/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_spec5_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 14:52:42,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 14:52:42,444 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 14:52:42,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 14:52:42,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 14:52:42,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 14:52:42,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 14:52:42,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 14:52:42,479 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 14:52:42,480 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 14:52:42,481 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 14:52:42,482 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 14:52:42,483 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 14:52:42,484 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 14:52:42,485 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 14:52:42,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 14:52:42,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 14:52:42,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 14:52:42,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 14:52:42,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 14:52:42,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 14:52:42,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 14:52:42,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 14:52:42,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 14:52:42,510 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 14:52:42,510 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 14:52:42,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 14:52:42,514 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 14:52:42,514 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 14:52:42,517 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 14:52:42,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 14:52:42,519 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 14:52:42,520 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 14:52:42,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 14:52:42,523 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 14:52:42,523 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 14:52:42,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 14:52:42,524 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 14:52:42,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 14:52:42,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 14:52:42,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 14:52:42,528 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 14:52:42,588 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 14:52:42,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 14:52:42,591 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 14:52:42,591 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 14:52:42,591 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 14:52:42,592 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 14:52:42,593 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 14:52:42,593 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 14:52:42,593 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 14:52:42,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 14:52:42,593 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 14:52:42,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 14:52:42,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 14:52:42,595 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 14:52:42,595 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 14:52:42,595 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 14:52:42,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 14:52:42,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 14:52:42,596 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 14:52:42,597 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 14:52:42,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 14:52:42,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:52:42,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 14:52:42,597 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 14:52:42,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 14:52:42,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 14:52:42,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 14:52:42,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 14:52:42,599 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 14:52:42,599 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 14:52:43,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 14:52:43,108 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 14:52:43,113 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 14:52:43,117 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 14:52:43,118 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 14:52:43,119 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product62.cil.c [2020-09-24 14:52:43,209 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ef46572f/d05baa9e42634d28b9ff5a2b1a8bb364/FLAGf6c7b6364 [2020-09-24 14:52:43,801 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 14:52:43,802 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product62.cil.c [2020-09-24 14:52:43,819 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ef46572f/d05baa9e42634d28b9ff5a2b1a8bb364/FLAGf6c7b6364 [2020-09-24 14:52:44,080 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ef46572f/d05baa9e42634d28b9ff5a2b1a8bb364 [2020-09-24 14:52:44,095 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 14:52:44,103 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 14:52:44,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 14:52:44,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 14:52:44,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 14:52:44,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:52:44" (1/1) ... [2020-09-24 14:52:44,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78532141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:52:44, skipping insertion in model container [2020-09-24 14:52:44,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:52:44" (1/1) ... [2020-09-24 14:52:44,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 14:52:44,199 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 14:52:44,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:52:44,617 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 14:52:44,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:52:44,887 INFO L208 MainTranslator]: Completed translation [2020-09-24 14:52:44,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:52:44 WrapperNode [2020-09-24 14:52:44,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 14:52:44,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 14:52:44,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 14:52:44,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 14:52:44,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:52:44" (1/1) ... [2020-09-24 14:52:44,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:52:44" (1/1) ... [2020-09-24 14:52:44,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:52:44" (1/1) ... [2020-09-24 14:52:44,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:52:44" (1/1) ... [2020-09-24 14:52:44,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:52:44" (1/1) ... [2020-09-24 14:52:44,972 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:52:44" (1/1) ... [2020-09-24 14:52:44,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:52:44" (1/1) ... [2020-09-24 14:52:44,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 14:52:44,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 14:52:44,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 14:52:44,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 14:52:44,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:52:44" (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 14:52:45,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 14:52:45,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 14:52:45,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 14:52:45,086 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 14:52:45,086 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 14:52:45,086 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 14:52:45,087 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-09-24 14:52:45,087 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 14:52:45,087 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-09-24 14:52:45,087 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 14:52:45,087 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 14:52:45,088 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 14:52:45,088 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 14:52:45,088 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 14:52:45,088 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 14:52:45,088 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-24 14:52:45,089 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-24 14:52:45,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-09-24 14:52:45,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-09-24 14:52:45,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-09-24 14:52:45,089 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 14:52:45,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 14:52:45,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 14:52:45,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 14:52:45,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 14:52:45,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 14:52:45,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 14:52:45,091 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 14:52:45,091 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 14:52:45,091 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 14:52:45,091 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 14:52:45,091 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 14:52:45,092 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 14:52:45,092 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 14:52:45,092 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-24 14:52:45,092 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 14:52:45,092 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 14:52:45,092 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 14:52:45,093 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 14:52:45,093 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 14:52:45,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 14:52:45,093 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 14:52:45,093 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 14:52:45,093 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 14:52:45,093 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 14:52:45,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 14:52:45,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 14:52:45,094 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 14:52:45,094 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 14:52:45,094 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 14:52:45,094 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 14:52:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 14:52:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-24 14:52:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 14:52:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 14:52:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 14:52:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 14:52:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 14:52:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-24 14:52:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-09-24 14:52:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-09-24 14:52:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 14:52:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 14:52:45,097 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 14:52:45,097 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 14:52:45,097 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-24 14:52:45,097 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-09-24 14:52:45,097 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 14:52:45,097 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-09-24 14:52:45,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 14:52:45,098 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 14:52:45,098 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 14:52:45,098 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-09-24 14:52:45,098 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 14:52:45,098 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 14:52:45,099 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 14:52:45,099 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 14:52:45,099 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 14:52:45,099 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 14:52:45,099 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 14:52:45,099 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 14:52:45,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 14:52:45,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 14:52:45,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 14:52:45,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 14:52:45,100 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 14:52:45,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 14:52:45,101 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 14:52:45,101 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 14:52:45,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 14:52:45,101 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 14:52:45,101 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 14:52:45,101 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 14:52:45,101 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 14:52:45,102 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 14:52:45,102 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 14:52:45,102 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 14:52:45,102 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 14:52:45,102 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 14:52:45,102 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 14:52:45,102 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 14:52:45,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 14:52:45,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 14:52:45,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 14:52:46,549 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 14:52:46,550 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 14:52:46,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:52:46 BoogieIcfgContainer [2020-09-24 14:52:46,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 14:52:46,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 14:52:46,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 14:52:46,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 14:52:46,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:52:44" (1/3) ... [2020-09-24 14:52:46,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7225d0cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:52:46, skipping insertion in model container [2020-09-24 14:52:46,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:52:44" (2/3) ... [2020-09-24 14:52:46,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7225d0cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:52:46, skipping insertion in model container [2020-09-24 14:52:46,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:52:46" (3/3) ... [2020-09-24 14:52:46,573 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product62.cil.c [2020-09-24 14:52:46,588 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 14:52:46,601 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 14:52:46,622 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 14:52:46,651 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 14:52:46,651 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 14:52:46,652 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 14:52:46,652 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 14:52:46,652 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 14:52:46,652 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 14:52:46,652 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 14:52:46,652 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 14:52:46,681 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states. [2020-09-24 14:52:46,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-24 14:52:46,699 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:52:46,701 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] [2020-09-24 14:52:46,702 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:52:46,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:52:46,708 INFO L82 PathProgramCache]: Analyzing trace with hash -593535945, now seen corresponding path program 1 times [2020-09-24 14:52:46,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:52:46,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254732233] [2020-09-24 14:52:46,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:52:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:47,563 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:52:47,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:52:47,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:47,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:52:47,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:47,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:52:47,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:47,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:52:47,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:47,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:52:47,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:47,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:52:47,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:47,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 14:52:47,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:47,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:52:47,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:47,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-24 14:52:47,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:47,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-09-24 14:52:47,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:47,758 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 14:52:47,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254732233] [2020-09-24 14:52:47,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:52:47,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 14:52:47,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816118422] [2020-09-24 14:52:47,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 14:52:47,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:52:47,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 14:52:47,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-24 14:52:47,792 INFO L87 Difference]: Start difference. First operand 363 states. Second operand 4 states. [2020-09-24 14:52:49,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:52:49,229 INFO L93 Difference]: Finished difference Result 589 states and 690 transitions. [2020-09-24 14:52:49,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 14:52:49,231 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-09-24 14:52:49,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:52:49,253 INFO L225 Difference]: With dead ends: 589 [2020-09-24 14:52:49,253 INFO L226 Difference]: Without dead ends: 362 [2020-09-24 14:52:49,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-24 14:52:49,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-09-24 14:52:49,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 312. [2020-09-24 14:52:49,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-09-24 14:52:49,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 342 transitions. [2020-09-24 14:52:49,382 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 342 transitions. Word has length 160 [2020-09-24 14:52:49,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:52:49,384 INFO L479 AbstractCegarLoop]: Abstraction has 312 states and 342 transitions. [2020-09-24 14:52:49,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 14:52:49,385 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 342 transitions. [2020-09-24 14:52:49,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-24 14:52:49,398 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:52:49,399 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] [2020-09-24 14:52:49,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 14:52:49,399 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:52:49,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:52:49,400 INFO L82 PathProgramCache]: Analyzing trace with hash 151672551, now seen corresponding path program 1 times [2020-09-24 14:52:49,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:52:49,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283828914] [2020-09-24 14:52:49,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:52:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:49,917 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:52:49,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:52:49,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:49,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:52:49,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:49,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:52:49,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:49,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:52:49,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:49,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:52:49,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:50,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:52:50,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:50,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 14:52:50,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:50,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:52:50,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:50,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-24 14:52:50,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:50,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-24 14:52:50,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:50,051 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 14:52:50,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283828914] [2020-09-24 14:52:50,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:52:50,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 14:52:50,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128854518] [2020-09-24 14:52:50,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 14:52:50,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:52:50,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 14:52:50,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 14:52:50,057 INFO L87 Difference]: Start difference. First operand 312 states and 342 transitions. Second operand 5 states. [2020-09-24 14:52:50,753 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:52:52,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:52:52,117 INFO L93 Difference]: Finished difference Result 514 states and 582 transitions. [2020-09-24 14:52:52,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 14:52:52,125 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-24 14:52:52,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:52:52,129 INFO L225 Difference]: With dead ends: 514 [2020-09-24 14:52:52,129 INFO L226 Difference]: Without dead ends: 351 [2020-09-24 14:52:52,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 14:52:52,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-09-24 14:52:52,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 302. [2020-09-24 14:52:52,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-09-24 14:52:52,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 329 transitions. [2020-09-24 14:52:52,180 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 329 transitions. Word has length 161 [2020-09-24 14:52:52,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:52:52,181 INFO L479 AbstractCegarLoop]: Abstraction has 302 states and 329 transitions. [2020-09-24 14:52:52,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 14:52:52,181 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 329 transitions. [2020-09-24 14:52:52,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-24 14:52:52,184 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:52:52,184 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] [2020-09-24 14:52:52,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 14:52:52,185 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:52:52,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:52:52,185 INFO L82 PathProgramCache]: Analyzing trace with hash 530344647, now seen corresponding path program 1 times [2020-09-24 14:52:52,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:52:52,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455820256] [2020-09-24 14:52:52,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:52:52,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:52,607 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:52:52,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:52:52,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:52,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:52:52,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:52,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:52:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:52,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:52:52,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:52,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:52:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:52,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:52:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:52,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-24 14:52:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:52,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 14:52:52,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:52,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:52:52,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:52,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-24 14:52:52,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:52,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-09-24 14:52:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:52,822 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 14:52:52,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455820256] [2020-09-24 14:52:52,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:52:52,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 14:52:52,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42519205] [2020-09-24 14:52:52,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 14:52:52,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:52:52,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 14:52:52,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 14:52:52,825 INFO L87 Difference]: Start difference. First operand 302 states and 329 transitions. Second operand 11 states. [2020-09-24 14:52:53,421 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:52:53,886 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:52:54,252 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-24 14:52:54,530 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:52:54,846 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 14:52:55,136 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:52:57,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:52:57,345 INFO L93 Difference]: Finished difference Result 561 states and 647 transitions. [2020-09-24 14:52:57,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 14:52:57,346 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 174 [2020-09-24 14:52:57,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:52:57,351 INFO L225 Difference]: With dead ends: 561 [2020-09-24 14:52:57,351 INFO L226 Difference]: Without dead ends: 374 [2020-09-24 14:52:57,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2020-09-24 14:52:57,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2020-09-24 14:52:57,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 302. [2020-09-24 14:52:57,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-09-24 14:52:57,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 328 transitions. [2020-09-24 14:52:57,434 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 328 transitions. Word has length 174 [2020-09-24 14:52:57,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:52:57,436 INFO L479 AbstractCegarLoop]: Abstraction has 302 states and 328 transitions. [2020-09-24 14:52:57,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 14:52:57,436 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 328 transitions. [2020-09-24 14:52:57,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-24 14:52:57,440 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:52:57,440 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] [2020-09-24 14:52:57,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 14:52:57,441 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:52:57,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:52:57,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1028091402, now seen corresponding path program 1 times [2020-09-24 14:52:57,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:52:57,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375533209] [2020-09-24 14:52:57,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:52:57,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:57,839 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:52:57,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:52:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:57,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:52:57,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:57,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:52:57,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:57,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:52:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:57,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:52:57,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:57,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:52:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:57,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-24 14:52:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:57,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 14:52:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:57,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:52:57,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:57,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-24 14:52:57,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:57,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:52:57,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:57,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:52:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:57,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:52:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:57,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-24 14:52:57,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:57,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-09-24 14:52:57,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:52:58,035 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 14:52:58,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375533209] [2020-09-24 14:52:58,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:52:58,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 14:52:58,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360153879] [2020-09-24 14:52:58,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 14:52:58,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:52:58,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 14:52:58,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-24 14:52:58,040 INFO L87 Difference]: Start difference. First operand 302 states and 328 transitions. Second operand 8 states. [2020-09-24 14:52:58,712 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:53:00,935 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:53:01,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:53:01,920 INFO L93 Difference]: Finished difference Result 769 states and 911 transitions. [2020-09-24 14:53:01,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 14:53:01,920 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 192 [2020-09-24 14:53:01,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:53:01,928 INFO L225 Difference]: With dead ends: 769 [2020-09-24 14:53:01,929 INFO L226 Difference]: Without dead ends: 582 [2020-09-24 14:53:01,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2020-09-24 14:53:01,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2020-09-24 14:53:01,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 444. [2020-09-24 14:53:01,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-09-24 14:53:01,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 479 transitions. [2020-09-24 14:53:01,988 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 479 transitions. Word has length 192 [2020-09-24 14:53:01,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:53:01,989 INFO L479 AbstractCegarLoop]: Abstraction has 444 states and 479 transitions. [2020-09-24 14:53:01,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 14:53:01,989 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 479 transitions. [2020-09-24 14:53:01,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-24 14:53:01,992 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:53:01,993 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] [2020-09-24 14:53:01,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 14:53:01,993 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:53:01,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:53:01,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1796704782, now seen corresponding path program 1 times [2020-09-24 14:53:01,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:53:01,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534754643] [2020-09-24 14:53:01,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:53:02,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:02,361 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:53:02,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:53:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:02,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:53:02,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:02,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:53:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:02,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:53:02,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:02,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:53:02,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:02,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:53:02,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:02,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-24 14:53:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:02,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 14:53:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:02,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:53:02,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:02,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-24 14:53:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:02,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:53:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:02,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:53:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:02,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:53:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:02,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 14:53:02,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:02,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 14:53:02,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:02,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-09-24 14:53:02,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:02,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-09-24 14:53:02,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:02,634 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 14:53:02,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534754643] [2020-09-24 14:53:02,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:53:02,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 14:53:02,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952418522] [2020-09-24 14:53:02,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 14:53:02,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:53:02,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 14:53:02,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 14:53:02,637 INFO L87 Difference]: Start difference. First operand 444 states and 479 transitions. Second operand 11 states. [2020-09-24 14:53:03,161 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:53:04,134 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:53:04,453 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 14:53:05,878 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:53:06,193 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:53:06,560 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:53:07,258 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:53:07,584 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 14:53:07,887 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:53:08,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:53:08,800 INFO L93 Difference]: Finished difference Result 910 states and 1054 transitions. [2020-09-24 14:53:08,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 14:53:08,801 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 216 [2020-09-24 14:53:08,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:53:08,805 INFO L225 Difference]: With dead ends: 910 [2020-09-24 14:53:08,806 INFO L226 Difference]: Without dead ends: 581 [2020-09-24 14:53:08,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=261, Invalid=669, Unknown=0, NotChecked=0, Total=930 [2020-09-24 14:53:08,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-09-24 14:53:08,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 443. [2020-09-24 14:53:08,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-09-24 14:53:08,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 476 transitions. [2020-09-24 14:53:08,889 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 476 transitions. Word has length 216 [2020-09-24 14:53:08,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:53:08,890 INFO L479 AbstractCegarLoop]: Abstraction has 443 states and 476 transitions. [2020-09-24 14:53:08,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 14:53:08,890 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 476 transitions. [2020-09-24 14:53:08,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-24 14:53:08,894 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:53:08,895 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:53:08,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 14:53:08,895 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:53:08,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:53:08,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1088421938, now seen corresponding path program 1 times [2020-09-24 14:53:08,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:53:08,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116648121] [2020-09-24 14:53:08,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:53:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:09,278 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:53:09,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:53:09,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:09,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:53:09,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:09,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:53:09,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:09,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:53:09,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:09,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:53:09,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:09,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:53:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:09,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-24 14:53:09,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:09,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 14:53:09,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:09,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:53:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:09,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-24 14:53:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:09,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:53:09,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:09,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:53:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:09,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:53:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:09,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 14:53:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:09,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 14:53:09,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:09,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:53:09,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:09,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:53:09,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:09,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 14:53:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:09,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-09-24 14:53:09,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:09,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-09-24 14:53:09,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:09,589 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 14:53:09,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116648121] [2020-09-24 14:53:09,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:53:09,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 14:53:09,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002202470] [2020-09-24 14:53:09,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 14:53:09,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:53:09,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 14:53:09,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 14:53:09,593 INFO L87 Difference]: Start difference. First operand 443 states and 476 transitions. Second operand 11 states. [2020-09-24 14:53:11,141 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:53:11,469 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-24 14:53:11,831 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-09-24 14:53:12,138 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:53:12,464 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:53:12,776 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:53:14,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:53:14,318 INFO L93 Difference]: Finished difference Result 913 states and 1065 transitions. [2020-09-24 14:53:14,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 14:53:14,319 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 239 [2020-09-24 14:53:14,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:53:14,324 INFO L225 Difference]: With dead ends: 913 [2020-09-24 14:53:14,324 INFO L226 Difference]: Without dead ends: 585 [2020-09-24 14:53:14,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-09-24 14:53:14,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2020-09-24 14:53:14,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 451. [2020-09-24 14:53:14,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2020-09-24 14:53:14,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 484 transitions. [2020-09-24 14:53:14,388 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 484 transitions. Word has length 239 [2020-09-24 14:53:14,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:53:14,389 INFO L479 AbstractCegarLoop]: Abstraction has 451 states and 484 transitions. [2020-09-24 14:53:14,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 14:53:14,389 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 484 transitions. [2020-09-24 14:53:14,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-24 14:53:14,393 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:53:14,393 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:53:14,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 14:53:14,394 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:53:14,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:53:14,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1452382062, now seen corresponding path program 1 times [2020-09-24 14:53:14,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:53:14,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244574016] [2020-09-24 14:53:14,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:53:14,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:14,785 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:53:14,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:53:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:14,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:53:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:14,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:53:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:14,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:53:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:14,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:53:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:14,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:53:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:14,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-24 14:53:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:14,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 14:53:14,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:14,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:53:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:14,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-24 14:53:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:14,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:53:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:14,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:53:14,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:14,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:53:14,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:14,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 14:53:14,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:15,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 14:53:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:15,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:53:15,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:15,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:53:15,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:15,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 14:53:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:15,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-09-24 14:53:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:15,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-09-24 14:53:15,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:15,093 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 14:53:15,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244574016] [2020-09-24 14:53:15,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:53:15,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-24 14:53:15,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425460842] [2020-09-24 14:53:15,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 14:53:15,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:53:15,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 14:53:15,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-24 14:53:15,101 INFO L87 Difference]: Start difference. First operand 451 states and 484 transitions. Second operand 14 states. [2020-09-24 14:53:15,773 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:53:16,097 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-24 14:53:16,429 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:53:16,743 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:53:17,055 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:53:18,258 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:53:18,569 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:53:18,890 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:53:19,262 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 14:53:19,572 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:53:21,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:53:21,589 INFO L93 Difference]: Finished difference Result 930 states and 1083 transitions. [2020-09-24 14:53:21,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 14:53:21,590 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 239 [2020-09-24 14:53:21,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:53:21,594 INFO L225 Difference]: With dead ends: 930 [2020-09-24 14:53:21,594 INFO L226 Difference]: Without dead ends: 594 [2020-09-24 14:53:21,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-09-24 14:53:21,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2020-09-24 14:53:21,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 457. [2020-09-24 14:53:21,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2020-09-24 14:53:21,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 490 transitions. [2020-09-24 14:53:21,651 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 490 transitions. Word has length 239 [2020-09-24 14:53:21,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:53:21,652 INFO L479 AbstractCegarLoop]: Abstraction has 457 states and 490 transitions. [2020-09-24 14:53:21,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 14:53:21,652 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 490 transitions. [2020-09-24 14:53:21,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-24 14:53:21,654 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:53:21,655 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:53:21,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 14:53:21,655 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:53:21,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:53:21,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1511087183, now seen corresponding path program 1 times [2020-09-24 14:53:21,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:53:21,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202298263] [2020-09-24 14:53:21,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:53:21,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:21,984 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:53:21,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:53:22,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:22,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:53:22,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:22,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:53:22,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:22,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:53:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:22,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:53:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:22,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:53:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:22,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-24 14:53:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:22,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 14:53:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:22,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:53:22,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:22,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-24 14:53:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:22,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:53:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:22,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:53:22,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:22,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:53:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:22,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 14:53:22,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:22,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 14:53:22,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:22,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:53:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:22,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:53:22,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:22,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 14:53:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:22,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-09-24 14:53:22,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:22,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-09-24 14:53:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:22,341 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 14:53:22,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202298263] [2020-09-24 14:53:22,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:53:22,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 14:53:22,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477873287] [2020-09-24 14:53:22,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 14:53:22,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:53:22,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 14:53:22,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-24 14:53:22,344 INFO L87 Difference]: Start difference. First operand 457 states and 490 transitions. Second operand 8 states. [2020-09-24 14:53:22,891 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:53:23,617 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:53:27,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:53:27,033 INFO L93 Difference]: Finished difference Result 1271 states and 1519 transitions. [2020-09-24 14:53:27,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-24 14:53:27,036 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 239 [2020-09-24 14:53:27,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:53:27,041 INFO L225 Difference]: With dead ends: 1271 [2020-09-24 14:53:27,042 INFO L226 Difference]: Without dead ends: 929 [2020-09-24 14:53:27,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 52 SyntacticMatches, 4 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 14:53:27,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2020-09-24 14:53:27,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 722. [2020-09-24 14:53:27,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 722 states. [2020-09-24 14:53:27,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 794 transitions. [2020-09-24 14:53:27,134 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 794 transitions. Word has length 239 [2020-09-24 14:53:27,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:53:27,135 INFO L479 AbstractCegarLoop]: Abstraction has 722 states and 794 transitions. [2020-09-24 14:53:27,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 14:53:27,135 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 794 transitions. [2020-09-24 14:53:27,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-24 14:53:27,137 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:53:27,138 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:53:27,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 14:53:27,138 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:53:27,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:53:27,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1367745327, now seen corresponding path program 1 times [2020-09-24 14:53:27,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:53:27,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738267716] [2020-09-24 14:53:27,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:53:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:27,610 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 14:53:27,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:53:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:27,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 14:53:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:27,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 14:53:27,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:27,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 14:53:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:27,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 14:53:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:27,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 14:53:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:27,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 14:53:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:27,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-24 14:53:27,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:27,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 14:53:27,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:27,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:53:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:27,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-09-24 14:53:27,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:27,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:53:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:27,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:53:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:27,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 14:53:27,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:27,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 14:53:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:27,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 14:53:27,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:27,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:53:27,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:27,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 14:53:27,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:27,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 14:53:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:27,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-09-24 14:53:27,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:27,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-09-24 14:53:27,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:27,970 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 14:53:27,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738267716] [2020-09-24 14:53:27,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:53:27,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-24 14:53:27,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180668801] [2020-09-24 14:53:27,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 14:53:27,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:53:27,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 14:53:27,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-09-24 14:53:27,972 INFO L87 Difference]: Start difference. First operand 722 states and 794 transitions. Second operand 15 states. [2020-09-24 14:53:28,813 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 189 [2020-09-24 14:53:29,711 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:53:31,840 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 191 [2020-09-24 14:53:32,490 WARN L193 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-09-24 14:53:32,884 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:53:33,208 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 14:53:33,856 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-09-24 14:53:34,174 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:53:34,562 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 14:53:34,895 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:53:37,150 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 14:53:37,468 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-24 14:53:37,852 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 14:53:38,560 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-09-24 14:53:40,427 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 191 [2020-09-24 14:53:41,049 WARN L193 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 193