/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 15:04:57,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:04:57,376 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:04:57,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 15:04:57,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 15:04:57,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 15:04:57,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 15:04:57,404 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 15:04:57,406 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 15:04:57,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 15:04:57,408 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 15:04:57,409 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 15:04:57,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:04:57,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:04:57,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:04:57,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:04:57,413 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:04:57,414 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:04:57,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:04:57,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:04:57,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:04:57,421 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:04:57,422 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:04:57,423 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:04:57,425 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 15:04:57,426 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 15:04:57,426 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 15:04:57,427 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 15:04:57,427 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 15:04:57,428 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 15:04:57,428 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 15:04:57,429 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 15:04:57,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 15:04:57,431 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 15:04:57,432 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 15:04:57,432 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 15:04:57,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 15:04:57,433 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 15:04:57,433 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 15:04:57,434 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 15:04:57,435 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 15:04:57,435 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 15:04:57,458 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:04:57,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:04:57,459 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:04:57,459 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:04:57,460 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:04:57,460 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:04:57,460 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 15:04:57,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:04:57,460 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 15:04:57,461 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:04:57,461 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:04:57,461 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:04:57,461 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:04:57,461 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 15:04:57,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:04:57,462 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:04:57,462 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:04:57,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:04:57,462 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:04:57,462 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:04:57,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:04:57,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:04:57,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:04:57,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:04:57,463 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:04:57,464 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:04:57,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:04:57,464 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:04:57,464 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:04:57,464 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> interpolation-heuristic=FIRST;log-additional-information=true; [2020-08-21 15:04:57,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:04:57,762 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:04:57,766 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:04:57,768 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:04:57,768 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:04:57,769 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2020-08-21 15:04:57,853 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c852a6c91/363e9dc18b8d413ba9a20040f86a851c/FLAG28e6c3467 [2020-08-21 15:04:58,405 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:04:58,406 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2020-08-21 15:04:58,419 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c852a6c91/363e9dc18b8d413ba9a20040f86a851c/FLAG28e6c3467 [2020-08-21 15:04:58,784 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c852a6c91/363e9dc18b8d413ba9a20040f86a851c [2020-08-21 15:04:58,792 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:04:58,794 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:04:58,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:04:58,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:04:58,800 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:04:58,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:04:58" (1/1) ... [2020-08-21 15:04:58,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68320178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:04:58, skipping insertion in model container [2020-08-21 15:04:58,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:04:58" (1/1) ... [2020-08-21 15:04:58,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:04:58,881 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:04:59,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:04:59,283 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:04:59,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:04:59,378 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:04:59,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:04:59 WrapperNode [2020-08-21 15:04:59,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:04:59,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:04:59,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:04:59,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:04:59,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:04:59" (1/1) ... [2020-08-21 15:04:59,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:04:59" (1/1) ... [2020-08-21 15:04:59,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:04:59" (1/1) ... [2020-08-21 15:04:59,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:04:59" (1/1) ... [2020-08-21 15:04:59,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:04:59" (1/1) ... [2020-08-21 15:04:59,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:04:59" (1/1) ... [2020-08-21 15:04:59,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:04:59" (1/1) ... [2020-08-21 15:04:59,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:04:59,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:04:59,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:04:59,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:04:59,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:04:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:04:59,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:04:59,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:04:59,544 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 15:04:59,545 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side1_failed_history [2020-08-21 15:04:59,545 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2020-08-21 15:04:59,545 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side2_failed_history [2020-08-21 15:04:59,545 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2020-08-21 15:04:59,545 INFO L138 BoogieDeclarations]: Found implementation of procedure write_active_side_history [2020-08-21 15:04:59,545 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2020-08-21 15:04:59,546 INFO L138 BoogieDeclarations]: Found implementation of procedure write_manual_selection_history [2020-08-21 15:04:59,549 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2020-08-21 15:04:59,549 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-08-21 15:04:59,549 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2020-08-21 15:04:59,549 INFO L138 BoogieDeclarations]: Found implementation of procedure Console_task_each_pals_period [2020-08-21 15:04:59,550 INFO L138 BoogieDeclarations]: Found implementation of procedure Side1_activestandby_task_each_pals_period [2020-08-21 15:04:59,550 INFO L138 BoogieDeclarations]: Found implementation of procedure Side2_activestandby_task_each_pals_period [2020-08-21 15:04:59,550 INFO L138 BoogieDeclarations]: Found implementation of procedure Pendulum_prism_task_each_pals_period [2020-08-21 15:04:59,550 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-08-21 15:04:59,550 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:04:59,550 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-08-21 15:04:59,551 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:04:59,551 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-21 15:04:59,551 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-21 15:04:59,551 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-21 15:04:59,551 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-21 15:04:59,551 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-21 15:04:59,552 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 15:04:59,555 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 15:04:59,555 INFO L130 BoogieDeclarations]: Found specification of procedure write_side1_failed_history [2020-08-21 15:04:59,555 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2020-08-21 15:04:59,555 INFO L130 BoogieDeclarations]: Found specification of procedure write_side2_failed_history [2020-08-21 15:04:59,555 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2020-08-21 15:04:59,555 INFO L130 BoogieDeclarations]: Found specification of procedure write_active_side_history [2020-08-21 15:04:59,556 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2020-08-21 15:04:59,556 INFO L130 BoogieDeclarations]: Found specification of procedure write_manual_selection_history [2020-08-21 15:04:59,556 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2020-08-21 15:04:59,556 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-21 15:04:59,556 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2020-08-21 15:04:59,556 INFO L130 BoogieDeclarations]: Found specification of procedure Console_task_each_pals_period [2020-08-21 15:04:59,556 INFO L130 BoogieDeclarations]: Found specification of procedure Side1_activestandby_task_each_pals_period [2020-08-21 15:04:59,556 INFO L130 BoogieDeclarations]: Found specification of procedure Side2_activestandby_task_each_pals_period [2020-08-21 15:04:59,556 INFO L130 BoogieDeclarations]: Found specification of procedure Pendulum_prism_task_each_pals_period [2020-08-21 15:04:59,557 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-21 15:04:59,557 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:04:59,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:04:59,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:05:00,489 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:05:00,489 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-21 15:05:00,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:05:00 BoogieIcfgContainer [2020-08-21 15:05:00,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:05:00,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:05:00,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:05:00,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:05:00,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:04:58" (1/3) ... [2020-08-21 15:05:00,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@684f313f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:05:00, skipping insertion in model container [2020-08-21 15:05:00,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:04:59" (2/3) ... [2020-08-21 15:05:00,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@684f313f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:05:00, skipping insertion in model container [2020-08-21 15:05:00,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:05:00" (3/3) ... [2020-08-21 15:05:00,505 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2020-08-21 15:05:00,515 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:05:00,524 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 15:05:00,538 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 15:05:00,566 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:05:00,566 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:05:00,566 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:05:00,567 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:05:00,567 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:05:00,567 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:05:00,567 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:05:00,568 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:05:00,594 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2020-08-21 15:05:00,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-21 15:05:00,605 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:05:00,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:05:00,607 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:05:00,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:05:00,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1549655252, now seen corresponding path program 1 times [2020-08-21 15:05:00,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:05:00,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826045068] [2020-08-21 15:05:00,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:05:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:01,171 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 15:05:01,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:05:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:01,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:05:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:01,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 15:05:01,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:01,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:05:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:01,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:01,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 15:05:01,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:01,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:01,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:01,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 15:05:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:01,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:01,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:05:01,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826045068] [2020-08-21 15:05:01,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:05:01,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 15:05:01,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643285064] [2020-08-21 15:05:01,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 15:05:01,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:05:01,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 15:05:01,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-21 15:05:01,513 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 9 states. [2020-08-21 15:05:03,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:05:03,131 INFO L93 Difference]: Finished difference Result 456 states and 705 transitions. [2020-08-21 15:05:03,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 15:05:03,135 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-08-21 15:05:03,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:05:03,161 INFO L225 Difference]: With dead ends: 456 [2020-08-21 15:05:03,161 INFO L226 Difference]: Without dead ends: 237 [2020-08-21 15:05:03,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2020-08-21 15:05:03,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-08-21 15:05:03,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2020-08-21 15:05:03,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-08-21 15:05:03,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 342 transitions. [2020-08-21 15:05:03,263 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 342 transitions. Word has length 71 [2020-08-21 15:05:03,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:05:03,263 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 342 transitions. [2020-08-21 15:05:03,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 15:05:03,264 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 342 transitions. [2020-08-21 15:05:03,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-21 15:05:03,268 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:05:03,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:05:03,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:05:03,269 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:05:03,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:05:03,269 INFO L82 PathProgramCache]: Analyzing trace with hash 695502060, now seen corresponding path program 1 times [2020-08-21 15:05:03,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:05:03,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614705035] [2020-08-21 15:05:03,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:05:03,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:03,511 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 15:05:03,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:05:03,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:03,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:05:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:03,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 15:05:03,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:03,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:05:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:03,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:03,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 15:05:03,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:03,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:03,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 15:05:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:03,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:03,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:03,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:05:03,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614705035] [2020-08-21 15:05:03,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:05:03,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-21 15:05:03,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787554378] [2020-08-21 15:05:03,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 15:05:03,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:05:03,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 15:05:03,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-21 15:05:03,830 INFO L87 Difference]: Start difference. First operand 237 states and 342 transitions. Second operand 14 states. [2020-08-21 15:05:04,002 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-21 15:05:04,223 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-21 15:05:04,380 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 15:05:06,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:05:06,779 INFO L93 Difference]: Finished difference Result 455 states and 653 transitions. [2020-08-21 15:05:06,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 15:05:06,779 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 71 [2020-08-21 15:05:06,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:05:06,783 INFO L225 Difference]: With dead ends: 455 [2020-08-21 15:05:06,783 INFO L226 Difference]: Without dead ends: 237 [2020-08-21 15:05:06,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-08-21 15:05:06,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-08-21 15:05:06,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2020-08-21 15:05:06,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-08-21 15:05:06,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 330 transitions. [2020-08-21 15:05:06,824 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 330 transitions. Word has length 71 [2020-08-21 15:05:06,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:05:06,824 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 330 transitions. [2020-08-21 15:05:06,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 15:05:06,825 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 330 transitions. [2020-08-21 15:05:06,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-21 15:05:06,827 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:05:06,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:05:06,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 15:05:06,828 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:05:06,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:05:06,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1333871800, now seen corresponding path program 1 times [2020-08-21 15:05:06,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:05:06,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129039874] [2020-08-21 15:05:06,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:05:06,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:07,141 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 15:05:07,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:05:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:07,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:05:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:07,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:05:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:07,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 15:05:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:07,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:07,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 15:05:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:07,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:07,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 15:05:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:07,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:07,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:05:07,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129039874] [2020-08-21 15:05:07,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:05:07,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 15:05:07,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885910318] [2020-08-21 15:05:07,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 15:05:07,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:05:07,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 15:05:07,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-08-21 15:05:07,342 INFO L87 Difference]: Start difference. First operand 237 states and 330 transitions. Second operand 11 states. [2020-08-21 15:05:08,271 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-21 15:05:08,427 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-21 15:05:09,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:05:09,514 INFO L93 Difference]: Finished difference Result 454 states and 645 transitions. [2020-08-21 15:05:09,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 15:05:09,517 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 82 [2020-08-21 15:05:09,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:05:09,521 INFO L225 Difference]: With dead ends: 454 [2020-08-21 15:05:09,521 INFO L226 Difference]: Without dead ends: 241 [2020-08-21 15:05:09,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2020-08-21 15:05:09,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-08-21 15:05:09,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2020-08-21 15:05:09,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-08-21 15:05:09,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 333 transitions. [2020-08-21 15:05:09,561 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 333 transitions. Word has length 82 [2020-08-21 15:05:09,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:05:09,562 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 333 transitions. [2020-08-21 15:05:09,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 15:05:09,562 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 333 transitions. [2020-08-21 15:05:09,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-21 15:05:09,567 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:05:09,568 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:05:09,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 15:05:09,568 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:05:09,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:05:09,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1250466386, now seen corresponding path program 1 times [2020-08-21 15:05:09,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:05:09,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144865747] [2020-08-21 15:05:09,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:05:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:09,902 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 15:05:09,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:05:09,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:09,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:05:09,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:09,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:05:09,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:09,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 15:05:09,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:09,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:09,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:09,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 15:05:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:10,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:10,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:10,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 15:05:10,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:10,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:10,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 15:05:10,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:10,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:10,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:10,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-21 15:05:10,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:10,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 15:05:10,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:10,204 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 15:05:10,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144865747] [2020-08-21 15:05:10,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:05:10,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-08-21 15:05:10,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808318898] [2020-08-21 15:05:10,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 15:05:10,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:05:10,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 15:05:10,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-08-21 15:05:10,207 INFO L87 Difference]: Start difference. First operand 241 states and 333 transitions. Second operand 16 states. [2020-08-21 15:05:10,384 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 15:05:12,252 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-21 15:05:14,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:05:14,073 INFO L93 Difference]: Finished difference Result 549 states and 758 transitions. [2020-08-21 15:05:14,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-21 15:05:14,073 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 104 [2020-08-21 15:05:14,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:05:14,080 INFO L225 Difference]: With dead ends: 549 [2020-08-21 15:05:14,080 INFO L226 Difference]: Without dead ends: 332 [2020-08-21 15:05:14,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2020-08-21 15:05:14,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-08-21 15:05:14,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 331. [2020-08-21 15:05:14,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-08-21 15:05:14,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 448 transitions. [2020-08-21 15:05:14,130 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 448 transitions. Word has length 104 [2020-08-21 15:05:14,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:05:14,131 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 448 transitions. [2020-08-21 15:05:14,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 15:05:14,131 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 448 transitions. [2020-08-21 15:05:14,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-08-21 15:05:14,133 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:05:14,134 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:05:14,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 15:05:14,134 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:05:14,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:05:14,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1479117531, now seen corresponding path program 1 times [2020-08-21 15:05:14,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:05:14,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343312456] [2020-08-21 15:05:14,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:05:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:14,318 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 15:05:14,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:05:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:14,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:05:14,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:14,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:05:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:14,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 15:05:14,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:14,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:14,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 15:05:14,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:14,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:14,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:14,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 15:05:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:14,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:14,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 15:05:14,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:14,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:14,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:05:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:14,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 15:05:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:14,699 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 15:05:14,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343312456] [2020-08-21 15:05:14,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:05:14,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-08-21 15:05:14,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828804687] [2020-08-21 15:05:14,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 15:05:14,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:05:14,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 15:05:14,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-08-21 15:05:14,702 INFO L87 Difference]: Start difference. First operand 331 states and 448 transitions. Second operand 16 states. [2020-08-21 15:05:14,873 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-08-21 15:05:16,572 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-21 15:05:18,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:05:18,265 INFO L93 Difference]: Finished difference Result 555 states and 766 transitions. [2020-08-21 15:05:18,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-21 15:05:18,266 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 105 [2020-08-21 15:05:18,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:05:18,270 INFO L225 Difference]: With dead ends: 555 [2020-08-21 15:05:18,270 INFO L226 Difference]: Without dead ends: 335 [2020-08-21 15:05:18,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2020-08-21 15:05:18,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-08-21 15:05:18,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 331. [2020-08-21 15:05:18,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-08-21 15:05:18,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 448 transitions. [2020-08-21 15:05:18,311 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 448 transitions. Word has length 105 [2020-08-21 15:05:18,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:05:18,312 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 448 transitions. [2020-08-21 15:05:18,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 15:05:18,313 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 448 transitions. [2020-08-21 15:05:18,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-21 15:05:18,314 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:05:18,315 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:05:18,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 15:05:18,315 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:05:18,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:05:18,315 INFO L82 PathProgramCache]: Analyzing trace with hash -717194829, now seen corresponding path program 1 times [2020-08-21 15:05:18,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:05:18,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305013430] [2020-08-21 15:05:18,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:05:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:18,514 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 15:05:18,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:05:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:18,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:05:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:18,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:05:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:18,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 15:05:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:18,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:18,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 15:05:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:18,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:18,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 15:05:18,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:18,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:18,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 15:05:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:18,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:18,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:18,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 15:05:18,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:18,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 15:05:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:18,755 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 15:05:18,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305013430] [2020-08-21 15:05:18,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:05:18,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 15:05:18,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005174057] [2020-08-21 15:05:18,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 15:05:18,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:05:18,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 15:05:18,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-21 15:05:18,758 INFO L87 Difference]: Start difference. First operand 331 states and 448 transitions. Second operand 12 states. [2020-08-21 15:05:19,435 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-21 15:05:22,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:05:22,045 INFO L93 Difference]: Finished difference Result 788 states and 1093 transitions. [2020-08-21 15:05:22,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 15:05:22,045 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 107 [2020-08-21 15:05:22,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:05:22,050 INFO L225 Difference]: With dead ends: 788 [2020-08-21 15:05:22,050 INFO L226 Difference]: Without dead ends: 568 [2020-08-21 15:05:22,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-21 15:05:22,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2020-08-21 15:05:22,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 551. [2020-08-21 15:05:22,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 551 states. [2020-08-21 15:05:22,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 759 transitions. [2020-08-21 15:05:22,128 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 759 transitions. Word has length 107 [2020-08-21 15:05:22,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:05:22,128 INFO L479 AbstractCegarLoop]: Abstraction has 551 states and 759 transitions. [2020-08-21 15:05:22,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 15:05:22,129 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 759 transitions. [2020-08-21 15:05:22,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-21 15:05:22,130 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:05:22,130 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:05:22,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 15:05:22,131 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:05:22,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:05:22,131 INFO L82 PathProgramCache]: Analyzing trace with hash 654438841, now seen corresponding path program 1 times [2020-08-21 15:05:22,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:05:22,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000490058] [2020-08-21 15:05:22,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:05:22,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:22,297 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 15:05:22,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:05:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:22,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:05:22,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:22,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:05:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:22,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 15:05:22,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:22,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:22,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 15:05:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:22,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:22,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 15:05:22,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:22,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:22,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:22,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 15:05:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:22,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:22,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:22,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 15:05:22,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:22,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 15:05:22,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:22,553 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 15:05:22,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000490058] [2020-08-21 15:05:22,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:05:22,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 15:05:22,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899586179] [2020-08-21 15:05:22,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 15:05:22,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:05:22,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 15:05:22,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-21 15:05:22,556 INFO L87 Difference]: Start difference. First operand 551 states and 759 transitions. Second operand 12 states. [2020-08-21 15:05:23,842 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-21 15:05:26,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:05:26,440 INFO L93 Difference]: Finished difference Result 1308 states and 1846 transitions. [2020-08-21 15:05:26,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 15:05:26,441 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-08-21 15:05:26,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:05:26,450 INFO L225 Difference]: With dead ends: 1308 [2020-08-21 15:05:26,450 INFO L226 Difference]: Without dead ends: 911 [2020-08-21 15:05:26,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-21 15:05:26,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2020-08-21 15:05:26,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 905. [2020-08-21 15:05:26,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 905 states. [2020-08-21 15:05:26,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1266 transitions. [2020-08-21 15:05:26,576 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1266 transitions. Word has length 108 [2020-08-21 15:05:26,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:05:26,577 INFO L479 AbstractCegarLoop]: Abstraction has 905 states and 1266 transitions. [2020-08-21 15:05:26,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 15:05:26,577 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1266 transitions. [2020-08-21 15:05:26,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-21 15:05:26,579 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:05:26,580 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:05:26,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 15:05:26,581 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:05:26,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:05:26,582 INFO L82 PathProgramCache]: Analyzing trace with hash 925446042, now seen corresponding path program 1 times [2020-08-21 15:05:26,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:05:26,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803067895] [2020-08-21 15:05:26,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:05:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:26,777 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 15:05:26,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:05:26,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:26,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:05:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:26,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:05:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:26,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 15:05:26,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:26,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:26,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 15:05:26,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:26,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:26,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:26,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 15:05:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:26,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:26,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-21 15:05:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:26,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:26,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:26,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 15:05:26,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:26,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-21 15:05:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:27,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 15:05:27,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803067895] [2020-08-21 15:05:27,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:05:27,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 15:05:27,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585799120] [2020-08-21 15:05:27,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 15:05:27,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:05:27,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 15:05:27,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-21 15:05:27,013 INFO L87 Difference]: Start difference. First operand 905 states and 1266 transitions. Second operand 12 states. [2020-08-21 15:05:27,160 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-21 15:05:30,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:05:30,670 INFO L93 Difference]: Finished difference Result 1649 states and 2335 transitions. [2020-08-21 15:05:30,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 15:05:30,674 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 109 [2020-08-21 15:05:30,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:05:30,680 INFO L225 Difference]: With dead ends: 1649 [2020-08-21 15:05:30,681 INFO L226 Difference]: Without dead ends: 916 [2020-08-21 15:05:30,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-21 15:05:30,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2020-08-21 15:05:30,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 910. [2020-08-21 15:05:30,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 910 states. [2020-08-21 15:05:30,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1268 transitions. [2020-08-21 15:05:30,795 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1268 transitions. Word has length 109 [2020-08-21 15:05:30,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:05:30,795 INFO L479 AbstractCegarLoop]: Abstraction has 910 states and 1268 transitions. [2020-08-21 15:05:30,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 15:05:30,795 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1268 transitions. [2020-08-21 15:05:30,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-21 15:05:30,798 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:05:30,798 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:05:30,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 15:05:30,798 INFO L427 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:05:30,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:05:30,799 INFO L82 PathProgramCache]: Analyzing trace with hash -625424837, now seen corresponding path program 1 times [2020-08-21 15:05:30,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:05:30,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731803144] [2020-08-21 15:05:30,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:05:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:31,022 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 15:05:31,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:05:31,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:31,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:05:31,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:31,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:05:31,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:31,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 15:05:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:31,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:31,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 15:05:31,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:31,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:31,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 15:05:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:31,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:31,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 15:05:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:31,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:31,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:31,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 15:05:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:31,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 15:05:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:31,233 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 15:05:31,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731803144] [2020-08-21 15:05:31,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:05:31,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-21 15:05:31,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952723830] [2020-08-21 15:05:31,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 15:05:31,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:05:31,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 15:05:31,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-21 15:05:31,235 INFO L87 Difference]: Start difference. First operand 910 states and 1268 transitions. Second operand 13 states. [2020-08-21 15:05:32,637 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-21 15:05:32,785 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-21 15:05:33,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:05:33,759 INFO L93 Difference]: Finished difference Result 1663 states and 2354 transitions. [2020-08-21 15:05:33,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 15:05:33,760 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 108 [2020-08-21 15:05:33,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:05:33,766 INFO L225 Difference]: With dead ends: 1663 [2020-08-21 15:05:33,766 INFO L226 Difference]: Without dead ends: 930 [2020-08-21 15:05:33,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-21 15:05:33,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2020-08-21 15:05:33,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 930. [2020-08-21 15:05:33,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 930 states. [2020-08-21 15:05:33,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1284 transitions. [2020-08-21 15:05:33,877 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1284 transitions. Word has length 108 [2020-08-21 15:05:33,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:05:33,878 INFO L479 AbstractCegarLoop]: Abstraction has 930 states and 1284 transitions. [2020-08-21 15:05:33,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 15:05:33,878 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1284 transitions. [2020-08-21 15:05:33,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-08-21 15:05:33,882 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:05:33,883 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:05:33,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 15:05:33,883 INFO L427 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:05:33,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:05:33,883 INFO L82 PathProgramCache]: Analyzing trace with hash 442586826, now seen corresponding path program 1 times [2020-08-21 15:05:33,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:05:33,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789849510] [2020-08-21 15:05:33,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:05:33,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:34,082 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 15:05:34,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:05:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:34,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:05:34,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:34,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:05:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:34,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 15:05:34,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:34,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:34,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:34,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 15:05:34,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:34,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:34,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:34,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-21 15:05:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:34,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:34,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-21 15:05:34,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:34,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:34,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 15:05:34,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:34,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-21 15:05:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:34,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 15:05:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:34,433 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 15:05:34,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789849510] [2020-08-21 15:05:34,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:05:34,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 15:05:34,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138805589] [2020-08-21 15:05:34,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 15:05:34,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:05:34,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 15:05:34,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-21 15:05:34,437 INFO L87 Difference]: Start difference. First operand 930 states and 1284 transitions. Second operand 12 states. [2020-08-21 15:05:34,666 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-21 15:05:38,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:05:38,389 INFO L93 Difference]: Finished difference Result 1715 states and 2391 transitions. [2020-08-21 15:05:38,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 15:05:38,390 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 117 [2020-08-21 15:05:38,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:05:38,396 INFO L225 Difference]: With dead ends: 1715 [2020-08-21 15:05:38,396 INFO L226 Difference]: Without dead ends: 962 [2020-08-21 15:05:38,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2020-08-21 15:05:38,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2020-08-21 15:05:38,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 930. [2020-08-21 15:05:38,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 930 states. [2020-08-21 15:05:38,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1280 transitions. [2020-08-21 15:05:38,531 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1280 transitions. Word has length 117 [2020-08-21 15:05:38,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:05:38,532 INFO L479 AbstractCegarLoop]: Abstraction has 930 states and 1280 transitions. [2020-08-21 15:05:38,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 15:05:38,532 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1280 transitions. [2020-08-21 15:05:38,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-08-21 15:05:38,536 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:05:38,537 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:05:38,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 15:05:38,537 INFO L427 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:05:38,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:05:38,537 INFO L82 PathProgramCache]: Analyzing trace with hash -208311273, now seen corresponding path program 1 times [2020-08-21 15:05:38,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:05:38,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672076875] [2020-08-21 15:05:38,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:05:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:38,785 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 15:05:38,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:05:38,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:38,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:05:38,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:38,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:05:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:38,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 15:05:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:38,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:38,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 15:05:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:38,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:38,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:38,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 15:05:38,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:38,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:38,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:38,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 15:05:38,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:38,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:38,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 15:05:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:38,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 15:05:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:38,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 15:05:38,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:39,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 15:05:39,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672076875] [2020-08-21 15:05:39,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:05:39,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-21 15:05:39,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101537519] [2020-08-21 15:05:39,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 15:05:39,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:05:39,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 15:05:39,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-21 15:05:39,013 INFO L87 Difference]: Start difference. First operand 930 states and 1280 transitions. Second operand 13 states. [2020-08-21 15:05:40,556 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-21 15:05:40,694 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-21 15:05:41,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:05:41,603 INFO L93 Difference]: Finished difference Result 1703 states and 2388 transitions. [2020-08-21 15:05:41,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 15:05:41,603 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 116 [2020-08-21 15:05:41,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:05:41,609 INFO L225 Difference]: With dead ends: 1703 [2020-08-21 15:05:41,609 INFO L226 Difference]: Without dead ends: 950 [2020-08-21 15:05:41,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-21 15:05:41,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2020-08-21 15:05:41,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 950. [2020-08-21 15:05:41,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-08-21 15:05:41,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1296 transitions. [2020-08-21 15:05:41,709 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1296 transitions. Word has length 116 [2020-08-21 15:05:41,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:05:41,709 INFO L479 AbstractCegarLoop]: Abstraction has 950 states and 1296 transitions. [2020-08-21 15:05:41,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 15:05:41,709 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1296 transitions. [2020-08-21 15:05:41,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-08-21 15:05:41,712 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:05:41,712 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:05:41,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 15:05:41,712 INFO L427 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:05:41,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:05:41,713 INFO L82 PathProgramCache]: Analyzing trace with hash -2072056031, now seen corresponding path program 1 times [2020-08-21 15:05:41,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:05:41,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751557949] [2020-08-21 15:05:41,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:05:41,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:41,948 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 15:05:41,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:05:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:41,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:05:41,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:41,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:05:41,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:41,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 15:05:41,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:42,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:42,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 15:05:42,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:42,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:42,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 15:05:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:42,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:42,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 15:05:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:42,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:42,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 15:05:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:42,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 15:05:42,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:42,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 15:05:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:42,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 15:05:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:42,209 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 15:05:42,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751557949] [2020-08-21 15:05:42,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:05:42,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-21 15:05:42,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540056777] [2020-08-21 15:05:42,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 15:05:42,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:05:42,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 15:05:42,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-21 15:05:42,214 INFO L87 Difference]: Start difference. First operand 950 states and 1296 transitions. Second operand 13 states. [2020-08-21 15:05:43,709 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-21 15:05:43,841 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-08-21 15:05:44,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:05:44,579 INFO L93 Difference]: Finished difference Result 1739 states and 2404 transitions. [2020-08-21 15:05:44,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 15:05:44,580 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 124 [2020-08-21 15:05:44,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:05:44,585 INFO L225 Difference]: With dead ends: 1739 [2020-08-21 15:05:44,586 INFO L226 Difference]: Without dead ends: 966 [2020-08-21 15:05:44,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2020-08-21 15:05:44,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2020-08-21 15:05:44,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 966. [2020-08-21 15:05:44,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2020-08-21 15:05:44,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1308 transitions. [2020-08-21 15:05:44,684 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1308 transitions. Word has length 124 [2020-08-21 15:05:44,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:05:44,685 INFO L479 AbstractCegarLoop]: Abstraction has 966 states and 1308 transitions. [2020-08-21 15:05:44,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 15:05:44,685 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1308 transitions. [2020-08-21 15:05:44,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-08-21 15:05:44,687 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:05:44,688 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:05:44,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 15:05:44,688 INFO L427 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:05:44,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:05:44,688 INFO L82 PathProgramCache]: Analyzing trace with hash 689076351, now seen corresponding path program 1 times [2020-08-21 15:05:44,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:05:44,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984462997] [2020-08-21 15:05:44,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:05:44,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:44,874 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 15:05:44,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:05:44,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:44,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:05:44,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:44,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:05:44,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:44,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 15:05:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:44,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:44,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 15:05:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:45,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:45,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:45,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 15:05:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:45,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:45,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 15:05:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:45,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:45,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 15:05:45,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:45,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 15:05:45,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:45,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 15:05:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:45,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 15:05:45,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:45,201 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-21 15:05:45,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984462997] [2020-08-21 15:05:45,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:05:45,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-08-21 15:05:45,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299777145] [2020-08-21 15:05:45,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-21 15:05:45,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:05:45,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-21 15:05:45,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-08-21 15:05:45,204 INFO L87 Difference]: Start difference. First operand 966 states and 1308 transitions. Second operand 18 states. [2020-08-21 15:05:45,513 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 133 [2020-08-21 15:05:45,681 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-21 15:05:46,088 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-21 15:05:47,549 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-21 15:05:47,695 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-21 15:05:47,833 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-08-21 15:05:49,382 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-08-21 15:05:49,530 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-08-21 15:05:51,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:05:51,847 INFO L93 Difference]: Finished difference Result 2593 states and 3617 transitions. [2020-08-21 15:05:51,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-21 15:05:51,848 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 124 [2020-08-21 15:05:51,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:05:51,865 INFO L225 Difference]: With dead ends: 2593 [2020-08-21 15:05:51,866 INFO L226 Difference]: Without dead ends: 1792 [2020-08-21 15:05:51,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=410, Invalid=1230, Unknown=0, NotChecked=0, Total=1640 [2020-08-21 15:05:51,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1792 states. [2020-08-21 15:05:52,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1792 to 1552. [2020-08-21 15:05:52,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1552 states. [2020-08-21 15:05:52,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 2122 transitions. [2020-08-21 15:05:52,151 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 2122 transitions. Word has length 124 [2020-08-21 15:05:52,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:05:52,152 INFO L479 AbstractCegarLoop]: Abstraction has 1552 states and 2122 transitions. [2020-08-21 15:05:52,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-21 15:05:52,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 2122 transitions. [2020-08-21 15:05:52,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-08-21 15:05:52,156 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:05:52,157 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:05:52,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 15:05:52,157 INFO L427 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:05:52,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:05:52,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1938608124, now seen corresponding path program 1 times [2020-08-21 15:05:52,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:05:52,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215090731] [2020-08-21 15:05:52,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:05:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:52,465 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-08-21 15:05:52,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:05:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:52,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:05:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:52,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 15:05:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:52,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 15:05:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:52,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:52,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 15:05:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:52,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:52,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 15:05:52,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:52,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:52,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:52,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 15:05:52,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:52,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:05:52,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:52,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-21 15:05:52,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:52,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-21 15:05:52,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:52,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 15:05:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:52,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 15:05:52,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:52,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-21 15:05:52,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:05:52,801 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-21 15:05:52,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215090731] [2020-08-21 15:05:52,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:05:52,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-21 15:05:52,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892157483] [2020-08-21 15:05:52,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 15:05:52,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:05:52,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 15:05:52,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-08-21 15:05:52,804 INFO L87 Difference]: Start difference. First operand 1552 states and 2122 transitions. Second operand 13 states.