/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:57:44,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:57:44,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:57:44,483 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:57:44,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:57:44,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:57:44,487 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:57:44,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:57:44,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:57:44,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:57:44,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:57:44,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:57:44,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:57:44,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:57:44,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:57:44,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:57:44,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:57:44,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:57:44,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:57:44,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:57:44,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:57:44,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:57:44,528 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:57:44,529 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:57:44,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:57:44,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:57:44,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:57:44,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:57:44,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:57:44,536 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:57:44,536 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:57:44,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:57:44,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:57:44,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:57:44,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:57:44,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:57:44,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:57:44,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:57:44,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:57:44,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:57:44,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:57:44,543 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 [2019-11-06 21:57:44,556 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:57:44,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:57:44,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:57:44,558 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:57:44,558 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:57:44,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:57:44,558 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:57:44,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:57:44,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:57:44,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:57:44,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:57:44,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:57:44,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:57:44,560 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:57:44,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:57:44,560 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:57:44,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:57:44,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:57:44,560 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:57:44,561 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:57:44,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:57:44,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:57:44,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:57:44,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:57:44,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:57:44,562 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:57:44,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:57:44,562 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:57:44,562 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:57:44,841 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:57:44,859 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:57:44,864 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:57:44,865 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:57:44,866 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:57:44,866 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product37.cil.c [2019-11-06 21:57:44,934 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bd659a77/5b7c90a3c38b4c36854a5d6077814892/FLAG2df840a3d [2019-11-06 21:57:45,465 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:57:45,466 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product37.cil.c [2019-11-06 21:57:45,490 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bd659a77/5b7c90a3c38b4c36854a5d6077814892/FLAG2df840a3d [2019-11-06 21:57:45,754 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bd659a77/5b7c90a3c38b4c36854a5d6077814892 [2019-11-06 21:57:45,762 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:57:45,764 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:57:45,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:57:45,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:57:45,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:57:45,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:45" (1/1) ... [2019-11-06 21:57:45,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10ea409b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:45, skipping insertion in model container [2019-11-06 21:57:45,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:45" (1/1) ... [2019-11-06 21:57:45,780 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:57:45,833 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:57:46,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:57:46,277 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:57:46,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:57:46,407 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:57:46,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:46 WrapperNode [2019-11-06 21:57:46,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:57:46,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:57:46,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:57:46,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:57:46,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:46" (1/1) ... [2019-11-06 21:57:46,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:46" (1/1) ... [2019-11-06 21:57:46,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:46" (1/1) ... [2019-11-06 21:57:46,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:46" (1/1) ... [2019-11-06 21:57:46,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:46" (1/1) ... [2019-11-06 21:57:46,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:46" (1/1) ... [2019-11-06 21:57:46,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:46" (1/1) ... [2019-11-06 21:57:46,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:57:46,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:57:46,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:57:46,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:57:46,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:46" (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 [2019-11-06 21:57:46,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:57:46,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:57:46,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 21:57:46,559 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 21:57:46,559 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-06 21:57:46,560 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 21:57:46,560 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-06 21:57:46,560 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-06 21:57:46,560 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-06 21:57:46,560 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-06 21:57:46,560 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-06 21:57:46,560 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-06 21:57:46,561 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-06 21:57:46,561 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 21:57:46,563 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-11-06 21:57:46,563 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-11-06 21:57:46,565 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-06 21:57:46,566 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-06 21:57:46,566 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-06 21:57:46,567 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-06 21:57:46,567 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-06 21:57:46,567 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-06 21:57:46,567 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-06 21:57:46,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 21:57:46,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 21:57:46,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 21:57:46,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 21:57:46,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 21:57:46,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 21:57:46,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 21:57:46,569 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 21:57:46,569 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 21:57:46,569 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 21:57:46,569 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 21:57:46,569 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:57:46,569 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 21:57:46,570 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 21:57:46,570 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 21:57:46,570 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 21:57:46,570 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:57:46,570 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:57:46,571 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 21:57:46,571 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-06 21:57:46,571 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-06 21:57:46,571 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-06 21:57:46,572 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-06 21:57:46,572 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 21:57:46,572 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-06 21:57:46,572 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-06 21:57:46,572 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-06 21:57:46,572 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-06 21:57:46,572 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-11-06 21:57:46,573 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-06 21:57:46,573 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-06 21:57:46,573 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-06 21:57:46,573 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 21:57:46,573 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-06 21:57:46,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:57:46,573 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-06 21:57:46,574 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-06 21:57:46,574 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 21:57:46,574 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 21:57:46,574 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 21:57:46,574 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-11-06 21:57:46,574 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-06 21:57:46,575 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 21:57:46,575 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 21:57:46,575 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 21:57:46,575 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 21:57:46,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 21:57:46,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 21:57:46,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:57:46,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 21:57:46,576 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 21:57:46,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:57:46,577 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 21:57:46,577 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 21:57:46,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:57:46,577 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 21:57:46,578 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 21:57:46,578 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 21:57:46,578 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 21:57:46,579 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 21:57:46,579 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 21:57:46,579 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 21:57:46,579 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 21:57:46,579 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 21:57:46,580 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:57:46,580 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 21:57:46,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:57:46,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 21:57:46,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:57:47,632 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:57:47,632 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 21:57:47,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:47 BoogieIcfgContainer [2019-11-06 21:57:47,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:57:47,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:57:47,637 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:57:47,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:57:47,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:57:45" (1/3) ... [2019-11-06 21:57:47,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48069377 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:47, skipping insertion in model container [2019-11-06 21:57:47,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:46" (2/3) ... [2019-11-06 21:57:47,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48069377 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:47, skipping insertion in model container [2019-11-06 21:57:47,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:47" (3/3) ... [2019-11-06 21:57:47,644 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product37.cil.c [2019-11-06 21:57:47,655 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:57:47,665 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:57:47,677 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:57:47,712 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:57:47,713 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:57:47,713 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:57:47,713 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:57:47,713 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:57:47,714 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:57:47,714 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:57:47,714 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:57:47,737 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2019-11-06 21:57:47,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-06 21:57:47,746 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:57:47,747 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:57:47,749 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:57:47,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:57:47,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1991715745, now seen corresponding path program 1 times [2019-11-06 21:57:47,763 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:57:47,763 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847368513] [2019-11-06 21:57:47,764 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:57:48,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:48,516 WARN L191 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:57:48,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:48,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:48,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:48,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:48,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:48,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:48,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:48,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:57:48,609 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847368513] [2019-11-06 21:57:48,610 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:57:48,611 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 21:57:48,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549145851] [2019-11-06 21:57:48,622 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:57:48,623 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:57:48,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:57:48,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 21:57:48,651 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 4 states. [2019-11-06 21:57:49,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:57:49,867 INFO L93 Difference]: Finished difference Result 286 states and 375 transitions. [2019-11-06 21:57:49,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:57:49,869 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2019-11-06 21:57:49,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:57:49,885 INFO L225 Difference]: With dead ends: 286 [2019-11-06 21:57:49,885 INFO L226 Difference]: Without dead ends: 159 [2019-11-06 21:57:49,890 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 21:57:49,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2019-11-06 21:57:49,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 128. [2019-11-06 21:57:49,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2019-11-06 21:57:49,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 151 transitions. [2019-11-06 21:57:49,979 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 151 transitions. Word has length 51 [2019-11-06 21:57:49,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:57:49,979 INFO L462 AbstractCegarLoop]: Abstraction has 128 states and 151 transitions. [2019-11-06 21:57:49,980 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:57:49,980 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 151 transitions. [2019-11-06 21:57:49,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-11-06 21:57:49,983 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:57:49,983 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:57:49,984 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:57:49,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:57:49,984 INFO L82 PathProgramCache]: Analyzing trace with hash -392602955, now seen corresponding path program 1 times [2019-11-06 21:57:49,985 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:57:49,985 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424575727] [2019-11-06 21:57:49,985 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:57:50,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:50,327 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:57:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:50,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:50,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:50,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:50,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:50,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:57:50,395 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424575727] [2019-11-06 21:57:50,395 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:57:50,395 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 21:57:50,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864403159] [2019-11-06 21:57:50,407 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 21:57:50,412 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:57:50,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 21:57:50,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:57:50,413 INFO L87 Difference]: Start difference. First operand 128 states and 151 transitions. Second operand 5 states. [2019-11-06 21:57:50,976 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:57:51,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:57:51,913 INFO L93 Difference]: Finished difference Result 231 states and 286 transitions. [2019-11-06 21:57:51,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 21:57:51,914 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2019-11-06 21:57:51,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:57:51,917 INFO L225 Difference]: With dead ends: 231 [2019-11-06 21:57:51,917 INFO L226 Difference]: Without dead ends: 149 [2019-11-06 21:57:51,921 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:57:51,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2019-11-06 21:57:51,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 119. [2019-11-06 21:57:51,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-11-06 21:57:51,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 139 transitions. [2019-11-06 21:57:51,980 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 139 transitions. Word has length 52 [2019-11-06 21:57:51,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:57:51,982 INFO L462 AbstractCegarLoop]: Abstraction has 119 states and 139 transitions. [2019-11-06 21:57:51,982 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 21:57:51,982 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 139 transitions. [2019-11-06 21:57:51,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-06 21:57:51,989 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:57:51,989 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:57:51,989 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:57:51,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:57:51,990 INFO L82 PathProgramCache]: Analyzing trace with hash -368031557, now seen corresponding path program 1 times [2019-11-06 21:57:51,990 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:57:51,990 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949438280] [2019-11-06 21:57:51,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:57:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:52,333 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:57:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:52,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:52,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:52,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:57:52,399 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949438280] [2019-11-06 21:57:52,399 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:57:52,399 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 21:57:52,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360541483] [2019-11-06 21:57:52,400 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 21:57:52,400 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:57:52,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 21:57:52,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:57:52,401 INFO L87 Difference]: Start difference. First operand 119 states and 139 transitions. Second operand 5 states. [2019-11-06 21:57:52,746 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:57:53,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:57:53,630 INFO L93 Difference]: Finished difference Result 240 states and 301 transitions. [2019-11-06 21:57:53,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 21:57:53,630 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2019-11-06 21:57:53,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:57:53,633 INFO L225 Difference]: With dead ends: 240 [2019-11-06 21:57:53,634 INFO L226 Difference]: Without dead ends: 149 [2019-11-06 21:57:53,635 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:57:53,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2019-11-06 21:57:53,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 119. [2019-11-06 21:57:53,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-11-06 21:57:53,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2019-11-06 21:57:53,666 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 56 [2019-11-06 21:57:53,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:57:53,667 INFO L462 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2019-11-06 21:57:53,667 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 21:57:53,667 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2019-11-06 21:57:53,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-11-06 21:57:53,668 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:57:53,669 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:57:53,669 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:57:53,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:57:53,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1230357120, now seen corresponding path program 1 times [2019-11-06 21:57:53,669 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:57:53,670 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769272419] [2019-11-06 21:57:53,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:57:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:54,016 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:57:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:54,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:54,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:54,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:54,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:54,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:54,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:57:54,110 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769272419] [2019-11-06 21:57:54,110 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:57:54,111 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 21:57:54,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292233355] [2019-11-06 21:57:54,112 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 21:57:54,112 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:57:54,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 21:57:54,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:57:54,113 INFO L87 Difference]: Start difference. First operand 119 states and 138 transitions. Second operand 7 states. [2019-11-06 21:57:54,465 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:57:55,803 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:57:56,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:57:56,485 INFO L93 Difference]: Finished difference Result 334 states and 423 transitions. [2019-11-06 21:57:56,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-06 21:57:56,486 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2019-11-06 21:57:56,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:57:56,489 INFO L225 Difference]: With dead ends: 334 [2019-11-06 21:57:56,489 INFO L226 Difference]: Without dead ends: 243 [2019-11-06 21:57:56,490 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2019-11-06 21:57:56,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2019-11-06 21:57:56,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 197. [2019-11-06 21:57:56,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2019-11-06 21:57:56,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 227 transitions. [2019-11-06 21:57:56,541 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 227 transitions. Word has length 69 [2019-11-06 21:57:56,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:57:56,541 INFO L462 AbstractCegarLoop]: Abstraction has 197 states and 227 transitions. [2019-11-06 21:57:56,541 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 21:57:56,542 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 227 transitions. [2019-11-06 21:57:56,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-11-06 21:57:56,543 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:57:56,543 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:57:56,544 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:57:56,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:57:56,544 INFO L82 PathProgramCache]: Analyzing trace with hash 810215565, now seen corresponding path program 1 times [2019-11-06 21:57:56,544 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:57:56,544 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155944890] [2019-11-06 21:57:56,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:57:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:56,827 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:57:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:56,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:56,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:57:56,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:57:56,918 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155944890] [2019-11-06 21:57:56,919 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:57:56,919 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 21:57:56,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840245431] [2019-11-06 21:57:56,920 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 21:57:56,920 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:57:56,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 21:57:56,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:57:56,921 INFO L87 Difference]: Start difference. First operand 197 states and 227 transitions. Second operand 9 states. [2019-11-06 21:57:57,383 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:57:58,612 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:57:58,931 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:57:59,211 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:57:59,474 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:58:00,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:00,661 INFO L93 Difference]: Finished difference Result 582 states and 737 transitions. [2019-11-06 21:58:00,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-06 21:58:00,661 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2019-11-06 21:58:00,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:00,665 INFO L225 Difference]: With dead ends: 582 [2019-11-06 21:58:00,665 INFO L226 Difference]: Without dead ends: 413 [2019-11-06 21:58:00,666 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2019-11-06 21:58:00,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2019-11-06 21:58:00,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 342. [2019-11-06 21:58:00,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2019-11-06 21:58:00,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 394 transitions. [2019-11-06 21:58:00,741 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 394 transitions. Word has length 83 [2019-11-06 21:58:00,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:00,742 INFO L462 AbstractCegarLoop]: Abstraction has 342 states and 394 transitions. [2019-11-06 21:58:00,742 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 21:58:00,742 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 394 transitions. [2019-11-06 21:58:00,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-11-06 21:58:00,744 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:00,744 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:58:00,744 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:00,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:00,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1817856655, now seen corresponding path program 1 times [2019-11-06 21:58:00,745 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:00,745 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736702341] [2019-11-06 21:58:00,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:00,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:01,035 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:01,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:01,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:01,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:01,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:01,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:01,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:01,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:01,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:01,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:01,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:58:01,167 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736702341] [2019-11-06 21:58:01,167 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:58:01,167 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-06 21:58:01,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333281371] [2019-11-06 21:58:01,168 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 21:58:01,168 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:01,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 21:58:01,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:58:01,169 INFO L87 Difference]: Start difference. First operand 342 states and 394 transitions. Second operand 10 states. [2019-11-06 21:58:01,697 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:58:02,982 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:03,233 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:58:03,491 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:03,786 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:04,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:04,981 INFO L93 Difference]: Finished difference Result 762 states and 947 transitions. [2019-11-06 21:58:04,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-06 21:58:04,982 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2019-11-06 21:58:04,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:04,987 INFO L225 Difference]: With dead ends: 762 [2019-11-06 21:58:04,987 INFO L226 Difference]: Without dead ends: 448 [2019-11-06 21:58:04,989 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2019-11-06 21:58:04,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2019-11-06 21:58:05,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 341. [2019-11-06 21:58:05,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2019-11-06 21:58:05,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 391 transitions. [2019-11-06 21:58:05,063 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 391 transitions. Word has length 87 [2019-11-06 21:58:05,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:05,064 INFO L462 AbstractCegarLoop]: Abstraction has 341 states and 391 transitions. [2019-11-06 21:58:05,064 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 21:58:05,064 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 391 transitions. [2019-11-06 21:58:05,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-06 21:58:05,066 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:05,066 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:58:05,066 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:05,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:05,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1046149773, now seen corresponding path program 1 times [2019-11-06 21:58:05,067 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:05,067 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047293384] [2019-11-06 21:58:05,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:05,359 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:05,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:05,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:05,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:05,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:05,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:05,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:05,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:05,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:58:05,577 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047293384] [2019-11-06 21:58:05,578 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:58:05,578 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-06 21:58:05,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943753772] [2019-11-06 21:58:05,579 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 21:58:05,579 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:05,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 21:58:05,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:58:05,579 INFO L87 Difference]: Start difference. First operand 341 states and 391 transitions. Second operand 10 states. [2019-11-06 21:58:06,635 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:58:06,896 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2019-11-06 21:58:07,185 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:58:07,465 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:58:08,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:08,548 INFO L93 Difference]: Finished difference Result 765 states and 956 transitions. [2019-11-06 21:58:08,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 21:58:08,551 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2019-11-06 21:58:08,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:08,555 INFO L225 Difference]: With dead ends: 765 [2019-11-06 21:58:08,555 INFO L226 Difference]: Without dead ends: 452 [2019-11-06 21:58:08,558 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2019-11-06 21:58:08,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2019-11-06 21:58:08,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 351. [2019-11-06 21:58:08,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2019-11-06 21:58:08,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 401 transitions. [2019-11-06 21:58:08,661 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 401 transitions. Word has length 88 [2019-11-06 21:58:08,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:08,662 INFO L462 AbstractCegarLoop]: Abstraction has 351 states and 401 transitions. [2019-11-06 21:58:08,662 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 21:58:08,662 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 401 transitions. [2019-11-06 21:58:08,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-06 21:58:08,663 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:08,664 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:58:08,664 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:08,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:08,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1747749647, now seen corresponding path program 1 times [2019-11-06 21:58:08,665 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:08,665 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872988287] [2019-11-06 21:58:08,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:08,923 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:08,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:08,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:08,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:08,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:08,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:09,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:09,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:58:09,060 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872988287] [2019-11-06 21:58:09,060 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:58:09,060 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-06 21:58:09,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369251748] [2019-11-06 21:58:09,061 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 21:58:09,061 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:09,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 21:58:09,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:58:09,062 INFO L87 Difference]: Start difference. First operand 351 states and 401 transitions. Second operand 12 states. [2019-11-06 21:58:09,684 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:58:09,946 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:58:10,193 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:58:10,902 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:58:11,177 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:58:11,434 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:58:12,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:12,630 INFO L93 Difference]: Finished difference Result 789 states and 998 transitions. [2019-11-06 21:58:12,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-06 21:58:12,631 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2019-11-06 21:58:12,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:12,636 INFO L225 Difference]: With dead ends: 789 [2019-11-06 21:58:12,636 INFO L226 Difference]: Without dead ends: 466 [2019-11-06 21:58:12,638 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2019-11-06 21:58:12,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2019-11-06 21:58:12,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 359. [2019-11-06 21:58:12,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2019-11-06 21:58:12,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 409 transitions. [2019-11-06 21:58:12,707 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 409 transitions. Word has length 88 [2019-11-06 21:58:12,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:12,708 INFO L462 AbstractCegarLoop]: Abstraction has 359 states and 409 transitions. [2019-11-06 21:58:12,708 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-06 21:58:12,708 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 409 transitions. [2019-11-06 21:58:12,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-06 21:58:12,712 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:12,712 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:58:12,712 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:12,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:12,713 INFO L82 PathProgramCache]: Analyzing trace with hash -821736752, now seen corresponding path program 1 times [2019-11-06 21:58:12,713 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:12,714 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721056458] [2019-11-06 21:58:12,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:12,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:12,985 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:13,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:13,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:13,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:13,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:13,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:13,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:58:13,110 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721056458] [2019-11-06 21:58:13,110 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:58:13,110 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 21:58:13,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086012640] [2019-11-06 21:58:13,111 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 21:58:13,111 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:13,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 21:58:13,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-06 21:58:13,112 INFO L87 Difference]: Start difference. First operand 359 states and 409 transitions. Second operand 8 states. [2019-11-06 21:58:13,518 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:58:14,068 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:58:16,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:16,284 INFO L93 Difference]: Finished difference Result 1108 states and 1449 transitions. [2019-11-06 21:58:16,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-06 21:58:16,285 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2019-11-06 21:58:16,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:16,290 INFO L225 Difference]: With dead ends: 1108 [2019-11-06 21:58:16,290 INFO L226 Difference]: Without dead ends: 777 [2019-11-06 21:58:16,292 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2019-11-06 21:58:16,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2019-11-06 21:58:16,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 645. [2019-11-06 21:58:16,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 645 states. [2019-11-06 21:58:16,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 763 transitions. [2019-11-06 21:58:16,416 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 763 transitions. Word has length 88 [2019-11-06 21:58:16,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:16,418 INFO L462 AbstractCegarLoop]: Abstraction has 645 states and 763 transitions. [2019-11-06 21:58:16,418 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 21:58:16,418 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 763 transitions. [2019-11-06 21:58:16,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-11-06 21:58:16,422 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:16,422 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:58:16,422 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:16,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:16,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1708334166, now seen corresponding path program 1 times [2019-11-06 21:58:16,423 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:16,423 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226238231] [2019-11-06 21:58:16,423 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:16,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:16,703 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:16,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:16,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:16,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:16,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:16,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:58:16,808 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226238231] [2019-11-06 21:58:16,808 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:58:16,808 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 21:58:16,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320511893] [2019-11-06 21:58:16,809 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 21:58:16,809 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:16,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 21:58:16,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-06 21:58:16,810 INFO L87 Difference]: Start difference. First operand 645 states and 763 transitions. Second operand 8 states. [2019-11-06 21:58:17,524 WARN L191 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-11-06 21:58:19,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:19,562 INFO L93 Difference]: Finished difference Result 1272 states and 1654 transitions. [2019-11-06 21:58:19,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-06 21:58:19,562 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 92 [2019-11-06 21:58:19,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:19,570 INFO L225 Difference]: With dead ends: 1272 [2019-11-06 21:58:19,571 INFO L226 Difference]: Without dead ends: 1269 [2019-11-06 21:58:19,572 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2019-11-06 21:58:19,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2019-11-06 21:58:19,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1071. [2019-11-06 21:58:19,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1071 states. [2019-11-06 21:58:19,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1280 transitions. [2019-11-06 21:58:19,763 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1280 transitions. Word has length 92 [2019-11-06 21:58:19,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:19,763 INFO L462 AbstractCegarLoop]: Abstraction has 1071 states and 1280 transitions. [2019-11-06 21:58:19,763 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 21:58:19,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1280 transitions. [2019-11-06 21:58:19,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-11-06 21:58:19,770 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:19,771 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:58:19,771 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:19,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:19,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1546611492, now seen corresponding path program 1 times [2019-11-06 21:58:19,771 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:19,772 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625813124] [2019-11-06 21:58:19,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:19,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:20,088 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:20,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:20,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:20,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:20,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:20,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:20,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:20,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:20,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:20,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:20,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:20,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:20,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:20,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:20,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:20,625 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-11-06 21:58:20,625 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625813124] [2019-11-06 21:58:20,626 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316468986] [2019-11-06 21:58:20,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:58:20,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:20,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-06 21:58:20,993 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:58:21,293 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-06 21:58:21,293 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:58:21,294 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [19] total 24 [2019-11-06 21:58:21,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81171085] [2019-11-06 21:58:21,295 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 21:58:21,295 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:21,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 21:58:21,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2019-11-06 21:58:21,296 INFO L87 Difference]: Start difference. First operand 1071 states and 1280 transitions. Second operand 8 states. [2019-11-06 21:58:21,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:21,764 INFO L93 Difference]: Finished difference Result 1931 states and 2290 transitions. [2019-11-06 21:58:21,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 21:58:21,765 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 150 [2019-11-06 21:58:21,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:21,771 INFO L225 Difference]: With dead ends: 1931 [2019-11-06 21:58:21,771 INFO L226 Difference]: Without dead ends: 888 [2019-11-06 21:58:21,775 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 187 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2019-11-06 21:58:21,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2019-11-06 21:58:22,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 888. [2019-11-06 21:58:22,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 888 states. [2019-11-06 21:58:22,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1015 transitions. [2019-11-06 21:58:22,009 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1015 transitions. Word has length 150 [2019-11-06 21:58:22,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:22,011 INFO L462 AbstractCegarLoop]: Abstraction has 888 states and 1015 transitions. [2019-11-06 21:58:22,011 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 21:58:22,012 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1015 transitions. [2019-11-06 21:58:22,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-11-06 21:58:22,015 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:58:22,015 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:58:22,219 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:58:22,220 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:58:22,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:58:22,220 INFO L82 PathProgramCache]: Analyzing trace with hash 182941043, now seen corresponding path program 1 times [2019-11-06 21:58:22,220 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:58:22,220 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665273432] [2019-11-06 21:58:22,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:58:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:22,557 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:58:22,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:22,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:22,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:22,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:22,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:22,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:22,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:22,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:22,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:22,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:22,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:22,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:22,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:22,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:22,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:22,743 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-06 21:58:22,743 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665273432] [2019-11-06 21:58:22,744 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699963611] [2019-11-06 21:58:22,744 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:58:22,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:58:23,002 INFO L256 TraceCheckSpWp]: Trace formula consists of 904 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 21:58:23,018 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:58:23,077 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:58:23,078 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:58:23,078 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 13 [2019-11-06 21:58:23,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509728631] [2019-11-06 21:58:23,079 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 21:58:23,079 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:58:23,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 21:58:23,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2019-11-06 21:58:23,080 INFO L87 Difference]: Start difference. First operand 888 states and 1015 transitions. Second operand 3 states. [2019-11-06 21:58:23,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:58:23,411 INFO L93 Difference]: Finished difference Result 1478 states and 1719 transitions. [2019-11-06 21:58:23,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 21:58:23,412 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 150 [2019-11-06 21:58:23,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:58:23,413 INFO L225 Difference]: With dead ends: 1478 [2019-11-06 21:58:23,413 INFO L226 Difference]: Without dead ends: 0 [2019-11-06 21:58:23,418 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2019-11-06 21:58:23,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-06 21:58:23,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-06 21:58:23,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-06 21:58:23,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-06 21:58:23,420 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 150 [2019-11-06 21:58:23,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:58:23,420 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-06 21:58:23,420 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 21:58:23,420 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-06 21:58:23,420 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.