/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 03:27:44,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 03:27:44,189 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 03:27:44,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 03:27:44,226 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 03:27:44,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 03:27:44,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 03:27:44,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 03:27:44,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 03:27:44,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 03:27:44,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 03:27:44,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 03:27:44,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 03:27:44,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 03:27:44,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 03:27:44,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 03:27:44,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 03:27:44,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 03:27:44,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 03:27:44,265 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 03:27:44,267 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 03:27:44,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 03:27:44,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 03:27:44,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 03:27:44,281 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 03:27:44,281 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 03:27:44,281 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 03:27:44,282 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 03:27:44,282 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 03:27:44,283 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 03:27:44,283 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 03:27:44,283 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 03:27:44,284 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 03:27:44,285 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 03:27:44,286 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 03:27:44,286 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 03:27:44,286 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 03:27:44,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 03:27:44,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 03:27:44,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 03:27:44,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 03:27:44,289 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 [2020-08-19 03:27:44,315 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 03:27:44,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 03:27:44,316 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 03:27:44,316 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 03:27:44,316 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 03:27:44,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 03:27:44,317 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 03:27:44,317 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 03:27:44,317 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 03:27:44,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 03:27:44,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 03:27:44,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 03:27:44,318 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 03:27:44,318 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 03:27:44,318 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 03:27:44,319 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 03:27:44,319 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 03:27:44,319 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 03:27:44,319 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 03:27:44,319 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 03:27:44,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 03:27:44,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:27:44,320 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 03:27:44,320 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 03:27:44,321 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 03:27:44,321 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 03:27:44,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 03:27:44,321 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 03:27:44,321 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 03:27:44,321 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=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; [2020-08-19 03:27:44,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 03:27:44,650 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 03:27:44,656 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 03:27:44,660 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 03:27:44,660 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 03:27:44,661 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c [2020-08-19 03:27:44,734 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae6d94b57/c513a223ee034c77a2b712ccf4850e4e/FLAG8ef480f67 [2020-08-19 03:27:45,271 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 03:27:45,274 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c [2020-08-19 03:27:45,287 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae6d94b57/c513a223ee034c77a2b712ccf4850e4e/FLAG8ef480f67 [2020-08-19 03:27:45,544 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae6d94b57/c513a223ee034c77a2b712ccf4850e4e [2020-08-19 03:27:45,552 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 03:27:45,554 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 03:27:45,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 03:27:45,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 03:27:45,558 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 03:27:45,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:27:45" (1/1) ... [2020-08-19 03:27:45,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11a529ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:27:45, skipping insertion in model container [2020-08-19 03:27:45,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:27:45" (1/1) ... [2020-08-19 03:27:45,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 03:27:45,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 03:27:46,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:27:46,024 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 03:27:46,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:27:46,288 INFO L208 MainTranslator]: Completed translation [2020-08-19 03:27:46,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:27:46 WrapperNode [2020-08-19 03:27:46,288 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 03:27:46,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 03:27:46,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 03:27:46,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 03:27:46,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:27:46" (1/1) ... [2020-08-19 03:27:46,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:27:46" (1/1) ... [2020-08-19 03:27:46,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:27:46" (1/1) ... [2020-08-19 03:27:46,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:27:46" (1/1) ... [2020-08-19 03:27:46,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:27:46" (1/1) ... [2020-08-19 03:27:46,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:27:46" (1/1) ... [2020-08-19 03:27:46,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:27:46" (1/1) ... [2020-08-19 03:27:46,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 03:27:46,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 03:27:46,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 03:27:46,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 03:27:46,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:27:46" (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 [2020-08-19 03:27:46,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 03:27:46,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 03:27:46,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 03:27:46,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 03:27:46,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 03:27:46,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 03:27:46,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 03:27:46,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 03:27:46,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 03:27:46,464 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 03:27:46,465 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 03:27:46,465 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 03:27:46,465 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 03:27:46,465 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 03:27:46,465 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 03:27:46,465 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 03:27:46,466 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 03:27:46,466 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 03:27:46,466 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-19 03:27:46,466 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 03:27:46,466 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 03:27:46,466 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 03:27:46,467 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 03:27:46,467 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 03:27:46,467 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 03:27:46,467 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 03:27:46,467 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 03:27:46,467 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 03:27:46,468 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 03:27:46,468 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 03:27:46,468 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 03:27:46,468 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 03:27:46,468 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 03:27:46,469 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 03:27:46,469 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 03:27:46,469 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 03:27:46,469 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 03:27:46,469 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 03:27:46,470 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 03:27:46,470 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 03:27:46,470 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 03:27:46,470 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 03:27:46,470 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 03:27:46,470 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 03:27:46,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 03:27:46,471 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 03:27:46,471 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 03:27:46,471 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 03:27:46,471 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 03:27:46,471 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 03:27:46,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 03:27:46,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 03:27:46,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 03:27:46,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 03:27:46,472 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 03:27:46,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 03:27:46,473 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 03:27:46,473 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 03:27:46,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 03:27:46,473 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 03:27:46,473 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 03:27:46,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 03:27:46,474 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 03:27:46,474 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 03:27:46,474 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 03:27:46,474 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 03:27:46,474 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 03:27:46,474 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 03:27:46,474 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 03:27:46,475 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 03:27:46,475 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 03:27:46,475 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 03:27:46,475 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 03:27:46,475 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 03:27:46,475 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 03:27:46,475 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 03:27:46,476 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 03:27:46,476 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 03:27:46,476 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 03:27:46,476 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 03:27:46,476 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-19 03:27:46,476 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 03:27:46,477 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 03:27:46,477 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 03:27:46,477 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 03:27:46,477 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 03:27:46,477 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 03:27:46,477 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 03:27:46,478 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 03:27:46,478 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 03:27:46,478 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 03:27:46,478 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 03:27:46,478 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 03:27:46,478 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 03:27:46,478 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 03:27:46,479 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 03:27:46,479 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 03:27:46,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 03:27:46,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 03:27:46,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 03:27:47,676 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 03:27:47,676 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 03:27:47,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:27:47 BoogieIcfgContainer [2020-08-19 03:27:47,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 03:27:47,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 03:27:47,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 03:27:47,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 03:27:47,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 03:27:45" (1/3) ... [2020-08-19 03:27:47,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a58633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:27:47, skipping insertion in model container [2020-08-19 03:27:47,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:27:46" (2/3) ... [2020-08-19 03:27:47,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a58633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:27:47, skipping insertion in model container [2020-08-19 03:27:47,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:27:47" (3/3) ... [2020-08-19 03:27:47,696 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product63.cil.c [2020-08-19 03:27:47,706 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 03:27:47,716 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 03:27:47,730 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 03:27:47,766 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 03:27:47,767 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 03:27:47,767 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 03:27:47,768 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 03:27:47,768 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 03:27:47,768 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 03:27:47,768 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 03:27:47,769 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 03:27:47,801 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states. [2020-08-19 03:27:47,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 03:27:47,815 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:27:47,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:27:47,817 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:27:47,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:27:47,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1593418819, now seen corresponding path program 1 times [2020-08-19 03:27:47,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:27:47,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718110624] [2020-08-19 03:27:47,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:27:48,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:48,551 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:27:48,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:27:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:48,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:27:48,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:48,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:27:48,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:48,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:27:48,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:48,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:27:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:48,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 03:27:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:48,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 03:27:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:48,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:27:48,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718110624] [2020-08-19 03:27:48,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:27:48,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 03:27:48,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707212726] [2020-08-19 03:27:48,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 03:27:48,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:27:48,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 03:27:48,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:27:48,701 INFO L87 Difference]: Start difference. First operand 202 states. Second operand 3 states. [2020-08-19 03:27:50,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:27:50,083 INFO L93 Difference]: Finished difference Result 365 states and 474 transitions. [2020-08-19 03:27:50,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 03:27:50,086 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 03:27:50,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:27:50,101 INFO L225 Difference]: With dead ends: 365 [2020-08-19 03:27:50,101 INFO L226 Difference]: Without dead ends: 197 [2020-08-19 03:27:50,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:27:50,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-08-19 03:27:50,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 159. [2020-08-19 03:27:50,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-08-19 03:27:50,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 189 transitions. [2020-08-19 03:27:50,239 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 189 transitions. Word has length 46 [2020-08-19 03:27:50,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:27:50,239 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 189 transitions. [2020-08-19 03:27:50,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 03:27:50,240 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 189 transitions. [2020-08-19 03:27:50,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 03:27:50,245 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:27:50,245 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:27:50,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 03:27:50,246 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:27:50,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:27:50,246 INFO L82 PathProgramCache]: Analyzing trace with hash 261795935, now seen corresponding path program 1 times [2020-08-19 03:27:50,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:27:50,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861001490] [2020-08-19 03:27:50,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:27:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:50,583 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:27:50,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:27:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:50,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:27:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:50,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:27:50,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:50,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:27:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:50,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:27:50,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:50,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 03:27:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:50,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 03:27:50,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:50,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:27:50,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861001490] [2020-08-19 03:27:50,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:27:50,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 03:27:50,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265469882] [2020-08-19 03:27:50,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 03:27:50,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:27:50,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 03:27:50,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:27:50,633 INFO L87 Difference]: Start difference. First operand 159 states and 189 transitions. Second operand 4 states. [2020-08-19 03:27:51,150 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:52,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:27:52,224 INFO L93 Difference]: Finished difference Result 292 states and 357 transitions. [2020-08-19 03:27:52,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:27:52,225 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 03:27:52,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:27:52,231 INFO L225 Difference]: With dead ends: 292 [2020-08-19 03:27:52,231 INFO L226 Difference]: Without dead ends: 181 [2020-08-19 03:27:52,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:27:52,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-08-19 03:27:52,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 150. [2020-08-19 03:27:52,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-08-19 03:27:52,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 177 transitions. [2020-08-19 03:27:52,313 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 177 transitions. Word has length 47 [2020-08-19 03:27:52,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:27:52,314 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 177 transitions. [2020-08-19 03:27:52,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 03:27:52,315 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 177 transitions. [2020-08-19 03:27:52,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 03:27:52,327 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:27:52,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:27:52,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 03:27:52,328 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:27:52,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:27:52,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1299589925, now seen corresponding path program 1 times [2020-08-19 03:27:52,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:27:52,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000049438] [2020-08-19 03:27:52,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:27:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:52,664 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:27:52,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:27:52,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:52,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:27:52,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:52,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:27:52,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:52,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:27:52,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:52,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:27:52,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:52,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 03:27:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:52,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 03:27:52,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:52,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:27:52,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000049438] [2020-08-19 03:27:52,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:27:52,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 03:27:52,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953248007] [2020-08-19 03:27:52,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 03:27:52,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:27:52,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 03:27:52,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 03:27:52,784 INFO L87 Difference]: Start difference. First operand 150 states and 177 transitions. Second operand 8 states. [2020-08-19 03:27:53,160 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:27:53,469 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:53,710 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:53,978 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:54,655 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:56,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:27:56,921 INFO L93 Difference]: Finished difference Result 510 states and 633 transitions. [2020-08-19 03:27:56,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 03:27:56,922 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-19 03:27:56,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:27:56,928 INFO L225 Difference]: With dead ends: 510 [2020-08-19 03:27:56,928 INFO L226 Difference]: Without dead ends: 384 [2020-08-19 03:27:56,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-19 03:27:56,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2020-08-19 03:27:57,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 318. [2020-08-19 03:27:57,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2020-08-19 03:27:57,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 386 transitions. [2020-08-19 03:27:57,015 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 386 transitions. Word has length 51 [2020-08-19 03:27:57,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:27:57,016 INFO L479 AbstractCegarLoop]: Abstraction has 318 states and 386 transitions. [2020-08-19 03:27:57,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 03:27:57,016 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 386 transitions. [2020-08-19 03:27:57,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 03:27:57,017 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:27:57,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:27:57,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 03:27:57,018 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:27:57,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:27:57,018 INFO L82 PathProgramCache]: Analyzing trace with hash -848411279, now seen corresponding path program 1 times [2020-08-19 03:27:57,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:27:57,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835455553] [2020-08-19 03:27:57,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:27:57,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:57,324 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:27:57,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:27:57,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:57,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:27:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:57,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:27:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:57,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:27:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:57,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:27:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:57,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 03:27:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:57,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 03:27:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:57,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 03:27:57,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:27:57,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:27:57,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835455553] [2020-08-19 03:27:57,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:27:57,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 03:27:57,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462972723] [2020-08-19 03:27:57,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 03:27:57,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:27:57,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 03:27:57,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 03:27:57,467 INFO L87 Difference]: Start difference. First operand 318 states and 386 transitions. Second operand 12 states. [2020-08-19 03:27:57,877 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:27:58,171 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:58,420 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:58,653 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:27:59,174 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:27:59,984 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:28:00,377 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:28:00,742 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:28:01,001 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:28:01,299 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:28:01,697 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:28:02,120 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:28:02,581 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:28:04,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:28:04,924 INFO L93 Difference]: Finished difference Result 1305 states and 1782 transitions. [2020-08-19 03:28:04,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 03:28:04,924 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-19 03:28:04,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:28:04,933 INFO L225 Difference]: With dead ends: 1305 [2020-08-19 03:28:04,933 INFO L226 Difference]: Without dead ends: 1011 [2020-08-19 03:28:04,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-19 03:28:04,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-08-19 03:28:05,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 910. [2020-08-19 03:28:05,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 910 states. [2020-08-19 03:28:05,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1164 transitions. [2020-08-19 03:28:05,187 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1164 transitions. Word has length 57 [2020-08-19 03:28:05,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:28:05,188 INFO L479 AbstractCegarLoop]: Abstraction has 910 states and 1164 transitions. [2020-08-19 03:28:05,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 03:28:05,189 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1164 transitions. [2020-08-19 03:28:05,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-19 03:28:05,194 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:28:05,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:28:05,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 03:28:05,195 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:28:05,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:28:05,195 INFO L82 PathProgramCache]: Analyzing trace with hash -533846889, now seen corresponding path program 1 times [2020-08-19 03:28:05,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:28:05,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398056435] [2020-08-19 03:28:05,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:28:05,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:05,562 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:28:05,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:28:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:05,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:28:05,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:05,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:28:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:05,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:28:05,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:05,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:28:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:05,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 03:28:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:05,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 03:28:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:05,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 03:28:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:05,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 03:28:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:05,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:28:05,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398056435] [2020-08-19 03:28:05,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:28:05,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 03:28:05,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803496199] [2020-08-19 03:28:05,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 03:28:05,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:28:05,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 03:28:05,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 03:28:05,645 INFO L87 Difference]: Start difference. First operand 910 states and 1164 transitions. Second operand 6 states. [2020-08-19 03:28:05,927 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:28:08,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:28:08,103 INFO L93 Difference]: Finished difference Result 2165 states and 2945 transitions. [2020-08-19 03:28:08,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 03:28:08,104 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-19 03:28:08,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:28:08,114 INFO L225 Difference]: With dead ends: 2165 [2020-08-19 03:28:08,114 INFO L226 Difference]: Without dead ends: 1279 [2020-08-19 03:28:08,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-19 03:28:08,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2020-08-19 03:28:08,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1192. [2020-08-19 03:28:08,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1192 states. [2020-08-19 03:28:08,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1486 transitions. [2020-08-19 03:28:08,439 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1486 transitions. Word has length 61 [2020-08-19 03:28:08,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:28:08,440 INFO L479 AbstractCegarLoop]: Abstraction has 1192 states and 1486 transitions. [2020-08-19 03:28:08,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 03:28:08,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1486 transitions. [2020-08-19 03:28:08,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 03:28:08,443 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:28:08,443 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:28:08,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 03:28:08,444 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:28:08,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:28:08,444 INFO L82 PathProgramCache]: Analyzing trace with hash 2051159117, now seen corresponding path program 1 times [2020-08-19 03:28:08,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:28:08,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828399783] [2020-08-19 03:28:08,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:28:08,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:08,717 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:28:08,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:28:08,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:08,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:28:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:08,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:28:08,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:08,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:28:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:08,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:28:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:08,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 03:28:08,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:08,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 03:28:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:08,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 03:28:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:08,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:28:08,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:08,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:28:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:08,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 03:28:08,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:08,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 03:28:08,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:08,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 03:28:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:08,891 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 03:28:08,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828399783] [2020-08-19 03:28:08,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:28:08,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 03:28:08,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777973701] [2020-08-19 03:28:08,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 03:28:08,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:28:08,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 03:28:08,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-19 03:28:08,894 INFO L87 Difference]: Start difference. First operand 1192 states and 1486 transitions. Second operand 10 states. [2020-08-19 03:28:09,461 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-19 03:28:10,013 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:28:12,320 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:28:14,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:28:14,841 INFO L93 Difference]: Finished difference Result 2279 states and 2961 transitions. [2020-08-19 03:28:14,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 03:28:14,842 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-19 03:28:14,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:28:14,852 INFO L225 Difference]: With dead ends: 2279 [2020-08-19 03:28:14,853 INFO L226 Difference]: Without dead ends: 1402 [2020-08-19 03:28:14,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-19 03:28:14,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2020-08-19 03:28:15,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 1305. [2020-08-19 03:28:15,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1305 states. [2020-08-19 03:28:15,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 1607 transitions. [2020-08-19 03:28:15,095 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 1607 transitions. Word has length 88 [2020-08-19 03:28:15,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:28:15,097 INFO L479 AbstractCegarLoop]: Abstraction has 1305 states and 1607 transitions. [2020-08-19 03:28:15,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 03:28:15,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 1607 transitions. [2020-08-19 03:28:15,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-19 03:28:15,102 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:28:15,103 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:28:15,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 03:28:15,103 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:28:15,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:28:15,104 INFO L82 PathProgramCache]: Analyzing trace with hash -923959180, now seen corresponding path program 1 times [2020-08-19 03:28:15,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:28:15,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213759778] [2020-08-19 03:28:15,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:28:15,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:15,495 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:28:15,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:28:15,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:15,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:28:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:15,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:28:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:15,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:28:15,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:15,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:28:15,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:15,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 03:28:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:15,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 03:28:15,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:15,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:28:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:15,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:28:15,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:15,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:28:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:15,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:28:15,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:15,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:28:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:15,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:28:15,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:15,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:28:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:15,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:28:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:15,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:28:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:15,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 03:28:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:15,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:28:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:15,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 03:28:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:15,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 03:28:15,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:15,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:28:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:15,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:28:15,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:15,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 03:28:15,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:15,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-19 03:28:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:15,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-19 03:28:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:15,710 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-19 03:28:15,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213759778] [2020-08-19 03:28:15,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:28:15,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-19 03:28:15,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056732741] [2020-08-19 03:28:15,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 03:28:15,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:28:15,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 03:28:15,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-19 03:28:15,713 INFO L87 Difference]: Start difference. First operand 1305 states and 1607 transitions. Second operand 9 states. [2020-08-19 03:28:16,632 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:28:16,864 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:28:17,139 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:28:18,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:28:18,464 INFO L93 Difference]: Finished difference Result 2395 states and 3094 transitions. [2020-08-19 03:28:18,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 03:28:18,466 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 150 [2020-08-19 03:28:18,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:28:18,476 INFO L225 Difference]: With dead ends: 2395 [2020-08-19 03:28:18,476 INFO L226 Difference]: Without dead ends: 1428 [2020-08-19 03:28:18,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-19 03:28:18,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2020-08-19 03:28:18,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1305. [2020-08-19 03:28:18,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1305 states. [2020-08-19 03:28:18,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 1605 transitions. [2020-08-19 03:28:18,779 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 1605 transitions. Word has length 150 [2020-08-19 03:28:18,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:28:18,780 INFO L479 AbstractCegarLoop]: Abstraction has 1305 states and 1605 transitions. [2020-08-19 03:28:18,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 03:28:18,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 1605 transitions. [2020-08-19 03:28:18,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-19 03:28:18,784 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:28:18,784 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:28:18,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 03:28:18,785 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:28:18,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:28:18,785 INFO L82 PathProgramCache]: Analyzing trace with hash 2121665403, now seen corresponding path program 1 times [2020-08-19 03:28:18,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:28:18,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468006656] [2020-08-19 03:28:18,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:28:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:19,049 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:28:19,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:28:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:19,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:28:19,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:19,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:28:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:19,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:28:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:19,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:28:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:19,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 03:28:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:19,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:28:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:19,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:28:19,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:19,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:28:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:19,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:28:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:19,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:28:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:19,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:28:19,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:19,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:28:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:19,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:28:19,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:19,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:28:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:19,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 03:28:19,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:19,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:28:19,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:19,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 03:28:19,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:19,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-19 03:28:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:19,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:28:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:19,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:28:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:19,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 03:28:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:19,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-19 03:28:19,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:19,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-19 03:28:19,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:19,243 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-19 03:28:19,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468006656] [2020-08-19 03:28:19,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:28:19,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 03:28:19,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049642186] [2020-08-19 03:28:19,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 03:28:19,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:28:19,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 03:28:19,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 03:28:19,246 INFO L87 Difference]: Start difference. First operand 1305 states and 1605 transitions. Second operand 10 states. [2020-08-19 03:28:20,547 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:28:20,804 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:28:21,060 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:28:21,289 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:28:22,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:28:22,583 INFO L93 Difference]: Finished difference Result 2729 states and 3518 transitions. [2020-08-19 03:28:22,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 03:28:22,589 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 146 [2020-08-19 03:28:22,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:28:22,598 INFO L225 Difference]: With dead ends: 2729 [2020-08-19 03:28:22,598 INFO L226 Difference]: Without dead ends: 1448 [2020-08-19 03:28:22,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 03:28:22,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2020-08-19 03:28:22,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 1325. [2020-08-19 03:28:22,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1325 states. [2020-08-19 03:28:22,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 1627 transitions. [2020-08-19 03:28:22,864 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 1627 transitions. Word has length 146 [2020-08-19 03:28:22,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:28:22,865 INFO L479 AbstractCegarLoop]: Abstraction has 1325 states and 1627 transitions. [2020-08-19 03:28:22,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 03:28:22,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 1627 transitions. [2020-08-19 03:28:22,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-19 03:28:22,869 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:28:22,869 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:28:22,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 03:28:22,869 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:28:22,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:28:22,870 INFO L82 PathProgramCache]: Analyzing trace with hash 502690489, now seen corresponding path program 1 times [2020-08-19 03:28:22,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:28:22,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555247508] [2020-08-19 03:28:22,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:28:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:23,134 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:28:23,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:28:23,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:23,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:28:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:23,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:28:23,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:23,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:28:23,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:23,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:28:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:23,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 03:28:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:23,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:28:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:23,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:28:23,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:23,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:28:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:23,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:28:23,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:23,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:28:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:23,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:28:23,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:23,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:28:23,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:23,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:28:23,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:23,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:28:23,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:23,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 03:28:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:23,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:28:23,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:23,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 03:28:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:23,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-19 03:28:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:23,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:28:23,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:23,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:28:23,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:23,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 03:28:23,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:23,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-19 03:28:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:23,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-19 03:28:23,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:23,337 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-19 03:28:23,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555247508] [2020-08-19 03:28:23,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:28:23,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 03:28:23,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191900899] [2020-08-19 03:28:23,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 03:28:23,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:28:23,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 03:28:23,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-19 03:28:23,340 INFO L87 Difference]: Start difference. First operand 1325 states and 1627 transitions. Second operand 12 states. [2020-08-19 03:28:23,755 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:28:24,028 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:28:24,269 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:28:25,004 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:28:25,263 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:28:25,507 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:28:26,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:28:26,729 INFO L93 Difference]: Finished difference Result 2441 states and 3101 transitions. [2020-08-19 03:28:26,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 03:28:26,733 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 146 [2020-08-19 03:28:26,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:28:26,742 INFO L225 Difference]: With dead ends: 2441 [2020-08-19 03:28:26,743 INFO L226 Difference]: Without dead ends: 1140 [2020-08-19 03:28:26,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 03:28:26,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2020-08-19 03:28:26,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 1084. [2020-08-19 03:28:26,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1084 states. [2020-08-19 03:28:26,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1312 transitions. [2020-08-19 03:28:26,948 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1312 transitions. Word has length 146 [2020-08-19 03:28:26,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:28:26,948 INFO L479 AbstractCegarLoop]: Abstraction has 1084 states and 1312 transitions. [2020-08-19 03:28:26,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 03:28:26,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1312 transitions. [2020-08-19 03:28:26,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-19 03:28:26,952 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:28:26,952 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:28:26,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 03:28:26,952 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:28:26,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:28:26,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1752033202, now seen corresponding path program 1 times [2020-08-19 03:28:26,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:28:26,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694378425] [2020-08-19 03:28:26,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:28:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:27,258 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:28:27,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:28:27,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:27,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:28:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:27,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:28:27,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:27,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:28:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:27,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:28:27,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:27,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 03:28:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:27,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 03:28:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:27,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:28:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:27,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:28:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:27,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:28:27,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:27,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:28:27,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:27,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:28:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:27,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:28:27,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:27,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:28:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:27,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:28:27,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:27,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:28:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:27,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 03:28:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:27,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:28:27,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:27,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 03:28:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:27,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 03:28:27,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:27,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:28:27,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:27,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:28:27,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:27,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 03:28:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:27,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-19 03:28:27,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:27,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-19 03:28:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:27,660 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-08-19 03:28:27,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694378425] [2020-08-19 03:28:27,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:28:27,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 03:28:27,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050556662] [2020-08-19 03:28:27,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 03:28:27,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:28:27,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 03:28:27,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-19 03:28:27,667 INFO L87 Difference]: Start difference. First operand 1084 states and 1312 transitions. Second operand 15 states. [2020-08-19 03:28:28,138 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:28:28,854 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:28:30,480 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:28:30,802 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:28:31,108 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:28:31,380 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:28:31,671 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:28:31,948 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:28:32,450 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-19 03:28:32,972 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-19 03:28:33,706 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:28:33,957 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:28:34,240 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:28:34,513 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:28:35,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:28:35,499 INFO L93 Difference]: Finished difference Result 3005 states and 3774 transitions. [2020-08-19 03:28:35,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-19 03:28:35,504 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 150 [2020-08-19 03:28:35,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:28:35,515 INFO L225 Difference]: With dead ends: 3005 [2020-08-19 03:28:35,515 INFO L226 Difference]: Without dead ends: 1945 [2020-08-19 03:28:35,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=264, Invalid=1068, Unknown=0, NotChecked=0, Total=1332 [2020-08-19 03:28:35,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1945 states. [2020-08-19 03:28:35,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1945 to 1843. [2020-08-19 03:28:35,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1843 states. [2020-08-19 03:28:35,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2184 transitions. [2020-08-19 03:28:35,809 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2184 transitions. Word has length 150 [2020-08-19 03:28:35,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:28:35,810 INFO L479 AbstractCegarLoop]: Abstraction has 1843 states and 2184 transitions. [2020-08-19 03:28:35,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 03:28:35,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2184 transitions. [2020-08-19 03:28:35,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-19 03:28:35,816 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:28:35,816 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:28:35,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 03:28:35,816 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:28:35,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:28:35,817 INFO L82 PathProgramCache]: Analyzing trace with hash -547203946, now seen corresponding path program 1 times [2020-08-19 03:28:35,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:28:35,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341572771] [2020-08-19 03:28:35,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:28:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:36,164 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:28:36,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:28:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:36,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:28:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:36,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:28:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:36,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:28:36,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:36,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:28:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:36,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 03:28:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:36,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 03:28:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:36,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:28:36,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:36,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:28:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:36,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:28:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:36,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:28:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:36,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:28:36,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:36,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:28:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:36,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:28:36,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:36,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:28:36,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:36,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:28:36,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:36,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 03:28:36,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:36,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:28:36,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:36,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 03:28:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:36,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-19 03:28:36,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:36,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-19 03:28:36,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:36,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:28:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:36,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:28:36,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:36,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 03:28:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:36,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-19 03:28:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:36,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-19 03:28:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:36,366 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-08-19 03:28:36,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341572771] [2020-08-19 03:28:36,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:28:36,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 03:28:36,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546951138] [2020-08-19 03:28:36,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 03:28:36,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:28:36,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 03:28:36,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-19 03:28:36,369 INFO L87 Difference]: Start difference. First operand 1843 states and 2184 transitions. Second operand 11 states. [2020-08-19 03:28:36,828 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:28:38,891 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:28:39,166 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:28:39,436 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:28:39,826 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:28:40,098 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:28:40,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:28:40,516 INFO L93 Difference]: Finished difference Result 2160 states and 2739 transitions. [2020-08-19 03:28:40,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-19 03:28:40,517 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 154 [2020-08-19 03:28:40,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:28:40,529 INFO L225 Difference]: With dead ends: 2160 [2020-08-19 03:28:40,530 INFO L226 Difference]: Without dead ends: 2157 [2020-08-19 03:28:40,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2020-08-19 03:28:40,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2157 states. [2020-08-19 03:28:40,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2157 to 1843. [2020-08-19 03:28:40,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1843 states. [2020-08-19 03:28:40,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2174 transitions. [2020-08-19 03:28:40,810 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2174 transitions. Word has length 154 [2020-08-19 03:28:40,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:28:40,810 INFO L479 AbstractCegarLoop]: Abstraction has 1843 states and 2174 transitions. [2020-08-19 03:28:40,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 03:28:40,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2174 transitions. [2020-08-19 03:28:40,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-08-19 03:28:40,817 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:28:40,817 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:28:40,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 03:28:40,817 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:28:40,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:28:40,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1229554551, now seen corresponding path program 1 times [2020-08-19 03:28:40,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:28:40,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153271472] [2020-08-19 03:28:40,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:28:40,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:41,140 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:28:41,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:28:41,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:41,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:28:41,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:41,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:28:41,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:41,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:28:41,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:41,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:28:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:41,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 03:28:41,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:41,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 03:28:41,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:41,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:28:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:41,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:28:41,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:41,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:28:41,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:41,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:28:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:41,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:28:41,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:41,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:28:41,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:41,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:28:41,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:41,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:28:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:41,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:28:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:41,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 03:28:41,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:41,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:28:41,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:41,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 03:28:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:41,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 03:28:41,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:41,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:28:41,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:41,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:28:41,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:41,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 03:28:41,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:41,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:28:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:41,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:28:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:41,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 03:28:41,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:41,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:28:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:41,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-19 03:28:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:41,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-19 03:28:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:28:41,373 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-19 03:28:41,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153271472] [2020-08-19 03:28:41,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:28:41,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 03:28:41,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617680404] [2020-08-19 03:28:41,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 03:28:41,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:28:41,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 03:28:41,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-19 03:28:41,375 INFO L87 Difference]: Start difference. First operand 1843 states and 2174 transitions. Second operand 12 states.