/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER --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_spec2_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 18:46:07,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:46:07,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:46:07,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:46:07,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:46:07,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:46:07,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:46:07,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:46:07,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:46:07,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:46:07,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:46:07,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:46:07,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:46:07,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:46:07,093 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:46:07,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:46:07,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:46:07,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:46:07,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:46:07,100 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:46:07,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:46:07,103 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:46:07,104 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:46:07,105 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:46:07,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:46:07,108 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:46:07,108 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:46:07,109 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:46:07,110 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:46:07,111 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 18:46:07,111 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 18:46:07,112 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 18:46:07,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 18:46:07,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 18:46:07,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 18:46:07,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 18:46:07,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 18:46:07,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 18:46:07,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:46:07,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:46:07,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:46:07,122 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 18:46:07,146 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:46:07,146 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:46:07,147 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:46:07,148 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:46:07,148 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:46:07,148 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:46:07,148 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:46:07,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:46:07,149 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:46:07,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:46:07,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:46:07,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:46:07,150 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:46:07,150 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:46:07,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:46:07,150 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:46:07,150 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:46:07,151 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:46:07,151 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:46:07,151 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:46:07,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:46:07,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:46:07,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:46:07,152 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:46:07,152 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:46:07,153 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:46:07,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:46:07,153 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:46:07,153 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:46:07,153 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-08-21 18:46:07,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:46:07,473 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:46:07,476 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:46:07,478 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:46:07,478 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:46:07,479 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_productSimulator.cil.c [2020-08-21 18:46:07,551 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/295dabb69/46e9bcd42c584d8ea0ec3c4a4592aa07/FLAG51aabdb49 [2020-08-21 18:46:07,996 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:46:07,997 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_productSimulator.cil.c [2020-08-21 18:46:08,010 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/295dabb69/46e9bcd42c584d8ea0ec3c4a4592aa07/FLAG51aabdb49 [2020-08-21 18:46:08,355 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/295dabb69/46e9bcd42c584d8ea0ec3c4a4592aa07 [2020-08-21 18:46:08,365 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:46:08,366 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:46:08,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:46:08,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:46:08,371 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:46:08,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:46:08" (1/1) ... [2020-08-21 18:46:08,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20abf48c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:46:08, skipping insertion in model container [2020-08-21 18:46:08,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:46:08" (1/1) ... [2020-08-21 18:46:08,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:46:08,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:46:08,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:46:08,989 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:46:09,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:46:09,150 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:46:09,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:46:09 WrapperNode [2020-08-21 18:46:09,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:46:09,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:46:09,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:46:09,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:46:09,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:46:09" (1/1) ... [2020-08-21 18:46:09,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:46:09" (1/1) ... [2020-08-21 18:46:09,186 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:46:09" (1/1) ... [2020-08-21 18:46:09,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:46:09" (1/1) ... [2020-08-21 18:46:09,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:46:09" (1/1) ... [2020-08-21 18:46:09,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:46:09" (1/1) ... [2020-08-21 18:46:09,235 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:46:09" (1/1) ... [2020-08-21 18:46:09,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:46:09,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:46:09,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:46:09,244 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:46:09,245 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:46:09" (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 18:46:09,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:46:09,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:46:09,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 18:46:09,317 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 18:46:09,317 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 18:46:09,317 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 18:46:09,318 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 18:46:09,318 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 18:46:09,318 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 18:46:09,318 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 18:46:09,318 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 18:46:09,319 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 18:46:09,319 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__highWaterSensor [2020-08-21 18:46:09,319 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__highWaterSensor [2020-08-21 18:46:09,319 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__lowWaterSensor [2020-08-21 18:46:09,319 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__lowWaterSensor [2020-08-21 18:46:09,320 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__methaneAlarm [2020-08-21 18:46:09,320 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__methaneAlarm [2020-08-21 18:46:09,320 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 18:46:09,320 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__before__methaneQuery [2020-08-21 18:46:09,320 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__role__methaneQuery [2020-08-21 18:46:09,321 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 18:46:09,321 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 18:46:09,321 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 18:46:09,321 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 18:46:09,321 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 18:46:09,322 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 18:46:09,322 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 18:46:09,322 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 18:46:09,322 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 18:46:09,322 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 18:46:09,322 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 18:46:09,323 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 18:46:09,323 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 18:46:09,323 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:46:09,323 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 18:46:09,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-21 18:46:09,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-21 18:46:09,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 18:46:09,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 18:46:09,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 18:46:09,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 18:46:09,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 18:46:09,325 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 18:46:09,325 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 18:46:09,325 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 18:46:09,325 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 18:46:09,325 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 18:46:09,325 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 18:46:09,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:46:09,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 18:46:09,326 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 18:46:09,326 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 18:46:09,326 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 18:46:09,327 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 18:46:09,327 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 18:46:09,327 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 18:46:09,327 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 18:46:09,327 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 18:46:09,328 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 18:46:09,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 18:46:09,328 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 18:46:09,328 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 18:46:09,328 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 18:46:09,328 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 18:46:09,329 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 18:46:09,329 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 18:46:09,329 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 18:46:09,329 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-21 18:46:09,329 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 18:46:09,329 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__highWaterSensor [2020-08-21 18:46:09,330 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 18:46:09,330 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__highWaterSensor [2020-08-21 18:46:09,330 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__lowWaterSensor [2020-08-21 18:46:09,330 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 18:46:09,330 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__lowWaterSensor [2020-08-21 18:46:09,331 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__methaneAlarm [2020-08-21 18:46:09,331 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 18:46:09,331 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__methaneAlarm [2020-08-21 18:46:09,331 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__before__methaneQuery [2020-08-21 18:46:09,331 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__role__methaneQuery [2020-08-21 18:46:09,331 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 18:46:09,331 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 18:46:09,332 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 18:46:09,332 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-21 18:46:09,332 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 18:46:09,332 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 18:46:09,332 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 18:46:09,332 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 18:46:09,333 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 18:46:09,333 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:46:09,333 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 18:46:09,333 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 18:46:09,333 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 18:46:09,333 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 18:46:09,334 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 18:46:09,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 18:46:09,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 18:46:09,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 18:46:09,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 18:46:09,334 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 18:46:09,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 18:46:09,335 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 18:46:09,335 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 18:46:09,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 18:46:09,335 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 18:46:09,335 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 18:46:09,335 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 18:46:09,336 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 18:46:09,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:46:09,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 18:46:09,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:46:10,637 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:46:10,638 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 18:46:10,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:46:10 BoogieIcfgContainer [2020-08-21 18:46:10,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:46:10,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:46:10,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:46:10,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:46:10,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:46:08" (1/3) ... [2020-08-21 18:46:10,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@665ee755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:46:10, skipping insertion in model container [2020-08-21 18:46:10,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:46:09" (2/3) ... [2020-08-21 18:46:10,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@665ee755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:46:10, skipping insertion in model container [2020-08-21 18:46:10,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:46:10" (3/3) ... [2020-08-21 18:46:10,662 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_productSimulator.cil.c [2020-08-21 18:46:10,673 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:46:10,682 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:46:10,694 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:46:10,715 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:46:10,715 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:46:10,715 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:46:10,716 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:46:10,716 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:46:10,716 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:46:10,716 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:46:10,716 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:46:10,740 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states. [2020-08-21 18:46:10,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 18:46:10,754 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:46:10,755 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:46:10,756 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:46:10,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:46:10,762 INFO L82 PathProgramCache]: Analyzing trace with hash 2065144369, now seen corresponding path program 1 times [2020-08-21 18:46:10,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:46:10,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781104882] [2020-08-21 18:46:10,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:46:11,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:11,659 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 18:46:11,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:46:11,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:11,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:46:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:11,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:46:11,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:11,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:46:11,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:11,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:46:11,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:11,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 18:46:11,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:11,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:46:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:11,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 18:46:11,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:11,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 18:46:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:11,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 18:46:11,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:11,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 18:46:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:11,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:46:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:11,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-21 18:46:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:11,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 18:46:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:11,879 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 18:46:11,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1781104882] [2020-08-21 18:46:11,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:46:11,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 18:46:11,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864151709] [2020-08-21 18:46:11,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 18:46:11,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:46:11,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 18:46:11,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-21 18:46:11,908 INFO L87 Difference]: Start difference. First operand 247 states. Second operand 6 states. [2020-08-21 18:46:14,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:46:14,300 INFO L93 Difference]: Finished difference Result 442 states and 585 transitions. [2020-08-21 18:46:14,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 18:46:14,302 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-08-21 18:46:14,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:46:14,320 INFO L225 Difference]: With dead ends: 442 [2020-08-21 18:46:14,320 INFO L226 Difference]: Without dead ends: 256 [2020-08-21 18:46:14,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-08-21 18:46:14,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-08-21 18:46:14,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 204. [2020-08-21 18:46:14,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-08-21 18:46:14,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 251 transitions. [2020-08-21 18:46:14,451 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 251 transitions. Word has length 83 [2020-08-21 18:46:14,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:46:14,452 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 251 transitions. [2020-08-21 18:46:14,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 18:46:14,452 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 251 transitions. [2020-08-21 18:46:14,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 18:46:14,467 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:46:14,467 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:46:14,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:46:14,468 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:46:14,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:46:14,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1458323181, now seen corresponding path program 1 times [2020-08-21 18:46:14,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:46:14,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487615599] [2020-08-21 18:46:14,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:46:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:14,961 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 18:46:14,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:46:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:15,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:46:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:15,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:46:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:15,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:46:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:15,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:46:15,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:15,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 18:46:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:15,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:46:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:15,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 18:46:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:15,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 18:46:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:15,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 18:46:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:15,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 18:46:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:15,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:46:15,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:15,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 18:46:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:15,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 18:46:15,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:15,125 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 18:46:15,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487615599] [2020-08-21 18:46:15,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:46:15,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 18:46:15,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497372072] [2020-08-21 18:46:15,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 18:46:15,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:46:15,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 18:46:15,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-21 18:46:15,129 INFO L87 Difference]: Start difference. First operand 204 states and 251 transitions. Second operand 7 states. [2020-08-21 18:46:15,968 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-08-21 18:46:17,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:46:17,727 INFO L93 Difference]: Finished difference Result 375 states and 480 transitions. [2020-08-21 18:46:17,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 18:46:17,727 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 84 [2020-08-21 18:46:17,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:46:17,733 INFO L225 Difference]: With dead ends: 375 [2020-08-21 18:46:17,733 INFO L226 Difference]: Without dead ends: 246 [2020-08-21 18:46:17,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2020-08-21 18:46:17,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-08-21 18:46:17,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 195. [2020-08-21 18:46:17,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-08-21 18:46:17,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 239 transitions. [2020-08-21 18:46:17,782 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 239 transitions. Word has length 84 [2020-08-21 18:46:17,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:46:17,783 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 239 transitions. [2020-08-21 18:46:17,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 18:46:17,783 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 239 transitions. [2020-08-21 18:46:17,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-21 18:46:17,785 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:46:17,785 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:46:17,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:46:17,786 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:46:17,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:46:17,786 INFO L82 PathProgramCache]: Analyzing trace with hash 481269972, now seen corresponding path program 1 times [2020-08-21 18:46:17,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:46:17,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037216035] [2020-08-21 18:46:17,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:46:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,201 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 18:46:18,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:46:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:46:18,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:46:18,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:46:18,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:46:18,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 18:46:18,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:46:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 18:46:18,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 18:46:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 18:46:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 18:46:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:46:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 18:46:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 18:46:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,408 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 18:46:18,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037216035] [2020-08-21 18:46:18,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:46:18,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-21 18:46:18,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512969664] [2020-08-21 18:46:18,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 18:46:18,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:46:18,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 18:46:18,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-08-21 18:46:18,411 INFO L87 Difference]: Start difference. First operand 195 states and 239 transitions. Second operand 13 states. [2020-08-21 18:46:19,016 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-21 18:46:19,713 WARN L193 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 214 [2020-08-21 18:46:20,563 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 216 [2020-08-21 18:46:21,787 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-21 18:46:22,178 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-08-21 18:46:25,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:46:25,854 INFO L93 Difference]: Finished difference Result 633 states and 818 transitions. [2020-08-21 18:46:25,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-21 18:46:25,854 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 89 [2020-08-21 18:46:25,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:46:25,862 INFO L225 Difference]: With dead ends: 633 [2020-08-21 18:46:25,862 INFO L226 Difference]: Without dead ends: 483 [2020-08-21 18:46:25,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=200, Invalid=612, Unknown=0, NotChecked=0, Total=812 [2020-08-21 18:46:25,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-08-21 18:46:26,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 386. [2020-08-21 18:46:26,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-08-21 18:46:26,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 486 transitions. [2020-08-21 18:46:26,010 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 486 transitions. Word has length 89 [2020-08-21 18:46:26,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:46:26,011 INFO L479 AbstractCegarLoop]: Abstraction has 386 states and 486 transitions. [2020-08-21 18:46:26,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 18:46:26,011 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 486 transitions. [2020-08-21 18:46:26,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-21 18:46:26,014 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:46:26,014 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:46:26,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 18:46:26,014 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:46:26,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:46:26,015 INFO L82 PathProgramCache]: Analyzing trace with hash -678987685, now seen corresponding path program 1 times [2020-08-21 18:46:26,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:46:26,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412317651] [2020-08-21 18:46:26,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:46:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:26,385 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 18:46:26,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:46:26,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:26,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:46:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:26,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:46:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:26,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:46:26,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:26,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:46:26,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:26,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 18:46:26,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:26,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:46:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:26,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 18:46:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:26,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 18:46:26,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:26,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 18:46:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:26,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 18:46:26,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:26,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:46:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:26,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 18:46:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:26,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 18:46:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:26,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 18:46:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:26,575 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 18:46:26,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412317651] [2020-08-21 18:46:26,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:46:26,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 18:46:26,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727824446] [2020-08-21 18:46:26,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 18:46:26,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:46:26,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 18:46:26,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-21 18:46:26,578 INFO L87 Difference]: Start difference. First operand 386 states and 486 transitions. Second operand 11 states. [2020-08-21 18:46:27,260 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-21 18:46:29,005 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-21 18:46:29,507 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-21 18:46:29,767 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-21 18:46:30,176 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-21 18:46:33,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:46:33,249 INFO L93 Difference]: Finished difference Result 1239 states and 1662 transitions. [2020-08-21 18:46:33,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 18:46:33,249 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 95 [2020-08-21 18:46:33,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:46:33,259 INFO L225 Difference]: With dead ends: 1239 [2020-08-21 18:46:33,259 INFO L226 Difference]: Without dead ends: 898 [2020-08-21 18:46:33,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=229, Invalid=583, Unknown=0, NotChecked=0, Total=812 [2020-08-21 18:46:33,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-08-21 18:46:33,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 703. [2020-08-21 18:46:33,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-08-21 18:46:33,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 890 transitions. [2020-08-21 18:46:33,451 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 890 transitions. Word has length 95 [2020-08-21 18:46:33,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:46:33,452 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 890 transitions. [2020-08-21 18:46:33,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 18:46:33,452 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 890 transitions. [2020-08-21 18:46:33,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-21 18:46:33,455 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:46:33,456 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:46:33,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 18:46:33,456 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:46:33,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:46:33,457 INFO L82 PathProgramCache]: Analyzing trace with hash -319049537, now seen corresponding path program 1 times [2020-08-21 18:46:33,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:46:33,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647872097] [2020-08-21 18:46:33,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:46:33,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:33,797 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 18:46:33,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:46:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:33,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:46:33,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:33,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:46:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:33,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:46:33,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:33,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:46:33,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:33,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 18:46:33,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:33,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:46:33,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:33,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 18:46:33,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:33,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 18:46:33,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:33,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 18:46:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:33,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 18:46:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:33,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:46:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:33,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 18:46:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:33,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 18:46:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:33,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 18:46:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:33,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 18:46:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:34,015 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 18:46:34,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647872097] [2020-08-21 18:46:34,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:46:34,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 18:46:34,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635330437] [2020-08-21 18:46:34,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 18:46:34,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:46:34,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 18:46:34,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-21 18:46:34,019 INFO L87 Difference]: Start difference. First operand 703 states and 890 transitions. Second operand 12 states. [2020-08-21 18:46:34,819 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-21 18:46:36,721 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-21 18:46:37,066 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-21 18:46:37,404 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-21 18:46:38,654 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-21 18:46:41,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:46:41,340 INFO L93 Difference]: Finished difference Result 1988 states and 2808 transitions. [2020-08-21 18:46:41,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 18:46:41,341 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 99 [2020-08-21 18:46:41,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:46:41,351 INFO L225 Difference]: With dead ends: 1988 [2020-08-21 18:46:41,351 INFO L226 Difference]: Without dead ends: 1330 [2020-08-21 18:46:41,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=346, Invalid=914, Unknown=0, NotChecked=0, Total=1260 [2020-08-21 18:46:41,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2020-08-21 18:46:41,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1102. [2020-08-21 18:46:41,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-08-21 18:46:41,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1421 transitions. [2020-08-21 18:46:41,634 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1421 transitions. Word has length 99 [2020-08-21 18:46:41,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:46:41,637 INFO L479 AbstractCegarLoop]: Abstraction has 1102 states and 1421 transitions. [2020-08-21 18:46:41,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 18:46:41,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1421 transitions. [2020-08-21 18:46:41,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-21 18:46:41,647 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:46:41,647 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:46:41,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 18:46:41,647 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:46:41,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:46:41,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1144263416, now seen corresponding path program 1 times [2020-08-21 18:46:41,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:46:41,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17411337] [2020-08-21 18:46:41,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:46:41,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:42,055 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 18:46:42,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:46:42,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:42,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:46:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:42,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:46:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:42,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:46:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:42,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:46:42,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:42,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 18:46:42,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:42,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:46:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:42,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 18:46:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:42,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 18:46:42,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:42,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 18:46:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:42,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 18:46:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:42,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:46:42,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:42,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 18:46:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:42,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 18:46:42,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:42,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:46:42,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:42,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:46:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:42,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:46:42,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:42,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:46:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:42,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:46:42,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:42,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:46:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:42,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:46:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:42,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-21 18:46:42,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:42,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-21 18:46:42,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:42,355 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 18:46:42,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17411337] [2020-08-21 18:46:42,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:46:42,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 18:46:42,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303190409] [2020-08-21 18:46:42,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 18:46:42,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:46:42,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 18:46:42,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-21 18:46:42,359 INFO L87 Difference]: Start difference. First operand 1102 states and 1421 transitions. Second operand 12 states. [2020-08-21 18:46:44,656 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-08-21 18:46:44,961 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-08-21 18:46:45,282 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-08-21 18:46:45,645 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-08-21 18:46:47,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:46:47,713 INFO L93 Difference]: Finished difference Result 2481 states and 3557 transitions. [2020-08-21 18:46:47,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 18:46:47,714 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 132 [2020-08-21 18:46:47,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:46:47,726 INFO L225 Difference]: With dead ends: 2481 [2020-08-21 18:46:47,726 INFO L226 Difference]: Without dead ends: 1424 [2020-08-21 18:46:47,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=190, Invalid=460, Unknown=0, NotChecked=0, Total=650 [2020-08-21 18:46:47,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2020-08-21 18:46:47,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1128. [2020-08-21 18:46:47,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1128 states. [2020-08-21 18:46:47,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 1449 transitions. [2020-08-21 18:46:47,987 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 1449 transitions. Word has length 132 [2020-08-21 18:46:47,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:46:47,989 INFO L479 AbstractCegarLoop]: Abstraction has 1128 states and 1449 transitions. [2020-08-21 18:46:47,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 18:46:47,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 1449 transitions. [2020-08-21 18:46:47,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-21 18:46:47,994 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:46:47,995 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:46:47,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 18:46:47,995 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:46:47,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:46:47,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1305336714, now seen corresponding path program 1 times [2020-08-21 18:46:47,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:46:47,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142614119] [2020-08-21 18:46:47,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:46:48,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:48,394 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 18:46:48,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:46:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:48,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:46:48,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:48,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:46:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:48,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:46:48,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:48,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:46:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:48,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 18:46:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:48,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:46:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:48,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 18:46:48,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:48,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 18:46:48,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:48,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 18:46:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:48,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 18:46:48,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:48,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:46:48,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:48,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 18:46:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:48,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 18:46:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:48,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:46:48,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:48,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:46:48,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:48,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:46:48,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:48,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:46:48,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:48,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:46:48,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:48,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:46:48,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:48,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:46:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:48,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-21 18:46:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:48,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-21 18:46:48,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:48,682 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 18:46:48,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142614119] [2020-08-21 18:46:48,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:46:48,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-21 18:46:48,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080451434] [2020-08-21 18:46:48,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 18:46:48,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:46:48,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 18:46:48,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-08-21 18:46:48,692 INFO L87 Difference]: Start difference. First operand 1128 states and 1449 transitions. Second operand 15 states. [2020-08-21 18:46:50,274 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-21 18:46:50,815 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-21 18:46:52,244 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-21 18:46:52,620 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-21 18:46:52,972 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-21 18:46:55,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:46:55,266 INFO L93 Difference]: Finished difference Result 2527 states and 3605 transitions. [2020-08-21 18:46:55,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-21 18:46:55,267 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 132 [2020-08-21 18:46:55,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:46:55,277 INFO L225 Difference]: With dead ends: 2527 [2020-08-21 18:46:55,278 INFO L226 Difference]: Without dead ends: 1444 [2020-08-21 18:46:55,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=236, Invalid=756, Unknown=0, NotChecked=0, Total=992 [2020-08-21 18:46:55,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2020-08-21 18:46:55,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 1144. [2020-08-21 18:46:55,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1144 states. [2020-08-21 18:46:55,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 1465 transitions. [2020-08-21 18:46:55,613 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 1465 transitions. Word has length 132 [2020-08-21 18:46:55,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:46:55,614 INFO L479 AbstractCegarLoop]: Abstraction has 1144 states and 1465 transitions. [2020-08-21 18:46:55,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 18:46:55,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 1465 transitions. [2020-08-21 18:46:55,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-21 18:46:55,620 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:46:55,620 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:46:55,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 18:46:55,620 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:46:55,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:46:55,621 INFO L82 PathProgramCache]: Analyzing trace with hash 856640075, now seen corresponding path program 1 times [2020-08-21 18:46:55,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:46:55,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657076227] [2020-08-21 18:46:55,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:46:55,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:55,962 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 18:46:55,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:46:55,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:56,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:46:56,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:56,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:46:56,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:56,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:46:56,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:56,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:46:56,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:56,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 18:46:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:56,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:46:56,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:56,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 18:46:56,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:56,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 18:46:56,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:56,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 18:46:56,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:56,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 18:46:56,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:56,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:46:56,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:56,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 18:46:56,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:56,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 18:46:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:56,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:46:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:56,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:46:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:56,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:46:56,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:56,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:46:56,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:56,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:46:56,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:56,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:46:56,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:56,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:46:56,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:56,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-21 18:46:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:56,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-21 18:46:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:56,300 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 18:46:56,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657076227] [2020-08-21 18:46:56,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:46:56,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 18:46:56,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579986746] [2020-08-21 18:46:56,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 18:46:56,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:46:56,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 18:46:56,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-21 18:46:56,304 INFO L87 Difference]: Start difference. First operand 1144 states and 1465 transitions. Second operand 10 states. [2020-08-21 18:46:57,019 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-21 18:46:57,997 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-21 18:47:02,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:47:02,780 INFO L93 Difference]: Finished difference Result 3668 states and 5255 transitions. [2020-08-21 18:47:02,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-21 18:47:02,782 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 132 [2020-08-21 18:47:02,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:47:02,803 INFO L225 Difference]: With dead ends: 3668 [2020-08-21 18:47:02,803 INFO L226 Difference]: Without dead ends: 2569 [2020-08-21 18:47:02,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=266, Invalid=726, Unknown=0, NotChecked=0, Total=992 [2020-08-21 18:47:02,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2569 states. [2020-08-21 18:47:03,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2569 to 2160. [2020-08-21 18:47:03,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2160 states. [2020-08-21 18:47:03,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2160 states to 2160 states and 2823 transitions. [2020-08-21 18:47:03,382 INFO L78 Accepts]: Start accepts. Automaton has 2160 states and 2823 transitions. Word has length 132 [2020-08-21 18:47:03,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:47:03,383 INFO L479 AbstractCegarLoop]: Abstraction has 2160 states and 2823 transitions. [2020-08-21 18:47:03,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 18:47:03,383 INFO L276 IsEmpty]: Start isEmpty. Operand 2160 states and 2823 transitions. [2020-08-21 18:47:03,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-21 18:47:03,391 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:47:03,391 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:47:03,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 18:47:03,392 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:47:03,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:47:03,392 INFO L82 PathProgramCache]: Analyzing trace with hash 2033559269, now seen corresponding path program 1 times [2020-08-21 18:47:03,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:47:03,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784094662] [2020-08-21 18:47:03,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:47:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:03,768 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-21 18:47:03,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:47:03,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:03,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:47:03,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:03,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 18:47:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:03,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:47:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:03,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:47:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:03,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 18:47:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:03,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:47:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:03,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 18:47:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:03,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 18:47:03,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:03,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 18:47:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:03,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 18:47:03,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:03,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 18:47:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:03,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 18:47:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:03,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 18:47:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:03,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 18:47:03,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:03,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:47:03,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:03,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:47:03,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:03,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:47:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:03,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:47:03,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:03,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:47:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:03,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:47:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:03,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:47:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:03,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-21 18:47:03,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:03,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-21 18:47:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:47:03,955 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-21 18:47:03,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784094662] [2020-08-21 18:47:03,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:47:03,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 18:47:03,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358563262] [2020-08-21 18:47:03,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 18:47:03,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:47:03,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 18:47:03,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-21 18:47:03,957 INFO L87 Difference]: Start difference. First operand 2160 states and 2823 transitions. Second operand 10 states. [2020-08-21 18:47:04,834 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 213