/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 16:27:36,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 16:27:36,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 16:27:36,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 16:27:36,055 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 16:27:36,056 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 16:27:36,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 16:27:36,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 16:27:36,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 16:27:36,061 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 16:27:36,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 16:27:36,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 16:27:36,064 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 16:27:36,065 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 16:27:36,066 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 16:27:36,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 16:27:36,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 16:27:36,069 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 16:27:36,070 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 16:27:36,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 16:27:36,074 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 16:27:36,075 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 16:27:36,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 16:27:36,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 16:27:36,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 16:27:36,080 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 16:27:36,080 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 16:27:36,081 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 16:27:36,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 16:27:36,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 16:27:36,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 16:27:36,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 16:27:36,084 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 16:27:36,085 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 16:27:36,086 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 16:27:36,086 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 16:27:36,087 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 16:27:36,087 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 16:27:36,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 16:27:36,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 16:27:36,089 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 16:27:36,093 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 16:27:36,141 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 16:27:36,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 16:27:36,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 16:27:36,143 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 16:27:36,144 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 16:27:36,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 16:27:36,144 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 16:27:36,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 16:27:36,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 16:27:36,145 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 16:27:36,145 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 16:27:36,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 16:27:36,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 16:27:36,145 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 16:27:36,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 16:27:36,146 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 16:27:36,146 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 16:27:36,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 16:27:36,146 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 16:27:36,146 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 16:27:36,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 16:27:36,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:27:36,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 16:27:36,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 16:27:36,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 16:27:36,147 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 16:27:36,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 16:27:36,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 16:27:36,150 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 16:27:36,150 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 16:27:36,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 16:27:36,481 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 16:27:36,484 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 16:27:36,486 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 16:27:36,486 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 16:27:36,487 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product55.cil.c [2020-08-21 16:27:36,556 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26e3bf04c/0fc003c188254306b28a39fc34a53aec/FLAG930e81999 [2020-08-21 16:27:37,088 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 16:27:37,092 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product55.cil.c [2020-08-21 16:27:37,118 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26e3bf04c/0fc003c188254306b28a39fc34a53aec/FLAG930e81999 [2020-08-21 16:27:37,375 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26e3bf04c/0fc003c188254306b28a39fc34a53aec [2020-08-21 16:27:37,384 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 16:27:37,386 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 16:27:37,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 16:27:37,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 16:27:37,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 16:27:37,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:27:37" (1/1) ... [2020-08-21 16:27:37,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2260ab44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:27:37, skipping insertion in model container [2020-08-21 16:27:37,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:27:37" (1/1) ... [2020-08-21 16:27:37,403 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 16:27:37,444 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 16:27:37,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:27:37,948 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 16:27:38,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:27:38,083 INFO L208 MainTranslator]: Completed translation [2020-08-21 16:27:38,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:27:38 WrapperNode [2020-08-21 16:27:38,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 16:27:38,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 16:27:38,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 16:27:38,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 16:27:38,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:27:38" (1/1) ... [2020-08-21 16:27:38,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:27:38" (1/1) ... [2020-08-21 16:27:38,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:27:38" (1/1) ... [2020-08-21 16:27:38,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:27:38" (1/1) ... [2020-08-21 16:27:38,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:27:38" (1/1) ... [2020-08-21 16:27:38,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:27:38" (1/1) ... [2020-08-21 16:27:38,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:27:38" (1/1) ... [2020-08-21 16:27:38,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 16:27:38,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 16:27:38,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 16:27:38,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 16:27:38,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:27:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:27:38,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 16:27:38,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 16:27:38,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 16:27:38,275 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 16:27:38,275 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 16:27:38,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 16:27:38,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 16:27:38,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 16:27:38,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 16:27:38,277 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 16:27:38,278 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 16:27:38,278 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 16:27:38,278 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 16:27:38,278 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 16:27:38,278 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 16:27:38,279 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 16:27:38,280 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 16:27:38,280 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 16:27:38,280 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 16:27:38,280 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 16:27:38,280 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 16:27:38,281 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 16:27:38,281 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 16:27:38,281 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 16:27:38,282 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 16:27:38,283 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 16:27:38,283 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 16:27:38,283 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 16:27:38,283 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 16:27:38,284 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 16:27:38,284 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 16:27:38,284 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 16:27:38,284 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 16:27:38,284 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 16:27:38,284 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 16:27:38,284 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 16:27:38,285 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 16:27:38,285 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 16:27:38,285 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 16:27:38,285 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 16:27:38,285 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 16:27:38,286 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-21 16:27:38,286 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-21 16:27:38,286 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-21 16:27:38,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 16:27:38,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 16:27:38,288 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 16:27:38,288 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 16:27:38,288 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 16:27:38,289 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 16:27:38,289 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 16:27:38,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 16:27:38,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 16:27:38,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 16:27:38,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 16:27:38,290 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 16:27:38,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 16:27:38,290 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 16:27:38,291 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 16:27:38,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 16:27:38,291 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 16:27:38,291 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 16:27:38,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 16:27:38,291 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 16:27:38,292 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 16:27:38,292 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 16:27:38,292 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 16:27:38,292 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 16:27:38,292 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 16:27:38,292 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 16:27:38,292 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 16:27:38,293 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-21 16:27:38,293 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 16:27:38,294 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 16:27:38,295 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 16:27:38,295 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 16:27:38,296 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 16:27:38,296 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 16:27:38,296 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 16:27:38,296 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 16:27:38,296 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 16:27:38,297 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 16:27:38,297 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 16:27:38,297 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 16:27:38,297 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 16:27:38,297 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 16:27:38,297 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 16:27:38,298 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 16:27:38,298 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 16:27:38,298 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 16:27:38,298 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-21 16:27:38,298 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-21 16:27:38,298 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 16:27:38,298 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 16:27:38,299 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 16:27:38,299 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 16:27:38,299 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 16:27:38,299 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 16:27:38,299 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 16:27:38,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 16:27:38,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 16:27:38,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 16:27:39,398 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 16:27:39,399 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 16:27:39,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:27:39 BoogieIcfgContainer [2020-08-21 16:27:39,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 16:27:39,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 16:27:39,406 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 16:27:39,409 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 16:27:39,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:27:37" (1/3) ... [2020-08-21 16:27:39,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b3cacc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:27:39, skipping insertion in model container [2020-08-21 16:27:39,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:27:38" (2/3) ... [2020-08-21 16:27:39,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b3cacc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:27:39, skipping insertion in model container [2020-08-21 16:27:39,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:27:39" (3/3) ... [2020-08-21 16:27:39,412 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product55.cil.c [2020-08-21 16:27:39,423 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 16:27:39,431 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 16:27:39,445 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 16:27:39,472 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 16:27:39,472 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 16:27:39,472 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 16:27:39,472 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 16:27:39,473 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 16:27:39,473 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 16:27:39,473 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 16:27:39,473 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 16:27:39,498 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states. [2020-08-21 16:27:39,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 16:27:39,510 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:27:39,512 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:27:39,512 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:27:39,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:27:39,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1039510468, now seen corresponding path program 1 times [2020-08-21 16:27:39,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:27:39,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819730904] [2020-08-21 16:27:39,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:27:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:40,244 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:27:40,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:40,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:27:40,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:40,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:27:40,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:40,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:27:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:40,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:27:40,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:40,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:27:40,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:40,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:27:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:40,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:40,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:40,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 16:27:40,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:40,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 16:27:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:40,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 16:27:40,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819730904] [2020-08-21 16:27:40,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:27:40,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 16:27:40,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141865080] [2020-08-21 16:27:40,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 16:27:40,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:27:40,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 16:27:40,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 16:27:40,406 INFO L87 Difference]: Start difference. First operand 205 states. Second operand 4 states. [2020-08-21 16:27:41,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:27:41,649 INFO L93 Difference]: Finished difference Result 356 states and 457 transitions. [2020-08-21 16:27:41,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 16:27:41,651 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 16:27:41,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:27:41,667 INFO L225 Difference]: With dead ends: 356 [2020-08-21 16:27:41,667 INFO L226 Difference]: Without dead ends: 195 [2020-08-21 16:27:41,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 16:27:41,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-08-21 16:27:41,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 162. [2020-08-21 16:27:41,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-08-21 16:27:41,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 192 transitions. [2020-08-21 16:27:41,798 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 192 transitions. Word has length 59 [2020-08-21 16:27:41,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:27:41,799 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 192 transitions. [2020-08-21 16:27:41,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 16:27:41,799 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 192 transitions. [2020-08-21 16:27:41,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 16:27:41,809 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:27:41,809 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:27:41,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 16:27:41,810 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:27:41,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:27:41,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1700142027, now seen corresponding path program 1 times [2020-08-21 16:27:41,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:27:41,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674884596] [2020-08-21 16:27:41,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:27:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:42,177 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:27:42,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:42,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:42,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:27:42,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:42,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:27:42,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:42,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:27:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:42,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:27:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:42,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:27:42,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:42,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 16:27:42,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:42,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:42,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 16:27:42,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:42,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 16:27:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:42,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 16:27:42,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674884596] [2020-08-21 16:27:42,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:27:42,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:27:42,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25587877] [2020-08-21 16:27:42,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:27:42,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:27:42,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:27:42,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:27:42,236 INFO L87 Difference]: Start difference. First operand 162 states and 192 transitions. Second operand 5 states. [2020-08-21 16:27:42,705 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:27:43,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:27:43,784 INFO L93 Difference]: Finished difference Result 295 states and 361 transitions. [2020-08-21 16:27:43,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 16:27:43,785 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-21 16:27:43,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:27:43,791 INFO L225 Difference]: With dead ends: 295 [2020-08-21 16:27:43,792 INFO L226 Difference]: Without dead ends: 185 [2020-08-21 16:27:43,795 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 16:27:43,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-08-21 16:27:43,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-08-21 16:27:43,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-21 16:27:43,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 180 transitions. [2020-08-21 16:27:43,874 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 180 transitions. Word has length 60 [2020-08-21 16:27:43,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:27:43,875 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 180 transitions. [2020-08-21 16:27:43,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:27:43,875 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 180 transitions. [2020-08-21 16:27:43,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-21 16:27:43,884 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:27:43,884 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] [2020-08-21 16:27:43,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 16:27:43,885 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:27:43,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:27:43,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1740397712, now seen corresponding path program 1 times [2020-08-21 16:27:43,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:27:43,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664750275] [2020-08-21 16:27:43,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:27:43,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:44,249 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:27:44,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:44,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:27:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:44,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:27:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:44,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:27:44,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:44,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:27:44,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:44,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:27:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:44,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:27:44,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:44,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:44,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 16:27:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:44,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 16:27:44,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:44,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 16:27:44,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664750275] [2020-08-21 16:27:44,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:27:44,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 16:27:44,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508014389] [2020-08-21 16:27:44,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 16:27:44,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:27:44,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 16:27:44,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 16:27:44,366 INFO L87 Difference]: Start difference. First operand 153 states and 180 transitions. Second operand 9 states. [2020-08-21 16:27:44,733 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:27:45,023 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:27:45,260 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:27:45,502 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:27:46,372 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:27:48,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:27:48,442 INFO L93 Difference]: Finished difference Result 508 states and 630 transitions. [2020-08-21 16:27:48,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 16:27:48,443 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-21 16:27:48,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:27:48,449 INFO L225 Difference]: With dead ends: 508 [2020-08-21 16:27:48,449 INFO L226 Difference]: Without dead ends: 383 [2020-08-21 16:27:48,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-21 16:27:48,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-08-21 16:27:48,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 326. [2020-08-21 16:27:48,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-08-21 16:27:48,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 396 transitions. [2020-08-21 16:27:48,533 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 396 transitions. Word has length 64 [2020-08-21 16:27:48,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:27:48,534 INFO L479 AbstractCegarLoop]: Abstraction has 326 states and 396 transitions. [2020-08-21 16:27:48,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 16:27:48,534 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 396 transitions. [2020-08-21 16:27:48,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-21 16:27:48,536 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:27:48,536 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:27:48,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 16:27:48,537 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:27:48,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:27:48,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1889366184, now seen corresponding path program 1 times [2020-08-21 16:27:48,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:27:48,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668335101] [2020-08-21 16:27:48,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:27:48,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:48,853 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:27:48,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:48,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:27:48,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:48,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:27:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:48,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:27:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:48,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:27:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:48,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:27:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:48,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:27:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:48,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 16:27:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:48,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:48,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 16:27:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:48,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 16:27:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:48,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 16:27:48,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668335101] [2020-08-21 16:27:48,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:27:48,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 16:27:48,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322944426] [2020-08-21 16:27:48,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 16:27:48,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:27:48,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 16:27:48,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 16:27:48,956 INFO L87 Difference]: Start difference. First operand 326 states and 396 transitions. Second operand 9 states. [2020-08-21 16:27:49,349 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:27:49,964 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:27:50,871 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:27:51,177 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:27:51,467 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:27:51,749 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:27:52,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:27:52,612 INFO L93 Difference]: Finished difference Result 827 states and 1076 transitions. [2020-08-21 16:27:52,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 16:27:52,612 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-21 16:27:52,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:27:52,618 INFO L225 Difference]: With dead ends: 827 [2020-08-21 16:27:52,619 INFO L226 Difference]: Without dead ends: 529 [2020-08-21 16:27:52,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 16:27:52,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-08-21 16:27:52,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 465. [2020-08-21 16:27:52,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2020-08-21 16:27:52,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 561 transitions. [2020-08-21 16:27:52,721 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 561 transitions. Word has length 70 [2020-08-21 16:27:52,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:27:52,722 INFO L479 AbstractCegarLoop]: Abstraction has 465 states and 561 transitions. [2020-08-21 16:27:52,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 16:27:52,722 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 561 transitions. [2020-08-21 16:27:52,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 16:27:52,724 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:27:52,725 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 16:27:52,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 16:27:52,725 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:27:52,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:27:52,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1315837753, now seen corresponding path program 1 times [2020-08-21 16:27:52,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:27:52,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322337804] [2020-08-21 16:27:52,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:27:52,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:53,006 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:27:53,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:53,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:53,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:27:53,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:53,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:27:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:53,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:27:53,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:53,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:27:53,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:53,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:27:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:53,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:27:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:53,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:53,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:53,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 16:27:53,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:53,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:53,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:53,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:53,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:53,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:27:53,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:53,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:27:53,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:53,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 16:27:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:53,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 16:27:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:53,165 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 16:27:53,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322337804] [2020-08-21 16:27:53,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:27:53,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 16:27:53,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082922067] [2020-08-21 16:27:53,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 16:27:53,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:27:53,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 16:27:53,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 16:27:53,167 INFO L87 Difference]: Start difference. First operand 465 states and 561 transitions. Second operand 9 states. [2020-08-21 16:27:54,181 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:27:54,433 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 16:27:54,717 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:27:54,947 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:27:55,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:27:55,858 INFO L93 Difference]: Finished difference Result 988 states and 1255 transitions. [2020-08-21 16:27:55,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 16:27:55,859 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 97 [2020-08-21 16:27:55,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:27:55,864 INFO L225 Difference]: With dead ends: 988 [2020-08-21 16:27:55,864 INFO L226 Difference]: Without dead ends: 551 [2020-08-21 16:27:55,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 16:27:55,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2020-08-21 16:27:55,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 478. [2020-08-21 16:27:55,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-08-21 16:27:55,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 575 transitions. [2020-08-21 16:27:55,957 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 575 transitions. Word has length 97 [2020-08-21 16:27:55,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:27:55,958 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 575 transitions. [2020-08-21 16:27:55,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 16:27:55,958 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 575 transitions. [2020-08-21 16:27:55,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 16:27:55,960 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:27:55,961 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 16:27:55,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 16:27:55,961 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:27:55,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:27:55,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1243451195, now seen corresponding path program 1 times [2020-08-21 16:27:55,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:27:55,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112655191] [2020-08-21 16:27:55,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:27:55,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:56,239 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:27:56,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:56,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:56,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:27:56,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:56,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:27:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:56,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:27:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:56,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:27:56,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:56,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:27:56,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:56,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:27:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:56,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:27:56,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:56,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 16:27:56,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:56,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:56,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:56,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:27:56,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:56,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:27:56,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:56,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:27:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:56,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 16:27:56,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:56,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 16:27:56,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:27:56,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 16:27:56,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112655191] [2020-08-21 16:27:56,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:27:56,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 16:27:56,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525490148] [2020-08-21 16:27:56,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 16:27:56,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:27:56,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 16:27:56,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 16:27:56,492 INFO L87 Difference]: Start difference. First operand 478 states and 575 transitions. Second operand 11 states. [2020-08-21 16:27:57,109 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:27:57,337 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:27:57,552 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:27:58,346 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:27:58,628 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:27:58,894 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:27:59,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:27:59,934 INFO L93 Difference]: Finished difference Result 1015 states and 1308 transitions. [2020-08-21 16:27:59,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 16:27:59,935 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 97 [2020-08-21 16:27:59,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:27:59,940 INFO L225 Difference]: With dead ends: 1015 [2020-08-21 16:27:59,940 INFO L226 Difference]: Without dead ends: 565 [2020-08-21 16:27:59,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 16:27:59,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-08-21 16:28:00,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 486. [2020-08-21 16:28:00,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2020-08-21 16:28:00,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 583 transitions. [2020-08-21 16:28:00,058 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 583 transitions. Word has length 97 [2020-08-21 16:28:00,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:28:00,058 INFO L479 AbstractCegarLoop]: Abstraction has 486 states and 583 transitions. [2020-08-21 16:28:00,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 16:28:00,062 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 583 transitions. [2020-08-21 16:28:00,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 16:28:00,064 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:28:00,065 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 16:28:00,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 16:28:00,065 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:28:00,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:28:00,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1573216956, now seen corresponding path program 1 times [2020-08-21 16:28:00,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:28:00,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371240533] [2020-08-21 16:28:00,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:28:00,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:00,343 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:28:00,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:00,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:28:00,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:00,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:28:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:00,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:28:00,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:00,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:28:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:00,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:28:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:00,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:28:00,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:00,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:00,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:00,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 16:28:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:00,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:00,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:00,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:00,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:00,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:00,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:00,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:28:00,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:00,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 16:28:00,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:00,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 16:28:00,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:00,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 16:28:00,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371240533] [2020-08-21 16:28:00,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:28:00,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 16:28:00,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128852251] [2020-08-21 16:28:00,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 16:28:00,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:28:00,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 16:28:00,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 16:28:00,505 INFO L87 Difference]: Start difference. First operand 486 states and 583 transitions. Second operand 7 states. [2020-08-21 16:28:00,893 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:28:01,411 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:28:03,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:28:03,675 INFO L93 Difference]: Finished difference Result 1503 states and 1948 transitions. [2020-08-21 16:28:03,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 16:28:03,675 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-08-21 16:28:03,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:28:03,681 INFO L225 Difference]: With dead ends: 1503 [2020-08-21 16:28:03,681 INFO L226 Difference]: Without dead ends: 1045 [2020-08-21 16:28:03,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-21 16:28:03,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-08-21 16:28:03,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 971. [2020-08-21 16:28:03,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 971 states. [2020-08-21 16:28:03,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1183 transitions. [2020-08-21 16:28:03,892 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1183 transitions. Word has length 97 [2020-08-21 16:28:03,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:28:03,893 INFO L479 AbstractCegarLoop]: Abstraction has 971 states and 1183 transitions. [2020-08-21 16:28:03,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 16:28:03,893 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1183 transitions. [2020-08-21 16:28:03,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-08-21 16:28:03,898 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:28:03,898 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:28:03,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 16:28:03,899 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:28:03,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:28:03,899 INFO L82 PathProgramCache]: Analyzing trace with hash 164101122, now seen corresponding path program 1 times [2020-08-21 16:28:03,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:28:03,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164209018] [2020-08-21 16:28:03,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:28:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:04,291 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:28:04,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:04,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:28:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:04,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:28:04,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:04,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:28:04,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:04,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:28:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:04,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:28:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:04,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:28:04,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:04,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 16:28:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:04,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:04,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 16:28:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:04,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:04,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:04,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:04,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:04,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:28:04,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:04,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 16:28:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:04,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 16:28:04,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:04,510 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 16:28:04,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164209018] [2020-08-21 16:28:04,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:28:04,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 16:28:04,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514429317] [2020-08-21 16:28:04,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 16:28:04,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:28:04,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 16:28:04,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 16:28:04,513 INFO L87 Difference]: Start difference. First operand 971 states and 1183 transitions. Second operand 12 states. [2020-08-21 16:28:05,084 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:28:05,719 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:28:06,424 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:28:06,737 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:28:06,978 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:28:07,244 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:28:07,514 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:28:09,609 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:28:09,937 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:28:10,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:28:10,695 INFO L93 Difference]: Finished difference Result 2749 states and 3568 transitions. [2020-08-21 16:28:10,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 16:28:10,696 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 101 [2020-08-21 16:28:10,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:28:10,715 INFO L225 Difference]: With dead ends: 2749 [2020-08-21 16:28:10,716 INFO L226 Difference]: Without dead ends: 2004 [2020-08-21 16:28:10,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 16:28:10,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2020-08-21 16:28:11,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 1704. [2020-08-21 16:28:11,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1704 states. [2020-08-21 16:28:11,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 2058 transitions. [2020-08-21 16:28:11,134 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 2058 transitions. Word has length 101 [2020-08-21 16:28:11,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:28:11,138 INFO L479 AbstractCegarLoop]: Abstraction has 1704 states and 2058 transitions. [2020-08-21 16:28:11,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 16:28:11,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 2058 transitions. [2020-08-21 16:28:11,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-08-21 16:28:11,146 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:28:11,147 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:28:11,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 16:28:11,148 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:28:11,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:28:11,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1947078735, now seen corresponding path program 1 times [2020-08-21 16:28:11,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:28:11,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061628380] [2020-08-21 16:28:11,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:28:11,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:11,499 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:28:11,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:11,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:11,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:28:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:11,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:28:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:11,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:28:11,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:11,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:28:11,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:11,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:28:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:11,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:28:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:11,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 16:28:11,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:11,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:11,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:11,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:28:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:11,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:11,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:11,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:11,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:11,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:11,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:11,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:11,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:28:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:11,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 16:28:11,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:11,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:11,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:11,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 16:28:11,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:11,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:11,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:11,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-21 16:28:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:11,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 16:28:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:11,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:11,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:11,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 16:28:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:11,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:11,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:11,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:11,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:11,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:28:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:11,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:11,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-21 16:28:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:11,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-21 16:28:11,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:11,865 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-21 16:28:11,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061628380] [2020-08-21 16:28:11,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:28:11,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 16:28:11,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861666336] [2020-08-21 16:28:11,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 16:28:11,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:28:11,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 16:28:11,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-21 16:28:11,869 INFO L87 Difference]: Start difference. First operand 1704 states and 2058 transitions. Second operand 16 states. [2020-08-21 16:28:12,396 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 16:28:12,709 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 16:28:12,983 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 16:28:13,238 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 16:28:13,897 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-21 16:28:14,147 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:28:14,499 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 16:28:14,948 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 16:28:16,069 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:28:16,604 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:28:17,112 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-21 16:28:17,454 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:28:18,008 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:28:18,406 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:28:18,944 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 16:28:19,335 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 16:28:20,102 WARN L193 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-21 16:28:20,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:28:20,771 INFO L93 Difference]: Finished difference Result 3639 states and 4528 transitions. [2020-08-21 16:28:20,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-08-21 16:28:20,776 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 178 [2020-08-21 16:28:20,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:28:20,790 INFO L225 Difference]: With dead ends: 3639 [2020-08-21 16:28:20,790 INFO L226 Difference]: Without dead ends: 2149 [2020-08-21 16:28:20,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 898 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=682, Invalid=2740, Unknown=0, NotChecked=0, Total=3422 [2020-08-21 16:28:20,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2149 states. [2020-08-21 16:28:21,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2149 to 1971. [2020-08-21 16:28:21,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1971 states. [2020-08-21 16:28:21,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1971 states to 1971 states and 2328 transitions. [2020-08-21 16:28:21,222 INFO L78 Accepts]: Start accepts. Automaton has 1971 states and 2328 transitions. Word has length 178 [2020-08-21 16:28:21,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:28:21,223 INFO L479 AbstractCegarLoop]: Abstraction has 1971 states and 2328 transitions. [2020-08-21 16:28:21,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 16:28:21,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1971 states and 2328 transitions. [2020-08-21 16:28:21,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-08-21 16:28:21,240 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:28:21,241 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:28:21,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 16:28:21,242 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:28:21,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:28:21,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1357647421, now seen corresponding path program 1 times [2020-08-21 16:28:21,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:28:21,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515132441] [2020-08-21 16:28:21,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:28:21,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,521 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:28:21,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:21,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:28:21,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:28:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:28:21,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:28:21,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:28:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:28:21,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 16:28:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:21,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:28:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:21,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:21,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:21,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:28:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 16:28:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 16:28:21,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:28:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 16:28:21,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:21,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:21,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 16:28:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:21,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:21,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:28:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 16:28:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:21,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-21 16:28:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:21,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:28:21,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 16:28:21,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:21,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 16:28:21,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 16:28:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-21 16:28:21,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-21 16:28:21,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:21,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:28:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-08-21 16:28:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:21,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-08-21 16:28:21,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:22,007 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 76 proven. 31 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-08-21 16:28:22,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515132441] [2020-08-21 16:28:22,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:28:22,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 16:28:22,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788299749] [2020-08-21 16:28:22,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 16:28:22,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:28:22,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 16:28:22,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-21 16:28:22,011 INFO L87 Difference]: Start difference. First operand 1971 states and 2328 transitions. Second operand 15 states. [2020-08-21 16:28:23,180 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:28:23,450 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:28:23,703 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:28:23,946 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 16:28:24,189 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:28:25,308 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:28:25,789 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-21 16:28:26,227 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-21 16:28:26,502 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 16:28:29,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:28:29,715 INFO L93 Difference]: Finished difference Result 5414 states and 6621 transitions. [2020-08-21 16:28:29,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 16:28:29,716 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 297 [2020-08-21 16:28:29,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:28:29,735 INFO L225 Difference]: With dead ends: 5414 [2020-08-21 16:28:29,735 INFO L226 Difference]: Without dead ends: 3267 [2020-08-21 16:28:29,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-08-21 16:28:29,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3267 states. [2020-08-21 16:28:30,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3267 to 2803. [2020-08-21 16:28:30,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2803 states. [2020-08-21 16:28:30,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2803 states to 2803 states and 3345 transitions. [2020-08-21 16:28:30,347 INFO L78 Accepts]: Start accepts. Automaton has 2803 states and 3345 transitions. Word has length 297 [2020-08-21 16:28:30,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:28:30,348 INFO L479 AbstractCegarLoop]: Abstraction has 2803 states and 3345 transitions. [2020-08-21 16:28:30,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 16:28:30,348 INFO L276 IsEmpty]: Start isEmpty. Operand 2803 states and 3345 transitions. [2020-08-21 16:28:30,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-08-21 16:28:30,360 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:28:30,360 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, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 16:28:30,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 16:28:30,361 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:28:30,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:28:30,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1075598306, now seen corresponding path program 1 times [2020-08-21 16:28:30,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:28:30,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689004363] [2020-08-21 16:28:30,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:28:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:30,766 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:28:30,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:30,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:30,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:28:30,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:30,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:28:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:30,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:28:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:30,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:28:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:30,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:28:30,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:30,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:28:30,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:30,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 16:28:30,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:30,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:30,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:30,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:30,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:28:30,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:30,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:30,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:30,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:30,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:30,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:30,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:30,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:28:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:30,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 16:28:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:30,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:30,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:30,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 16:28:30,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:30,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:30,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:28:31,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 16:28:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:31,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 16:28:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:31,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 16:28:31,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 16:28:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 16:28:31,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-21 16:28:31,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:31,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:28:31,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 16:28:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:31,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 16:28:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 16:28:31,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-08-21 16:28:31,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-21 16:28:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:28:31,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-08-21 16:28:31,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:31,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 16:28:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:28:31,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:28:31,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-08-21 16:28:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-21 16:28:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:28:31,433 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 86 proven. 42 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2020-08-21 16:28:31,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689004363] [2020-08-21 16:28:31,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:28:31,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 16:28:31,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924677820] [2020-08-21 16:28:31,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 16:28:31,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:28:31,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 16:28:31,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-21 16:28:31,436 INFO L87 Difference]: Start difference. First operand 2803 states and 3345 transitions. Second operand 16 states. [2020-08-21 16:28:31,929 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 16:28:32,267 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:28:32,536 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:28:32,787 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 16:28:33,442 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191