/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 18:45:37,243 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:45:37,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:45:37,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:45:37,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:45:37,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:45:37,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:45:37,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:45:37,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:45:37,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:45:37,310 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:45:37,314 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:45:37,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:45:37,315 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:45:37,318 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:45:37,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:45:37,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:45:37,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:45:37,325 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:45:37,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:45:37,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:45:37,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:45:37,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:45:37,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:45:37,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:45:37,343 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:45:37,344 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:45:37,348 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:45:37,348 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:45:37,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 18:45:37,350 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 18:45:37,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 18:45:37,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 18:45:37,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 18:45:37,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 18:45:37,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 18:45:37,353 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 18:45:37,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 18:45:37,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:45:37,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:45:37,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:45:37,356 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 18:45:37,378 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:45:37,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:45:37,379 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:45:37,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:45:37,380 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:45:37,380 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:45:37,380 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:45:37,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:45:37,380 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:45:37,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:45:37,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:45:37,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:45:37,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:45:37,381 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:45:37,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:45:37,382 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:45:37,382 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:45:37,382 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:45:37,382 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:45:37,382 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:45:37,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:45:37,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:45:37,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:45:37,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:45:37,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:45:37,384 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:45:37,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:45:37,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:45:37,384 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:45:37,384 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-08-21 18:45:37,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:45:37,681 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:45:37,685 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:45:37,687 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:45:37,687 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:45:37,688 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product53.cil.c [2020-08-21 18:45:37,752 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36ba08ebd/699535c8d83f4bdcb5b2c777118b954e/FLAGb2dc0e071 [2020-08-21 18:45:38,314 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:45:38,315 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product53.cil.c [2020-08-21 18:45:38,331 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36ba08ebd/699535c8d83f4bdcb5b2c777118b954e/FLAGb2dc0e071 [2020-08-21 18:45:38,619 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36ba08ebd/699535c8d83f4bdcb5b2c777118b954e [2020-08-21 18:45:38,629 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:45:38,630 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:45:38,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:45:38,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:45:38,636 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:45:38,637 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:45:38" (1/1) ... [2020-08-21 18:45:38,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a56f015 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:45:38, skipping insertion in model container [2020-08-21 18:45:38,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:45:38" (1/1) ... [2020-08-21 18:45:38,649 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:45:38,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:45:39,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:45:39,171 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:45:39,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:45:39,297 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:45:39,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:45:39 WrapperNode [2020-08-21 18:45:39,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:45:39,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:45:39,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:45:39,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:45:39,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:45:39" (1/1) ... [2020-08-21 18:45:39,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:45:39" (1/1) ... [2020-08-21 18:45:39,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:45:39" (1/1) ... [2020-08-21 18:45:39,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:45:39" (1/1) ... [2020-08-21 18:45:39,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:45:39" (1/1) ... [2020-08-21 18:45:39,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:45:39" (1/1) ... [2020-08-21 18:45:39,389 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:45:39" (1/1) ... [2020-08-21 18:45:39,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:45:39,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:45:39,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:45:39,398 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:45:39,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:45:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:45:39,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:45:39,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:45:39,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 18:45:39,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 18:45:39,470 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 18:45:39,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 18:45:39,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 18:45:39,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 18:45:39,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 18:45:39,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 18:45:39,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 18:45:39,471 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 18:45:39,471 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 18:45:39,472 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 18:45:39,472 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 18:45:39,472 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 18:45:39,472 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 18:45:39,472 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 18:45:39,473 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 18:45:39,473 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 18:45:39,473 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 18:45:39,473 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 18:45:39,473 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 18:45:39,473 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-21 18:45:39,474 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-21 18:45:39,474 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 18:45:39,474 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 18:45:39,474 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 18:45:39,474 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 18:45:39,474 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:45:39,475 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 18:45:39,475 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 18:45:39,475 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 18:45:39,475 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 18:45:39,475 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 18:45:39,475 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 18:45:39,476 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 18:45:39,476 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 18:45:39,476 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 18:45:39,476 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 18:45:39,476 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 18:45:39,476 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 18:45:39,477 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:45:39,477 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 18:45:39,477 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 18:45:39,477 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 18:45:39,477 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 18:45:39,477 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 18:45:39,477 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 18:45:39,478 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 18:45:39,478 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 18:45:39,478 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 18:45:39,478 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 18:45:39,478 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 18:45:39,478 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 18:45:39,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 18:45:39,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 18:45:39,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 18:45:39,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 18:45:39,479 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 18:45:39,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 18:45:39,480 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 18:45:39,480 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 18:45:39,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 18:45:39,480 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 18:45:39,480 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 18:45:39,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 18:45:39,481 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 18:45:39,481 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 18:45:39,481 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 18:45:39,481 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 18:45:39,481 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 18:45:39,481 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 18:45:39,481 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 18:45:39,482 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 18:45:39,482 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 18:45:39,482 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 18:45:39,482 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-21 18:45:39,482 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 18:45:39,482 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 18:45:39,483 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 18:45:39,483 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 18:45:39,483 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 18:45:39,483 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 18:45:39,483 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 18:45:39,483 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-21 18:45:39,484 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 18:45:39,484 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 18:45:39,484 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 18:45:39,484 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 18:45:39,484 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 18:45:39,484 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 18:45:39,484 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:45:39,485 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 18:45:39,485 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 18:45:39,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:45:39,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 18:45:39,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:45:42,682 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:45:42,682 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 18:45:42,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:45:42 BoogieIcfgContainer [2020-08-21 18:45:42,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:45:42,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:45:42,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:45:42,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:45:42,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:45:38" (1/3) ... [2020-08-21 18:45:42,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12dfdcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:45:42, skipping insertion in model container [2020-08-21 18:45:42,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:45:39" (2/3) ... [2020-08-21 18:45:42,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12dfdcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:45:42, skipping insertion in model container [2020-08-21 18:45:42,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:45:42" (3/3) ... [2020-08-21 18:45:42,697 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product53.cil.c [2020-08-21 18:45:42,707 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:45:42,716 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:45:42,730 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:45:42,753 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:45:42,754 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:45:42,754 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:45:42,754 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:45:42,755 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:45:42,755 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:45:42,755 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:45:42,755 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:45:42,779 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states. [2020-08-21 18:45:42,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 18:45:42,791 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:45:42,792 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] [2020-08-21 18:45:42,793 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:45:42,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:45:42,799 INFO L82 PathProgramCache]: Analyzing trace with hash 805370938, now seen corresponding path program 1 times [2020-08-21 18:45:42,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:45:42,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910409571] [2020-08-21 18:45:42,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:45:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:43,473 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:45:43,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:45:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:43,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:45:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:43,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:45:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:43,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:45:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:43,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:45:43,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:43,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:45:43,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:43,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 18:45:43,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:43,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 18:45:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:43,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:45:43,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910409571] [2020-08-21 18:45:43,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:45:43,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 18:45:43,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511522115] [2020-08-21 18:45:43,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 18:45:43,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:45:43,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 18:45:43,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:45:43,649 INFO L87 Difference]: Start difference. First operand 191 states. Second operand 4 states. [2020-08-21 18:45:44,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:45:44,946 INFO L93 Difference]: Finished difference Result 328 states and 428 transitions. [2020-08-21 18:45:44,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 18:45:44,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-21 18:45:44,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:45:44,963 INFO L225 Difference]: With dead ends: 328 [2020-08-21 18:45:44,963 INFO L226 Difference]: Without dead ends: 181 [2020-08-21 18:45:44,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:45:44,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-08-21 18:45:45,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 148. [2020-08-21 18:45:45,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-08-21 18:45:45,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 176 transitions. [2020-08-21 18:45:45,084 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 176 transitions. Word has length 51 [2020-08-21 18:45:45,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:45:45,085 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 176 transitions. [2020-08-21 18:45:45,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 18:45:45,085 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 176 transitions. [2020-08-21 18:45:45,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 18:45:45,089 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:45:45,089 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] [2020-08-21 18:45:45,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:45:45,090 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:45:45,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:45:45,090 INFO L82 PathProgramCache]: Analyzing trace with hash -239223915, now seen corresponding path program 1 times [2020-08-21 18:45:45,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:45:45,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554909074] [2020-08-21 18:45:45,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:45:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:45,407 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:45:45,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:45:45,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:45,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:45:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:45,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:45:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:45,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:45:45,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:45,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:45:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:45,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:45:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:45,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 18:45:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:45,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 18:45:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:45,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:45:45,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [554909074] [2020-08-21 18:45:45,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:45:45,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 18:45:45,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430428249] [2020-08-21 18:45:45,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 18:45:45,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:45:45,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 18:45:45,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:45:45,467 INFO L87 Difference]: Start difference. First operand 148 states and 176 transitions. Second operand 5 states. [2020-08-21 18:45:46,003 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:45:46,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:45:46,972 INFO L93 Difference]: Finished difference Result 273 states and 339 transitions. [2020-08-21 18:45:46,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 18:45:46,977 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-21 18:45:46,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:45:46,982 INFO L225 Difference]: With dead ends: 273 [2020-08-21 18:45:46,982 INFO L226 Difference]: Without dead ends: 171 [2020-08-21 18:45:46,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 18:45:46,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-08-21 18:45:47,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 139. [2020-08-21 18:45:47,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-21 18:45:47,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 164 transitions. [2020-08-21 18:45:47,037 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 164 transitions. Word has length 52 [2020-08-21 18:45:47,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:45:47,038 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 164 transitions. [2020-08-21 18:45:47,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 18:45:47,038 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 164 transitions. [2020-08-21 18:45:47,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-21 18:45:47,040 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:45:47,041 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] [2020-08-21 18:45:47,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:45:47,041 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:45:47,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:45:47,041 INFO L82 PathProgramCache]: Analyzing trace with hash -2031785454, now seen corresponding path program 1 times [2020-08-21 18:45:47,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:45:47,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681845571] [2020-08-21 18:45:47,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:45:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:47,365 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:45:47,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:45:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:47,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:45:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:47,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:45:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:47,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:45:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:47,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:45:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:47,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:45:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:47,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 18:45:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:47,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:45:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:47,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:45:47,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681845571] [2020-08-21 18:45:47,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:45:47,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 18:45:47,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342956431] [2020-08-21 18:45:47,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 18:45:47,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:45:47,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 18:45:47,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 18:45:47,491 INFO L87 Difference]: Start difference. First operand 139 states and 164 transitions. Second operand 9 states. [2020-08-21 18:45:47,975 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:45:48,276 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:45:48,518 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:45:48,766 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:45:50,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:45:50,121 INFO L93 Difference]: Finished difference Result 282 states and 354 transitions. [2020-08-21 18:45:50,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 18:45:50,121 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-21 18:45:50,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:45:50,125 INFO L225 Difference]: With dead ends: 282 [2020-08-21 18:45:50,125 INFO L226 Difference]: Without dead ends: 171 [2020-08-21 18:45:50,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 18:45:50,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-08-21 18:45:50,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 139. [2020-08-21 18:45:50,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-21 18:45:50,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 163 transitions. [2020-08-21 18:45:50,166 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 163 transitions. Word has length 56 [2020-08-21 18:45:50,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:45:50,166 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 163 transitions. [2020-08-21 18:45:50,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 18:45:50,167 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 163 transitions. [2020-08-21 18:45:50,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-21 18:45:50,170 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:45:50,170 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:45:50,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 18:45:50,170 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:45:50,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:45:50,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1519881096, now seen corresponding path program 1 times [2020-08-21 18:45:50,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:45:50,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494969661] [2020-08-21 18:45:50,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:45:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:50,483 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:45:50,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:45:50,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:50,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:45:50,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:50,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:45:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:50,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:45:50,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:50,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:45:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:50,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:45:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:50,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 18:45:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:50,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:45:50,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:50,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:45:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:50,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:45:50,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:50,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-21 18:45:50,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:50,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 18:45:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:50,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:45:50,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494969661] [2020-08-21 18:45:50,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:45:50,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 18:45:50,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571676389] [2020-08-21 18:45:50,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 18:45:50,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:45:50,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 18:45:50,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 18:45:50,586 INFO L87 Difference]: Start difference. First operand 139 states and 163 transitions. Second operand 7 states. [2020-08-21 18:45:51,015 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:45:52,319 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:45:53,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:45:53,131 INFO L93 Difference]: Finished difference Result 382 states and 483 transitions. [2020-08-21 18:45:53,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 18:45:53,132 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-08-21 18:45:53,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:45:53,136 INFO L225 Difference]: With dead ends: 382 [2020-08-21 18:45:53,136 INFO L226 Difference]: Without dead ends: 271 [2020-08-21 18:45:53,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-21 18:45:53,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-08-21 18:45:53,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 225. [2020-08-21 18:45:53,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-08-21 18:45:53,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 258 transitions. [2020-08-21 18:45:53,213 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 258 transitions. Word has length 74 [2020-08-21 18:45:53,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:45:53,213 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 258 transitions. [2020-08-21 18:45:53,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 18:45:53,214 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 258 transitions. [2020-08-21 18:45:53,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 18:45:53,217 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:45:53,217 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:45:53,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 18:45:53,217 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:45:53,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:45:53,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1815815577, now seen corresponding path program 1 times [2020-08-21 18:45:53,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:45:53,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083179400] [2020-08-21 18:45:53,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:45:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:53,518 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:45:53,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:45:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:53,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:45:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:53,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:45:53,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:53,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:45:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:53,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:45:53,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:53,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:45:53,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:53,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 18:45:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:53,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:45:53,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:53,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:45:53,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:53,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:45:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:53,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:45:53,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:53,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:45:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:53,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 18:45:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:53,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 18:45:53,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:53,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:45:53,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083179400] [2020-08-21 18:45:53,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:45:53,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 18:45:53,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247280939] [2020-08-21 18:45:53,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 18:45:53,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:45:53,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 18:45:53,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 18:45:53,639 INFO L87 Difference]: Start difference. First operand 225 states and 258 transitions. Second operand 9 states. [2020-08-21 18:45:54,185 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:45:55,487 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:45:55,777 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:45:56,029 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:45:56,252 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:45:57,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:45:57,606 INFO L93 Difference]: Finished difference Result 666 states and 830 transitions. [2020-08-21 18:45:57,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 18:45:57,607 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-21 18:45:57,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:45:57,611 INFO L225 Difference]: With dead ends: 666 [2020-08-21 18:45:57,612 INFO L226 Difference]: Without dead ends: 469 [2020-08-21 18:45:57,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-21 18:45:57,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2020-08-21 18:45:57,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 398. [2020-08-21 18:45:57,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-08-21 18:45:57,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 456 transitions. [2020-08-21 18:45:57,694 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 456 transitions. Word has length 88 [2020-08-21 18:45:57,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:45:57,695 INFO L479 AbstractCegarLoop]: Abstraction has 398 states and 456 transitions. [2020-08-21 18:45:57,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 18:45:57,695 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 456 transitions. [2020-08-21 18:45:57,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 18:45:57,697 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:45:57,697 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:45:57,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 18:45:57,698 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:45:57,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:45:57,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1743532533, now seen corresponding path program 1 times [2020-08-21 18:45:57,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:45:57,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410407457] [2020-08-21 18:45:57,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:45:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:57,972 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:45:57,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:45:57,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:57,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:45:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:57,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:45:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:58,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:45:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:58,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:45:58,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:58,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:45:58,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:58,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 18:45:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:58,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 18:45:58,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:58,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:45:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:58,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:45:58,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:58,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:45:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:58,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:45:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:58,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:45:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:58,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 18:45:58,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:58,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 18:45:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:45:58,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:45:58,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [410407457] [2020-08-21 18:45:58,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:45:58,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 18:45:58,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653488430] [2020-08-21 18:45:58,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 18:45:58,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:45:58,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 18:45:58,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 18:45:58,116 INFO L87 Difference]: Start difference. First operand 398 states and 456 transitions. Second operand 10 states. [2020-08-21 18:45:58,765 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:45:59,875 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:46:00,101 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:46:00,385 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:46:00,680 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:46:01,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:46:01,956 INFO L93 Difference]: Finished difference Result 874 states and 1071 transitions. [2020-08-21 18:46:01,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 18:46:01,957 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-08-21 18:46:01,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:46:01,962 INFO L225 Difference]: With dead ends: 874 [2020-08-21 18:46:01,962 INFO L226 Difference]: Without dead ends: 504 [2020-08-21 18:46:01,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-21 18:46:01,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2020-08-21 18:46:02,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 397. [2020-08-21 18:46:02,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-08-21 18:46:02,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 453 transitions. [2020-08-21 18:46:02,048 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 453 transitions. Word has length 92 [2020-08-21 18:46:02,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:46:02,049 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 453 transitions. [2020-08-21 18:46:02,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 18:46:02,049 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 453 transitions. [2020-08-21 18:46:02,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 18:46:02,051 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:46:02,051 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:46:02,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 18:46:02,052 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:46:02,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:46:02,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1672267508, now seen corresponding path program 1 times [2020-08-21 18:46:02,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:46:02,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341593541] [2020-08-21 18:46:02,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:46:02,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:02,364 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:46:02,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:46:02,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:02,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:46:02,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:02,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:46:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:02,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:46:02,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:02,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:46:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:02,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:46:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:02,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 18:46:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:02,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 18:46:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:02,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:46:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:02,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:46:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:02,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:46:02,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:02,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:46:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:02,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:46:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:02,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 18:46:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:02,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 18:46:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:02,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:46:02,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341593541] [2020-08-21 18:46:02,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:46:02,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 18:46:02,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164042179] [2020-08-21 18:46:02,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 18:46:02,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:46:02,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 18:46:02,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 18:46:02,620 INFO L87 Difference]: Start difference. First operand 397 states and 453 transitions. Second operand 10 states. [2020-08-21 18:46:03,900 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:46:04,136 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 18:46:04,374 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:46:04,619 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:46:05,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:46:05,844 INFO L93 Difference]: Finished difference Result 877 states and 1082 transitions. [2020-08-21 18:46:05,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 18:46:05,845 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2020-08-21 18:46:05,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:46:05,849 INFO L225 Difference]: With dead ends: 877 [2020-08-21 18:46:05,849 INFO L226 Difference]: Without dead ends: 508 [2020-08-21 18:46:05,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-21 18:46:05,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-08-21 18:46:05,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 407. [2020-08-21 18:46:05,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-08-21 18:46:05,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 463 transitions. [2020-08-21 18:46:05,929 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 463 transitions. Word has length 93 [2020-08-21 18:46:05,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:46:05,929 INFO L479 AbstractCegarLoop]: Abstraction has 407 states and 463 transitions. [2020-08-21 18:46:05,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 18:46:05,930 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 463 transitions. [2020-08-21 18:46:05,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 18:46:05,931 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:46:05,931 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:46:05,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 18:46:05,932 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:46:05,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:46:05,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1599880950, now seen corresponding path program 1 times [2020-08-21 18:46:05,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:46:05,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630511538] [2020-08-21 18:46:05,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:46:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:06,211 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:46:06,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:46:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:06,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:46:06,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:06,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:46:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:06,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:46:06,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:06,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:46:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:06,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:46:06,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:06,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 18:46:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:06,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 18:46:06,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:06,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:46:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:06,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:46:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:06,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:46:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:06,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:46:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:06,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:46:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:06,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 18:46:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:06,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 18:46:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:06,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:46:06,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630511538] [2020-08-21 18:46:06,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:46:06,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 18:46:06,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072562204] [2020-08-21 18:46:06,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 18:46:06,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:46:06,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 18:46:06,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-21 18:46:06,396 INFO L87 Difference]: Start difference. First operand 407 states and 463 transitions. Second operand 12 states. [2020-08-21 18:46:06,987 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:46:07,220 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:46:07,438 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:46:08,077 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:46:08,330 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:46:08,619 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:46:09,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:46:09,978 INFO L93 Difference]: Finished difference Result 901 states and 1126 transitions. [2020-08-21 18:46:09,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 18:46:09,979 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 93 [2020-08-21 18:46:09,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:46:09,986 INFO L225 Difference]: With dead ends: 901 [2020-08-21 18:46:09,986 INFO L226 Difference]: Without dead ends: 522 [2020-08-21 18:46:09,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-21 18:46:09,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2020-08-21 18:46:10,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 415. [2020-08-21 18:46:10,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2020-08-21 18:46:10,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 471 transitions. [2020-08-21 18:46:10,073 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 471 transitions. Word has length 93 [2020-08-21 18:46:10,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:46:10,075 INFO L479 AbstractCegarLoop]: Abstraction has 415 states and 471 transitions. [2020-08-21 18:46:10,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 18:46:10,075 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 471 transitions. [2020-08-21 18:46:10,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 18:46:10,080 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:46:10,080 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:46:10,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 18:46:10,081 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:46:10,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:46:10,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1929646711, now seen corresponding path program 1 times [2020-08-21 18:46:10,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:46:10,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447600980] [2020-08-21 18:46:10,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:46:10,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:10,361 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:46:10,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:46:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:10,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:46:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:10,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:46:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:10,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:46:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:10,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:46:10,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:10,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:46:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:10,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 18:46:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:10,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 18:46:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:10,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:46:10,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:10,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:46:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:10,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:46:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:10,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:46:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:10,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:46:10,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:10,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 18:46:10,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:10,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 18:46:10,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:10,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:46:10,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447600980] [2020-08-21 18:46:10,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:46:10,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 18:46:10,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927453443] [2020-08-21 18:46:10,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 18:46:10,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:46:10,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 18:46:10,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-21 18:46:10,577 INFO L87 Difference]: Start difference. First operand 415 states and 471 transitions. Second operand 8 states. [2020-08-21 18:46:11,121 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:46:11,616 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:46:13,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:46:13,940 INFO L93 Difference]: Finished difference Result 1240 states and 1603 transitions. [2020-08-21 18:46:13,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 18:46:13,940 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-21 18:46:13,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:46:13,948 INFO L225 Difference]: With dead ends: 1240 [2020-08-21 18:46:13,948 INFO L226 Difference]: Without dead ends: 853 [2020-08-21 18:46:13,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-08-21 18:46:13,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2020-08-21 18:46:14,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 721. [2020-08-21 18:46:14,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 721 states. [2020-08-21 18:46:14,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 849 transitions. [2020-08-21 18:46:14,090 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 849 transitions. Word has length 93 [2020-08-21 18:46:14,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:46:14,090 INFO L479 AbstractCegarLoop]: Abstraction has 721 states and 849 transitions. [2020-08-21 18:46:14,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 18:46:14,090 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 849 transitions. [2020-08-21 18:46:14,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 18:46:14,092 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:46:14,093 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:46:14,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 18:46:14,093 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:46:14,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:46:14,093 INFO L82 PathProgramCache]: Analyzing trace with hash 446997693, now seen corresponding path program 1 times [2020-08-21 18:46:14,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:46:14,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897584621] [2020-08-21 18:46:14,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:46:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:14,373 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:46:14,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:46:14,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:14,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:46:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:14,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:46:14,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:14,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:46:14,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:14,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:46:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:14,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:46:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:14,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:46:14,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:14,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:46:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:14,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 18:46:14,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:14,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:46:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:14,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:46:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:14,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:46:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:14,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:46:14,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:14,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:46:14,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:14,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 18:46:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:14,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 18:46:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:14,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 18:46:14,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897584621] [2020-08-21 18:46:14,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:46:14,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 18:46:14,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580536170] [2020-08-21 18:46:14,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 18:46:14,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:46:14,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 18:46:14,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-21 18:46:14,473 INFO L87 Difference]: Start difference. First operand 721 states and 849 transitions. Second operand 8 states. [2020-08-21 18:46:15,136 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:46:17,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:46:17,647 INFO L93 Difference]: Finished difference Result 1414 states and 1816 transitions. [2020-08-21 18:46:17,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 18:46:17,648 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 97 [2020-08-21 18:46:17,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:46:17,657 INFO L225 Difference]: With dead ends: 1414 [2020-08-21 18:46:17,658 INFO L226 Difference]: Without dead ends: 1411 [2020-08-21 18:46:17,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2020-08-21 18:46:17,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2020-08-21 18:46:17,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1213. [2020-08-21 18:46:17,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1213 states. [2020-08-21 18:46:17,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1442 transitions. [2020-08-21 18:46:17,875 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1442 transitions. Word has length 97 [2020-08-21 18:46:17,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:46:17,875 INFO L479 AbstractCegarLoop]: Abstraction has 1213 states and 1442 transitions. [2020-08-21 18:46:17,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 18:46:17,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1442 transitions. [2020-08-21 18:46:17,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-08-21 18:46:17,879 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:46:17,880 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, 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] [2020-08-21 18:46:17,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 18:46:17,880 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:46:17,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:46:17,881 INFO L82 PathProgramCache]: Analyzing trace with hash 350097324, now seen corresponding path program 1 times [2020-08-21 18:46:17,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:46:17,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39079099] [2020-08-21 18:46:17,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:46:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,140 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:46:18,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:46:18,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:46:18,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:46:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:46:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:46:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:46:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:46:18,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:46:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 18:46:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:46:18,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:46:18,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:46:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:46:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:46:18,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:46:18,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 18:46:18,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:46:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 18:46:18,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-21 18:46:18,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:46:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:46:18,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:46:18,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:46:18,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:46:18,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-21 18:46:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-21 18:46:18,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:18,424 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-21 18:46:18,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39079099] [2020-08-21 18:46:18,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:46:18,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 18:46:18,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076913534] [2020-08-21 18:46:18,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 18:46:18,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:46:18,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 18:46:18,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-21 18:46:18,432 INFO L87 Difference]: Start difference. First operand 1213 states and 1442 transitions. Second operand 13 states. [2020-08-21 18:46:19,470 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:46:19,739 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:46:19,984 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 18:46:20,974 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:46:22,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:46:22,885 INFO L93 Difference]: Finished difference Result 2164 states and 2684 transitions. [2020-08-21 18:46:22,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-21 18:46:22,885 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 160 [2020-08-21 18:46:22,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:46:22,893 INFO L225 Difference]: With dead ends: 2164 [2020-08-21 18:46:22,893 INFO L226 Difference]: Without dead ends: 1113 [2020-08-21 18:46:22,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2020-08-21 18:46:22,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2020-08-21 18:46:23,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 990. [2020-08-21 18:46:23,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 990 states. [2020-08-21 18:46:23,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1164 transitions. [2020-08-21 18:46:23,105 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1164 transitions. Word has length 160 [2020-08-21 18:46:23,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:46:23,106 INFO L479 AbstractCegarLoop]: Abstraction has 990 states and 1164 transitions. [2020-08-21 18:46:23,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 18:46:23,106 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1164 transitions. [2020-08-21 18:46:23,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-08-21 18:46:23,112 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:46:23,112 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:46:23,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 18:46:23,113 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:46:23,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:46:23,113 INFO L82 PathProgramCache]: Analyzing trace with hash -524813042, now seen corresponding path program 1 times [2020-08-21 18:46:23,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:46:23,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436253550] [2020-08-21 18:46:23,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:46:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:23,473 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 18:46:23,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:46:23,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:23,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 18:46:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:23,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:46:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:23,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 18:46:23,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:23,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 18:46:23,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:23,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 18:46:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:23,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 18:46:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:23,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 18:46:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:23,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 18:46:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:23,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:46:23,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:23,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:46:23,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:23,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:46:23,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:23,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:46:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:23,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:46:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:23,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 18:46:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:23,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 18:46:23,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:23,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:46:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:23,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 18:46:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:23,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 18:46:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:23,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-21 18:46:23,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:23,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:46:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:23,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:46:23,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:23,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 18:46:23,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:23,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:46:23,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:23,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:46:23,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:23,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 18:46:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:23,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:46:23,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:23,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-21 18:46:23,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:23,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-21 18:46:23,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:46:23,795 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-08-21 18:46:23,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436253550] [2020-08-21 18:46:23,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:46:23,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-21 18:46:23,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798098826] [2020-08-21 18:46:23,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-21 18:46:23,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:46:23,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-21 18:46:23,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-21 18:46:23,797 INFO L87 Difference]: Start difference. First operand 990 states and 1164 transitions. Second operand 19 states. [2020-08-21 18:46:25,237 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:46:25,646 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:46:25,944 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:46:26,205 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 18:46:26,876 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 18:46:28,103 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:46:28,474 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:46:29,762 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:46:30,052 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:46:30,337 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:46:30,607 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:46:30,870 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:46:31,132 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:46:31,457 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:46:31,714 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 18:46:32,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:46:32,727 INFO L93 Difference]: Finished difference Result 1901 states and 2314 transitions. [2020-08-21 18:46:32,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-21 18:46:32,727 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 173 [2020-08-21 18:46:32,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:46:32,729 INFO L225 Difference]: With dead ends: 1901 [2020-08-21 18:46:32,729 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 18:46:32,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=539, Invalid=2541, Unknown=0, NotChecked=0, Total=3080 [2020-08-21 18:46:32,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 18:46:32,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 18:46:32,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 18:46:32,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 18:46:32,736 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 173 [2020-08-21 18:46:32,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:46:32,736 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 18:46:32,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-21 18:46:32,736 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 18:46:32,736 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 18:46:32,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 18:46:32,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 18:46:35,343 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 332 DAG size of output: 294