,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1141 states. [2020-09-24 14:42:50,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1261 transitions. [2020-09-24 14:42:50,950 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1261 transitions. Word has length 218 [2020-09-24 14:42:50,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:42:50,951 INFO L479 AbstractCegarLoop]: Abstraction has 1141 states and 1261 transitions. [2020-09-24 14:42:50,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 14:42:50,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1261 transitions. [2020-09-24 14:42:50,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-24 14:42:50,958 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:42:50,958 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:42:50,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 14:42:50,959 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:42:50,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:42:50,959 INFO L82 PathProgramCache]: Analyzing trace with hash 346565396, now seen corresponding path program 1 times [2020-09-24 14:42:50,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:42:50,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693179526] [2020-09-24 14:42:50,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:42:51,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:51,342 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:42:51,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:42:51,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:51,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:42:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:51,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:42:51,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:51,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:42:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:51,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:42:51,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:51,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:42:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:51,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-24 14:42:51,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:51,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-24 14:42:51,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:51,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:42:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:51,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 14:42:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:51,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 14:42:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:51,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:42:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:51,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:42:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:51,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 14:42:51,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:51,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-09-24 14:42:51,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:51,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-24 14:42:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:51,552 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 14:42:51,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693179526] [2020-09-24 14:42:51,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:42:51,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 14:42:51,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217131698] [2020-09-24 14:42:51,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 14:42:51,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:42:51,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 14:42:51,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-24 14:42:51,554 INFO L87 Difference]: Start difference. First operand 1141 states and 1261 transitions. Second operand 8 states. [2020-09-24 14:42:52,128 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:42:52,823 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:42:55,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:42:55,741 INFO L93 Difference]: Finished difference Result 3759 states and 4568 transitions. [2020-09-24 14:42:55,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 14:42:55,742 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 218 [2020-09-24 14:42:55,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:42:55,757 INFO L225 Difference]: With dead ends: 3759 [2020-09-24 14:42:55,758 INFO L226 Difference]: Without dead ends: 2733 [2020-09-24 14:42:55,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-09-24 14:42:55,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2733 states. [2020-09-24 14:42:56,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2733 to 2183. [2020-09-24 14:42:56,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2183 states. [2020-09-24 14:42:56,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2183 states to 2183 states and 2467 transitions. [2020-09-24 14:42:56,108 INFO L78 Accepts]: Start accepts. Automaton has 2183 states and 2467 transitions. Word has length 218 [2020-09-24 14:42:56,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:42:56,109 INFO L479 AbstractCegarLoop]: Abstraction has 2183 states and 2467 transitions. [2020-09-24 14:42:56,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 14:42:56,110 INFO L276 IsEmpty]: Start isEmpty. Operand 2183 states and 2467 transitions. [2020-09-24 14:42:56,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-09-24 14:42:56,116 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:42:56,116 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:42:56,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 14:42:56,117 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:42:56,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:42:56,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1445646548, now seen corresponding path program 1 times [2020-09-24 14:42:56,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:42:56,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852609650] [2020-09-24 14:42:56,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:42:56,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:56,497 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:42:56,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:42:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:56,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:42:56,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:56,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:42:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:56,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:42:56,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:56,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:42:56,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:56,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:42:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:56,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 14:42:56,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:56,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 14:42:56,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:56,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-24 14:42:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:56,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:42:56,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:56,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 14:42:56,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:56,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 14:42:56,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:56,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:42:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:56,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:42:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:56,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 14:42:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:56,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-09-24 14:42:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:56,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-09-24 14:42:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:42:57,053 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 14:42:57,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852609650] [2020-09-24 14:42:57,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 14:42:57,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-24 14:42:57,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413239899] [2020-09-24 14:42:57,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 14:42:57,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:42:57,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 14:42:57,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2020-09-24 14:42:57,057 INFO L87 Difference]: Start difference. First operand 2183 states and 2467 transitions. Second operand 21 states. [2020-09-24 14:42:57,706 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:42:58,193 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 14:42:58,519 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-24 14:42:58,847 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:42:59,172 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-24 14:42:59,486 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:43:00,578 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:43:01,524 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:43:01,953 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-24 14:43:02,453 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:43:02,825 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-24 14:43:04,496 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:43:04,948 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 195