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/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:46:35,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:46:35,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:46:35,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:46:35,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:46:35,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:46:35,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:46:35,516 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:46:35,518 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:46:35,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:46:35,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:46:35,522 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:46:35,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:46:35,523 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:46:35,524 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:46:35,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:46:35,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:46:35,532 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:46:35,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:46:35,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:46:35,542 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:46:35,543 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:46:35,546 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:46:35,547 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:46:35,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:46:35,551 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:46:35,551 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:46:35,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:46:35,555 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:46:35,556 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:46:35,557 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:46:35,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:46:35,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:46:35,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:46:35,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:46:35,563 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:46:35,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:46:35,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:46:35,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:46:35,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:46:35,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:46:35,569 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 [2019-10-13 19:46:35,590 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:46:35,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:46:35,593 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:46:35,593 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:46:35,593 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:46:35,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:46:35,594 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:46:35,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:46:35,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:46:35,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:46:35,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:46:35,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:46:35,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:46:35,596 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:46:35,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:46:35,596 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:46:35,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:46:35,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:46:35,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:46:35,597 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:46:35,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:46:35,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:46:35,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:46:35,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:46:35,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:46:35,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:46:35,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:46:35,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:46:35,599 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:46:35,865 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:46:35,886 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:46:35,889 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:46:35,890 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:46:35,891 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:46:35,891 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c [2019-10-13 19:46:35,966 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5af5b7306/4f8bd910058341ab918f103f8279043e/FLAGed329a0af [2019-10-13 19:46:36,509 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:46:36,510 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c [2019-10-13 19:46:36,524 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5af5b7306/4f8bd910058341ab918f103f8279043e/FLAGed329a0af [2019-10-13 19:46:36,844 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5af5b7306/4f8bd910058341ab918f103f8279043e [2019-10-13 19:46:36,855 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:46:36,857 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:46:36,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:46:36,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:46:36,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:46:36,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:46:36" (1/1) ... [2019-10-13 19:46:36,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@640928e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:36, skipping insertion in model container [2019-10-13 19:46:36,864 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:46:36" (1/1) ... [2019-10-13 19:46:36,872 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:46:36,932 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:46:37,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:46:37,313 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:46:37,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:46:37,413 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:46:37,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:37 WrapperNode [2019-10-13 19:46:37,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:46:37,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:46:37,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:46:37,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:46:37,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:37" (1/1) ... [2019-10-13 19:46:37,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:37" (1/1) ... [2019-10-13 19:46:37,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:37" (1/1) ... [2019-10-13 19:46:37,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:37" (1/1) ... [2019-10-13 19:46:37,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:37" (1/1) ... [2019-10-13 19:46:37,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:37" (1/1) ... [2019-10-13 19:46:37,498 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:37" (1/1) ... [2019-10-13 19:46:37,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:46:37,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:46:37,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:46:37,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:46:37,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:37" (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 [2019-10-13 19:46:37,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:46:37,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:46:37,570 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side1_failed_history [2019-10-13 19:46:37,570 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2019-10-13 19:46:37,570 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side2_failed_history [2019-10-13 19:46:37,571 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2019-10-13 19:46:37,571 INFO L138 BoogieDeclarations]: Found implementation of procedure write_active_side_history [2019-10-13 19:46:37,572 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2019-10-13 19:46:37,572 INFO L138 BoogieDeclarations]: Found implementation of procedure write_manual_selection_history [2019-10-13 19:46:37,572 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2019-10-13 19:46:37,572 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2019-10-13 19:46:37,572 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2019-10-13 19:46:37,572 INFO L138 BoogieDeclarations]: Found implementation of procedure Console_task_each_pals_period [2019-10-13 19:46:37,572 INFO L138 BoogieDeclarations]: Found implementation of procedure Side1_activestandby_task_each_pals_period [2019-10-13 19:46:37,574 INFO L138 BoogieDeclarations]: Found implementation of procedure Side2_activestandby_task_each_pals_period [2019-10-13 19:46:37,574 INFO L138 BoogieDeclarations]: Found implementation of procedure Pendulum_prism_task_each_pals_period [2019-10-13 19:46:37,574 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2019-10-13 19:46:37,574 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:46:37,574 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2019-10-13 19:46:37,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:46:37,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-13 19:46:37,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-13 19:46:37,575 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-10-13 19:46:37,575 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-10-13 19:46:37,575 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-10-13 19:46:37,576 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 19:46:37,576 INFO L130 BoogieDeclarations]: Found specification of procedure write_side1_failed_history [2019-10-13 19:46:37,576 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2019-10-13 19:46:37,576 INFO L130 BoogieDeclarations]: Found specification of procedure write_side2_failed_history [2019-10-13 19:46:37,576 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2019-10-13 19:46:37,576 INFO L130 BoogieDeclarations]: Found specification of procedure write_active_side_history [2019-10-13 19:46:37,576 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2019-10-13 19:46:37,576 INFO L130 BoogieDeclarations]: Found specification of procedure write_manual_selection_history [2019-10-13 19:46:37,577 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2019-10-13 19:46:37,577 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-13 19:46:37,577 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2019-10-13 19:46:37,577 INFO L130 BoogieDeclarations]: Found specification of procedure Console_task_each_pals_period [2019-10-13 19:46:37,577 INFO L130 BoogieDeclarations]: Found specification of procedure Side1_activestandby_task_each_pals_period [2019-10-13 19:46:37,577 INFO L130 BoogieDeclarations]: Found specification of procedure Side2_activestandby_task_each_pals_period [2019-10-13 19:46:37,577 INFO L130 BoogieDeclarations]: Found specification of procedure Pendulum_prism_task_each_pals_period [2019-10-13 19:46:37,577 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-13 19:46:37,577 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:46:37,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:46:37,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:46:38,448 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:46:38,449 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 19:46:38,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:46:38 BoogieIcfgContainer [2019-10-13 19:46:38,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:46:38,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:46:38,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:46:38,455 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:46:38,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:46:36" (1/3) ... [2019-10-13 19:46:38,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dfd7c35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:46:38, skipping insertion in model container [2019-10-13 19:46:38,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:46:37" (2/3) ... [2019-10-13 19:46:38,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dfd7c35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:46:38, skipping insertion in model container [2019-10-13 19:46:38,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:46:38" (3/3) ... [2019-10-13 19:46:38,459 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c [2019-10-13 19:46:38,469 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:46:38,477 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:46:38,488 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:46:38,513 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:46:38,513 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:46:38,513 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:46:38,514 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:46:38,514 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:46:38,514 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:46:38,514 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:46:38,515 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:46:38,540 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states. [2019-10-13 19:46:38,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-10-13 19:46:38,550 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:38,552 INFO L380 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] [2019-10-13 19:46:38,554 INFO L410 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:38,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:38,560 INFO L82 PathProgramCache]: Analyzing trace with hash -95402615, now seen corresponding path program 1 times [2019-10-13 19:46:38,569 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:38,570 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544961031] [2019-10-13 19:46:38,570 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:38,571 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:38,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:39,126 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2019-10-13 19:46:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:39,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:39,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:39,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:39,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:39,506 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544961031] [2019-10-13 19:46:39,507 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:39,507 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 19:46:39,508 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678437536] [2019-10-13 19:46:39,514 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 19:46:39,514 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:39,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 19:46:39,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:46:39,533 INFO L87 Difference]: Start difference. First operand 236 states. Second operand 11 states. [2019-10-13 19:46:39,800 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-10-13 19:46:42,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:42,087 INFO L93 Difference]: Finished difference Result 448 states and 692 transitions. [2019-10-13 19:46:42,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 19:46:42,089 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 65 [2019-10-13 19:46:42,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:42,113 INFO L225 Difference]: With dead ends: 448 [2019-10-13 19:46:42,114 INFO L226 Difference]: Without dead ends: 231 [2019-10-13 19:46:42,128 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:46:42,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2019-10-13 19:46:42,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2019-10-13 19:46:42,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2019-10-13 19:46:42,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 323 transitions. [2019-10-13 19:46:42,240 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 323 transitions. Word has length 65 [2019-10-13 19:46:42,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:42,241 INFO L462 AbstractCegarLoop]: Abstraction has 231 states and 323 transitions. [2019-10-13 19:46:42,241 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 19:46:42,241 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 323 transitions. [2019-10-13 19:46:42,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-10-13 19:46:42,245 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:42,246 INFO L380 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] [2019-10-13 19:46:42,246 INFO L410 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:42,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:42,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1971874243, now seen corresponding path program 1 times [2019-10-13 19:46:42,247 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:42,247 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078234328] [2019-10-13 19:46:42,247 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:42,247 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:42,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:42,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:42,617 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2019-10-13 19:46:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:42,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:42,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:42,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:42,798 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078234328] [2019-10-13 19:46:42,798 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:42,799 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 19:46:42,799 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013049240] [2019-10-13 19:46:42,801 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 19:46:42,801 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:42,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 19:46:42,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:46:42,802 INFO L87 Difference]: Start difference. First operand 231 states and 323 transitions. Second operand 11 states. [2019-10-13 19:46:43,298 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2019-10-13 19:46:44,010 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-10-13 19:46:44,169 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-10-13 19:46:45,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:45,329 INFO L93 Difference]: Finished difference Result 444 states and 634 transitions. [2019-10-13 19:46:45,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 19:46:45,330 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 76 [2019-10-13 19:46:45,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:45,334 INFO L225 Difference]: With dead ends: 444 [2019-10-13 19:46:45,334 INFO L226 Difference]: Without dead ends: 235 [2019-10-13 19:46:45,336 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2019-10-13 19:46:45,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2019-10-13 19:46:45,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2019-10-13 19:46:45,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2019-10-13 19:46:45,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 326 transitions. [2019-10-13 19:46:45,378 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 326 transitions. Word has length 76 [2019-10-13 19:46:45,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:45,378 INFO L462 AbstractCegarLoop]: Abstraction has 235 states and 326 transitions. [2019-10-13 19:46:45,379 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 19:46:45,379 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 326 transitions. [2019-10-13 19:46:45,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-13 19:46:45,382 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:45,383 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:46:45,383 INFO L410 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:45,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:45,383 INFO L82 PathProgramCache]: Analyzing trace with hash 350215030, now seen corresponding path program 1 times [2019-10-13 19:46:45,384 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:45,384 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476633490] [2019-10-13 19:46:45,384 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:45,384 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:45,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:45,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:45,610 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2019-10-13 19:46:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:45,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:45,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:45,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:45,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:45,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:46,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:46,005 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476633490] [2019-10-13 19:46:46,005 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:46,005 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2019-10-13 19:46:46,006 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177385758] [2019-10-13 19:46:46,006 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 19:46:46,007 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:46,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 19:46:46,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2019-10-13 19:46:46,008 INFO L87 Difference]: Start difference. First operand 235 states and 326 transitions. Second operand 16 states. [2019-10-13 19:46:46,205 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-10-13 19:46:47,540 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-10-13 19:46:48,237 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-10-13 19:46:50,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:50,335 INFO L93 Difference]: Finished difference Result 535 states and 744 transitions. [2019-10-13 19:46:50,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-13 19:46:50,338 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 94 [2019-10-13 19:46:50,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:50,347 INFO L225 Difference]: With dead ends: 535 [2019-10-13 19:46:50,347 INFO L226 Difference]: Without dead ends: 322 [2019-10-13 19:46:50,349 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 19:46:50,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2019-10-13 19:46:50,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 321. [2019-10-13 19:46:50,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2019-10-13 19:46:50,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 438 transitions. [2019-10-13 19:46:50,397 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 438 transitions. Word has length 94 [2019-10-13 19:46:50,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:50,398 INFO L462 AbstractCegarLoop]: Abstraction has 321 states and 438 transitions. [2019-10-13 19:46:50,398 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 19:46:50,398 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 438 transitions. [2019-10-13 19:46:50,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-13 19:46:50,400 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:50,400 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:46:50,401 INFO L410 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:50,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:50,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1125111825, now seen corresponding path program 1 times [2019-10-13 19:46:50,404 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:50,404 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075706383] [2019-10-13 19:46:50,405 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:50,405 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:50,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:50,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:50,622 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2019-10-13 19:46:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:50,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:50,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:50,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:50,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:50,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:50,991 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075706383] [2019-10-13 19:46:50,991 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:50,992 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2019-10-13 19:46:50,992 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243485293] [2019-10-13 19:46:50,995 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 19:46:50,996 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:50,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 19:46:50,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2019-10-13 19:46:50,998 INFO L87 Difference]: Start difference. First operand 321 states and 438 transitions. Second operand 16 states. [2019-10-13 19:46:51,190 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-10-13 19:46:53,136 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-10-13 19:46:55,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:55,212 INFO L93 Difference]: Finished difference Result 541 states and 752 transitions. [2019-10-13 19:46:55,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-13 19:46:55,213 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 95 [2019-10-13 19:46:55,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:55,217 INFO L225 Difference]: With dead ends: 541 [2019-10-13 19:46:55,217 INFO L226 Difference]: Without dead ends: 325 [2019-10-13 19:46:55,219 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 19:46:55,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2019-10-13 19:46:55,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 321. [2019-10-13 19:46:55,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2019-10-13 19:46:55,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 438 transitions. [2019-10-13 19:46:55,256 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 438 transitions. Word has length 95 [2019-10-13 19:46:55,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:55,257 INFO L462 AbstractCegarLoop]: Abstraction has 321 states and 438 transitions. [2019-10-13 19:46:55,257 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 19:46:55,257 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 438 transitions. [2019-10-13 19:46:55,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-13 19:46:55,259 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:55,259 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:46:55,259 INFO L410 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:55,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:55,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1068609311, now seen corresponding path program 1 times [2019-10-13 19:46:55,260 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:55,260 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902383003] [2019-10-13 19:46:55,260 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:55,261 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:55,261 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:55,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:55,483 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2019-10-13 19:46:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:55,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:55,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:55,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:55,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:55,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:55,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:55,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:55,750 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902383003] [2019-10-13 19:46:55,751 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:55,751 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:46:55,751 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030770009] [2019-10-13 19:46:55,752 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:46:55,752 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:55,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:46:55,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:46:55,753 INFO L87 Difference]: Start difference. First operand 321 states and 438 transitions. Second operand 12 states. [2019-10-13 19:46:56,555 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-10-13 19:46:59,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:59,457 INFO L93 Difference]: Finished difference Result 770 states and 1075 transitions. [2019-10-13 19:46:59,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-13 19:46:59,457 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 97 [2019-10-13 19:46:59,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:59,464 INFO L225 Difference]: With dead ends: 770 [2019-10-13 19:46:59,464 INFO L226 Difference]: Without dead ends: 554 [2019-10-13 19:46:59,467 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2019-10-13 19:46:59,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2019-10-13 19:46:59,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 537. [2019-10-13 19:46:59,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2019-10-13 19:46:59,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 745 transitions. [2019-10-13 19:46:59,545 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 745 transitions. Word has length 97 [2019-10-13 19:46:59,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:59,546 INFO L462 AbstractCegarLoop]: Abstraction has 537 states and 745 transitions. [2019-10-13 19:46:59,546 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:46:59,546 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 745 transitions. [2019-10-13 19:46:59,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-13 19:46:59,548 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:59,548 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:46:59,548 INFO L410 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:59,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:59,549 INFO L82 PathProgramCache]: Analyzing trace with hash -2002189277, now seen corresponding path program 1 times [2019-10-13 19:46:59,549 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:59,549 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787064444] [2019-10-13 19:46:59,549 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:59,550 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:59,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:59,747 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2019-10-13 19:46:59,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:59,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:59,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:59,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:59,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:59,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:59,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:59,967 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787064444] [2019-10-13 19:46:59,968 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:59,968 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:46:59,968 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721224104] [2019-10-13 19:46:59,970 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:46:59,970 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:59,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:46:59,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:46:59,971 INFO L87 Difference]: Start difference. First operand 537 states and 745 transitions. Second operand 12 states. [2019-10-13 19:47:01,384 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-10-13 19:47:02,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:47:02,232 INFO L93 Difference]: Finished difference Result 927 states and 1308 transitions. [2019-10-13 19:47:02,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 19:47:02,232 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 98 [2019-10-13 19:47:02,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:47:02,239 INFO L225 Difference]: With dead ends: 927 [2019-10-13 19:47:02,239 INFO L226 Difference]: Without dead ends: 537 [2019-10-13 19:47:02,241 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=121, Invalid=259, Unknown=0, NotChecked=0, Total=380 [2019-10-13 19:47:02,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2019-10-13 19:47:02,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2019-10-13 19:47:02,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2019-10-13 19:47:02,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 744 transitions. [2019-10-13 19:47:02,308 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 744 transitions. Word has length 98 [2019-10-13 19:47:02,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:47:02,310 INFO L462 AbstractCegarLoop]: Abstraction has 537 states and 744 transitions. [2019-10-13 19:47:02,310 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:47:02,310 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 744 transitions. [2019-10-13 19:47:02,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-13 19:47:02,312 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:47:02,312 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:47:02,312 INFO L410 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:47:02,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:47:02,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1591713441, now seen corresponding path program 1 times [2019-10-13 19:47:02,313 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:47:02,313 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321415238] [2019-10-13 19:47:02,313 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:47:02,313 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:47:02,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:47:02,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:02,495 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2019-10-13 19:47:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:02,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:02,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:02,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:02,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:02,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:47:02,737 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321415238] [2019-10-13 19:47:02,738 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:47:02,738 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:47:02,738 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427087394] [2019-10-13 19:47:02,739 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:47:02,739 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:47:02,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:47:02,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:47:02,740 INFO L87 Difference]: Start difference. First operand 537 states and 744 transitions. Second operand 12 states. [2019-10-13 19:47:03,739 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-10-13 19:47:06,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:47:06,201 INFO L93 Difference]: Finished difference Result 1168 states and 1640 transitions. [2019-10-13 19:47:06,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-13 19:47:06,201 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 98 [2019-10-13 19:47:06,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:47:06,207 INFO L225 Difference]: With dead ends: 1168 [2019-10-13 19:47:06,207 INFO L226 Difference]: Without dead ends: 728 [2019-10-13 19:47:06,210 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2019-10-13 19:47:06,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2019-10-13 19:47:06,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 722. [2019-10-13 19:47:06,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 722 states. [2019-10-13 19:47:06,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 1008 transitions. [2019-10-13 19:47:06,303 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 1008 transitions. Word has length 98 [2019-10-13 19:47:06,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:47:06,303 INFO L462 AbstractCegarLoop]: Abstraction has 722 states and 1008 transitions. [2019-10-13 19:47:06,303 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:47:06,303 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 1008 transitions. [2019-10-13 19:47:06,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-13 19:47:06,306 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:47:06,306 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:47:06,307 INFO L410 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:47:06,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:47:06,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1901314178, now seen corresponding path program 1 times [2019-10-13 19:47:06,308 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:47:06,308 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524355800] [2019-10-13 19:47:06,308 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:47:06,308 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:47:06,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:47:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:06,522 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2019-10-13 19:47:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:06,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:06,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:06,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:06,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:06,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:06,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:06,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:47:06,743 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524355800] [2019-10-13 19:47:06,743 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:47:06,743 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-13 19:47:06,744 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226540936] [2019-10-13 19:47:06,744 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-13 19:47:06,744 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:47:06,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-13 19:47:06,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:47:06,745 INFO L87 Difference]: Start difference. First operand 722 states and 1008 transitions. Second operand 13 states. [2019-10-13 19:47:08,228 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-10-13 19:47:08,371 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-10-13 19:47:09,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:47:09,337 INFO L93 Difference]: Finished difference Result 1308 states and 1853 transitions. [2019-10-13 19:47:09,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 19:47:09,338 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 98 [2019-10-13 19:47:09,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:47:09,345 INFO L225 Difference]: With dead ends: 1308 [2019-10-13 19:47:09,345 INFO L226 Difference]: Without dead ends: 737 [2019-10-13 19:47:09,351 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2019-10-13 19:47:09,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2019-10-13 19:47:09,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 737. [2019-10-13 19:47:09,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 737 states. [2019-10-13 19:47:09,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1020 transitions. [2019-10-13 19:47:09,431 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1020 transitions. Word has length 98 [2019-10-13 19:47:09,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:47:09,433 INFO L462 AbstractCegarLoop]: Abstraction has 737 states and 1020 transitions. [2019-10-13 19:47:09,433 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-13 19:47:09,433 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1020 transitions. [2019-10-13 19:47:09,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-10-13 19:47:09,435 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:47:09,435 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:47:09,435 INFO L410 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:47:09,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:47:09,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1229557918, now seen corresponding path program 1 times [2019-10-13 19:47:09,436 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:47:09,444 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823523985] [2019-10-13 19:47:09,445 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:47:09,445 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:47:09,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:47:09,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:09,677 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2019-10-13 19:47:09,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:09,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:09,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:09,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:09,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:09,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:09,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:47:09,961 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823523985] [2019-10-13 19:47:09,961 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:47:09,962 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-13 19:47:09,962 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574267745] [2019-10-13 19:47:09,963 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-13 19:47:09,963 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:47:09,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-13 19:47:09,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:47:09,964 INFO L87 Difference]: Start difference. First operand 737 states and 1020 transitions. Second operand 13 states. [2019-10-13 19:47:11,604 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2019-10-13 19:47:11,759 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-10-13 19:47:12,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:47:12,627 INFO L93 Difference]: Finished difference Result 1338 states and 1886 transitions. [2019-10-13 19:47:12,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 19:47:12,627 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 106 [2019-10-13 19:47:12,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:47:12,634 INFO L225 Difference]: With dead ends: 1338 [2019-10-13 19:47:12,634 INFO L226 Difference]: Without dead ends: 752 [2019-10-13 19:47:12,637 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2019-10-13 19:47:12,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2019-10-13 19:47:12,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 752. [2019-10-13 19:47:12,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 752 states. [2019-10-13 19:47:12,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1032 transitions. [2019-10-13 19:47:12,709 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1032 transitions. Word has length 106 [2019-10-13 19:47:12,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:47:12,709 INFO L462 AbstractCegarLoop]: Abstraction has 752 states and 1032 transitions. [2019-10-13 19:47:12,710 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-13 19:47:12,710 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1032 transitions. [2019-10-13 19:47:12,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-10-13 19:47:12,712 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:47:12,712 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:47:12,712 INFO L410 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:47:12,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:47:12,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1709526252, now seen corresponding path program 1 times [2019-10-13 19:47:12,713 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:47:12,713 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346383318] [2019-10-13 19:47:12,713 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:47:12,714 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:47:12,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:47:12,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:12,916 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2019-10-13 19:47:12,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:12,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:13,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:13,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:13,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:13,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:47:13,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:47:13,148 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346383318] [2019-10-13 19:47:13,148 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:47:13,148 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-13 19:47:13,149 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933657362] [2019-10-13 19:47:13,149 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-13 19:47:13,149 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:47:13,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-13 19:47:13,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:47:13,150 INFO L87 Difference]: Start difference. First operand 752 states and 1032 transitions. Second operand 13 states.