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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:08:10,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:08:10,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:08:10,594 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:08:10,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:08:10,595 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:08:10,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:08:10,598 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:08:10,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:08:10,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:08:10,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:08:10,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:08:10,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:08:10,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:08:10,605 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:08:10,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:08:10,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:08:10,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:08:10,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:08:10,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:08:10,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:08:10,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:08:10,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:08:10,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:08:10,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:08:10,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:08:10,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:08:10,619 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:08:10,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:08:10,620 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:08:10,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:08:10,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:08:10,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:08:10,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:08:10,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:08:10,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:08:10,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:08:10,625 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:08:10,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:08:10,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:08:10,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:08:10,627 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-20 13:08:10,641 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:08:10,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:08:10,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 13:08:10,643 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 13:08:10,643 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 13:08:10,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:08:10,644 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:08:10,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 13:08:10,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:08:10,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:08:10,645 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:08:10,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:08:10,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:08:10,645 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:08:10,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:08:10,646 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 13:08:10,646 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:08:10,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:08:10,646 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:08:10,646 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 13:08:10,647 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 13:08:10,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:08:10,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:08:10,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:08:10,648 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 13:08:10,648 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 13:08:10,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:08:10,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 13:08:10,648 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:08:10,676 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:08:10,688 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:08:10,692 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:08:10,693 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:08:10,693 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:08:10,694 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product62.cil.c [2019-09-20 13:08:10,755 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9956eac72/b0a8f56fbc5644a9971d8f3ca8157cf8/FLAG3339ca475 [2019-09-20 13:08:11,265 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:08:11,266 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product62.cil.c [2019-09-20 13:08:11,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9956eac72/b0a8f56fbc5644a9971d8f3ca8157cf8/FLAG3339ca475 [2019-09-20 13:08:11,562 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9956eac72/b0a8f56fbc5644a9971d8f3ca8157cf8 [2019-09-20 13:08:11,574 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:08:11,576 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:08:11,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:08:11,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:08:11,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:08:11,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:08:11" (1/1) ... [2019-09-20 13:08:11,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67af95e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:11, skipping insertion in model container [2019-09-20 13:08:11,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:08:11" (1/1) ... [2019-09-20 13:08:11,593 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:08:11,668 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:08:12,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:08:12,137 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:08:12,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:08:12,346 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:08:12,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:12 WrapperNode [2019-09-20 13:08:12,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:08:12,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:08:12,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:08:12,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:08:12,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:12" (1/1) ... [2019-09-20 13:08:12,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:12" (1/1) ... [2019-09-20 13:08:12,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:12" (1/1) ... [2019-09-20 13:08:12,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:12" (1/1) ... [2019-09-20 13:08:12,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:12" (1/1) ... [2019-09-20 13:08:12,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:12" (1/1) ... [2019-09-20 13:08:12,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:12" (1/1) ... [2019-09-20 13:08:12,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:08:12,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:08:12,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:08:12,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:08:12,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-09-20 13:08:12,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:08:12,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:08:12,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:08:12,550 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:08:12,551 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:08:12,551 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:08:12,551 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-09-20 13:08:12,551 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:08:12,552 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:08:12,552 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:08:12,552 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:08:12,552 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:08:12,553 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:08:12,553 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:08:12,554 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:08:12,554 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-20 13:08:12,556 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-20 13:08:12,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:08:12,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:08:12,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:08:12,557 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:08:12,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:08:12,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:08:12,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:08:12,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:08:12,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:08:12,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:08:12,559 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:08:12,559 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:08:12,559 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:08:12,559 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:08:12,559 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:08:12,559 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:08:12,560 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:08:12,560 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-20 13:08:12,560 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:08:12,560 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:08:12,560 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:08:12,560 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:08:12,560 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:08:12,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:08:12,561 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:08:12,561 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:08:12,561 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:08:12,561 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:08:12,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:08:12,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:08:12,562 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:08:12,562 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:08:12,562 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:08:12,563 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:08:12,563 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:08:12,563 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-20 13:08:12,563 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:08:12,563 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:08:12,563 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:08:12,563 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:08:12,564 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:08:12,564 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-20 13:08:12,564 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:08:12,564 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:08:12,564 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:08:12,564 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:08:12,564 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:08:12,565 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:08:12,565 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-20 13:08:12,565 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-09-20 13:08:12,565 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:08:12,565 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-09-20 13:08:12,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:08:12,567 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:08:12,567 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:08:12,567 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:08:12,567 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:08:12,568 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:08:12,568 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:08:12,568 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:08:12,569 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:08:12,569 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:08:12,569 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:08:12,569 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:08:12,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:08:12,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:08:12,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:08:12,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:08:12,570 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:08:12,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:08:12,570 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:08:12,571 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:08:12,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:08:12,571 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:08:12,572 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:08:12,572 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:08:12,572 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:08:12,572 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:08:12,572 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:08:12,572 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:08:12,573 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:08:12,573 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:08:12,573 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:08:12,573 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:08:12,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:08:12,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:08:12,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:08:13,705 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:08:13,705 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:08:13,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:08:13 BoogieIcfgContainer [2019-09-20 13:08:13,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:08:13,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:08:13,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:08:13,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:08:13,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:08:11" (1/3) ... [2019-09-20 13:08:13,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@adf3486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:08:13, skipping insertion in model container [2019-09-20 13:08:13,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:08:12" (2/3) ... [2019-09-20 13:08:13,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@adf3486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:08:13, skipping insertion in model container [2019-09-20 13:08:13,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:08:13" (3/3) ... [2019-09-20 13:08:13,715 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product62.cil.c [2019-09-20 13:08:13,725 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:08:13,734 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:08:13,751 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:08:13,784 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 13:08:13,785 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:08:13,785 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 13:08:13,786 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:08:13,787 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:08:13,788 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:08:13,788 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:08:13,788 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:08:13,788 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:08:13,820 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states. [2019-09-20 13:08:13,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-20 13:08:13,834 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:13,835 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:13,839 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:13,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:13,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1456889578, now seen corresponding path program 1 times [2019-09-20 13:08:13,846 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:13,846 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:13,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:13,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:13,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:14,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:14,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:14,223 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:14,224 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:08:14,228 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:08:14,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:08:14,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:08:14,246 INFO L87 Difference]: Start difference. First operand 210 states. Second operand 2 states. [2019-09-20 13:08:14,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:14,320 INFO L93 Difference]: Finished difference Result 330 states and 407 transitions. [2019-09-20 13:08:14,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:08:14,322 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-20 13:08:14,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:14,346 INFO L225 Difference]: With dead ends: 330 [2019-09-20 13:08:14,347 INFO L226 Difference]: Without dead ends: 167 [2019-09-20 13:08:14,355 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:08:14,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2019-09-20 13:08:14,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2019-09-20 13:08:14,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2019-09-20 13:08:14,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 197 transitions. [2019-09-20 13:08:14,447 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 197 transitions. Word has length 59 [2019-09-20 13:08:14,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:14,448 INFO L475 AbstractCegarLoop]: Abstraction has 167 states and 197 transitions. [2019-09-20 13:08:14,448 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:08:14,448 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 197 transitions. [2019-09-20 13:08:14,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-20 13:08:14,452 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:14,452 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:14,452 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:14,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:14,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1129690590, now seen corresponding path program 1 times [2019-09-20 13:08:14,453 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:14,453 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:14,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:14,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:14,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:14,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:14,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:14,598 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:14,598 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:08:14,600 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:08:14,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:08:14,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:08:14,601 INFO L87 Difference]: Start difference. First operand 167 states and 197 transitions. Second operand 3 states. [2019-09-20 13:08:14,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:14,626 INFO L93 Difference]: Finished difference Result 275 states and 325 transitions. [2019-09-20 13:08:14,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:08:14,627 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-20 13:08:14,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:14,632 INFO L225 Difference]: With dead ends: 275 [2019-09-20 13:08:14,632 INFO L226 Difference]: Without dead ends: 158 [2019-09-20 13:08:14,637 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:08:14,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2019-09-20 13:08:14,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2019-09-20 13:08:14,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2019-09-20 13:08:14,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 185 transitions. [2019-09-20 13:08:14,666 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 185 transitions. Word has length 60 [2019-09-20 13:08:14,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:14,667 INFO L475 AbstractCegarLoop]: Abstraction has 158 states and 185 transitions. [2019-09-20 13:08:14,667 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:08:14,667 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 185 transitions. [2019-09-20 13:08:14,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-20 13:08:14,674 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:14,674 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:14,676 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:14,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:14,676 INFO L82 PathProgramCache]: Analyzing trace with hash -651026134, now seen corresponding path program 1 times [2019-09-20 13:08:14,676 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:14,677 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:14,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:14,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:14,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:14,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:14,864 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:14,865 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:08:14,865 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:08:14,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:08:14,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:08:14,866 INFO L87 Difference]: Start difference. First operand 158 states and 185 transitions. Second operand 7 states. [2019-09-20 13:08:15,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:15,257 INFO L93 Difference]: Finished difference Result 288 states and 343 transitions. [2019-09-20 13:08:15,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:08:15,258 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2019-09-20 13:08:15,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:15,261 INFO L225 Difference]: With dead ends: 288 [2019-09-20 13:08:15,261 INFO L226 Difference]: Without dead ends: 158 [2019-09-20 13:08:15,262 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:08:15,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2019-09-20 13:08:15,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2019-09-20 13:08:15,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2019-09-20 13:08:15,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 184 transitions. [2019-09-20 13:08:15,279 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 184 transitions. Word has length 65 [2019-09-20 13:08:15,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:15,281 INFO L475 AbstractCegarLoop]: Abstraction has 158 states and 184 transitions. [2019-09-20 13:08:15,281 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:08:15,282 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 184 transitions. [2019-09-20 13:08:15,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-09-20 13:08:15,284 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:15,284 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:15,284 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:15,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:15,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1717523051, now seen corresponding path program 1 times [2019-09-20 13:08:15,285 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:15,285 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:15,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:15,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:15,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:15,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:15,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:15,476 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:15,477 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:08:15,478 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:08:15,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:08:15,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:08:15,479 INFO L87 Difference]: Start difference. First operand 158 states and 184 transitions. Second operand 5 states. [2019-09-20 13:08:16,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:16,117 INFO L93 Difference]: Finished difference Result 412 states and 496 transitions. [2019-09-20 13:08:16,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:08:16,118 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2019-09-20 13:08:16,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:16,123 INFO L225 Difference]: With dead ends: 412 [2019-09-20 13:08:16,123 INFO L226 Difference]: Without dead ends: 282 [2019-09-20 13:08:16,124 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:08:16,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2019-09-20 13:08:16,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 263. [2019-09-20 13:08:16,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2019-09-20 13:08:16,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 298 transitions. [2019-09-20 13:08:16,173 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 298 transitions. Word has length 83 [2019-09-20 13:08:16,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:16,174 INFO L475 AbstractCegarLoop]: Abstraction has 263 states and 298 transitions. [2019-09-20 13:08:16,178 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:08:16,179 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 298 transitions. [2019-09-20 13:08:16,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-09-20 13:08:16,180 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:16,180 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:16,181 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:16,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:16,182 INFO L82 PathProgramCache]: Analyzing trace with hash 119397721, now seen corresponding path program 1 times [2019-09-20 13:08:16,182 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:16,182 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:16,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:16,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:16,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:16,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:08:16,302 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:16,302 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:08:16,303 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:08:16,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:08:16,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:08:16,304 INFO L87 Difference]: Start difference. First operand 263 states and 298 transitions. Second operand 7 states. [2019-09-20 13:08:17,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:17,019 INFO L93 Difference]: Finished difference Result 516 states and 601 transitions. [2019-09-20 13:08:17,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:08:17,020 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2019-09-20 13:08:17,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:17,023 INFO L225 Difference]: With dead ends: 516 [2019-09-20 13:08:17,023 INFO L226 Difference]: Without dead ends: 281 [2019-09-20 13:08:17,025 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:08:17,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2019-09-20 13:08:17,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 262. [2019-09-20 13:08:17,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2019-09-20 13:08:17,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 295 transitions. [2019-09-20 13:08:17,045 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 295 transitions. Word has length 97 [2019-09-20 13:08:17,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:17,046 INFO L475 AbstractCegarLoop]: Abstraction has 262 states and 295 transitions. [2019-09-20 13:08:17,046 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:08:17,046 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 295 transitions. [2019-09-20 13:08:17,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-09-20 13:08:17,048 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:17,048 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:17,049 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:17,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:17,049 INFO L82 PathProgramCache]: Analyzing trace with hash 299468705, now seen corresponding path program 1 times [2019-09-20 13:08:17,049 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:17,049 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:17,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:17,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:17,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:17,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:17,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:17,128 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:17,128 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:08:17,128 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:08:17,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:08:17,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:08:17,129 INFO L87 Difference]: Start difference. First operand 262 states and 295 transitions. Second operand 6 states. [2019-09-20 13:08:17,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:17,166 INFO L93 Difference]: Finished difference Result 503 states and 580 transitions. [2019-09-20 13:08:17,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:08:17,166 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2019-09-20 13:08:17,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:17,170 INFO L225 Difference]: With dead ends: 503 [2019-09-20 13:08:17,170 INFO L226 Difference]: Without dead ends: 269 [2019-09-20 13:08:17,171 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:08:17,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2019-09-20 13:08:17,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 267. [2019-09-20 13:08:17,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2019-09-20 13:08:17,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 300 transitions. [2019-09-20 13:08:17,189 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 300 transitions. Word has length 113 [2019-09-20 13:08:17,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:17,190 INFO L475 AbstractCegarLoop]: Abstraction has 267 states and 300 transitions. [2019-09-20 13:08:17,190 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:08:17,190 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 300 transitions. [2019-09-20 13:08:17,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-09-20 13:08:17,191 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:17,192 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:17,192 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:17,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:17,192 INFO L82 PathProgramCache]: Analyzing trace with hash -2056336545, now seen corresponding path program 1 times [2019-09-20 13:08:17,192 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:17,193 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:17,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:17,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:17,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:17,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:17,313 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:17,313 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:08:17,313 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:08:17,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:08:17,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:08:17,314 INFO L87 Difference]: Start difference. First operand 267 states and 300 transitions. Second operand 8 states. [2019-09-20 13:08:17,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:17,350 INFO L93 Difference]: Finished difference Result 513 states and 591 transitions. [2019-09-20 13:08:17,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:08:17,351 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 113 [2019-09-20 13:08:17,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:17,353 INFO L225 Difference]: With dead ends: 513 [2019-09-20 13:08:17,353 INFO L226 Difference]: Without dead ends: 274 [2019-09-20 13:08:17,354 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:08:17,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2019-09-20 13:08:17,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 271. [2019-09-20 13:08:17,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2019-09-20 13:08:17,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 304 transitions. [2019-09-20 13:08:17,370 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 304 transitions. Word has length 113 [2019-09-20 13:08:17,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:17,370 INFO L475 AbstractCegarLoop]: Abstraction has 271 states and 304 transitions. [2019-09-20 13:08:17,370 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:08:17,371 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 304 transitions. [2019-09-20 13:08:17,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-09-20 13:08:17,372 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:17,372 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:17,373 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:17,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:17,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1287166530, now seen corresponding path program 1 times [2019-09-20 13:08:17,373 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:17,373 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:17,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:17,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:17,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:17,473 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:17,474 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:17,474 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:08:17,474 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:08:17,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:08:17,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:08:17,475 INFO L87 Difference]: Start difference. First operand 271 states and 304 transitions. Second operand 4 states. [2019-09-20 13:08:17,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:17,726 INFO L93 Difference]: Finished difference Result 782 states and 918 transitions. [2019-09-20 13:08:17,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:08:17,726 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2019-09-20 13:08:17,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:17,730 INFO L225 Difference]: With dead ends: 782 [2019-09-20 13:08:17,730 INFO L226 Difference]: Without dead ends: 539 [2019-09-20 13:08:17,731 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:08:17,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2019-09-20 13:08:17,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 530. [2019-09-20 13:08:17,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2019-09-20 13:08:17,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 611 transitions. [2019-09-20 13:08:17,768 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 611 transitions. Word has length 113 [2019-09-20 13:08:17,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:17,769 INFO L475 AbstractCegarLoop]: Abstraction has 530 states and 611 transitions. [2019-09-20 13:08:17,769 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:08:17,769 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 611 transitions. [2019-09-20 13:08:17,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-09-20 13:08:17,771 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:17,771 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:17,772 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:17,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:17,772 INFO L82 PathProgramCache]: Analyzing trace with hash -803017404, now seen corresponding path program 1 times [2019-09-20 13:08:17,772 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:17,772 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:17,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:17,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:17,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:17,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:17,975 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:17,975 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:17,975 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:08:17,976 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:08:17,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:08:17,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:08:17,977 INFO L87 Difference]: Start difference. First operand 530 states and 611 transitions. Second operand 9 states. [2019-09-20 13:08:19,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:19,383 INFO L93 Difference]: Finished difference Result 1395 states and 1676 transitions. [2019-09-20 13:08:19,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:08:19,385 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 117 [2019-09-20 13:08:19,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:19,391 INFO L225 Difference]: With dead ends: 1395 [2019-09-20 13:08:19,391 INFO L226 Difference]: Without dead ends: 970 [2019-09-20 13:08:19,393 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:08:19,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2019-09-20 13:08:19,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 886. [2019-09-20 13:08:19,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 886 states. [2019-09-20 13:08:19,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1009 transitions. [2019-09-20 13:08:19,451 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1009 transitions. Word has length 117 [2019-09-20 13:08:19,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:19,452 INFO L475 AbstractCegarLoop]: Abstraction has 886 states and 1009 transitions. [2019-09-20 13:08:19,452 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:08:19,452 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1009 transitions. [2019-09-20 13:08:19,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-09-20 13:08:19,455 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:19,456 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:19,456 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:19,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:19,457 INFO L82 PathProgramCache]: Analyzing trace with hash -394036424, now seen corresponding path program 1 times [2019-09-20 13:08:19,457 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:19,457 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:19,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:19,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:19,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:19,607 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-09-20 13:08:19,608 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:19,608 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:19,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:19,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 1025 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-20 13:08:19,911 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:20,093 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 38 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:08:20,103 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:20,104 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2019-09-20 13:08:20,106 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-20 13:08:20,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-20 13:08:20,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-09-20 13:08:20,107 INFO L87 Difference]: Start difference. First operand 886 states and 1009 transitions. Second operand 16 states. [2019-09-20 13:08:21,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:21,421 INFO L93 Difference]: Finished difference Result 1979 states and 2332 transitions. [2019-09-20 13:08:21,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-09-20 13:08:21,422 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 195 [2019-09-20 13:08:21,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:21,430 INFO L225 Difference]: With dead ends: 1979 [2019-09-20 13:08:21,430 INFO L226 Difference]: Without dead ends: 1196 [2019-09-20 13:08:21,434 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2019-09-20 13:08:21,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2019-09-20 13:08:21,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 1052. [2019-09-20 13:08:21,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2019-09-20 13:08:21,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1209 transitions. [2019-09-20 13:08:21,547 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1209 transitions. Word has length 195 [2019-09-20 13:08:21,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:21,548 INFO L475 AbstractCegarLoop]: Abstraction has 1052 states and 1209 transitions. [2019-09-20 13:08:21,548 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-20 13:08:21,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1209 transitions. [2019-09-20 13:08:21,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2019-09-20 13:08:21,556 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:21,556 INFO L407 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-20 13:08:21,556 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:21,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:21,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1832576031, now seen corresponding path program 1 times [2019-09-20 13:08:21,557 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:21,557 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:21,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:21,559 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:21,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:21,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:21,762 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 80 proven. 7 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2019-09-20 13:08:21,762 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:21,763 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:21,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:22,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:22,007 INFO L256 TraceCheckSpWp]: Trace formula consists of 1371 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-20 13:08:22,027 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:22,323 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 243 proven. 4 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (3)] Exception during sending of exit command (exit): Stream closed [2019-09-20 13:08:22,329 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:22,330 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 19 [2019-09-20 13:08:22,334 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-20 13:08:22,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-20 13:08:22,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:08:22,335 INFO L87 Difference]: Start difference. First operand 1052 states and 1209 transitions. Second operand 19 states. [2019-09-20 13:08:29,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:29,255 INFO L93 Difference]: Finished difference Result 3945 states and 5430 transitions. [2019-09-20 13:08:29,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2019-09-20 13:08:29,256 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 335 [2019-09-20 13:08:29,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:29,277 INFO L225 Difference]: With dead ends: 3945 [2019-09-20 13:08:29,277 INFO L226 Difference]: Without dead ends: 2929 [2019-09-20 13:08:29,285 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1226 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=607, Invalid=3815, Unknown=0, NotChecked=0, Total=4422 [2019-09-20 13:08:29,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2019-09-20 13:08:29,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 2058. [2019-09-20 13:08:29,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2058 states. [2019-09-20 13:08:29,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2058 states to 2058 states and 2293 transitions. [2019-09-20 13:08:29,475 INFO L78 Accepts]: Start accepts. Automaton has 2058 states and 2293 transitions. Word has length 335 [2019-09-20 13:08:29,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:29,478 INFO L475 AbstractCegarLoop]: Abstraction has 2058 states and 2293 transitions. [2019-09-20 13:08:29,478 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-20 13:08:29,478 INFO L276 IsEmpty]: Start isEmpty. Operand 2058 states and 2293 transitions. [2019-09-20 13:08:29,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2019-09-20 13:08:29,492 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:29,492 INFO L407 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-20 13:08:29,493 INFO L418 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:29,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:29,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1109709713, now seen corresponding path program 1 times [2019-09-20 13:08:29,493 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:29,493 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:29,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:29,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:29,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:29,818 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 100 proven. 63 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2019-09-20 13:08:29,818 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:29,818 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:29,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:30,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 1413 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-20 13:08:30,086 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:30,248 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 280 proven. 18 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2019-09-20 13:08:30,252 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:30,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2019-09-20 13:08:30,254 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-20 13:08:30,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-20 13:08:30,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2019-09-20 13:08:30,255 INFO L87 Difference]: Start difference. First operand 2058 states and 2293 transitions. Second operand 20 states. [2019-09-20 13:08:32,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:32,608 INFO L93 Difference]: Finished difference Result 3906 states and 4371 transitions. [2019-09-20 13:08:32,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:08:32,609 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 351 [2019-09-20 13:08:32,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:32,632 INFO L225 Difference]: With dead ends: 3906 [2019-09-20 13:08:32,632 INFO L226 Difference]: Without dead ends: 2062 [2019-09-20 13:08:32,638 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=830, Unknown=0, NotChecked=0, Total=992 [2019-09-20 13:08:32,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2062 states. [2019-09-20 13:08:32,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2062 to 2058. [2019-09-20 13:08:32,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2058 states. [2019-09-20 13:08:32,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2058 states to 2058 states and 2288 transitions. [2019-09-20 13:08:32,764 INFO L78 Accepts]: Start accepts. Automaton has 2058 states and 2288 transitions. Word has length 351 [2019-09-20 13:08:32,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:32,766 INFO L475 AbstractCegarLoop]: Abstraction has 2058 states and 2288 transitions. [2019-09-20 13:08:32,766 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-20 13:08:32,766 INFO L276 IsEmpty]: Start isEmpty. Operand 2058 states and 2288 transitions. [2019-09-20 13:08:32,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2019-09-20 13:08:32,781 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:32,782 INFO L407 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-20 13:08:32,782 INFO L418 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:32,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:32,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1257330760, now seen corresponding path program 1 times [2019-09-20 13:08:32,783 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:32,784 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:32,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:32,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:32,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:32,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:33,068 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2019-09-20 13:08:33,068 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:33,068 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-09-20 13:08:33,070 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-20 13:08:33,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-20 13:08:33,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:08:33,071 INFO L87 Difference]: Start difference. First operand 2058 states and 2288 transitions. Second operand 13 states. [2019-09-20 13:08:34,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:34,167 INFO L93 Difference]: Finished difference Result 3800 states and 4256 transitions. [2019-09-20 13:08:34,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-20 13:08:34,167 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 352 [2019-09-20 13:08:34,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:34,182 INFO L225 Difference]: With dead ends: 3800 [2019-09-20 13:08:34,182 INFO L226 Difference]: Without dead ends: 1956 [2019-09-20 13:08:34,189 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2019-09-20 13:08:34,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2019-09-20 13:08:34,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 1919. [2019-09-20 13:08:34,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1919 states. [2019-09-20 13:08:34,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1919 states to 1919 states and 2124 transitions. [2019-09-20 13:08:34,303 INFO L78 Accepts]: Start accepts. Automaton has 1919 states and 2124 transitions. Word has length 352 [2019-09-20 13:08:34,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:34,304 INFO L475 AbstractCegarLoop]: Abstraction has 1919 states and 2124 transitions. [2019-09-20 13:08:34,304 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-20 13:08:34,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1919 states and 2124 transitions. [2019-09-20 13:08:34,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2019-09-20 13:08:34,312 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:34,313 INFO L407 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-20 13:08:34,313 INFO L418 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:34,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:34,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1328728622, now seen corresponding path program 1 times [2019-09-20 13:08:34,314 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:34,314 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:34,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:34,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:34,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:34,599 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 98 proven. 46 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2019-09-20 13:08:34,600 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:34,600 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:34,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:34,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:34,860 INFO L256 TraceCheckSpWp]: Trace formula consists of 1422 conjuncts, 28 conjunts are in the unsatisfiable core [2019-09-20 13:08:34,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:35,065 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 206 proven. 16 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2019-09-20 13:08:35,070 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:35,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 14 [2019-09-20 13:08:35,071 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-20 13:08:35,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-20 13:08:35,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2019-09-20 13:08:35,072 INFO L87 Difference]: Start difference. First operand 1919 states and 2124 transitions. Second operand 14 states. [2019-09-20 13:08:37,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:37,535 INFO L93 Difference]: Finished difference Result 4176 states and 5023 transitions. [2019-09-20 13:08:37,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-09-20 13:08:37,536 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 356 [2019-09-20 13:08:37,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:37,554 INFO L225 Difference]: With dead ends: 4176 [2019-09-20 13:08:37,554 INFO L226 Difference]: Without dead ends: 3092 [2019-09-20 13:08:37,559 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 375 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2019-09-20 13:08:37,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2019-09-20 13:08:37,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 2414. [2019-09-20 13:08:37,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2414 states. [2019-09-20 13:08:37,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2414 states to 2414 states and 2681 transitions. [2019-09-20 13:08:37,771 INFO L78 Accepts]: Start accepts. Automaton has 2414 states and 2681 transitions. Word has length 356 [2019-09-20 13:08:37,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:37,772 INFO L475 AbstractCegarLoop]: Abstraction has 2414 states and 2681 transitions. [2019-09-20 13:08:37,772 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-20 13:08:37,773 INFO L276 IsEmpty]: Start isEmpty. Operand 2414 states and 2681 transitions. [2019-09-20 13:08:37,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2019-09-20 13:08:37,791 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:37,792 INFO L407 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:37,792 INFO L418 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:37,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:37,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1364801906, now seen corresponding path program 1 times [2019-09-20 13:08:37,793 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:37,793 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:37,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:37,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:37,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:37,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:38,143 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 122 proven. 76 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2019-09-20 13:08:38,144 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:38,144 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:38,214 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:38,411 INFO L256 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 15 conjunts are in the unsatisfiable core [2019-09-20 13:08:38,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:38,520 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:08:38,674 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 406 proven. 26 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2019-09-20 13:08:38,679 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:38,679 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2019-09-20 13:08:38,681 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-20 13:08:38,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-20 13:08:38,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2019-09-20 13:08:38,681 INFO L87 Difference]: Start difference. First operand 2414 states and 2681 transitions. Second operand 15 states. [2019-09-20 13:08:41,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:41,012 INFO L93 Difference]: Finished difference Result 6622 states and 7819 transitions. [2019-09-20 13:08:41,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-09-20 13:08:41,013 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 430 [2019-09-20 13:08:41,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:41,037 INFO L225 Difference]: With dead ends: 6622 [2019-09-20 13:08:41,037 INFO L226 Difference]: Without dead ends: 4378 [2019-09-20 13:08:41,045 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 431 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=456, Unknown=0, NotChecked=0, Total=600 [2019-09-20 13:08:41,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4378 states. [2019-09-20 13:08:41,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4378 to 3536. [2019-09-20 13:08:41,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3536 states. [2019-09-20 13:08:41,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3536 states to 3536 states and 3919 transitions. [2019-09-20 13:08:41,279 INFO L78 Accepts]: Start accepts. Automaton has 3536 states and 3919 transitions. Word has length 430 [2019-09-20 13:08:41,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:41,279 INFO L475 AbstractCegarLoop]: Abstraction has 3536 states and 3919 transitions. [2019-09-20 13:08:41,279 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-20 13:08:41,280 INFO L276 IsEmpty]: Start isEmpty. Operand 3536 states and 3919 transitions. [2019-09-20 13:08:41,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2019-09-20 13:08:41,290 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:41,290 INFO L407 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:41,291 INFO L418 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:41,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:41,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1261505712, now seen corresponding path program 1 times [2019-09-20 13:08:41,291 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:41,291 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:41,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:41,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:41,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:41,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:41,618 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 114 proven. 16 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2019-09-20 13:08:41,619 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:41,619 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:41,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:41,929 INFO L256 TraceCheckSpWp]: Trace formula consists of 1604 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-20 13:08:41,942 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:42,182 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 330 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2019-09-20 13:08:42,193 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:08:42,194 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2019-09-20 13:08:42,199 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-20 13:08:42,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-20 13:08:42,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:08:42,202 INFO L87 Difference]: Start difference. First operand 3536 states and 3919 transitions. Second operand 13 states. [2019-09-20 13:08:42,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:42,351 INFO L93 Difference]: Finished difference Result 4162 states and 4591 transitions. [2019-09-20 13:08:42,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-20 13:08:42,352 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 430 [2019-09-20 13:08:42,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:42,357 INFO L225 Difference]: With dead ends: 4162 [2019-09-20 13:08:42,357 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:08:42,369 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 429 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-09-20 13:08:42,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:08:42,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:08:42,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:08:42,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:08:42,373 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 430 [2019-09-20 13:08:42,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:42,374 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:08:42,374 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-20 13:08:42,374 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:08:42,374 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:08:42,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-20 13:08:43,542 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 104 [2019-09-20 13:08:44,720 WARN L191 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 38