/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/token_ring.12.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 01:07:00,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 01:07:00,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 01:07:00,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 01:07:00,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 01:07:00,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 01:07:00,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 01:07:00,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 01:07:00,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 01:07:00,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 01:07:00,419 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 01:07:00,420 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 01:07:00,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 01:07:00,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 01:07:00,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 01:07:00,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 01:07:00,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 01:07:00,440 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 01:07:00,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 01:07:00,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 01:07:00,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 01:07:00,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 01:07:00,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 01:07:00,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 01:07:00,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 01:07:00,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 01:07:00,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 01:07:00,456 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 01:07:00,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 01:07:00,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 01:07:00,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 01:07:00,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 01:07:00,458 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 01:07:00,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 01:07:00,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 01:07:00,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 01:07:00,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 01:07:00,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 01:07:00,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 01:07:00,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 01:07:00,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 01:07:00,463 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 01:07:00,491 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 01:07:00,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 01:07:00,492 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 01:07:00,492 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 01:07:00,493 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 01:07:00,493 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 01:07:00,494 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 01:07:00,494 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 01:07:00,494 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 01:07:00,494 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 01:07:00,495 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 01:07:00,495 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 01:07:00,495 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 01:07:00,495 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 01:07:00,495 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 01:07:00,495 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 01:07:00,495 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 01:07:00,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 01:07:00,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 01:07:00,496 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 01:07:00,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 01:07:00,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:07:00,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 01:07:00,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 01:07:00,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 01:07:00,496 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 01:07:00,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 01:07:00,496 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 01:07:00,496 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 01:07:00,496 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 01:07:00,497 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 01:07:00,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 01:07:00,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 01:07:00,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 01:07:00,670 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 01:07:00,670 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 01:07:00,671 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.12.cil-2.c [2022-01-10 01:07:00,714 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d39c83789/d28cf27afb4144ec9a6eb88e9ff35f5d/FLAG3cb03bbea [2022-01-10 01:07:01,144 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 01:07:01,145 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.12.cil-2.c [2022-01-10 01:07:01,158 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d39c83789/d28cf27afb4144ec9a6eb88e9ff35f5d/FLAG3cb03bbea [2022-01-10 01:07:01,169 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d39c83789/d28cf27afb4144ec9a6eb88e9ff35f5d [2022-01-10 01:07:01,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 01:07:01,174 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 01:07:01,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 01:07:01,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 01:07:01,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 01:07:01,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:07:01" (1/1) ... [2022-01-10 01:07:01,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6109531e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:01, skipping insertion in model container [2022-01-10 01:07:01,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:07:01" (1/1) ... [2022-01-10 01:07:01,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 01:07:01,226 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 01:07:01,370 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.12.cil-2.c[671,684] [2022-01-10 01:07:01,461 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:07:01,468 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 01:07:01,475 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.12.cil-2.c[671,684] [2022-01-10 01:07:01,522 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:07:01,535 INFO L208 MainTranslator]: Completed translation [2022-01-10 01:07:01,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:01 WrapperNode [2022-01-10 01:07:01,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 01:07:01,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 01:07:01,536 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 01:07:01,536 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 01:07:01,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:01" (1/1) ... [2022-01-10 01:07:01,562 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:01" (1/1) ... [2022-01-10 01:07:01,596 INFO L137 Inliner]: procedures = 52, calls = 67, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 853 [2022-01-10 01:07:01,596 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 01:07:01,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 01:07:01,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 01:07:01,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 01:07:01,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:01" (1/1) ... [2022-01-10 01:07:01,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:01" (1/1) ... [2022-01-10 01:07:01,605 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:01" (1/1) ... [2022-01-10 01:07:01,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:01" (1/1) ... [2022-01-10 01:07:01,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:01" (1/1) ... [2022-01-10 01:07:01,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:01" (1/1) ... [2022-01-10 01:07:01,635 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:01" (1/1) ... [2022-01-10 01:07:01,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 01:07:01,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 01:07:01,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 01:07:01,640 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 01:07:01,640 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:01" (1/1) ... [2022-01-10 01:07:01,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:07:01,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:07:01,665 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 01:07:01,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 01:07:01,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 01:07:01,696 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-01-10 01:07:01,696 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-01-10 01:07:01,696 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 01:07:01,696 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 01:07:01,696 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-01-10 01:07:01,696 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-01-10 01:07:01,696 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-01-10 01:07:01,697 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-01-10 01:07:01,697 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-01-10 01:07:01,697 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-01-10 01:07:01,697 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-01-10 01:07:01,697 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-01-10 01:07:01,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 01:07:01,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 01:07:01,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 01:07:01,809 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 01:07:01,810 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 01:07:02,243 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 01:07:02,249 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 01:07:02,249 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2022-01-10 01:07:02,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:07:02 BoogieIcfgContainer [2022-01-10 01:07:02,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 01:07:02,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 01:07:02,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 01:07:02,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 01:07:02,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:07:01" (1/3) ... [2022-01-10 01:07:02,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@740fb2e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:07:02, skipping insertion in model container [2022-01-10 01:07:02,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:07:01" (2/3) ... [2022-01-10 01:07:02,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@740fb2e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:07:02, skipping insertion in model container [2022-01-10 01:07:02,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:07:02" (3/3) ... [2022-01-10 01:07:02,257 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.12.cil-2.c [2022-01-10 01:07:02,263 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 01:07:02,264 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 01:07:02,304 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 01:07:02,309 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 01:07:02,310 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 01:07:02,335 INFO L276 IsEmpty]: Start isEmpty. Operand has 382 states, 348 states have (on average 1.6637931034482758) internal successors, (579), 350 states have internal predecessors, (579), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-10 01:07:02,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 01:07:02,348 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:07:02,349 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:07:02,350 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:07:02,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:07:02,354 INFO L85 PathProgramCache]: Analyzing trace with hash -527385359, now seen corresponding path program 1 times [2022-01-10 01:07:02,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:07:02,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644990893] [2022-01-10 01:07:02,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:07:02,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:07:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:02,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:07:02,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:02,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 01:07:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:02,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-10 01:07:02,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:02,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-10 01:07:02,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:02,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-10 01:07:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:02,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:07:02,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:07:02,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644990893] [2022-01-10 01:07:02,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644990893] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:07:02,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:07:02,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:07:02,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239494374] [2022-01-10 01:07:02,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:07:02,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:07:02,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:07:02,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:07:02,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:07:02,818 INFO L87 Difference]: Start difference. First operand has 382 states, 348 states have (on average 1.6637931034482758) internal successors, (579), 350 states have internal predecessors, (579), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:07:04,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:07:04,135 INFO L93 Difference]: Finished difference Result 895 states and 1490 transitions. [2022-01-10 01:07:04,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 01:07:04,141 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 01:07:04,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:07:04,161 INFO L225 Difference]: With dead ends: 895 [2022-01-10 01:07:04,161 INFO L226 Difference]: Without dead ends: 519 [2022-01-10 01:07:04,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:07:04,171 INFO L933 BasicCegarLoop]: 660 mSDtfsCounter, 1030 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:07:04,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1054 Valid, 1057 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 01:07:04,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2022-01-10 01:07:04,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 377. [2022-01-10 01:07:04,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 344 states have (on average 1.5755813953488371) internal successors, (542), 345 states have internal predecessors, (542), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-10 01:07:04,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 594 transitions. [2022-01-10 01:07:04,266 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 594 transitions. Word has length 177 [2022-01-10 01:07:04,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:07:04,266 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 594 transitions. [2022-01-10 01:07:04,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:07:04,267 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 594 transitions. [2022-01-10 01:07:04,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 01:07:04,269 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:07:04,269 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:07:04,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 01:07:04,269 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:07:04,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:07:04,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1036164173, now seen corresponding path program 1 times [2022-01-10 01:07:04,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:07:04,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916528750] [2022-01-10 01:07:04,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:07:04,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:07:04,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:04,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:07:04,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:04,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 01:07:04,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:04,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-10 01:07:04,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:04,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-10 01:07:04,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:04,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-10 01:07:04,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:04,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:07:04,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:07:04,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916528750] [2022-01-10 01:07:04,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916528750] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:07:04,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:07:04,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:07:04,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094303315] [2022-01-10 01:07:04,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:07:04,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:07:04,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:07:04,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:07:04,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:07:04,461 INFO L87 Difference]: Start difference. First operand 377 states and 594 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:07:05,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:07:05,634 INFO L93 Difference]: Finished difference Result 878 states and 1402 transitions. [2022-01-10 01:07:05,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 01:07:05,635 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 01:07:05,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:07:05,638 INFO L225 Difference]: With dead ends: 878 [2022-01-10 01:07:05,638 INFO L226 Difference]: Without dead ends: 519 [2022-01-10 01:07:05,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:07:05,640 INFO L933 BasicCegarLoop]: 655 mSDtfsCounter, 1017 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 01:07:05,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1041 Valid, 1043 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 01:07:05,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2022-01-10 01:07:05,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 377. [2022-01-10 01:07:05,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 344 states have (on average 1.572674418604651) internal successors, (541), 345 states have internal predecessors, (541), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-10 01:07:05,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 593 transitions. [2022-01-10 01:07:05,659 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 593 transitions. Word has length 177 [2022-01-10 01:07:05,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:07:05,659 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 593 transitions. [2022-01-10 01:07:05,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:07:05,660 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 593 transitions. [2022-01-10 01:07:05,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 01:07:05,661 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:07:05,661 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:07:05,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 01:07:05,662 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:07:05,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:07:05,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1159064693, now seen corresponding path program 1 times [2022-01-10 01:07:05,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:07:05,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330001610] [2022-01-10 01:07:05,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:07:05,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:07:05,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:05,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:07:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:05,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 01:07:05,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:05,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-10 01:07:05,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:05,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-10 01:07:05,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:05,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-10 01:07:05,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:05,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:07:05,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:07:05,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330001610] [2022-01-10 01:07:05,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330001610] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:07:05,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:07:05,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 01:07:05,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595400224] [2022-01-10 01:07:05,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:07:05,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:07:05,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:07:05,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:07:05,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:07:05,792 INFO L87 Difference]: Start difference. First operand 377 states and 593 transitions. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:07:08,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:07:08,160 INFO L93 Difference]: Finished difference Result 1393 states and 2240 transitions. [2022-01-10 01:07:08,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 01:07:08,161 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 01:07:08,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:07:08,167 INFO L225 Difference]: With dead ends: 1393 [2022-01-10 01:07:08,167 INFO L226 Difference]: Without dead ends: 1036 [2022-01-10 01:07:08,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-01-10 01:07:08,174 INFO L933 BasicCegarLoop]: 707 mSDtfsCounter, 1552 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 2014 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 1649 SdHoareTripleChecker+Invalid, 2130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:07:08,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1571 Valid, 1649 Invalid, 2130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2014 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-10 01:07:08,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2022-01-10 01:07:08,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 753. [2022-01-10 01:07:08,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 692 states have (on average 1.5852601156069364) internal successors, (1097), 694 states have internal predecessors, (1097), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2022-01-10 01:07:08,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1194 transitions. [2022-01-10 01:07:08,234 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1194 transitions. Word has length 177 [2022-01-10 01:07:08,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:07:08,234 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 1194 transitions. [2022-01-10 01:07:08,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:07:08,235 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1194 transitions. [2022-01-10 01:07:08,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 01:07:08,238 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:07:08,238 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:07:08,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 01:07:08,239 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:07:08,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:07:08,239 INFO L85 PathProgramCache]: Analyzing trace with hash 283079417, now seen corresponding path program 1 times [2022-01-10 01:07:08,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:07:08,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004149245] [2022-01-10 01:07:08,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:07:08,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:07:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:08,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:07:08,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:08,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 01:07:08,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:08,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-10 01:07:08,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:08,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-10 01:07:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:08,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-10 01:07:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:08,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:07:08,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:07:08,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004149245] [2022-01-10 01:07:08,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004149245] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:07:08,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:07:08,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:07:08,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690648578] [2022-01-10 01:07:08,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:07:08,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:07:08,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:07:08,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:07:08,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:07:08,375 INFO L87 Difference]: Start difference. First operand 753 states and 1194 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:07:11,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:07:11,254 INFO L93 Difference]: Finished difference Result 2306 states and 3714 transitions. [2022-01-10 01:07:11,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 01:07:11,256 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 01:07:11,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:07:11,262 INFO L225 Difference]: With dead ends: 2306 [2022-01-10 01:07:11,262 INFO L226 Difference]: Without dead ends: 1573 [2022-01-10 01:07:11,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 01:07:11,270 INFO L933 BasicCegarLoop]: 1006 mSDtfsCounter, 1582 mSDsluCounter, 1869 mSDsCounter, 0 mSdLazyCounter, 3126 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1601 SdHoareTripleChecker+Valid, 2875 SdHoareTripleChecker+Invalid, 3202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 3126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 01:07:11,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1601 Valid, 2875 Invalid, 3202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 3126 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 01:07:11,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2022-01-10 01:07:11,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1102. [2022-01-10 01:07:11,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 1013 states have (on average 1.5784797630799605) internal successors, (1599), 1016 states have internal predecessors, (1599), 68 states have call successors, (68), 18 states have call predecessors, (68), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2022-01-10 01:07:11,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1740 transitions. [2022-01-10 01:07:11,333 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1740 transitions. Word has length 177 [2022-01-10 01:07:11,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:07:11,334 INFO L470 AbstractCegarLoop]: Abstraction has 1102 states and 1740 transitions. [2022-01-10 01:07:11,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:07:11,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1740 transitions. [2022-01-10 01:07:11,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 01:07:11,336 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:07:11,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:07:11,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 01:07:11,342 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:07:11,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:07:11,343 INFO L85 PathProgramCache]: Analyzing trace with hash -328189641, now seen corresponding path program 1 times [2022-01-10 01:07:11,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:07:11,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396006281] [2022-01-10 01:07:11,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:07:11,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:07:11,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:11,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:07:11,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:11,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 01:07:11,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:11,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-10 01:07:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:11,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-10 01:07:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:11,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-10 01:07:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:11,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:07:11,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:07:11,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396006281] [2022-01-10 01:07:11,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396006281] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:07:11,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:07:11,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:07:11,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762086474] [2022-01-10 01:07:11,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:07:11,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:07:11,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:07:11,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:07:11,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:07:11,477 INFO L87 Difference]: Start difference. First operand 1102 states and 1740 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:07:14,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:07:14,218 INFO L93 Difference]: Finished difference Result 3652 states and 5868 transitions. [2022-01-10 01:07:14,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 01:07:14,218 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 01:07:14,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:07:14,229 INFO L225 Difference]: With dead ends: 3652 [2022-01-10 01:07:14,229 INFO L226 Difference]: Without dead ends: 2570 [2022-01-10 01:07:14,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 01:07:14,233 INFO L933 BasicCegarLoop]: 751 mSDtfsCounter, 1691 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 2778 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1710 SdHoareTripleChecker+Valid, 1982 SdHoareTripleChecker+Invalid, 2893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:07:14,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1710 Valid, 1982 Invalid, 2893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 2778 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 01:07:14,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2570 states. [2022-01-10 01:07:14,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2570 to 1801. [2022-01-10 01:07:14,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1801 states, 1656 states have (on average 1.5724637681159421) internal successors, (2604), 1661 states have internal predecessors, (2604), 110 states have call successors, (110), 30 states have call predecessors, (110), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2022-01-10 01:07:14,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 2837 transitions. [2022-01-10 01:07:14,321 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 2837 transitions. Word has length 177 [2022-01-10 01:07:14,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:07:14,321 INFO L470 AbstractCegarLoop]: Abstraction has 1801 states and 2837 transitions. [2022-01-10 01:07:14,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:07:14,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 2837 transitions. [2022-01-10 01:07:14,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 01:07:14,323 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:07:14,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:07:14,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 01:07:14,323 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:07:14,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:07:14,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1733381319, now seen corresponding path program 1 times [2022-01-10 01:07:14,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:07:14,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364934490] [2022-01-10 01:07:14,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:07:14,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:07:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:14,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:07:14,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:14,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 01:07:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:14,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-10 01:07:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:14,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-10 01:07:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:14,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-10 01:07:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:14,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:07:14,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:07:14,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364934490] [2022-01-10 01:07:14,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364934490] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:07:14,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:07:14,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:07:14,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358731967] [2022-01-10 01:07:14,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:07:14,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:07:14,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:07:14,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:07:14,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:07:14,482 INFO L87 Difference]: Start difference. First operand 1801 states and 2837 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:07:17,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:07:17,374 INFO L93 Difference]: Finished difference Result 6239 states and 9981 transitions. [2022-01-10 01:07:17,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 01:07:17,375 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 01:07:17,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:07:17,391 INFO L225 Difference]: With dead ends: 6239 [2022-01-10 01:07:17,391 INFO L226 Difference]: Without dead ends: 4458 [2022-01-10 01:07:17,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 01:07:17,397 INFO L933 BasicCegarLoop]: 994 mSDtfsCounter, 1577 mSDsluCounter, 1869 mSDsCounter, 0 mSdLazyCounter, 3125 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1596 SdHoareTripleChecker+Valid, 2863 SdHoareTripleChecker+Invalid, 3206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 3125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:07:17,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1596 Valid, 2863 Invalid, 3206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 3125 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 01:07:17,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4458 states. [2022-01-10 01:07:17,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4458 to 3200. [2022-01-10 01:07:17,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3200 states, 2943 states have (on average 1.5677879714576963) internal successors, (4614), 2952 states have internal predecessors, (4614), 194 states have call successors, (194), 54 states have call predecessors, (194), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2022-01-10 01:07:17,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3200 states to 3200 states and 5037 transitions. [2022-01-10 01:07:17,610 INFO L78 Accepts]: Start accepts. Automaton has 3200 states and 5037 transitions. Word has length 177 [2022-01-10 01:07:17,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:07:17,610 INFO L470 AbstractCegarLoop]: Abstraction has 3200 states and 5037 transitions. [2022-01-10 01:07:17,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:07:17,611 INFO L276 IsEmpty]: Start isEmpty. Operand 3200 states and 5037 transitions. [2022-01-10 01:07:17,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 01:07:17,613 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:07:17,613 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:07:17,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 01:07:17,614 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:07:17,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:07:17,614 INFO L85 PathProgramCache]: Analyzing trace with hash 160952567, now seen corresponding path program 1 times [2022-01-10 01:07:17,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:07:17,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471963388] [2022-01-10 01:07:17,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:07:17,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:07:17,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:17,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:07:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:17,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 01:07:17,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:17,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-10 01:07:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:17,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-10 01:07:17,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:17,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-10 01:07:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:17,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:07:17,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:07:17,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471963388] [2022-01-10 01:07:17,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471963388] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:07:17,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:07:17,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:07:17,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042901105] [2022-01-10 01:07:17,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:07:17,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:07:17,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:07:17,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:07:17,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:07:17,741 INFO L87 Difference]: Start difference. First operand 3200 states and 5037 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:07:20,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:07:20,706 INFO L93 Difference]: Finished difference Result 11405 states and 18211 transitions. [2022-01-10 01:07:20,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 01:07:20,706 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 01:07:20,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:07:20,741 INFO L225 Difference]: With dead ends: 11405 [2022-01-10 01:07:20,741 INFO L226 Difference]: Without dead ends: 8225 [2022-01-10 01:07:20,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 01:07:20,750 INFO L933 BasicCegarLoop]: 986 mSDtfsCounter, 1572 mSDsluCounter, 1869 mSDsCounter, 0 mSdLazyCounter, 3105 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1591 SdHoareTripleChecker+Valid, 2855 SdHoareTripleChecker+Invalid, 3187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:07:20,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1591 Valid, 2855 Invalid, 3187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 3105 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 01:07:20,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8225 states. [2022-01-10 01:07:21,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8225 to 6012. [2022-01-10 01:07:21,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6012 states, 5531 states have (on average 1.5653588862773458) internal successors, (8658), 5548 states have internal predecessors, (8658), 362 states have call successors, (362), 102 states have call predecessors, (362), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2022-01-10 01:07:21,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6012 states to 6012 states and 9479 transitions. [2022-01-10 01:07:21,099 INFO L78 Accepts]: Start accepts. Automaton has 6012 states and 9479 transitions. Word has length 177 [2022-01-10 01:07:21,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:07:21,099 INFO L470 AbstractCegarLoop]: Abstraction has 6012 states and 9479 transitions. [2022-01-10 01:07:21,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:07:21,099 INFO L276 IsEmpty]: Start isEmpty. Operand 6012 states and 9479 transitions. [2022-01-10 01:07:21,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 01:07:21,102 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:07:21,102 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:07:21,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 01:07:21,103 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:07:21,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:07:21,103 INFO L85 PathProgramCache]: Analyzing trace with hash -762214859, now seen corresponding path program 1 times [2022-01-10 01:07:21,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:07:21,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347708941] [2022-01-10 01:07:21,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:07:21,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:07:21,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:21,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:07:21,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:21,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 01:07:21,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:21,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-10 01:07:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:21,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-10 01:07:21,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:21,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-10 01:07:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:21,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:07:21,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:07:21,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347708941] [2022-01-10 01:07:21,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347708941] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:07:21,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:07:21,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:07:21,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424913] [2022-01-10 01:07:21,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:07:21,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:07:21,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:07:21,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:07:21,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:07:21,222 INFO L87 Difference]: Start difference. First operand 6012 states and 9479 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:07:24,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:07:24,686 INFO L93 Difference]: Finished difference Result 21755 states and 34763 transitions. [2022-01-10 01:07:24,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 01:07:24,687 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 01:07:24,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:07:24,732 INFO L225 Difference]: With dead ends: 21755 [2022-01-10 01:07:24,733 INFO L226 Difference]: Without dead ends: 15763 [2022-01-10 01:07:24,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 01:07:24,748 INFO L933 BasicCegarLoop]: 981 mSDtfsCounter, 1571 mSDsluCounter, 1869 mSDsCounter, 0 mSdLazyCounter, 3097 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1590 SdHoareTripleChecker+Valid, 2850 SdHoareTripleChecker+Invalid, 3179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:07:24,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1590 Valid, 2850 Invalid, 3179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 3097 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 01:07:24,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15763 states. [2022-01-10 01:07:25,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15763 to 11649. [2022-01-10 01:07:25,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11649 states, 10720 states have (on average 1.5638059701492537) internal successors, (16764), 10753 states have internal predecessors, (16764), 698 states have call successors, (698), 198 states have call predecessors, (698), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2022-01-10 01:07:25,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11649 states to 11649 states and 18435 transitions. [2022-01-10 01:07:25,435 INFO L78 Accepts]: Start accepts. Automaton has 11649 states and 18435 transitions. Word has length 177 [2022-01-10 01:07:25,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:07:25,435 INFO L470 AbstractCegarLoop]: Abstraction has 11649 states and 18435 transitions. [2022-01-10 01:07:25,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:07:25,435 INFO L276 IsEmpty]: Start isEmpty. Operand 11649 states and 18435 transitions. [2022-01-10 01:07:25,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 01:07:25,440 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:07:25,441 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:07:25,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 01:07:25,441 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:07:25,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:07:25,441 INFO L85 PathProgramCache]: Analyzing trace with hash -376352457, now seen corresponding path program 1 times [2022-01-10 01:07:25,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:07:25,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990909901] [2022-01-10 01:07:25,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:07:25,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:07:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:25,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:07:25,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:25,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 01:07:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:25,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-10 01:07:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:25,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-10 01:07:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:25,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-10 01:07:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:25,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:07:25,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:07:25,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990909901] [2022-01-10 01:07:25,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990909901] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:07:25,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:07:25,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:07:25,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854043416] [2022-01-10 01:07:25,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:07:25,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:07:25,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:07:25,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:07:25,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:07:25,558 INFO L87 Difference]: Start difference. First operand 11649 states and 18435 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:07:30,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:07:30,054 INFO L93 Difference]: Finished difference Result 42454 states and 68057 transitions. [2022-01-10 01:07:30,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 01:07:30,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 01:07:30,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:07:30,147 INFO L225 Difference]: With dead ends: 42454 [2022-01-10 01:07:30,147 INFO L226 Difference]: Without dead ends: 30825 [2022-01-10 01:07:30,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 01:07:30,183 INFO L933 BasicCegarLoop]: 976 mSDtfsCounter, 1570 mSDsluCounter, 1869 mSDsCounter, 0 mSdLazyCounter, 3089 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 2845 SdHoareTripleChecker+Invalid, 3171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:07:30,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1589 Valid, 2845 Invalid, 3171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 3089 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 01:07:30,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30825 states. [2022-01-10 01:07:31,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30825 to 22954. [2022-01-10 01:07:31,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22954 states, 21129 states have (on average 1.562875668512471) internal successors, (33022), 21194 states have internal predecessors, (33022), 1370 states have call successors, (1370), 390 states have call predecessors, (1370), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2022-01-10 01:07:31,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22954 states to 22954 states and 36555 transitions. [2022-01-10 01:07:31,641 INFO L78 Accepts]: Start accepts. Automaton has 22954 states and 36555 transitions. Word has length 177 [2022-01-10 01:07:31,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:07:31,641 INFO L470 AbstractCegarLoop]: Abstraction has 22954 states and 36555 transitions. [2022-01-10 01:07:31,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:07:31,642 INFO L276 IsEmpty]: Start isEmpty. Operand 22954 states and 36555 transitions. [2022-01-10 01:07:31,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 01:07:31,654 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:07:31,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:07:31,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 01:07:31,654 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:07:31,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:07:31,657 INFO L85 PathProgramCache]: Analyzing trace with hash -640999947, now seen corresponding path program 1 times [2022-01-10 01:07:31,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:07:31,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722818295] [2022-01-10 01:07:31,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:07:31,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:07:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:31,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:07:31,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:31,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 01:07:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:31,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-10 01:07:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:31,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-10 01:07:31,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:31,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-10 01:07:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:31,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:07:31,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:07:31,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722818295] [2022-01-10 01:07:31,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722818295] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:07:31,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:07:31,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:07:31,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861071275] [2022-01-10 01:07:31,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:07:31,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:07:31,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:07:31,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:07:31,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:07:31,798 INFO L87 Difference]: Start difference. First operand 22954 states and 36555 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:07:38,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:07:38,240 INFO L93 Difference]: Finished difference Result 83853 states and 135247 transitions. [2022-01-10 01:07:38,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 01:07:38,241 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 01:07:38,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:07:38,413 INFO L225 Difference]: With dead ends: 83853 [2022-01-10 01:07:38,413 INFO L226 Difference]: Without dead ends: 60919 [2022-01-10 01:07:38,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 01:07:38,465 INFO L933 BasicCegarLoop]: 971 mSDtfsCounter, 1569 mSDsluCounter, 1869 mSDsCounter, 0 mSdLazyCounter, 3081 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 2840 SdHoareTripleChecker+Invalid, 3163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:07:38,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1588 Valid, 2840 Invalid, 3163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 3081 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 01:07:38,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60919 states. [2022-01-10 01:07:41,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60919 to 45627. [2022-01-10 01:07:41,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45627 states, 42010 states have (on average 1.562294691740062) internal successors, (65632), 42139 states have internal predecessors, (65632), 2714 states have call successors, (2714), 774 states have call predecessors, (2714), 902 states have return successors, (5029), 2841 states have call predecessors, (5029), 2714 states have call successors, (5029) [2022-01-10 01:07:41,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45627 states to 45627 states and 73375 transitions. [2022-01-10 01:07:41,272 INFO L78 Accepts]: Start accepts. Automaton has 45627 states and 73375 transitions. Word has length 177 [2022-01-10 01:07:41,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:07:41,272 INFO L470 AbstractCegarLoop]: Abstraction has 45627 states and 73375 transitions. [2022-01-10 01:07:41,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:07:41,273 INFO L276 IsEmpty]: Start isEmpty. Operand 45627 states and 73375 transitions. [2022-01-10 01:07:41,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 01:07:41,294 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:07:41,294 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:07:41,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 01:07:41,295 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:07:41,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:07:41,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1290125687, now seen corresponding path program 1 times [2022-01-10 01:07:41,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:07:41,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63083738] [2022-01-10 01:07:41,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:07:41,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:07:41,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:41,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:07:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:41,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 01:07:41,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:41,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-10 01:07:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:41,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-10 01:07:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:41,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-10 01:07:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:41,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:07:41,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:07:41,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63083738] [2022-01-10 01:07:41,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63083738] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:07:41,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:07:41,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:07:41,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601517840] [2022-01-10 01:07:41,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:07:41,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:07:41,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:07:41,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:07:41,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:07:41,424 INFO L87 Difference]: Start difference. First operand 45627 states and 73375 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:07:52,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:07:52,288 INFO L93 Difference]: Finished difference Result 166652 states and 271477 transitions. [2022-01-10 01:07:52,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 01:07:52,289 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 01:07:52,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:07:52,740 INFO L225 Difference]: With dead ends: 166652 [2022-01-10 01:07:52,740 INFO L226 Difference]: Without dead ends: 121045 [2022-01-10 01:07:52,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 01:07:52,882 INFO L933 BasicCegarLoop]: 966 mSDtfsCounter, 1568 mSDsluCounter, 1869 mSDsCounter, 0 mSdLazyCounter, 3073 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 2835 SdHoareTripleChecker+Invalid, 3155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:07:52,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1587 Valid, 2835 Invalid, 3155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 3073 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 01:07:52,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121045 states. [2022-01-10 01:07:59,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121045 to 91100. [2022-01-10 01:07:59,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91100 states, 83899 states have (on average 1.5619018105102564) internal successors, (131042), 84156 states have internal predecessors, (131042), 5402 states have call successors, (5402), 1542 states have call predecessors, (5402), 1798 states have return successors, (12219), 5657 states have call predecessors, (12219), 5402 states have call successors, (12219) [2022-01-10 01:07:59,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91100 states to 91100 states and 148663 transitions. [2022-01-10 01:07:59,631 INFO L78 Accepts]: Start accepts. Automaton has 91100 states and 148663 transitions. Word has length 177 [2022-01-10 01:07:59,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:07:59,632 INFO L470 AbstractCegarLoop]: Abstraction has 91100 states and 148663 transitions. [2022-01-10 01:07:59,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:07:59,632 INFO L276 IsEmpty]: Start isEmpty. Operand 91100 states and 148663 transitions. [2022-01-10 01:07:59,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 01:07:59,670 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:07:59,670 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:07:59,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 01:07:59,670 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:07:59,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:07:59,671 INFO L85 PathProgramCache]: Analyzing trace with hash -33053259, now seen corresponding path program 1 times [2022-01-10 01:07:59,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:07:59,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100631953] [2022-01-10 01:07:59,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:07:59,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:07:59,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:59,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-01-10 01:07:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:59,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-10 01:07:59,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:59,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-01-10 01:07:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:59,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-10 01:07:59,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:59,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-01-10 01:07:59,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:07:59,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:07:59,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:07:59,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100631953] [2022-01-10 01:07:59,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100631953] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:07:59,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:07:59,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:07:59,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557386773] [2022-01-10 01:07:59,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:07:59,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:07:59,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:07:59,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:07:59,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:07:59,784 INFO L87 Difference]: Start difference. First operand 91100 states and 148663 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)