/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 15:39:12,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:39:12,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:39:12,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 15:39:12,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 15:39:12,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 15:39:12,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 15:39:12,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 15:39:12,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 15:39:12,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 15:39:12,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 15:39:12,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 15:39:12,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:39:12,114 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:39:12,116 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:39:12,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:39:12,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:39:12,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:39:12,122 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:39:12,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:39:12,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:39:12,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:39:12,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:39:12,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:39:12,147 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 15:39:12,152 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 15:39:12,152 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 15:39:12,153 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 15:39:12,154 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 15:39:12,154 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 15:39:12,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 15:39:12,155 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 15:39:12,156 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 15:39:12,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 15:39:12,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 15:39:12,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 15:39:12,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 15:39:12,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 15:39:12,162 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 15:39:12,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 15:39:12,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 15:39:12,167 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 15:39:12,205 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:39:12,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:39:12,207 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:39:12,207 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:39:12,208 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:39:12,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:39:12,208 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 15:39:12,208 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:39:12,209 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 15:39:12,209 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:39:12,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:39:12,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:39:12,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:39:12,211 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 15:39:12,211 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:39:12,211 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:39:12,211 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:39:12,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:39:12,212 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:39:12,212 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:39:12,212 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:39:12,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:39:12,213 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:39:12,213 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:39:12,213 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:39:12,213 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:39:12,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:39:12,214 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:39:12,214 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:39:12,214 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 15:39:12,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:39:12,559 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:39:12,562 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:39:12,564 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:39:12,564 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:39:12,565 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product50.cil.c [2020-08-21 15:39:12,626 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b6195378/dcd1ed1c04ff40489d28473f7d201bc3/FLAG01c32e1a8 [2020-08-21 15:39:13,168 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:39:13,169 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product50.cil.c [2020-08-21 15:39:13,183 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b6195378/dcd1ed1c04ff40489d28473f7d201bc3/FLAG01c32e1a8 [2020-08-21 15:39:13,472 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b6195378/dcd1ed1c04ff40489d28473f7d201bc3 [2020-08-21 15:39:13,480 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:39:13,481 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:39:13,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:39:13,482 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:39:13,486 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:39:13,487 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:39:13" (1/1) ... [2020-08-21 15:39:13,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f43fca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:39:13, skipping insertion in model container [2020-08-21 15:39:13,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:39:13" (1/1) ... [2020-08-21 15:39:13,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:39:13,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:39:13,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:39:13,963 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:39:14,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:39:14,089 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:39:14,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:39:14 WrapperNode [2020-08-21 15:39:14,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:39:14,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:39:14,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:39:14,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:39:14,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:39:14" (1/1) ... [2020-08-21 15:39:14,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:39:14" (1/1) ... [2020-08-21 15:39:14,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:39:14" (1/1) ... [2020-08-21 15:39:14,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:39:14" (1/1) ... [2020-08-21 15:39:14,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:39:14" (1/1) ... [2020-08-21 15:39:14,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:39:14" (1/1) ... [2020-08-21 15:39:14,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:39:14" (1/1) ... [2020-08-21 15:39:14,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:39:14,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:39:14,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:39:14,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:39:14,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:39:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:39:14,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:39:14,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:39:14,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 15:39:14,247 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 15:39:14,248 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 15:39:14,248 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 15:39:14,248 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 15:39:14,248 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 15:39:14,248 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 15:39:14,249 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 15:39:14,249 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 15:39:14,249 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 15:39:14,250 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 15:39:14,250 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 15:39:14,250 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 15:39:14,251 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 15:39:14,251 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 15:39:14,251 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 15:39:14,251 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 15:39:14,251 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 15:39:14,252 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 15:39:14,252 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 15:39:14,252 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 15:39:14,253 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 15:39:14,254 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 15:39:14,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 15:39:14,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 15:39:14,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 15:39:14,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 15:39:14,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 15:39:14,256 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 15:39:14,256 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-21 15:39:14,256 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-21 15:39:14,256 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-21 15:39:14,256 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 15:39:14,256 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 15:39:14,257 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 15:39:14,257 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 15:39:14,257 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 15:39:14,257 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 15:39:14,257 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 15:39:14,257 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 15:39:14,257 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:39:14,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:39:14,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 15:39:14,257 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 15:39:14,258 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 15:39:14,258 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 15:39:14,258 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 15:39:14,258 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 15:39:14,258 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 15:39:14,258 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 15:39:14,258 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 15:39:14,258 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 15:39:14,258 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 15:39:14,259 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 15:39:14,259 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 15:39:14,259 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 15:39:14,259 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-21 15:39:14,259 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-21 15:39:14,259 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 15:39:14,259 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 15:39:14,260 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 15:39:14,260 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 15:39:14,260 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 15:39:14,260 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 15:39:14,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 15:39:14,260 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 15:39:14,260 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 15:39:14,260 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 15:39:14,260 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 15:39:14,260 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 15:39:14,261 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 15:39:14,261 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 15:39:14,261 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 15:39:14,261 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 15:39:14,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 15:39:14,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 15:39:14,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 15:39:14,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 15:39:14,262 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 15:39:14,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 15:39:14,262 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 15:39:14,262 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 15:39:14,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 15:39:14,263 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 15:39:14,263 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 15:39:14,263 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 15:39:14,263 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-21 15:39:14,263 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 15:39:14,263 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 15:39:14,263 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 15:39:14,263 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 15:39:14,264 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 15:39:14,264 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 15:39:14,264 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 15:39:14,264 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:39:14,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:39:14,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 15:39:14,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:39:15,343 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:39:15,343 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 15:39:15,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:39:15 BoogieIcfgContainer [2020-08-21 15:39:15,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:39:15,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:39:15,358 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:39:15,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:39:15,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:39:13" (1/3) ... [2020-08-21 15:39:15,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@226badf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:39:15, skipping insertion in model container [2020-08-21 15:39:15,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:39:14" (2/3) ... [2020-08-21 15:39:15,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@226badf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:39:15, skipping insertion in model container [2020-08-21 15:39:15,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:39:15" (3/3) ... [2020-08-21 15:39:15,366 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product50.cil.c [2020-08-21 15:39:15,376 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:39:15,386 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 15:39:15,401 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 15:39:15,422 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:39:15,422 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:39:15,422 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:39:15,422 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:39:15,423 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:39:15,423 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:39:15,423 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:39:15,423 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:39:15,446 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states. [2020-08-21 15:39:15,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 15:39:15,456 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:39:15,458 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:39:15,458 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:39:15,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:39:15,464 INFO L82 PathProgramCache]: Analyzing trace with hash 2053229239, now seen corresponding path program 1 times [2020-08-21 15:39:15,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:39:15,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869149819] [2020-08-21 15:39:15,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:39:15,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:16,231 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:39:16,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:16,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:16,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:39:16,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:16,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:16,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:16,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:39:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:16,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:39:16,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:16,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:16,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:39:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:16,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:16,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:16,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 15:39:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:16,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 15:39:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:16,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:39:16,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869149819] [2020-08-21 15:39:16,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:39:16,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 15:39:16,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884309311] [2020-08-21 15:39:16,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 15:39:16,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:39:16,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 15:39:16,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 15:39:16,358 INFO L87 Difference]: Start difference. First operand 185 states. Second operand 4 states. [2020-08-21 15:39:17,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:39:17,477 INFO L93 Difference]: Finished difference Result 313 states and 401 transitions. [2020-08-21 15:39:17,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 15:39:17,480 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 15:39:17,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:39:17,495 INFO L225 Difference]: With dead ends: 313 [2020-08-21 15:39:17,495 INFO L226 Difference]: Without dead ends: 172 [2020-08-21 15:39:17,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 15:39:17,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-21 15:39:17,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 142. [2020-08-21 15:39:17,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-08-21 15:39:17,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 166 transitions. [2020-08-21 15:39:17,654 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 166 transitions. Word has length 59 [2020-08-21 15:39:17,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:39:17,655 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 166 transitions. [2020-08-21 15:39:17,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 15:39:17,655 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 166 transitions. [2020-08-21 15:39:17,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 15:39:17,662 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:39:17,662 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:39:17,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:39:17,663 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:39:17,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:39:17,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1701396789, now seen corresponding path program 1 times [2020-08-21 15:39:17,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:39:17,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31474157] [2020-08-21 15:39:17,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:39:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:17,995 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:39:17,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:18,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:39:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:18,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:18,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:39:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:18,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:39:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:18,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:18,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 15:39:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:18,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:18,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 15:39:18,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:18,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 15:39:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:18,049 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:39:18,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31474157] [2020-08-21 15:39:18,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:39:18,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 15:39:18,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106772486] [2020-08-21 15:39:18,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 15:39:18,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:39:18,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 15:39:18,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:39:18,053 INFO L87 Difference]: Start difference. First operand 142 states and 166 transitions. Second operand 5 states. [2020-08-21 15:39:18,524 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:39:19,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:39:19,508 INFO L93 Difference]: Finished difference Result 254 states and 309 transitions. [2020-08-21 15:39:19,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 15:39:19,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-21 15:39:19,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:39:19,517 INFO L225 Difference]: With dead ends: 254 [2020-08-21 15:39:19,517 INFO L226 Difference]: Without dead ends: 162 [2020-08-21 15:39:19,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 15:39:19,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-21 15:39:19,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 133. [2020-08-21 15:39:19,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-21 15:39:19,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 154 transitions. [2020-08-21 15:39:19,580 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 154 transitions. Word has length 60 [2020-08-21 15:39:19,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:39:19,580 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 154 transitions. [2020-08-21 15:39:19,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 15:39:19,580 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 154 transitions. [2020-08-21 15:39:19,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 15:39:19,588 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:39:19,589 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:39:19,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 15:39:19,589 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:39:19,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:39:19,589 INFO L82 PathProgramCache]: Analyzing trace with hash -835538636, now seen corresponding path program 1 times [2020-08-21 15:39:19,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:39:19,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093794248] [2020-08-21 15:39:19,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:39:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:19,996 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:39:19,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:20,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:20,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:39:20,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:20,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:20,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:20,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:39:20,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:20,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:39:20,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:20,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:20,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:20,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:39:20,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:20,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:20,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 15:39:20,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:20,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 15:39:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:20,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:39:20,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093794248] [2020-08-21 15:39:20,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:39:20,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 15:39:20,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754836264] [2020-08-21 15:39:20,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 15:39:20,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:39:20,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 15:39:20,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:39:20,125 INFO L87 Difference]: Start difference. First operand 133 states and 154 transitions. Second operand 9 states. [2020-08-21 15:39:20,549 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:39:20,916 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:21,145 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:21,403 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:22,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:39:22,740 INFO L93 Difference]: Finished difference Result 267 states and 328 transitions. [2020-08-21 15:39:22,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 15:39:22,744 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-21 15:39:22,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:39:22,746 INFO L225 Difference]: With dead ends: 267 [2020-08-21 15:39:22,747 INFO L226 Difference]: Without dead ends: 162 [2020-08-21 15:39:22,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 15:39:22,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-21 15:39:22,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 133. [2020-08-21 15:39:22,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-21 15:39:22,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 153 transitions. [2020-08-21 15:39:22,786 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 153 transitions. Word has length 65 [2020-08-21 15:39:22,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:39:22,786 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 153 transitions. [2020-08-21 15:39:22,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 15:39:22,787 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 153 transitions. [2020-08-21 15:39:22,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-21 15:39:22,788 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:39:22,788 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:39:22,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 15:39:22,789 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:39:22,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:39:22,789 INFO L82 PathProgramCache]: Analyzing trace with hash -192684169, now seen corresponding path program 1 times [2020-08-21 15:39:22,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:39:22,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320417173] [2020-08-21 15:39:22,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:39:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:23,100 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:39:23,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:23,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:23,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:39:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:23,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:23,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:23,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:39:23,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:23,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:39:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:23,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:23,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:39:23,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:23,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:23,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 15:39:23,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:23,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:23,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:23,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:23,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-21 15:39:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:23,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 15:39:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:23,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:39:23,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320417173] [2020-08-21 15:39:23,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:39:23,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 15:39:23,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787076601] [2020-08-21 15:39:23,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 15:39:23,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:39:23,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 15:39:23,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 15:39:23,205 INFO L87 Difference]: Start difference. First operand 133 states and 153 transitions. Second operand 7 states. [2020-08-21 15:39:23,560 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:39:25,011 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:39:25,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:39:25,624 INFO L93 Difference]: Finished difference Result 371 states and 462 transitions. [2020-08-21 15:39:25,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 15:39:25,625 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-08-21 15:39:25,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:39:25,630 INFO L225 Difference]: With dead ends: 371 [2020-08-21 15:39:25,631 INFO L226 Difference]: Without dead ends: 266 [2020-08-21 15:39:25,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-21 15:39:25,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-08-21 15:39:25,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 220. [2020-08-21 15:39:25,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-08-21 15:39:25,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 252 transitions. [2020-08-21 15:39:25,677 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 252 transitions. Word has length 78 [2020-08-21 15:39:25,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:39:25,678 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 252 transitions. [2020-08-21 15:39:25,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 15:39:25,678 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 252 transitions. [2020-08-21 15:39:25,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 15:39:25,680 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:39:25,680 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:39:25,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 15:39:25,681 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:39:25,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:39:25,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1827957124, now seen corresponding path program 1 times [2020-08-21 15:39:25,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:39:25,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52931446] [2020-08-21 15:39:25,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:39:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:25,961 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:39:25,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:25,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:25,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:39:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:25,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:25,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:39:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:25,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:39:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:26,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:26,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:39:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:26,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:26,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:26,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 15:39:26,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:26,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:26,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:26,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:26,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:26,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:26,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:26,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:39:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:26,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 15:39:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:26,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 15:39:26,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:26,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:39:26,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52931446] [2020-08-21 15:39:26,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:39:26,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 15:39:26,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018533779] [2020-08-21 15:39:26,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 15:39:26,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:39:26,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 15:39:26,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 15:39:26,123 INFO L87 Difference]: Start difference. First operand 220 states and 252 transitions. Second operand 12 states. [2020-08-21 15:39:26,658 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:39:26,908 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:39:27,156 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:39:27,937 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:39:28,186 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:39:28,482 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:28,736 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:29,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:39:29,646 INFO L93 Difference]: Finished difference Result 457 states and 556 transitions. [2020-08-21 15:39:29,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 15:39:29,647 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 92 [2020-08-21 15:39:29,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:39:29,650 INFO L225 Difference]: With dead ends: 457 [2020-08-21 15:39:29,650 INFO L226 Difference]: Without dead ends: 265 [2020-08-21 15:39:29,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-21 15:39:29,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-08-21 15:39:29,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 225. [2020-08-21 15:39:29,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-08-21 15:39:29,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 257 transitions. [2020-08-21 15:39:29,707 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 257 transitions. Word has length 92 [2020-08-21 15:39:29,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:39:29,708 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 257 transitions. [2020-08-21 15:39:29,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 15:39:29,708 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 257 transitions. [2020-08-21 15:39:29,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 15:39:29,710 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:39:29,710 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:39:29,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 15:39:29,710 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:39:29,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:39:29,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1850589378, now seen corresponding path program 1 times [2020-08-21 15:39:29,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:39:29,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161584930] [2020-08-21 15:39:29,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:39:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:30,039 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:39:30,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:30,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:39:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:30,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:30,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:39:30,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:30,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:39:30,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:30,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:30,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:39:30,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:30,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:30,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:30,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 15:39:30,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:30,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:30,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:30,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:30,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:39:30,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:30,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 15:39:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:30,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 15:39:30,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:30,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 15:39:30,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161584930] [2020-08-21 15:39:30,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:39:30,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 15:39:30,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799081768] [2020-08-21 15:39:30,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 15:39:30,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:39:30,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 15:39:30,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:39:30,177 INFO L87 Difference]: Start difference. First operand 225 states and 257 transitions. Second operand 9 states. [2020-08-21 15:39:30,628 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:39:31,273 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:31,978 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:39:32,278 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:39:32,767 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:32,996 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:33,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:39:33,562 INFO L93 Difference]: Finished difference Result 467 states and 566 transitions. [2020-08-21 15:39:33,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 15:39:33,563 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-21 15:39:33,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:39:33,566 INFO L225 Difference]: With dead ends: 467 [2020-08-21 15:39:33,566 INFO L226 Difference]: Without dead ends: 270 [2020-08-21 15:39:33,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 15:39:33,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-08-21 15:39:33,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 224. [2020-08-21 15:39:33,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-08-21 15:39:33,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 254 transitions. [2020-08-21 15:39:33,611 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 254 transitions. Word has length 92 [2020-08-21 15:39:33,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:39:33,611 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 254 transitions. [2020-08-21 15:39:33,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 15:39:33,612 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 254 transitions. [2020-08-21 15:39:33,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 15:39:33,613 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:39:33,613 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:39:33,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 15:39:33,613 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:39:33,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:39:33,614 INFO L82 PathProgramCache]: Analyzing trace with hash 516367047, now seen corresponding path program 1 times [2020-08-21 15:39:33,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:39:33,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045936004] [2020-08-21 15:39:33,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:39:33,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:33,860 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:39:33,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:33,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:33,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:39:33,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:33,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:33,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:33,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:39:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:33,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:39:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:33,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:33,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:33,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:39:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:33,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:33,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:33,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 15:39:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:33,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:33,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:33,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:33,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:34,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:34,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:39:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:34,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 15:39:34,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:34,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 15:39:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:34,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:39:34,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045936004] [2020-08-21 15:39:34,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:39:34,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 15:39:34,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062728159] [2020-08-21 15:39:34,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 15:39:34,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:39:34,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 15:39:34,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 15:39:34,078 INFO L87 Difference]: Start difference. First operand 224 states and 254 transitions. Second operand 11 states. [2020-08-21 15:39:34,548 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:39:34,784 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:39:35,008 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:39:35,718 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:39:35,963 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:39:36,209 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:39:36,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:39:36,944 INFO L93 Difference]: Finished difference Result 467 states and 563 transitions. [2020-08-21 15:39:36,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 15:39:36,944 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-21 15:39:36,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:39:36,948 INFO L225 Difference]: With dead ends: 467 [2020-08-21 15:39:36,949 INFO L226 Difference]: Without dead ends: 271 [2020-08-21 15:39:36,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 15:39:36,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-08-21 15:39:37,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 228. [2020-08-21 15:39:37,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-08-21 15:39:37,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 258 transitions. [2020-08-21 15:39:37,011 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 258 transitions. Word has length 93 [2020-08-21 15:39:37,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:39:37,011 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 258 transitions. [2020-08-21 15:39:37,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 15:39:37,012 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 258 transitions. [2020-08-21 15:39:37,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 15:39:37,015 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:39:37,015 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:39:37,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 15:39:37,016 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:39:37,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:39:37,016 INFO L82 PathProgramCache]: Analyzing trace with hash -185232827, now seen corresponding path program 1 times [2020-08-21 15:39:37,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:39:37,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507514038] [2020-08-21 15:39:37,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:39:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:37,275 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:39:37,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:37,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:39:37,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:37,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:37,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:37,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:39:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:37,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:39:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:37,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:37,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:39:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:37,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:37,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 15:39:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:37,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:37,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:37,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:37,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:37,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:39:37,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:37,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 15:39:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:37,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 15:39:37,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:37,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:39:37,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507514038] [2020-08-21 15:39:37,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:39:37,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 15:39:37,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445645002] [2020-08-21 15:39:37,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 15:39:37,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:39:37,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 15:39:37,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:39:37,412 INFO L87 Difference]: Start difference. First operand 228 states and 258 transitions. Second operand 9 states. [2020-08-21 15:39:38,745 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:38,989 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 15:39:39,228 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:39:39,478 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:39:40,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:39:40,258 INFO L93 Difference]: Finished difference Result 468 states and 562 transitions. [2020-08-21 15:39:40,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 15:39:40,259 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-21 15:39:40,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:39:40,261 INFO L225 Difference]: With dead ends: 468 [2020-08-21 15:39:40,261 INFO L226 Difference]: Without dead ends: 268 [2020-08-21 15:39:40,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 15:39:40,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-08-21 15:39:40,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 228. [2020-08-21 15:39:40,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-08-21 15:39:40,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 257 transitions. [2020-08-21 15:39:40,305 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 257 transitions. Word has length 93 [2020-08-21 15:39:40,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:39:40,305 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 257 transitions. [2020-08-21 15:39:40,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 15:39:40,306 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 257 transitions. [2020-08-21 15:39:40,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 15:39:40,307 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:39:40,307 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:39:40,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 15:39:40,307 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:39:40,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:39:40,308 INFO L82 PathProgramCache]: Analyzing trace with hash -2053119352, now seen corresponding path program 1 times [2020-08-21 15:39:40,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:39:40,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029665815] [2020-08-21 15:39:40,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:39:40,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:40,633 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:39:40,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:40,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:40,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:39:40,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:40,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:40,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:39:40,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:40,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:39:40,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:40,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:40,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:40,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:39:40,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:40,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:40,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:40,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 15:39:40,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:40,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:40,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:40,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:40,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:39:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:40,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 15:39:40,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:40,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 15:39:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:40,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:39:40,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029665815] [2020-08-21 15:39:40,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:39:40,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 15:39:40,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224813964] [2020-08-21 15:39:40,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 15:39:40,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:39:40,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 15:39:40,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 15:39:40,801 INFO L87 Difference]: Start difference. First operand 228 states and 257 transitions. Second operand 7 states. [2020-08-21 15:39:41,259 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:39:41,848 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:39:43,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:39:43,365 INFO L93 Difference]: Finished difference Result 649 states and 806 transitions. [2020-08-21 15:39:43,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 15:39:43,366 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-08-21 15:39:43,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:39:43,370 INFO L225 Difference]: With dead ends: 649 [2020-08-21 15:39:43,370 INFO L226 Difference]: Without dead ends: 449 [2020-08-21 15:39:43,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-21 15:39:43,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2020-08-21 15:39:43,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 407. [2020-08-21 15:39:43,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-08-21 15:39:43,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 473 transitions. [2020-08-21 15:39:43,448 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 473 transitions. Word has length 93 [2020-08-21 15:39:43,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:39:43,449 INFO L479 AbstractCegarLoop]: Abstraction has 407 states and 473 transitions. [2020-08-21 15:39:43,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 15:39:43,449 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 473 transitions. [2020-08-21 15:39:43,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 15:39:43,450 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:39:43,451 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:39:43,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 15:39:43,451 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:39:43,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:39:43,452 INFO L82 PathProgramCache]: Analyzing trace with hash 868259694, now seen corresponding path program 1 times [2020-08-21 15:39:43,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:39:43,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266380390] [2020-08-21 15:39:43,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:39:43,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:43,821 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:39:43,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:43,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:43,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:39:43,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:43,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:43,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:39:43,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:43,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:39:43,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:43,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:43,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:39:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:43,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 15:39:43,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:43,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:43,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 15:39:43,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:43,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:43,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:43,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:43,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:43,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:39:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:43,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 15:39:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:43,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 15:39:43,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:43,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 15:39:43,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266380390] [2020-08-21 15:39:43,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:39:43,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 15:39:43,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88871] [2020-08-21 15:39:43,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 15:39:43,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:39:43,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 15:39:43,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 15:39:43,986 INFO L87 Difference]: Start difference. First operand 407 states and 473 transitions. Second operand 12 states. [2020-08-21 15:39:44,474 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:39:45,096 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:39:46,129 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:46,419 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:46,676 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:39:46,951 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:47,223 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:48,503 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:39:48,770 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:39:49,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:39:49,546 INFO L93 Difference]: Finished difference Result 1129 states and 1396 transitions. [2020-08-21 15:39:49,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 15:39:49,546 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 97 [2020-08-21 15:39:49,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:39:49,552 INFO L225 Difference]: With dead ends: 1129 [2020-08-21 15:39:49,552 INFO L226 Difference]: Without dead ends: 824 [2020-08-21 15:39:49,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 15:39:49,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2020-08-21 15:39:49,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 702. [2020-08-21 15:39:49,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-21 15:39:49,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 808 transitions. [2020-08-21 15:39:49,675 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 808 transitions. Word has length 97 [2020-08-21 15:39:49,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:39:49,676 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 808 transitions. [2020-08-21 15:39:49,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 15:39:49,676 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 808 transitions. [2020-08-21 15:39:49,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-08-21 15:39:49,678 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:39:49,679 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:39:49,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 15:39:49,679 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:39:49,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:39:49,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1063606964, now seen corresponding path program 1 times [2020-08-21 15:39:49,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:39:49,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591222317] [2020-08-21 15:39:49,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:39:49,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:50,005 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:39:50,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:50,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:39:50,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:50,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:50,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:50,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:39:50,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:50,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:39:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:50,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:50,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:50,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:39:50,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:50,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 15:39:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:50,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:50,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:50,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:50,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 15:39:50,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:50,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:50,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:50,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:50,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:50,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:50,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:39:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:50,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:39:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:50,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:50,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-21 15:39:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:50,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:50,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:50,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 15:39:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:50,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 15:39:50,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:50,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:50,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:50,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 15:39:50,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:50,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:50,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:50,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-21 15:39:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:50,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-21 15:39:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:50,295 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 15:39:50,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591222317] [2020-08-21 15:39:50,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:39:50,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 15:39:50,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049988292] [2020-08-21 15:39:50,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 15:39:50,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:39:50,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 15:39:50,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-21 15:39:50,298 INFO L87 Difference]: Start difference. First operand 702 states and 808 transitions. Second operand 16 states. [2020-08-21 15:39:50,888 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:39:51,223 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 15:39:51,480 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 15:39:51,730 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 15:39:52,379 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:39:52,683 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:39:53,416 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:39:53,766 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 15:39:54,623 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:54,892 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 15:39:55,141 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:39:55,441 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:39:55,975 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:39:56,389 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:39:56,748 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 15:39:57,343 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:39:57,604 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 15:39:58,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:39:58,116 INFO L93 Difference]: Finished difference Result 1547 states and 1835 transitions. [2020-08-21 15:39:58,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-08-21 15:39:58,117 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 159 [2020-08-21 15:39:58,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:39:58,126 INFO L225 Difference]: With dead ends: 1547 [2020-08-21 15:39:58,126 INFO L226 Difference]: Without dead ends: 943 [2020-08-21 15:39:58,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=568, Invalid=2084, Unknown=0, NotChecked=0, Total=2652 [2020-08-21 15:39:58,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2020-08-21 15:39:58,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 850. [2020-08-21 15:39:58,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2020-08-21 15:39:58,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 986 transitions. [2020-08-21 15:39:58,379 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 986 transitions. Word has length 159 [2020-08-21 15:39:58,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:39:58,387 INFO L479 AbstractCegarLoop]: Abstraction has 850 states and 986 transitions. [2020-08-21 15:39:58,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 15:39:58,387 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 986 transitions. [2020-08-21 15:39:58,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-08-21 15:39:58,399 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:39:58,400 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:39:58,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 15:39:58,401 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:39:58,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:39:58,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1141492594, now seen corresponding path program 1 times [2020-08-21 15:39:58,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:39:58,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409126801] [2020-08-21 15:39:58,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:39:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:58,817 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:39:58,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:58,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:39:58,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:58,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:58,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:39:58,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:58,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:39:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:58,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:39:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:58,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:39:58,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:58,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 15:39:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:58,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:58,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:58,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:58,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 15:39:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:58,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:58,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:58,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:58,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:58,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:39:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:58,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:39:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:59,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:59,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 15:39:59,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:59,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:59,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:59,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:59,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:59,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:59,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:59,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 15:39:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:59,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:59,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:59,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:59,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:59,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 15:39:59,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:59,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:59,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 15:39:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:59,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:59,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:59,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-21 15:39:59,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:59,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:59,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:59,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:59,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:59,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:39:59,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:59,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 15:39:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:59,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:59,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:59,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:59,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 15:39:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:59,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 15:39:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:59,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:59,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-21 15:39:59,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:59,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:39:59,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:59,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-21 15:39:59,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:59,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:59,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:59,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:39:59,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:59,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:39:59,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:59,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:39:59,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:59,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-08-21 15:39:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:59,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-21 15:39:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:39:59,306 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 83 proven. 29 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2020-08-21 15:39:59,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409126801] [2020-08-21 15:39:59,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:39:59,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 15:39:59,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41091062] [2020-08-21 15:39:59,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 15:39:59,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:39:59,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 15:39:59,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-21 15:39:59,309 INFO L87 Difference]: Start difference. First operand 850 states and 986 transitions. Second operand 15 states. [2020-08-21 15:40:00,693 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:40:00,945 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:40:01,181 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:40:01,418 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:40:03,027 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:40:03,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:40:03,841 INFO L93 Difference]: Finished difference Result 2242 states and 2707 transitions. [2020-08-21 15:40:03,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-21 15:40:03,842 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 277 [2020-08-21 15:40:03,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:40:03,850 INFO L225 Difference]: With dead ends: 2242 [2020-08-21 15:40:03,851 INFO L226 Difference]: Without dead ends: 1325 [2020-08-21 15:40:03,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 96 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-21 15:40:03,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2020-08-21 15:40:04,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1123. [2020-08-21 15:40:04,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-08-21 15:40:04,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1332 transitions. [2020-08-21 15:40:04,059 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1332 transitions. Word has length 277 [2020-08-21 15:40:04,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:40:04,060 INFO L479 AbstractCegarLoop]: Abstraction has 1123 states and 1332 transitions. [2020-08-21 15:40:04,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 15:40:04,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1332 transitions. [2020-08-21 15:40:04,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-08-21 15:40:04,066 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:40:04,066 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:40:04,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 15:40:04,067 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:40:04,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:40:04,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1975666707, now seen corresponding path program 1 times [2020-08-21 15:40:04,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:40:04,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470434488] [2020-08-21 15:40:04,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:40:04,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,360 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:40:04,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:04,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:40:04,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:40:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:40:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:40:04,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:40:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:40:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 15:40:04,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:04,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 15:40:04,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:04,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:40:04,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:40:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:40:04,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:40:04,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 15:40:04,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:04,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:40:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 15:40:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:04,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:40:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 15:40:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:04,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 15:40:04,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:40:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 15:40:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-21 15:40:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:40:04,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 15:40:04,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:04,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:40:04,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 15:40:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 15:40:04,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:40:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-21 15:40:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:04,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-08-21 15:40:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:04,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:04,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:40:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:40:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-21 15:40:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-21 15:40:04,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:04,773 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 90 proven. 36 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-08-21 15:40:04,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470434488] [2020-08-21 15:40:04,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:40:04,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 15:40:04,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199680517] [2020-08-21 15:40:04,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 15:40:04,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:40:04,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 15:40:04,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-21 15:40:04,778 INFO L87 Difference]: Start difference. First operand 1123 states and 1332 transitions. Second operand 16 states. [2020-08-21 15:40:05,557 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:40:05,880 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:40:06,168 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:40:06,407 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 15:40:07,088 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:40:07,852 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:40:08,224 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:40:08,494 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:40:09,142 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:40:09,927 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:40:10,166 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:40:10,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:40:10,678 INFO L93 Difference]: Finished difference Result 2127 states and 2561 transitions. [2020-08-21 15:40:10,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 15:40:10,679 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 283 [2020-08-21 15:40:10,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:40:10,689 INFO L225 Difference]: With dead ends: 2127 [2020-08-21 15:40:10,689 INFO L226 Difference]: Without dead ends: 1125 [2020-08-21 15:40:10,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-21 15:40:10,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-08-21 15:40:11,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1075. [2020-08-21 15:40:11,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1075 states. [2020-08-21 15:40:11,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1258 transitions. [2020-08-21 15:40:11,021 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1258 transitions. Word has length 283 [2020-08-21 15:40:11,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:40:11,022 INFO L479 AbstractCegarLoop]: Abstraction has 1075 states and 1258 transitions. [2020-08-21 15:40:11,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 15:40:11,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1258 transitions. [2020-08-21 15:40:11,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-08-21 15:40:11,036 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:40:11,036 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:40:11,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 15:40:11,037 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:40:11,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:40:11,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1186071979, now seen corresponding path program 1 times [2020-08-21 15:40:11,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:40:11,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660520213] [2020-08-21 15:40:11,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:40:11,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,406 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:40:11,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:40:11,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:40:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:40:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:40:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:40:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:40:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 15:40:11,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 15:40:11,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:11,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:40:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:40:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:40:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:40:11,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 15:40:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:11,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:40:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 15:40:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:11,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:40:11,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 15:40:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 15:40:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:40:11,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 15:40:11,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-21 15:40:11,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:11,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:11,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:40:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 15:40:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:40:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 15:40:11,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 15:40:11,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:40:11,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-21 15:40:11,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:40:11,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-21 15:40:11,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:11,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:40:11,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:40:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:40:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-08-21 15:40:11,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-08-21 15:40:11,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:40:11,703 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2020-08-21 15:40:11,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660520213] [2020-08-21 15:40:11,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:40:11,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 15:40:11,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955624871] [2020-08-21 15:40:11,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 15:40:11,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:40:11,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 15:40:11,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-21 15:40:11,706 INFO L87 Difference]: Start difference. First operand 1075 states and 1258 transitions. Second operand 11 states.