./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 35b23af90f01e46e9f818578c532dc01a817e343291a24c8592db5f0da05a3c7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:44:32,173 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:44:32,294 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:44:32,299 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:44:32,300 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:44:32,327 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:44:32,327 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:44:32,328 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:44:32,329 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:44:32,330 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:44:32,331 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:44:32,331 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:44:32,332 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:44:32,333 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:44:32,333 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:44:32,334 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:44:32,334 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:44:32,335 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:44:32,336 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:44:32,336 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:44:32,337 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:44:32,337 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:44:32,338 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:44:32,339 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:44:32,339 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:44:32,340 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:44:32,340 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:44:32,340 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:44:32,341 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:44:32,341 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:44:32,342 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:44:32,342 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:44:32,343 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:44:32,343 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:44:32,344 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:44:32,344 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:44:32,345 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:44:32,345 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:44:32,345 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:44:32,346 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 35b23af90f01e46e9f818578c532dc01a817e343291a24c8592db5f0da05a3c7 [2023-11-06 22:44:32,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:44:32,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:44:32,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:44:32,759 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:44:32,760 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:44:32,761 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c [2023-11-06 22:44:36,126 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:44:36,427 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:44:36,428 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c [2023-11-06 22:44:36,443 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/data/b13faa568/f75adaf34352493cafc360ebc309c21e/FLAG5c07bcc83 [2023-11-06 22:44:36,460 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/data/b13faa568/f75adaf34352493cafc360ebc309c21e [2023-11-06 22:44:36,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:44:36,465 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:44:36,467 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:44:36,467 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:44:36,474 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:44:36,475 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:36" (1/1) ... [2023-11-06 22:44:36,476 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6240b054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:36, skipping insertion in model container [2023-11-06 22:44:36,476 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:44:36" (1/1) ... [2023-11-06 22:44:36,528 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:44:36,823 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c[12042,12055] [2023-11-06 22:44:36,828 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:44:36,850 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:44:36,922 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c[12042,12055] [2023-11-06 22:44:36,923 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:44:36,947 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:44:36,948 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:36 WrapperNode [2023-11-06 22:44:36,948 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:44:36,950 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:44:36,950 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:44:36,950 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:44:36,959 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:36" (1/1) ... [2023-11-06 22:44:36,998 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:36" (1/1) ... [2023-11-06 22:44:37,050 INFO L138 Inliner]: procedures = 27, calls = 46, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 414 [2023-11-06 22:44:37,051 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:44:37,052 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:44:37,052 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:44:37,052 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:44:37,062 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:36" (1/1) ... [2023-11-06 22:44:37,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:36" (1/1) ... [2023-11-06 22:44:37,077 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:36" (1/1) ... [2023-11-06 22:44:37,077 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:36" (1/1) ... [2023-11-06 22:44:37,091 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:36" (1/1) ... [2023-11-06 22:44:37,100 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:36" (1/1) ... [2023-11-06 22:44:37,104 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:36" (1/1) ... [2023-11-06 22:44:37,107 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:36" (1/1) ... [2023-11-06 22:44:37,129 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:44:37,130 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:44:37,137 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:44:37,138 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:44:37,139 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:36" (1/1) ... [2023-11-06 22:44:37,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:44:37,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:37,184 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:44:37,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:44:37,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:44:37,246 INFO L130 BoogieDeclarations]: Found specification of procedure write_history_bool [2023-11-06 22:44:37,247 INFO L138 BoogieDeclarations]: Found implementation of procedure write_history_bool [2023-11-06 22:44:37,247 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-11-06 22:44:37,247 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-11-06 22:44:37,247 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_int8 [2023-11-06 22:44:37,247 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_int8 [2023-11-06 22:44:37,248 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_bool [2023-11-06 22:44:37,248 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_bool [2023-11-06 22:44:37,248 INFO L130 BoogieDeclarations]: Found specification of procedure add_history_type [2023-11-06 22:44:37,248 INFO L138 BoogieDeclarations]: Found implementation of procedure add_history_type [2023-11-06 22:44:37,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:44:37,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:44:37,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:44:37,394 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:44:37,395 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:44:37,983 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:44:37,993 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:44:37,993 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 22:44:37,996 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:37 BoogieIcfgContainer [2023-11-06 22:44:37,996 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:44:37,999 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:44:37,999 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:44:38,002 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:44:38,003 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:44:36" (1/3) ... [2023-11-06 22:44:38,004 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693b37a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:38, skipping insertion in model container [2023-11-06 22:44:38,004 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:44:36" (2/3) ... [2023-11-06 22:44:38,005 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693b37a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:44:38, skipping insertion in model container [2023-11-06 22:44:38,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:44:37" (3/3) ... [2023-11-06 22:44:38,006 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c [2023-11-06 22:44:38,029 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:44:38,029 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:44:38,096 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:44:38,104 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@34a34cec, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:44:38,105 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:44:38,111 INFO L276 IsEmpty]: Start isEmpty. Operand has 176 states, 137 states have (on average 1.6058394160583942) internal successors, (220), 141 states have internal predecessors, (220), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-06 22:44:38,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-06 22:44:38,127 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:38,128 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:38,128 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:38,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:38,135 INFO L85 PathProgramCache]: Analyzing trace with hash 397419636, now seen corresponding path program 1 times [2023-11-06 22:44:38,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:38,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213682093] [2023-11-06 22:44:38,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:38,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:38,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:38,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:38,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213682093] [2023-11-06 22:44:38,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213682093] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:38,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:38,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:44:38,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760521846] [2023-11-06 22:44:38,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:38,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:44:38,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:38,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:44:38,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:44:38,568 INFO L87 Difference]: Start difference. First operand has 176 states, 137 states have (on average 1.6058394160583942) internal successors, (220), 141 states have internal predecessors, (220), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:38,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:38,748 INFO L93 Difference]: Finished difference Result 357 states and 611 transitions. [2023-11-06 22:44:38,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:44:38,759 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-06 22:44:38,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:38,772 INFO L225 Difference]: With dead ends: 357 [2023-11-06 22:44:38,774 INFO L226 Difference]: Without dead ends: 180 [2023-11-06 22:44:38,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:38,791 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 18 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:38,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 796 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:44:38,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-11-06 22:44:38,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 178. [2023-11-06 22:44:38,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 139 states have (on average 1.5467625899280575) internal successors, (215), 142 states have internal predecessors, (215), 32 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-06 22:44:38,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 279 transitions. [2023-11-06 22:44:38,885 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 279 transitions. Word has length 15 [2023-11-06 22:44:38,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:38,886 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 279 transitions. [2023-11-06 22:44:38,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:38,887 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 279 transitions. [2023-11-06 22:44:38,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-06 22:44:38,889 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:38,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:38,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:44:38,890 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:38,891 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:38,891 INFO L85 PathProgramCache]: Analyzing trace with hash -15982282, now seen corresponding path program 1 times [2023-11-06 22:44:38,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:38,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196764160] [2023-11-06 22:44:38,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:38,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:38,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:38,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:38,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:38,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196764160] [2023-11-06 22:44:38,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196764160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:38,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:38,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:44:38,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370166741] [2023-11-06 22:44:38,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:38,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:44:38,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:38,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:44:38,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:44:38,985 INFO L87 Difference]: Start difference. First operand 178 states and 279 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:39,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:39,076 INFO L93 Difference]: Finished difference Result 369 states and 581 transitions. [2023-11-06 22:44:39,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:44:39,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-06 22:44:39,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:39,081 INFO L225 Difference]: With dead ends: 369 [2023-11-06 22:44:39,082 INFO L226 Difference]: Without dead ends: 194 [2023-11-06 22:44:39,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:39,085 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 25 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:39,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 804 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:39,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-11-06 22:44:39,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 191. [2023-11-06 22:44:39,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 150 states have (on average 1.5266666666666666) internal successors, (229), 153 states have internal predecessors, (229), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-06 22:44:39,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 295 transitions. [2023-11-06 22:44:39,138 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 295 transitions. Word has length 16 [2023-11-06 22:44:39,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:39,138 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 295 transitions. [2023-11-06 22:44:39,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:44:39,139 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 295 transitions. [2023-11-06 22:44:39,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-06 22:44:39,141 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:39,141 INFO L195 NwaCegarLoop]: 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] [2023-11-06 22:44:39,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:44:39,142 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:39,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:39,143 INFO L85 PathProgramCache]: Analyzing trace with hash 2013554693, now seen corresponding path program 1 times [2023-11-06 22:44:39,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:39,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246373764] [2023-11-06 22:44:39,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:39,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:39,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:44:39,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:39,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:39,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:39,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246373764] [2023-11-06 22:44:39,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246373764] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:39,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:39,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:44:39,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570171740] [2023-11-06 22:44:39,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:39,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:44:39,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:39,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:44:39,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:44:39,245 INFO L87 Difference]: Start difference. First operand 191 states and 295 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:44:39,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:39,277 INFO L93 Difference]: Finished difference Result 401 states and 627 transitions. [2023-11-06 22:44:39,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:44:39,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2023-11-06 22:44:39,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:39,282 INFO L225 Difference]: With dead ends: 401 [2023-11-06 22:44:39,282 INFO L226 Difference]: Without dead ends: 220 [2023-11-06 22:44:39,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:44:39,285 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 22 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:39,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 540 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:39,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-11-06 22:44:39,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 193. [2023-11-06 22:44:39,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 152 states have (on average 1.519736842105263) internal successors, (231), 155 states have internal predecessors, (231), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-06 22:44:39,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 297 transitions. [2023-11-06 22:44:39,312 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 297 transitions. Word has length 23 [2023-11-06 22:44:39,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:39,313 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 297 transitions. [2023-11-06 22:44:39,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:44:39,314 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 297 transitions. [2023-11-06 22:44:39,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-06 22:44:39,316 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:39,316 INFO L195 NwaCegarLoop]: 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] [2023-11-06 22:44:39,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:44:39,317 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:39,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:39,318 INFO L85 PathProgramCache]: Analyzing trace with hash -2107730890, now seen corresponding path program 1 times [2023-11-06 22:44:39,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:39,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241441988] [2023-11-06 22:44:39,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:39,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:39,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:39,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:44:39,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:39,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:44:39,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:39,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:39,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:39,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241441988] [2023-11-06 22:44:39,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241441988] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:39,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:39,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:44:39,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61537775] [2023-11-06 22:44:39,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:39,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:44:39,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:39,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:44:39,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:44:39,431 INFO L87 Difference]: Start difference. First operand 193 states and 297 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:44:39,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:39,519 INFO L93 Difference]: Finished difference Result 433 states and 684 transitions. [2023-11-06 22:44:39,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:44:39,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2023-11-06 22:44:39,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:39,524 INFO L225 Difference]: With dead ends: 433 [2023-11-06 22:44:39,524 INFO L226 Difference]: Without dead ends: 291 [2023-11-06 22:44:39,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:39,527 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 122 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:39,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 798 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:39,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-11-06 22:44:39,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 193. [2023-11-06 22:44:39,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 152 states have (on average 1.493421052631579) internal successors, (227), 155 states have internal predecessors, (227), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-06 22:44:39,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 293 transitions. [2023-11-06 22:44:39,553 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 293 transitions. Word has length 31 [2023-11-06 22:44:39,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:39,553 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 293 transitions. [2023-11-06 22:44:39,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:44:39,554 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 293 transitions. [2023-11-06 22:44:39,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-06 22:44:39,556 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:39,556 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:39,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:44:39,557 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:39,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:39,557 INFO L85 PathProgramCache]: Analyzing trace with hash 984821473, now seen corresponding path program 1 times [2023-11-06 22:44:39,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:39,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987040174] [2023-11-06 22:44:39,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:39,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:39,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:39,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:44:39,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:39,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:44:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:39,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:39,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:39,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987040174] [2023-11-06 22:44:39,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987040174] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:39,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:39,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:44:39,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223931598] [2023-11-06 22:44:39,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:39,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:44:39,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:39,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:44:39,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:39,686 INFO L87 Difference]: Start difference. First operand 193 states and 293 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:44:39,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:39,728 INFO L93 Difference]: Finished difference Result 376 states and 575 transitions. [2023-11-06 22:44:39,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:44:39,729 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2023-11-06 22:44:39,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:39,732 INFO L225 Difference]: With dead ends: 376 [2023-11-06 22:44:39,732 INFO L226 Difference]: Without dead ends: 195 [2023-11-06 22:44:39,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:39,735 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 0 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:39,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1062 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:39,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-11-06 22:44:39,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 193. [2023-11-06 22:44:39,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 152 states have (on average 1.486842105263158) internal successors, (226), 155 states have internal predecessors, (226), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-06 22:44:39,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 292 transitions. [2023-11-06 22:44:39,754 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 292 transitions. Word has length 32 [2023-11-06 22:44:39,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:39,755 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 292 transitions. [2023-11-06 22:44:39,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:44:39,755 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 292 transitions. [2023-11-06 22:44:39,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-06 22:44:39,757 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:39,758 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:39,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:44:39,758 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:39,759 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:39,759 INFO L85 PathProgramCache]: Analyzing trace with hash -2052729557, now seen corresponding path program 1 times [2023-11-06 22:44:39,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:39,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068434079] [2023-11-06 22:44:39,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:39,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:39,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:39,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:44:39,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:39,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:44:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:39,903 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:39,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:39,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068434079] [2023-11-06 22:44:39,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068434079] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:39,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922386735] [2023-11-06 22:44:39,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:39,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:39,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:39,916 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:39,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:44:40,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:40,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:44:40,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:40,171 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:40,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:44:40,249 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:44:40,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922386735] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:44:40,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:44:40,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-11-06 22:44:40,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753329373] [2023-11-06 22:44:40,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:44:40,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:44:40,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:40,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:44:40,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:40,253 INFO L87 Difference]: Start difference. First operand 193 states and 292 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:44:40,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:40,326 INFO L93 Difference]: Finished difference Result 434 states and 671 transitions. [2023-11-06 22:44:40,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:44:40,327 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 35 [2023-11-06 22:44:40,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:40,333 INFO L225 Difference]: With dead ends: 434 [2023-11-06 22:44:40,334 INFO L226 Difference]: Without dead ends: 252 [2023-11-06 22:44:40,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:40,341 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 58 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:40,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 1032 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:40,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-11-06 22:44:40,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 246. [2023-11-06 22:44:40,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 195 states have (on average 1.4615384615384615) internal successors, (285), 198 states have internal predecessors, (285), 43 states have call successors, (43), 7 states have call predecessors, (43), 7 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-11-06 22:44:40,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 371 transitions. [2023-11-06 22:44:40,371 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 371 transitions. Word has length 35 [2023-11-06 22:44:40,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:40,372 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 371 transitions. [2023-11-06 22:44:40,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-06 22:44:40,373 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 371 transitions. [2023-11-06 22:44:40,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-06 22:44:40,382 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:40,383 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:40,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:40,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:40,591 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:40,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:40,592 INFO L85 PathProgramCache]: Analyzing trace with hash -268515637, now seen corresponding path program 2 times [2023-11-06 22:44:40,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:40,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876605087] [2023-11-06 22:44:40,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:40,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:40,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:40,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:44:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:40,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:44:40,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:40,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:44:40,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:40,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:44:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:40,698 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-06 22:44:40,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:40,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876605087] [2023-11-06 22:44:40,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876605087] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:40,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:40,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:44:40,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394303923] [2023-11-06 22:44:40,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:40,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:44:40,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:40,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:44:40,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:44:40,703 INFO L87 Difference]: Start difference. First operand 246 states and 371 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:44:40,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:40,778 INFO L93 Difference]: Finished difference Result 502 states and 768 transitions. [2023-11-06 22:44:40,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:44:40,779 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2023-11-06 22:44:40,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:40,786 INFO L225 Difference]: With dead ends: 502 [2023-11-06 22:44:40,786 INFO L226 Difference]: Without dead ends: 285 [2023-11-06 22:44:40,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:40,790 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 24 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:40,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 796 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:40,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-11-06 22:44:40,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 282. [2023-11-06 22:44:40,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 227 states have (on average 1.4185022026431717) internal successors, (322), 230 states have internal predecessors, (322), 46 states have call successors, (46), 8 states have call predecessors, (46), 8 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-06 22:44:40,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 414 transitions. [2023-11-06 22:44:40,826 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 414 transitions. Word has length 57 [2023-11-06 22:44:40,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:40,827 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 414 transitions. [2023-11-06 22:44:40,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:44:40,828 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 414 transitions. [2023-11-06 22:44:40,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-06 22:44:40,831 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:40,832 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:40,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:44:40,832 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:40,833 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:40,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1274713020, now seen corresponding path program 1 times [2023-11-06 22:44:40,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:40,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672075795] [2023-11-06 22:44:40,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:40,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:40,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:44:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:40,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:44:40,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:40,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:44:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:40,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:44:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:40,949 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-06 22:44:40,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:40,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672075795] [2023-11-06 22:44:40,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672075795] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:40,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:40,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:44:40,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821627750] [2023-11-06 22:44:40,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:40,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:44:40,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:40,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:44:40,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:44:40,957 INFO L87 Difference]: Start difference. First operand 282 states and 414 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:44:41,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:41,024 INFO L93 Difference]: Finished difference Result 539 states and 815 transitions. [2023-11-06 22:44:41,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:44:41,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2023-11-06 22:44:41,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:41,028 INFO L225 Difference]: With dead ends: 539 [2023-11-06 22:44:41,028 INFO L226 Difference]: Without dead ends: 291 [2023-11-06 22:44:41,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:41,031 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 19 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:41,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 783 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:41,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-11-06 22:44:41,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 289. [2023-11-06 22:44:41,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 233 states have (on average 1.4163090128755365) internal successors, (330), 236 states have internal predecessors, (330), 46 states have call successors, (46), 9 states have call predecessors, (46), 9 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-06 22:44:41,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 422 transitions. [2023-11-06 22:44:41,074 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 422 transitions. Word has length 57 [2023-11-06 22:44:41,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:41,074 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 422 transitions. [2023-11-06 22:44:41,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:44:41,075 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 422 transitions. [2023-11-06 22:44:41,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-06 22:44:41,077 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:41,077 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:41,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:44:41,078 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:41,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:41,078 INFO L85 PathProgramCache]: Analyzing trace with hash -233424809, now seen corresponding path program 1 times [2023-11-06 22:44:41,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:41,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605534795] [2023-11-06 22:44:41,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:41,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:44:41,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:44:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:44:41,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:44:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:44:41,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:44:41,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,234 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-06 22:44:41,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:41,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605534795] [2023-11-06 22:44:41,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605534795] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:41,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:41,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:44:41,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951720226] [2023-11-06 22:44:41,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:41,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:44:41,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:41,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:44:41,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:41,238 INFO L87 Difference]: Start difference. First operand 289 states and 422 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 22:44:41,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:41,287 INFO L93 Difference]: Finished difference Result 527 states and 783 transitions. [2023-11-06 22:44:41,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:44:41,287 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 75 [2023-11-06 22:44:41,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:41,291 INFO L225 Difference]: With dead ends: 527 [2023-11-06 22:44:41,291 INFO L226 Difference]: Without dead ends: 291 [2023-11-06 22:44:41,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:41,294 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 0 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:41,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1061 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:41,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-11-06 22:44:41,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 289. [2023-11-06 22:44:41,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 233 states have (on average 1.4034334763948497) internal successors, (327), 236 states have internal predecessors, (327), 46 states have call successors, (46), 9 states have call predecessors, (46), 9 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-06 22:44:41,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 419 transitions. [2023-11-06 22:44:41,318 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 419 transitions. Word has length 75 [2023-11-06 22:44:41,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:41,319 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 419 transitions. [2023-11-06 22:44:41,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 22:44:41,319 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 419 transitions. [2023-11-06 22:44:41,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-06 22:44:41,321 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:41,321 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:41,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:44:41,322 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:41,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:41,322 INFO L85 PathProgramCache]: Analyzing trace with hash -433834635, now seen corresponding path program 1 times [2023-11-06 22:44:41,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:41,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963859422] [2023-11-06 22:44:41,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:41,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:44:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:44:41,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:44:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:44:41,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:44:41,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:44:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:44:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:44:41,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,464 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-11-06 22:44:41,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:41,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963859422] [2023-11-06 22:44:41,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963859422] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:41,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:41,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:44:41,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768407238] [2023-11-06 22:44:41,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:41,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:44:41,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:41,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:44:41,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:44:41,468 INFO L87 Difference]: Start difference. First operand 289 states and 419 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 22:44:41,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:41,543 INFO L93 Difference]: Finished difference Result 564 states and 839 transitions. [2023-11-06 22:44:41,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:44:41,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 104 [2023-11-06 22:44:41,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:41,549 INFO L225 Difference]: With dead ends: 564 [2023-11-06 22:44:41,550 INFO L226 Difference]: Without dead ends: 333 [2023-11-06 22:44:41,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:41,552 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 25 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:41,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 796 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:41,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2023-11-06 22:44:41,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 330. [2023-11-06 22:44:41,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 270 states have (on average 1.3666666666666667) internal successors, (369), 273 states have internal predecessors, (369), 49 states have call successors, (49), 10 states have call predecessors, (49), 10 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-11-06 22:44:41,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 467 transitions. [2023-11-06 22:44:41,588 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 467 transitions. Word has length 104 [2023-11-06 22:44:41,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:41,590 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 467 transitions. [2023-11-06 22:44:41,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 22:44:41,592 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 467 transitions. [2023-11-06 22:44:41,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-06 22:44:41,599 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:41,599 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:41,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:44:41,600 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:41,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:41,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1035052686, now seen corresponding path program 1 times [2023-11-06 22:44:41,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:41,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139109837] [2023-11-06 22:44:41,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:41,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:44:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:44:41,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:44:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:44:41,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:44:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:44:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:44:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:44:41,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:41,838 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-11-06 22:44:41,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:41,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139109837] [2023-11-06 22:44:41,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139109837] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:41,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:41,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:44:41,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238387478] [2023-11-06 22:44:41,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:41,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:44:41,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:41,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:44:41,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:44:41,841 INFO L87 Difference]: Start difference. First operand 330 states and 467 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 22:44:41,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:41,905 INFO L93 Difference]: Finished difference Result 590 states and 859 transitions. [2023-11-06 22:44:41,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:44:41,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 105 [2023-11-06 22:44:41,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:41,909 INFO L225 Difference]: With dead ends: 590 [2023-11-06 22:44:41,910 INFO L226 Difference]: Without dead ends: 324 [2023-11-06 22:44:41,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:41,912 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 15 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:41,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 756 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:41,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2023-11-06 22:44:41,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2023-11-06 22:44:41,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 265 states have (on average 1.3471698113207546) internal successors, (357), 268 states have internal predecessors, (357), 48 states have call successors, (48), 10 states have call predecessors, (48), 10 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-06 22:44:41,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 453 transitions. [2023-11-06 22:44:41,934 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 453 transitions. Word has length 105 [2023-11-06 22:44:41,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:41,935 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 453 transitions. [2023-11-06 22:44:41,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-06 22:44:41,935 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 453 transitions. [2023-11-06 22:44:41,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-06 22:44:41,937 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:41,938 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:41,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:44:41,938 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:41,939 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:41,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1149407255, now seen corresponding path program 1 times [2023-11-06 22:44:41,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:41,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733619275] [2023-11-06 22:44:41,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:41,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:41,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:44:42,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:44:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:44:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:44:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:44:42,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:44:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:44:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:44:42,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:44:42,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:44:42,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,108 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2023-11-06 22:44:42,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:42,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733619275] [2023-11-06 22:44:42,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733619275] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:42,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:42,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:44:42,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086985237] [2023-11-06 22:44:42,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:42,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:44:42,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:42,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:44:42,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:42,112 INFO L87 Difference]: Start difference. First operand 324 states and 453 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-06 22:44:42,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:42,156 INFO L93 Difference]: Finished difference Result 565 states and 808 transitions. [2023-11-06 22:44:42,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:44:42,157 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 124 [2023-11-06 22:44:42,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:42,161 INFO L225 Difference]: With dead ends: 565 [2023-11-06 22:44:42,161 INFO L226 Difference]: Without dead ends: 326 [2023-11-06 22:44:42,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:42,163 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 0 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:42,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1045 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:42,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2023-11-06 22:44:42,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 324. [2023-11-06 22:44:42,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 265 states have (on average 1.3358490566037735) internal successors, (354), 268 states have internal predecessors, (354), 48 states have call successors, (48), 10 states have call predecessors, (48), 10 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-06 22:44:42,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 450 transitions. [2023-11-06 22:44:42,186 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 450 transitions. Word has length 124 [2023-11-06 22:44:42,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:42,187 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 450 transitions. [2023-11-06 22:44:42,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-06 22:44:42,188 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 450 transitions. [2023-11-06 22:44:42,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-06 22:44:42,190 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:42,190 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 7, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:42,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:44:42,191 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:42,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:42,192 INFO L85 PathProgramCache]: Analyzing trace with hash 629229877, now seen corresponding path program 1 times [2023-11-06 22:44:42,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:42,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195596640] [2023-11-06 22:44:42,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:42,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:42,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:44:42,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:44:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:44:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:44:42,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:44:42,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:44:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:44:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:44:42,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:44:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:44:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:44:42,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:44:42,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,350 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2023-11-06 22:44:42,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:42,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195596640] [2023-11-06 22:44:42,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195596640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:42,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:42,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:44:42,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58762775] [2023-11-06 22:44:42,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:42,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:44:42,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:42,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:44:42,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:44:42,354 INFO L87 Difference]: Start difference. First operand 324 states and 450 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-06 22:44:42,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:42,456 INFO L93 Difference]: Finished difference Result 528 states and 768 transitions. [2023-11-06 22:44:42,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:44:42,457 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 157 [2023-11-06 22:44:42,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:42,460 INFO L225 Difference]: With dead ends: 528 [2023-11-06 22:44:42,461 INFO L226 Difference]: Without dead ends: 322 [2023-11-06 22:44:42,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:42,463 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 13 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:42,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 724 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:44:42,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2023-11-06 22:44:42,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2023-11-06 22:44:42,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 264 states have (on average 1.3333333333333333) internal successors, (352), 267 states have internal predecessors, (352), 47 states have call successors, (47), 10 states have call predecessors, (47), 10 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-11-06 22:44:42,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 446 transitions. [2023-11-06 22:44:42,488 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 446 transitions. Word has length 157 [2023-11-06 22:44:42,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:42,489 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 446 transitions. [2023-11-06 22:44:42,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-06 22:44:42,489 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 446 transitions. [2023-11-06 22:44:42,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-11-06 22:44:42,493 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:42,493 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:42,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:44:42,494 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:42,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:42,494 INFO L85 PathProgramCache]: Analyzing trace with hash -541419985, now seen corresponding path program 1 times [2023-11-06 22:44:42,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:42,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464625629] [2023-11-06 22:44:42,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:42,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:42,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:44:42,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:44:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:44:42,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:44:42,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:44:42,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:44:42,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:44:42,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:44:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:44:42,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:44:42,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:44:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:44:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-06 22:44:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:44:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,728 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2023-11-06 22:44:42,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:42,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464625629] [2023-11-06 22:44:42,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464625629] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:42,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:42,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:44:42,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098113607] [2023-11-06 22:44:42,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:42,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:44:42,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:42,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:44:42,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:44:42,732 INFO L87 Difference]: Start difference. First operand 322 states and 446 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-06 22:44:42,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:42,810 INFO L93 Difference]: Finished difference Result 468 states and 664 transitions. [2023-11-06 22:44:42,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:44:42,811 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 172 [2023-11-06 22:44:42,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:42,814 INFO L225 Difference]: With dead ends: 468 [2023-11-06 22:44:42,815 INFO L226 Difference]: Without dead ends: 305 [2023-11-06 22:44:42,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:42,817 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 35 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:42,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 705 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:42,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-11-06 22:44:42,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2023-11-06 22:44:42,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 250 states have (on average 1.324) internal successors, (331), 253 states have internal predecessors, (331), 44 states have call successors, (44), 10 states have call predecessors, (44), 10 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-06 22:44:42,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 419 transitions. [2023-11-06 22:44:42,840 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 419 transitions. Word has length 172 [2023-11-06 22:44:42,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:42,841 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 419 transitions. [2023-11-06 22:44:42,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-06 22:44:42,842 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 419 transitions. [2023-11-06 22:44:42,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-11-06 22:44:42,845 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:42,845 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:42,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:44:42,845 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:42,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:42,846 INFO L85 PathProgramCache]: Analyzing trace with hash 863024846, now seen corresponding path program 1 times [2023-11-06 22:44:42,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:42,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932342678] [2023-11-06 22:44:42,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:42,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:44:42,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:44:42,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:44:42,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:44:42,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:44:42,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:44:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:44:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:42,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:44:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:44:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:44:43,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:44:43,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:44:43,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-06 22:44:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:44:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,077 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2023-11-06 22:44:43,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:43,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932342678] [2023-11-06 22:44:43,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932342678] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:43,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:43,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:44:43,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002919988] [2023-11-06 22:44:43,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:43,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:44:43,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:43,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:44:43,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:44:43,081 INFO L87 Difference]: Start difference. First operand 305 states and 419 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-06 22:44:43,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:43,156 INFO L93 Difference]: Finished difference Result 451 states and 637 transitions. [2023-11-06 22:44:43,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:44:43,157 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 174 [2023-11-06 22:44:43,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:43,161 INFO L225 Difference]: With dead ends: 451 [2023-11-06 22:44:43,161 INFO L226 Difference]: Without dead ends: 286 [2023-11-06 22:44:43,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:43,163 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 30 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:43,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 709 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:43,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2023-11-06 22:44:43,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2023-11-06 22:44:43,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 234 states have (on average 1.3162393162393162) internal successors, (308), 237 states have internal predecessors, (308), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-06 22:44:43,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 390 transitions. [2023-11-06 22:44:43,184 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 390 transitions. Word has length 174 [2023-11-06 22:44:43,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:43,185 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 390 transitions. [2023-11-06 22:44:43,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-06 22:44:43,186 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 390 transitions. [2023-11-06 22:44:43,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-06 22:44:43,188 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:43,189 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 7, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:43,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:44:43,189 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:43,189 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:43,190 INFO L85 PathProgramCache]: Analyzing trace with hash 372392667, now seen corresponding path program 1 times [2023-11-06 22:44:43,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:43,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719884739] [2023-11-06 22:44:43,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:43,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:43,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:44:43,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:44:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:44:43,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:44:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:44:43,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:44:43,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:44:43,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:44:43,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:44:43,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:44:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:44:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:44:43,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-06 22:44:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:44:43,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,405 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2023-11-06 22:44:43,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:43,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719884739] [2023-11-06 22:44:43,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719884739] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:43,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:43,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:44:43,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616022599] [2023-11-06 22:44:43,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:43,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:44:43,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:43,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:44:43,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:43,409 INFO L87 Difference]: Start difference. First operand 286 states and 390 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-06 22:44:43,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:43,452 INFO L93 Difference]: Finished difference Result 431 states and 607 transitions. [2023-11-06 22:44:43,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:44:43,452 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 175 [2023-11-06 22:44:43,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:43,456 INFO L225 Difference]: With dead ends: 431 [2023-11-06 22:44:43,456 INFO L226 Difference]: Without dead ends: 286 [2023-11-06 22:44:43,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:43,458 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 0 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:43,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1023 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:43,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2023-11-06 22:44:43,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2023-11-06 22:44:43,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 234 states have (on average 1.2905982905982907) internal successors, (302), 237 states have internal predecessors, (302), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-06 22:44:43,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 384 transitions. [2023-11-06 22:44:43,484 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 384 transitions. Word has length 175 [2023-11-06 22:44:43,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:43,485 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 384 transitions. [2023-11-06 22:44:43,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-06 22:44:43,486 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 384 transitions. [2023-11-06 22:44:43,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-11-06 22:44:43,490 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:43,490 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:43,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:44:43,491 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:43,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:43,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1128219498, now seen corresponding path program 1 times [2023-11-06 22:44:43,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:43,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211674611] [2023-11-06 22:44:43,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:43,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:43,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:44:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:44:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:44:43,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:44:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:44:43,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:44:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:44:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:44:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:44:43,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:44:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:44:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:44:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-06 22:44:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,771 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2023-11-06 22:44:43,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:43,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211674611] [2023-11-06 22:44:43,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211674611] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:43,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396730871] [2023-11-06 22:44:43,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:43,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:43,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:43,774 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:43,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:44:43,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:43,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:44:43,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:44,056 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2023-11-06 22:44:44,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:44:44,202 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2023-11-06 22:44:44,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396730871] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:44,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:44:44,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 5 [2023-11-06 22:44:44,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336095041] [2023-11-06 22:44:44,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:44,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:44:44,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:44,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:44:44,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:44,206 INFO L87 Difference]: Start difference. First operand 286 states and 384 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-06 22:44:44,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:44,273 INFO L93 Difference]: Finished difference Result 452 states and 629 transitions. [2023-11-06 22:44:44,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:44:44,273 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 182 [2023-11-06 22:44:44,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:44,277 INFO L225 Difference]: With dead ends: 452 [2023-11-06 22:44:44,277 INFO L226 Difference]: Without dead ends: 265 [2023-11-06 22:44:44,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:44,279 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 30 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:44,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 485 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:44,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-11-06 22:44:44,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2023-11-06 22:44:44,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 216 states have (on average 1.2824074074074074) internal successors, (277), 219 states have internal predecessors, (277), 38 states have call successors, (38), 10 states have call predecessors, (38), 10 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-06 22:44:44,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 353 transitions. [2023-11-06 22:44:44,302 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 353 transitions. Word has length 182 [2023-11-06 22:44:44,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:44,303 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 353 transitions. [2023-11-06 22:44:44,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-06 22:44:44,304 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 353 transitions. [2023-11-06 22:44:44,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-11-06 22:44:44,307 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:44,307 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:44,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:44,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 22:44:44,516 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:44,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:44,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1141209463, now seen corresponding path program 1 times [2023-11-06 22:44:44,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:44,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350680783] [2023-11-06 22:44:44,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:44,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:44,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:44:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:44,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:44:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:44,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:44:44,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:44,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:44:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:44,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:44:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:44,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:44:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:44,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:44:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:44,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:44:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:44,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:44:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:44,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:44:44,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:44,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:44:44,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:44,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:44:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:44,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-06 22:44:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:44,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:44:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:44,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:44:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:44,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:44:44,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:44,734 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2023-11-06 22:44:44,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:44,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350680783] [2023-11-06 22:44:44,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350680783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:44,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:44,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:44:44,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204012114] [2023-11-06 22:44:44,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:44,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:44:44,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:44,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:44:44,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:44:44,738 INFO L87 Difference]: Start difference. First operand 265 states and 353 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-06 22:44:44,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:44,783 INFO L93 Difference]: Finished difference Result 409 states and 571 transitions. [2023-11-06 22:44:44,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:44:44,783 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 206 [2023-11-06 22:44:44,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:44,786 INFO L225 Difference]: With dead ends: 409 [2023-11-06 22:44:44,787 INFO L226 Difference]: Without dead ends: 271 [2023-11-06 22:44:44,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:44,788 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 6 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:44,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 749 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:44,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2023-11-06 22:44:44,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 269. [2023-11-06 22:44:44,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 219 states have (on average 1.278538812785388) internal successors, (280), 222 states have internal predecessors, (280), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-06 22:44:44,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 356 transitions. [2023-11-06 22:44:44,816 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 356 transitions. Word has length 206 [2023-11-06 22:44:44,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:44,819 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 356 transitions. [2023-11-06 22:44:44,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-06 22:44:44,819 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 356 transitions. [2023-11-06 22:44:44,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-11-06 22:44:44,841 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:44,841 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:44,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 22:44:44,842 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:44,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:44,842 INFO L85 PathProgramCache]: Analyzing trace with hash 412787025, now seen corresponding path program 1 times [2023-11-06 22:44:44,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:44,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175886658] [2023-11-06 22:44:44,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:44,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:44,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:44,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:44:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:44,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:44:44,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:44,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:44:44,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:44,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:44:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:44,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:44:44,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:44,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:44:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:44,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:44:45,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:44:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:44:45,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:44:45,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:44:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:44:45,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-06 22:44:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:44:45,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:44:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:44:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-11-06 22:44:45,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,081 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2023-11-06 22:44:45,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:45,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175886658] [2023-11-06 22:44:45,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175886658] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:45,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635730399] [2023-11-06 22:44:45,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:45,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:45,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:45,084 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:45,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:44:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:44:45,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:45,345 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2023-11-06 22:44:45,345 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:44:45,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635730399] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:45,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:44:45,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-11-06 22:44:45,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827156231] [2023-11-06 22:44:45,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:45,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:44:45,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:45,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:44:45,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:45,350 INFO L87 Difference]: Start difference. First operand 269 states and 356 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-06 22:44:45,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:45,398 INFO L93 Difference]: Finished difference Result 418 states and 578 transitions. [2023-11-06 22:44:45,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:44:45,399 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 213 [2023-11-06 22:44:45,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:45,402 INFO L225 Difference]: With dead ends: 418 [2023-11-06 22:44:45,402 INFO L226 Difference]: Without dead ends: 276 [2023-11-06 22:44:45,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:44:45,404 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 7 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:45,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 754 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:45,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-11-06 22:44:45,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 274. [2023-11-06 22:44:45,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 223 states have (on average 1.2735426008968609) internal successors, (284), 226 states have internal predecessors, (284), 38 states have call successors, (38), 12 states have call predecessors, (38), 12 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-06 22:44:45,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 360 transitions. [2023-11-06 22:44:45,427 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 360 transitions. Word has length 213 [2023-11-06 22:44:45,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:45,429 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 360 transitions. [2023-11-06 22:44:45,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-06 22:44:45,430 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 360 transitions. [2023-11-06 22:44:45,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-11-06 22:44:45,434 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:45,434 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:45,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:45,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:45,650 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:45,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:45,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1829729402, now seen corresponding path program 1 times [2023-11-06 22:44:45,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:45,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377364494] [2023-11-06 22:44:45,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:45,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:45,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:44:45,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:44:45,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:44:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:44:45,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:44:45,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:44:45,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:44:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:44:45,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:44:45,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:44:45,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:44:45,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:44:45,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-06 22:44:45,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:44:45,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:44:45,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:44:45,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-11-06 22:44:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-11-06 22:44:45,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:45,940 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2023-11-06 22:44:45,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:45,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377364494] [2023-11-06 22:44:45,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377364494] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:45,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341519897] [2023-11-06 22:44:45,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:45,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:45,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:45,943 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:45,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:44:46,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:46,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 747 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:44:46,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:46,213 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2023-11-06 22:44:46,213 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:44:46,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341519897] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:46,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:44:46,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-11-06 22:44:46,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021861837] [2023-11-06 22:44:46,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:46,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:44:46,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:46,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:44:46,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:46,218 INFO L87 Difference]: Start difference. First operand 274 states and 360 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-06 22:44:46,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:46,266 INFO L93 Difference]: Finished difference Result 420 states and 576 transitions. [2023-11-06 22:44:46,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:44:46,267 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 221 [2023-11-06 22:44:46,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:46,270 INFO L225 Difference]: With dead ends: 420 [2023-11-06 22:44:46,270 INFO L226 Difference]: Without dead ends: 273 [2023-11-06 22:44:46,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:44:46,272 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 7 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:46,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 740 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:44:46,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-11-06 22:44:46,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2023-11-06 22:44:46,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 223 states have (on average 1.2600896860986548) internal successors, (281), 225 states have internal predecessors, (281), 37 states have call successors, (37), 12 states have call predecessors, (37), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-06 22:44:46,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 355 transitions. [2023-11-06 22:44:46,297 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 355 transitions. Word has length 221 [2023-11-06 22:44:46,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:46,298 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 355 transitions. [2023-11-06 22:44:46,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-06 22:44:46,299 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 355 transitions. [2023-11-06 22:44:46,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-11-06 22:44:46,302 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:46,303 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:46,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:46,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:46,510 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:46,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:46,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1869972829, now seen corresponding path program 1 times [2023-11-06 22:44:46,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:46,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972938718] [2023-11-06 22:44:46,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:46,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:46,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:46,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:44:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:46,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:44:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:46,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:44:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:46,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:44:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:46,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:44:46,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:46,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:44:46,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:46,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:44:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:46,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:44:46,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:46,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:44:46,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:46,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:44:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:46,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:44:46,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:46,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:44:46,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:46,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-06 22:44:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:46,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:44:46,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:46,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:44:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:46,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:44:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:46,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-11-06 22:44:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:46,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-11-06 22:44:46,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:46,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2023-11-06 22:44:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:46,763 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2023-11-06 22:44:46,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:46,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972938718] [2023-11-06 22:44:46,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972938718] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:46,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:46,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:44:46,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676908786] [2023-11-06 22:44:46,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:46,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:44:46,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:46,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:44:46,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:44:46,767 INFO L87 Difference]: Start difference. First operand 273 states and 355 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-06 22:44:47,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:47,117 INFO L93 Difference]: Finished difference Result 418 states and 565 transitions. [2023-11-06 22:44:47,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:44:47,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 229 [2023-11-06 22:44:47,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:47,122 INFO L225 Difference]: With dead ends: 418 [2023-11-06 22:44:47,122 INFO L226 Difference]: Without dead ends: 272 [2023-11-06 22:44:47,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:44:47,124 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 60 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:47,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 482 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:44:47,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2023-11-06 22:44:47,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2023-11-06 22:44:47,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 223 states have (on average 1.2556053811659194) internal successors, (280), 224 states have internal predecessors, (280), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-06 22:44:47,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 352 transitions. [2023-11-06 22:44:47,160 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 352 transitions. Word has length 229 [2023-11-06 22:44:47,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:47,160 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 352 transitions. [2023-11-06 22:44:47,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-06 22:44:47,161 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 352 transitions. [2023-11-06 22:44:47,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-11-06 22:44:47,165 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:47,165 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:47,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-06 22:44:47,166 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:47,166 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:47,166 INFO L85 PathProgramCache]: Analyzing trace with hash -2103290542, now seen corresponding path program 1 times [2023-11-06 22:44:47,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:47,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598776246] [2023-11-06 22:44:47,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:47,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:47,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:47,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:44:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:47,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:44:47,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:47,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:44:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:47,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:44:47,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:47,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:44:47,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:47,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:44:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:47,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:44:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:47,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:44:47,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:47,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:44:47,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:47,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:44:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:47,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:44:47,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:47,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:44:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:47,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-06 22:44:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:47,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:44:47,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:47,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:44:47,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:47,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:44:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:47,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-11-06 22:44:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:47,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-11-06 22:44:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:47,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2023-11-06 22:44:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:47,550 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2023-11-06 22:44:47,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:47,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598776246] [2023-11-06 22:44:47,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598776246] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:47,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:47,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:44:47,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585504530] [2023-11-06 22:44:47,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:47,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:44:47,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:47,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:44:47,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:47,554 INFO L87 Difference]: Start difference. First operand 272 states and 352 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 22:44:48,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:48,275 INFO L93 Difference]: Finished difference Result 623 states and 834 transitions. [2023-11-06 22:44:48,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:44:48,276 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 231 [2023-11-06 22:44:48,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:48,280 INFO L225 Difference]: With dead ends: 623 [2023-11-06 22:44:48,281 INFO L226 Difference]: Without dead ends: 478 [2023-11-06 22:44:48,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:44:48,283 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 411 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:48,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 625 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:44:48,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2023-11-06 22:44:48,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 424. [2023-11-06 22:44:48,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 345 states have (on average 1.3014492753623188) internal successors, (449), 347 states have internal predecessors, (449), 54 states have call successors, (54), 24 states have call predecessors, (54), 24 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-06 22:44:48,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 557 transitions. [2023-11-06 22:44:48,344 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 557 transitions. Word has length 231 [2023-11-06 22:44:48,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:48,345 INFO L495 AbstractCegarLoop]: Abstraction has 424 states and 557 transitions. [2023-11-06 22:44:48,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 22:44:48,345 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 557 transitions. [2023-11-06 22:44:48,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2023-11-06 22:44:48,349 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:48,349 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:48,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-06 22:44:48,350 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:48,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:48,350 INFO L85 PathProgramCache]: Analyzing trace with hash -293233112, now seen corresponding path program 1 times [2023-11-06 22:44:48,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:48,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521347057] [2023-11-06 22:44:48,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:48,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:48,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:48,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:44:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:48,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:44:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:48,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:44:48,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:48,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:44:48,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:48,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:44:48,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:48,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:44:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:48,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:44:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:48,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:44:48,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:48,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:44:48,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:48,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:44:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:48,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:44:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:48,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:44:48,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:48,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-06 22:44:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:48,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:44:48,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:48,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:44:48,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:48,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:44:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:48,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-11-06 22:44:48,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:48,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-11-06 22:44:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:48,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2023-11-06 22:44:48,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:48,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-11-06 22:44:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:48,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-11-06 22:44:48,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:48,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2023-11-06 22:44:48,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:48,602 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2023-11-06 22:44:48,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:48,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521347057] [2023-11-06 22:44:48,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521347057] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:48,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:48,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:44:48,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597814083] [2023-11-06 22:44:48,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:48,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:44:48,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:48,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:44:48,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:44:48,605 INFO L87 Difference]: Start difference. First operand 424 states and 557 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-06 22:44:49,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:49,151 INFO L93 Difference]: Finished difference Result 896 states and 1231 transitions. [2023-11-06 22:44:49,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:44:49,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 259 [2023-11-06 22:44:49,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:49,157 INFO L225 Difference]: With dead ends: 896 [2023-11-06 22:44:49,157 INFO L226 Difference]: Without dead ends: 667 [2023-11-06 22:44:49,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:49,159 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 220 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:49,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 478 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:44:49,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2023-11-06 22:44:49,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 505. [2023-11-06 22:44:49,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 416 states have (on average 1.3125) internal successors, (546), 419 states have internal predecessors, (546), 59 states have call successors, (59), 29 states have call predecessors, (59), 29 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2023-11-06 22:44:49,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 664 transitions. [2023-11-06 22:44:49,223 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 664 transitions. Word has length 259 [2023-11-06 22:44:49,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:49,224 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 664 transitions. [2023-11-06 22:44:49,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-06 22:44:49,224 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 664 transitions. [2023-11-06 22:44:49,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-11-06 22:44:49,228 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:49,229 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:49,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-06 22:44:49,229 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:49,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:49,230 INFO L85 PathProgramCache]: Analyzing trace with hash 58055636, now seen corresponding path program 1 times [2023-11-06 22:44:49,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:49,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118459201] [2023-11-06 22:44:49,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:49,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:49,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:44:49,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:49,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:44:49,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:49,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:44:49,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:49,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:44:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:49,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:44:49,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:49,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:44:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:49,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:44:49,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:49,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:44:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:49,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:44:49,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:49,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:44:49,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:49,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:44:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:49,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:44:49,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:49,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-06 22:44:49,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:49,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:44:49,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:49,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:44:49,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:49,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:44:49,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:49,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-11-06 22:44:49,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:49,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-11-06 22:44:49,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:49,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2023-11-06 22:44:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:49,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-11-06 22:44:49,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:49,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2023-11-06 22:44:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:49,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-11-06 22:44:49,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:49,442 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2023-11-06 22:44:49,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:49,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118459201] [2023-11-06 22:44:49,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118459201] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:49,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:49,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:44:49,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665343813] [2023-11-06 22:44:49,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:49,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:44:49,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:49,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:44:49,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:44:49,445 INFO L87 Difference]: Start difference. First operand 505 states and 664 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-06 22:44:49,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:49,964 INFO L93 Difference]: Finished difference Result 1073 states and 1468 transitions. [2023-11-06 22:44:49,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:44:49,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 260 [2023-11-06 22:44:49,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:49,970 INFO L225 Difference]: With dead ends: 1073 [2023-11-06 22:44:49,970 INFO L226 Difference]: Without dead ends: 792 [2023-11-06 22:44:49,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:49,972 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 221 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:49,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 506 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:44:49,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2023-11-06 22:44:50,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 617. [2023-11-06 22:44:50,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 516 states have (on average 1.3255813953488371) internal successors, (684), 521 states have internal predecessors, (684), 65 states have call successors, (65), 35 states have call predecessors, (65), 35 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2023-11-06 22:44:50,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 814 transitions. [2023-11-06 22:44:50,075 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 814 transitions. Word has length 260 [2023-11-06 22:44:50,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:50,076 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 814 transitions. [2023-11-06 22:44:50,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-06 22:44:50,077 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 814 transitions. [2023-11-06 22:44:50,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2023-11-06 22:44:50,081 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:50,081 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:50,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-06 22:44:50,081 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:50,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:50,082 INFO L85 PathProgramCache]: Analyzing trace with hash 897487619, now seen corresponding path program 1 times [2023-11-06 22:44:50,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:50,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258242430] [2023-11-06 22:44:50,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:50,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:50,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:50,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:44:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:50,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:44:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:50,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:44:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:50,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:44:50,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:50,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:44:50,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:50,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:44:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:50,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:44:50,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:50,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:44:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:50,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:44:50,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:50,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:44:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:50,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:44:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:50,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:44:50,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:50,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-06 22:44:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:50,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:44:50,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:50,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:44:50,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:50,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:44:50,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:50,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-11-06 22:44:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:50,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-11-06 22:44:50,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:50,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2023-11-06 22:44:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:50,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-11-06 22:44:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:50,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-11-06 22:44:50,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:50,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-11-06 22:44:50,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:50,285 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2023-11-06 22:44:50,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:50,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258242430] [2023-11-06 22:44:50,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258242430] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:50,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:50,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:44:50,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479314568] [2023-11-06 22:44:50,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:50,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:44:50,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:50,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:44:50,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:44:50,288 INFO L87 Difference]: Start difference. First operand 617 states and 814 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-06 22:44:50,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:50,851 INFO L93 Difference]: Finished difference Result 1295 states and 1774 transitions. [2023-11-06 22:44:50,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:44:50,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 261 [2023-11-06 22:44:50,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:50,858 INFO L225 Difference]: With dead ends: 1295 [2023-11-06 22:44:50,859 INFO L226 Difference]: Without dead ends: 934 [2023-11-06 22:44:50,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:44:50,861 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 221 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:50,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 533 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:44:50,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2023-11-06 22:44:50,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 731. [2023-11-06 22:44:50,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 622 states have (on average 1.3440514469453375) internal successors, (836), 631 states have internal predecessors, (836), 69 states have call successors, (69), 39 states have call predecessors, (69), 39 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-06 22:44:50,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 974 transitions. [2023-11-06 22:44:50,992 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 974 transitions. Word has length 261 [2023-11-06 22:44:50,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:50,993 INFO L495 AbstractCegarLoop]: Abstraction has 731 states and 974 transitions. [2023-11-06 22:44:50,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-06 22:44:50,994 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 974 transitions. [2023-11-06 22:44:50,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2023-11-06 22:44:50,998 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:50,999 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:50,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-06 22:44:50,999 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:50,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:51,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1172247233, now seen corresponding path program 1 times [2023-11-06 22:44:51,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:51,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853728454] [2023-11-06 22:44:51,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:51,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:44:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:44:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:44:51,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:44:51,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:44:51,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:44:51,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:44:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:44:51,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:44:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:44:51,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:44:51,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:44:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-06 22:44:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:44:51,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:44:51,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:44:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-11-06 22:44:51,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-11-06 22:44:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2023-11-06 22:44:51,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-11-06 22:44:51,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-11-06 22:44:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-11-06 22:44:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,353 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 603 trivial. 0 not checked. [2023-11-06 22:44:51,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:51,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853728454] [2023-11-06 22:44:51,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853728454] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:51,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436279535] [2023-11-06 22:44:51,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:51,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:51,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:51,357 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:51,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:44:51,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:51,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:44:51,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:51,640 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2023-11-06 22:44:51,640 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:44:51,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436279535] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:51,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:44:51,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2023-11-06 22:44:51,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399308439] [2023-11-06 22:44:51,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:51,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:44:51,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:51,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:44:51,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:44:51,644 INFO L87 Difference]: Start difference. First operand 731 states and 974 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-06 22:44:51,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:51,875 INFO L93 Difference]: Finished difference Result 1210 states and 1654 transitions. [2023-11-06 22:44:51,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:44:51,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 261 [2023-11-06 22:44:51,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:51,882 INFO L225 Difference]: With dead ends: 1210 [2023-11-06 22:44:51,882 INFO L226 Difference]: Without dead ends: 731 [2023-11-06 22:44:51,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:44:51,885 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 51 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:51,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 657 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:44:51,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2023-11-06 22:44:52,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 731. [2023-11-06 22:44:52,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 622 states have (on average 1.3344051446945338) internal successors, (830), 631 states have internal predecessors, (830), 69 states have call successors, (69), 39 states have call predecessors, (69), 39 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-06 22:44:52,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 968 transitions. [2023-11-06 22:44:52,012 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 968 transitions. Word has length 261 [2023-11-06 22:44:52,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:52,012 INFO L495 AbstractCegarLoop]: Abstraction has 731 states and 968 transitions. [2023-11-06 22:44:52,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-06 22:44:52,013 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 968 transitions. [2023-11-06 22:44:52,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2023-11-06 22:44:52,018 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:52,018 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:52,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:52,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:52,225 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:52,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:52,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1161044656, now seen corresponding path program 1 times [2023-11-06 22:44:52,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:52,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468384201] [2023-11-06 22:44:52,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:52,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:52,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:52,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:44:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:52,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:44:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:52,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:44:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:52,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:44:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:52,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:44:52,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:52,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:44:52,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:52,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:44:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:52,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:44:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:52,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:44:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:52,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:44:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:52,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:44:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:52,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:44:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:52,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-06 22:44:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:52,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:44:52,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:52,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:44:52,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:52,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:44:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:52,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-11-06 22:44:52,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:52,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-11-06 22:44:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:52,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2023-11-06 22:44:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:52,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-11-06 22:44:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:52,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2023-11-06 22:44:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:52,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-11-06 22:44:52,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:52,602 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 617 trivial. 0 not checked. [2023-11-06 22:44:52,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:52,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468384201] [2023-11-06 22:44:52,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468384201] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:52,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547723617] [2023-11-06 22:44:52,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:52,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:52,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:52,616 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:52,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:44:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:52,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:44:52,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:52,904 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2023-11-06 22:44:52,904 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:44:52,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547723617] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:52,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:44:52,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2023-11-06 22:44:52,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015410651] [2023-11-06 22:44:52,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:52,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:44:52,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:52,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:44:52,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:44:52,907 INFO L87 Difference]: Start difference. First operand 731 states and 968 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-06 22:44:53,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:53,083 INFO L93 Difference]: Finished difference Result 1210 states and 1640 transitions. [2023-11-06 22:44:53,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:44:53,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 262 [2023-11-06 22:44:53,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:53,090 INFO L225 Difference]: With dead ends: 1210 [2023-11-06 22:44:53,090 INFO L226 Difference]: Without dead ends: 743 [2023-11-06 22:44:53,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:44:53,093 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 15 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:53,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 680 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:44:53,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2023-11-06 22:44:53,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 743. [2023-11-06 22:44:53,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 632 states have (on average 1.3354430379746836) internal successors, (844), 641 states have internal predecessors, (844), 69 states have call successors, (69), 41 states have call predecessors, (69), 41 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-06 22:44:53,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 982 transitions. [2023-11-06 22:44:53,194 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 982 transitions. Word has length 262 [2023-11-06 22:44:53,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:53,195 INFO L495 AbstractCegarLoop]: Abstraction has 743 states and 982 transitions. [2023-11-06 22:44:53,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-06 22:44:53,196 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 982 transitions. [2023-11-06 22:44:53,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-11-06 22:44:53,200 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:53,201 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:53,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:53,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-06 22:44:53,408 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:53,408 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:53,408 INFO L85 PathProgramCache]: Analyzing trace with hash 305075163, now seen corresponding path program 1 times [2023-11-06 22:44:53,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:53,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407770764] [2023-11-06 22:44:53,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:53,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:53,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:44:53,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:53,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:44:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:53,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:44:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:53,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:44:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:53,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:44:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:53,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:44:53,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:53,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:44:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:53,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:44:53,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:53,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:44:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:53,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:44:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:53,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:44:53,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:53,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:44:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:53,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-06 22:44:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:53,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:44:53,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:53,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:44:53,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:53,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:44:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:53,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-11-06 22:44:53,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:53,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-11-06 22:44:53,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:53,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2023-11-06 22:44:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:53,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-11-06 22:44:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:53,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2023-11-06 22:44:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:53,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-11-06 22:44:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:53,762 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2023-11-06 22:44:53,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:53,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407770764] [2023-11-06 22:44:53,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407770764] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:53,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:53,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:44:53,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449537657] [2023-11-06 22:44:53,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:53,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:44:53,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:53,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:44:53,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:44:53,765 INFO L87 Difference]: Start difference. First operand 743 states and 982 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-06 22:44:54,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:54,125 INFO L93 Difference]: Finished difference Result 1224 states and 1654 transitions. [2023-11-06 22:44:54,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:44:54,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 263 [2023-11-06 22:44:54,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:54,131 INFO L225 Difference]: With dead ends: 1224 [2023-11-06 22:44:54,132 INFO L226 Difference]: Without dead ends: 722 [2023-11-06 22:44:54,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:44:54,134 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 59 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:54,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 480 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:44:54,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2023-11-06 22:44:54,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 722. [2023-11-06 22:44:54,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 612 states have (on average 1.3186274509803921) internal successors, (807), 620 states have internal predecessors, (807), 69 states have call successors, (69), 41 states have call predecessors, (69), 40 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2023-11-06 22:44:54,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 944 transitions. [2023-11-06 22:44:54,232 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 944 transitions. Word has length 263 [2023-11-06 22:44:54,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:54,233 INFO L495 AbstractCegarLoop]: Abstraction has 722 states and 944 transitions. [2023-11-06 22:44:54,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-06 22:44:54,233 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 944 transitions. [2023-11-06 22:44:54,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-11-06 22:44:54,237 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:54,238 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:54,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-06 22:44:54,238 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:54,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:54,239 INFO L85 PathProgramCache]: Analyzing trace with hash -2046313536, now seen corresponding path program 1 times [2023-11-06 22:44:54,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:54,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203406592] [2023-11-06 22:44:54,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:54,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:54,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:44:54,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:54,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:44:54,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:54,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:44:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:54,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:44:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:54,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:44:54,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:54,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:44:54,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:54,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:44:54,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:54,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:44:54,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:54,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:44:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:54,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:44:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:54,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:44:54,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:54,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:44:54,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:54,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-06 22:44:54,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:54,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:44:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:54,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:44:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:54,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:44:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:54,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-11-06 22:44:54,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:54,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-11-06 22:44:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:54,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-11-06 22:44:54,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:54,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-11-06 22:44:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:54,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-11-06 22:44:54,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:54,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2023-11-06 22:44:54,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:54,732 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2023-11-06 22:44:54,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:54,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203406592] [2023-11-06 22:44:54,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203406592] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:44:54,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:44:54,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:44:54,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235056710] [2023-11-06 22:44:54,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:44:54,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:44:54,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:54,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:44:54,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:44:54,735 INFO L87 Difference]: Start difference. First operand 722 states and 944 transitions. Second operand has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:44:55,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:55,479 INFO L93 Difference]: Finished difference Result 1050 states and 1450 transitions. [2023-11-06 22:44:55,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:44:55,480 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 264 [2023-11-06 22:44:55,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:55,487 INFO L225 Difference]: With dead ends: 1050 [2023-11-06 22:44:55,487 INFO L226 Difference]: Without dead ends: 1048 [2023-11-06 22:44:55,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:44:55,489 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 243 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 1508 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:55,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 1508 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:44:55,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2023-11-06 22:44:55,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 728. [2023-11-06 22:44:55,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 616 states have (on average 1.3165584415584415) internal successors, (811), 625 states have internal predecessors, (811), 70 states have call successors, (70), 42 states have call predecessors, (70), 41 states have return successors, (69), 67 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-06 22:44:55,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 950 transitions. [2023-11-06 22:44:55,583 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 950 transitions. Word has length 264 [2023-11-06 22:44:55,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:55,583 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 950 transitions. [2023-11-06 22:44:55,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:44:55,584 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 950 transitions. [2023-11-06 22:44:55,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-11-06 22:44:55,588 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:55,588 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:55,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-06 22:44:55,588 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:55,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:55,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1490986618, now seen corresponding path program 1 times [2023-11-06 22:44:55,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:55,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424364199] [2023-11-06 22:44:55,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:55,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:55,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:55,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:44:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:55,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:44:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:55,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:44:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:55,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:44:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:55,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:44:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:55,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:44:55,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:55,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:44:55,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:55,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:44:55,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:55,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:44:55,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:55,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:44:55,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:55,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:44:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:55,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:44:55,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:55,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-06 22:44:55,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:55,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:44:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:55,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:44:55,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:55,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:44:55,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:56,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-11-06 22:44:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:56,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-11-06 22:44:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:56,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-11-06 22:44:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:56,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-11-06 22:44:56,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:56,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-11-06 22:44:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:56,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2023-11-06 22:44:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:56,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2023-11-06 22:44:56,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:56,077 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 142 proven. 27 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2023-11-06 22:44:56,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:44:56,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424364199] [2023-11-06 22:44:56,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424364199] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:44:56,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216754223] [2023-11-06 22:44:56,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:56,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:56,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:44:56,080 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:44:56,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:44:56,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:56,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 926 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:44:56,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:44:56,605 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 251 proven. 33 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2023-11-06 22:44:56,605 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:44:57,009 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 146 proven. 23 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2023-11-06 22:44:57,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216754223] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:44:57,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:44:57,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 19 [2023-11-06 22:44:57,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482908839] [2023-11-06 22:44:57,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:44:57,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-06 22:44:57,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:44:57,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-06 22:44:57,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:44:57,014 INFO L87 Difference]: Start difference. First operand 728 states and 950 transitions. Second operand has 19 states, 19 states have (on average 7.684210526315789) internal successors, (146), 14 states have internal predecessors, (146), 5 states have call successors, (28), 5 states have call predecessors, (28), 9 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) [2023-11-06 22:44:59,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:44:59,409 INFO L93 Difference]: Finished difference Result 1808 states and 2478 transitions. [2023-11-06 22:44:59,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-06 22:44:59,410 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.684210526315789) internal successors, (146), 14 states have internal predecessors, (146), 5 states have call successors, (28), 5 states have call predecessors, (28), 9 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) Word has length 272 [2023-11-06 22:44:59,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:44:59,420 INFO L225 Difference]: With dead ends: 1808 [2023-11-06 22:44:59,421 INFO L226 Difference]: Without dead ends: 1342 [2023-11-06 22:44:59,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 586 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=211, Invalid=1121, Unknown=0, NotChecked=0, Total=1332 [2023-11-06 22:44:59,424 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 424 mSDsluCounter, 2566 mSDsCounter, 0 mSdLazyCounter, 1960 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 2796 SdHoareTripleChecker+Invalid, 2067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:44:59,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 2796 Invalid, 2067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1960 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-06 22:44:59,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2023-11-06 22:44:59,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1003. [2023-11-06 22:44:59,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 851 states have (on average 1.3031727379553466) internal successors, (1109), 861 states have internal predecessors, (1109), 94 states have call successors, (94), 55 states have call predecessors, (94), 57 states have return successors, (98), 93 states have call predecessors, (98), 93 states have call successors, (98) [2023-11-06 22:44:59,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1301 transitions. [2023-11-06 22:44:59,565 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1301 transitions. Word has length 272 [2023-11-06 22:44:59,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:44:59,566 INFO L495 AbstractCegarLoop]: Abstraction has 1003 states and 1301 transitions. [2023-11-06 22:44:59,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.684210526315789) internal successors, (146), 14 states have internal predecessors, (146), 5 states have call successors, (28), 5 states have call predecessors, (28), 9 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) [2023-11-06 22:44:59,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1301 transitions. [2023-11-06 22:44:59,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-11-06 22:44:59,571 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:44:59,572 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:44:59,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:44:59,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:44:59,780 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:44:59,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:44:59,780 INFO L85 PathProgramCache]: Analyzing trace with hash -529372601, now seen corresponding path program 1 times [2023-11-06 22:44:59,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:44:59,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814153355] [2023-11-06 22:44:59,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:44:59,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:44:59,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:59,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:44:59,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:59,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:44:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:59,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:44:59,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:59,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:44:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:59,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:44:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:59,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:44:59,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:59,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:44:59,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:59,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:44:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:59,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:44:59,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:59,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:44:59,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:59,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:44:59,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:59,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:44:59,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:59,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-06 22:44:59,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:59,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:44:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:59,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:44:59,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:59,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:44:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:59,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-11-06 22:44:59,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:59,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-11-06 22:44:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:59,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-11-06 22:44:59,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:59,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-11-06 22:44:59,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:44:59,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-11-06 22:44:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:00,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2023-11-06 22:45:00,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:00,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2023-11-06 22:45:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:00,018 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 668 trivial. 0 not checked. [2023-11-06 22:45:00,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:00,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814153355] [2023-11-06 22:45:00,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814153355] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:45:00,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128220551] [2023-11-06 22:45:00,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:00,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:45:00,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:45:00,021 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:45:00,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:45:00,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:00,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 925 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:45:00,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:45:00,291 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2023-11-06 22:45:00,291 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:45:00,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128220551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:45:00,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:45:00,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-11-06 22:45:00,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480888980] [2023-11-06 22:45:00,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:00,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:45:00,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:00,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:45:00,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:45:00,294 INFO L87 Difference]: Start difference. First operand 1003 states and 1301 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-06 22:45:00,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:45:00,477 INFO L93 Difference]: Finished difference Result 1869 states and 2466 transitions. [2023-11-06 22:45:00,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:45:00,477 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 272 [2023-11-06 22:45:00,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:45:00,485 INFO L225 Difference]: With dead ends: 1869 [2023-11-06 22:45:00,485 INFO L226 Difference]: Without dead ends: 987 [2023-11-06 22:45:00,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:45:00,488 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 11 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:45:00,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 677 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:45:00,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2023-11-06 22:45:00,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 987. [2023-11-06 22:45:00,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 987 states, 840 states have (on average 1.2916666666666667) internal successors, (1085), 850 states have internal predecessors, (1085), 90 states have call successors, (90), 55 states have call predecessors, (90), 56 states have return successors, (93), 88 states have call predecessors, (93), 89 states have call successors, (93) [2023-11-06 22:45:00,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1268 transitions. [2023-11-06 22:45:00,614 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1268 transitions. Word has length 272 [2023-11-06 22:45:00,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:45:00,615 INFO L495 AbstractCegarLoop]: Abstraction has 987 states and 1268 transitions. [2023-11-06 22:45:00,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-06 22:45:00,615 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1268 transitions. [2023-11-06 22:45:00,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2023-11-06 22:45:00,621 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:45:00,622 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:00,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:45:00,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:45:00,829 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:45:00,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:00,830 INFO L85 PathProgramCache]: Analyzing trace with hash -608076322, now seen corresponding path program 1 times [2023-11-06 22:45:00,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:00,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924155308] [2023-11-06 22:45:00,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:00,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:00,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:45:00,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:00,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:45:00,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:00,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:45:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:00,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:45:00,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:00,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:45:00,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:00,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:45:00,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:00,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:45:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:00,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:45:00,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:00,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:45:00,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:00,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:45:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:00,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:45:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:00,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:45:00,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:00,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-06 22:45:00,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:00,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:45:00,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:01,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 22:45:01,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:01,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-06 22:45:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:01,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-11-06 22:45:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:01,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-11-06 22:45:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:01,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2023-11-06 22:45:01,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:01,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-11-06 22:45:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:01,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2023-11-06 22:45:01,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:01,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2023-11-06 22:45:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:01,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2023-11-06 22:45:01,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:01,054 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 121 proven. 19 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2023-11-06 22:45:01,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:01,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924155308] [2023-11-06 22:45:01,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924155308] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:45:01,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908141956] [2023-11-06 22:45:01,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:01,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:45:01,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:45:01,057 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:45:01,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:45:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:01,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 926 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:45:01,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:45:01,339 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2023-11-06 22:45:01,339 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:45:01,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908141956] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:45:01,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:45:01,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-11-06 22:45:01,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278756641] [2023-11-06 22:45:01,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:01,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:45:01,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:01,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:45:01,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:45:01,342 INFO L87 Difference]: Start difference. First operand 987 states and 1268 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-06 22:45:01,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:45:01,501 INFO L93 Difference]: Finished difference Result 1717 states and 2250 transitions. [2023-11-06 22:45:01,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:45:01,502 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 275 [2023-11-06 22:45:01,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:45:01,508 INFO L225 Difference]: With dead ends: 1717 [2023-11-06 22:45:01,508 INFO L226 Difference]: Without dead ends: 842 [2023-11-06 22:45:01,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:45:01,512 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 8 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:45:01,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 680 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:45:01,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2023-11-06 22:45:01,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 842. [2023-11-06 22:45:01,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 713 states have (on average 1.2931276297335204) internal successors, (922), 723 states have internal predecessors, (922), 81 states have call successors, (81), 48 states have call predecessors, (81), 47 states have return successors, (80), 77 states have call predecessors, (80), 80 states have call successors, (80) [2023-11-06 22:45:01,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1083 transitions. [2023-11-06 22:45:01,632 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1083 transitions. Word has length 275 [2023-11-06 22:45:01,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:45:01,632 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1083 transitions. [2023-11-06 22:45:01,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-06 22:45:01,633 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1083 transitions. [2023-11-06 22:45:01,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2023-11-06 22:45:01,638 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:45:01,638 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 8, 8, 8, 7, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:01,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:45:01,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:45:01,845 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:45:01,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:01,846 INFO L85 PathProgramCache]: Analyzing trace with hash 2022692593, now seen corresponding path program 1 times [2023-11-06 22:45:01,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:01,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217284124] [2023-11-06 22:45:01,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:01,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:01,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:02,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:45:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:02,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:45:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:02,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:45:02,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:02,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:45:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:02,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:45:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:02,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:45:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:02,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:45:02,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:02,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:45:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:02,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:45:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:02,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:45:02,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:02,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:45:02,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:02,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:45:02,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:02,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-06 22:45:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:02,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:45:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:02,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:45:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:02,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:45:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:02,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-11-06 22:45:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:02,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-11-06 22:45:02,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:02,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-11-06 22:45:02,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:02,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-11-06 22:45:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:02,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-11-06 22:45:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:02,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2023-11-06 22:45:02,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:02,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2023-11-06 22:45:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:02,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2023-11-06 22:45:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:02,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2023-11-06 22:45:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:02,982 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 16 proven. 146 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2023-11-06 22:45:02,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:02,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217284124] [2023-11-06 22:45:02,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217284124] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:45:02,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454727341] [2023-11-06 22:45:02,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:02,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:45:02,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:45:02,984 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:45:03,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:45:03,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:03,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-06 22:45:03,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:45:03,621 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2023-11-06 22:45:03,621 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:45:03,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454727341] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:45:03,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:45:03,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 23 [2023-11-06 22:45:03,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574646430] [2023-11-06 22:45:03,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:03,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:45:03,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:03,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:45:03,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=460, Unknown=0, NotChecked=0, Total=506 [2023-11-06 22:45:03,627 INFO L87 Difference]: Start difference. First operand 842 states and 1083 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 9 states have internal predecessors, (106), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-06 22:45:04,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:45:04,697 INFO L93 Difference]: Finished difference Result 2250 states and 2897 transitions. [2023-11-06 22:45:04,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-06 22:45:04,698 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 9 states have internal predecessors, (106), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 287 [2023-11-06 22:45:04,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:45:04,713 INFO L225 Difference]: With dead ends: 2250 [2023-11-06 22:45:04,713 INFO L226 Difference]: Without dead ends: 1777 [2023-11-06 22:45:04,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 329 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=165, Invalid=1395, Unknown=0, NotChecked=0, Total=1560 [2023-11-06 22:45:04,717 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 633 mSDsluCounter, 2246 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 2616 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:45:04,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 2616 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:45:04,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1777 states. [2023-11-06 22:45:04,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1777 to 1403. [2023-11-06 22:45:04,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1403 states, 1176 states have (on average 1.2695578231292517) internal successors, (1493), 1191 states have internal predecessors, (1493), 149 states have call successors, (149), 78 states have call predecessors, (149), 77 states have return successors, (148), 140 states have call predecessors, (148), 148 states have call successors, (148) [2023-11-06 22:45:04,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 1790 transitions. [2023-11-06 22:45:04,931 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 1790 transitions. Word has length 287 [2023-11-06 22:45:04,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:45:04,932 INFO L495 AbstractCegarLoop]: Abstraction has 1403 states and 1790 transitions. [2023-11-06 22:45:04,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 9 states have internal predecessors, (106), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-06 22:45:04,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 1790 transitions. [2023-11-06 22:45:04,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-11-06 22:45:04,935 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:45:04,936 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:04,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:45:05,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:45:05,143 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:45:05,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:05,143 INFO L85 PathProgramCache]: Analyzing trace with hash 166488814, now seen corresponding path program 1 times [2023-11-06 22:45:05,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:05,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438164374] [2023-11-06 22:45:05,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:05,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:05,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:05,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:45:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:05,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:45:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:05,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:45:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:05,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:45:05,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:05,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:45:05,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:05,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:45:05,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:05,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:45:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:05,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:45:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:05,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:45:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:05,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:45:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:05,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:45:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:05,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:45:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:05,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-06 22:45:05,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:05,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:45:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:05,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:45:05,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:05,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:45:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:05,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-11-06 22:45:05,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:05,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-11-06 22:45:05,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:05,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-11-06 22:45:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:05,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-11-06 22:45:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:05,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-11-06 22:45:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:05,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-11-06 22:45:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:05,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2023-11-06 22:45:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:05,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2023-11-06 22:45:05,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:05,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-11-06 22:45:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:05,436 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2023-11-06 22:45:05,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:05,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438164374] [2023-11-06 22:45:05,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438164374] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:45:05,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:45:05,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:45:05,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384369291] [2023-11-06 22:45:05,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:05,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:45:05,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:05,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:45:05,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:45:05,441 INFO L87 Difference]: Start difference. First operand 1403 states and 1790 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 6 states have internal predecessors, (97), 5 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-06 22:45:06,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:45:06,194 INFO L93 Difference]: Finished difference Result 2975 states and 4031 transitions. [2023-11-06 22:45:06,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:45:06,195 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 6 states have internal predecessors, (97), 5 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 293 [2023-11-06 22:45:06,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:45:06,213 INFO L225 Difference]: With dead ends: 2975 [2023-11-06 22:45:06,213 INFO L226 Difference]: Without dead ends: 1926 [2023-11-06 22:45:06,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:45:06,218 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 215 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:45:06,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 1110 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:45:06,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2023-11-06 22:45:06,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 1496. [2023-11-06 22:45:06,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1248 states have (on average 1.2804487179487178) internal successors, (1598), 1263 states have internal predecessors, (1598), 170 states have call successors, (170), 78 states have call predecessors, (170), 77 states have return successors, (169), 161 states have call predecessors, (169), 169 states have call successors, (169) [2023-11-06 22:45:06,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 1937 transitions. [2023-11-06 22:45:06,473 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 1937 transitions. Word has length 293 [2023-11-06 22:45:06,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:45:06,473 INFO L495 AbstractCegarLoop]: Abstraction has 1496 states and 1937 transitions. [2023-11-06 22:45:06,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 6 states have internal predecessors, (97), 5 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-06 22:45:06,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 1937 transitions. [2023-11-06 22:45:06,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-11-06 22:45:06,477 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:45:06,477 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:06,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-06 22:45:06,477 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:45:06,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:06,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1663926166, now seen corresponding path program 1 times [2023-11-06 22:45:06,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:06,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078395109] [2023-11-06 22:45:06,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:06,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:06,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:06,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:45:06,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:06,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:45:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:06,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:45:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:06,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:45:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:06,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:45:06,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:06,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:45:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:06,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:45:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:06,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:45:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:06,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:45:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:06,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:45:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:06,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:45:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:06,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:45:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:06,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-06 22:45:06,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:06,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:45:06,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:06,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:45:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:06,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:45:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:07,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-11-06 22:45:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:07,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-11-06 22:45:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:07,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-11-06 22:45:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:07,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-11-06 22:45:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:07,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-11-06 22:45:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:07,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-11-06 22:45:07,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:07,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2023-11-06 22:45:07,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:07,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2023-11-06 22:45:07,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:07,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-11-06 22:45:07,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:07,071 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2023-11-06 22:45:07,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:07,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078395109] [2023-11-06 22:45:07,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078395109] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:45:07,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35689380] [2023-11-06 22:45:07,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:07,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:45:07,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:45:07,090 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:45:07,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:45:07,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:07,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:45:07,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:45:07,564 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2023-11-06 22:45:07,564 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:45:07,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35689380] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:45:07,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:45:07,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 19 [2023-11-06 22:45:07,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87870272] [2023-11-06 22:45:07,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:07,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:45:07,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:07,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:45:07,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:45:07,568 INFO L87 Difference]: Start difference. First operand 1496 states and 1937 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-06 22:45:08,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:45:08,289 INFO L93 Difference]: Finished difference Result 3414 states and 4545 transitions. [2023-11-06 22:45:08,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:45:08,289 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 293 [2023-11-06 22:45:08,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:45:08,306 INFO L225 Difference]: With dead ends: 3414 [2023-11-06 22:45:08,306 INFO L226 Difference]: Without dead ends: 2279 [2023-11-06 22:45:08,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:45:08,311 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 172 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 2144 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:45:08,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 2144 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:45:08,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2279 states. [2023-11-06 22:45:08,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2279 to 1730. [2023-11-06 22:45:08,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1730 states, 1445 states have (on average 1.2705882352941176) internal successors, (1836), 1462 states have internal predecessors, (1836), 197 states have call successors, (197), 88 states have call predecessors, (197), 87 states have return successors, (196), 186 states have call predecessors, (196), 196 states have call successors, (196) [2023-11-06 22:45:08,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1730 states to 1730 states and 2229 transitions. [2023-11-06 22:45:08,585 INFO L78 Accepts]: Start accepts. Automaton has 1730 states and 2229 transitions. Word has length 293 [2023-11-06 22:45:08,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:45:08,586 INFO L495 AbstractCegarLoop]: Abstraction has 1730 states and 2229 transitions. [2023-11-06 22:45:08,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-06 22:45:08,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1730 states and 2229 transitions. [2023-11-06 22:45:08,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-11-06 22:45:08,590 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:45:08,590 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:08,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:45:08,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:45:08,797 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:45:08,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:08,798 INFO L85 PathProgramCache]: Analyzing trace with hash -988593046, now seen corresponding path program 1 times [2023-11-06 22:45:08,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:08,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31186336] [2023-11-06 22:45:08,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:08,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:45:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:45:09,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:45:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:45:09,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:45:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:45:09,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:45:09,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:45:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:45:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:45:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:45:09,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:45:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-06 22:45:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:45:09,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:45:09,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:45:09,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-11-06 22:45:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-11-06 22:45:09,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-11-06 22:45:09,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-11-06 22:45:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-11-06 22:45:09,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-11-06 22:45:09,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2023-11-06 22:45:09,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2023-11-06 22:45:09,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-11-06 22:45:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,348 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-06 22:45:09,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:09,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31186336] [2023-11-06 22:45:09,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31186336] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:45:09,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189696831] [2023-11-06 22:45:09,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:09,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:45:09,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:45:09,351 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:45:09,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:45:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:09,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-06 22:45:09,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:45:09,808 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2023-11-06 22:45:09,809 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:45:09,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189696831] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:45:09,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:45:09,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 17 [2023-11-06 22:45:09,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282714105] [2023-11-06 22:45:09,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:09,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:45:09,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:09,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:45:09,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:45:09,812 INFO L87 Difference]: Start difference. First operand 1730 states and 2229 transitions. Second operand has 10 states, 10 states have (on average 11.2) internal successors, (112), 9 states have internal predecessors, (112), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-06 22:45:11,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:45:11,135 INFO L93 Difference]: Finished difference Result 3699 states and 4869 transitions. [2023-11-06 22:45:11,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-06 22:45:11,135 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.2) internal successors, (112), 9 states have internal predecessors, (112), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 293 [2023-11-06 22:45:11,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:45:11,152 INFO L225 Difference]: With dead ends: 3699 [2023-11-06 22:45:11,152 INFO L226 Difference]: Without dead ends: 2397 [2023-11-06 22:45:11,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=168, Invalid=954, Unknown=0, NotChecked=0, Total=1122 [2023-11-06 22:45:11,157 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 725 mSDsluCounter, 2493 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 2912 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:45:11,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 2912 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 22:45:11,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2397 states. [2023-11-06 22:45:11,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2397 to 1697. [2023-11-06 22:45:11,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1697 states, 1422 states have (on average 1.2644163150492265) internal successors, (1798), 1439 states have internal predecessors, (1798), 187 states have call successors, (187), 88 states have call predecessors, (187), 87 states have return successors, (186), 176 states have call predecessors, (186), 186 states have call successors, (186) [2023-11-06 22:45:11,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 2171 transitions. [2023-11-06 22:45:11,434 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 2171 transitions. Word has length 293 [2023-11-06 22:45:11,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:45:11,435 INFO L495 AbstractCegarLoop]: Abstraction has 1697 states and 2171 transitions. [2023-11-06 22:45:11,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.2) internal successors, (112), 9 states have internal predecessors, (112), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-06 22:45:11,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 2171 transitions. [2023-11-06 22:45:11,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-11-06 22:45:11,439 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:45:11,439 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:11,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:45:11,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-06 22:45:11,646 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:45:11,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:11,646 INFO L85 PathProgramCache]: Analyzing trace with hash -709986008, now seen corresponding path program 1 times [2023-11-06 22:45:11,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:11,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120688982] [2023-11-06 22:45:11,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:11,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:11,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:11,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:45:11,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:11,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:45:11,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:11,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:45:11,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:11,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:45:11,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:11,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:45:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:11,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:45:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:11,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:45:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:11,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:45:11,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:11,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:45:11,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:11,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:45:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:11,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:45:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:11,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:45:11,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:11,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-06 22:45:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:11,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:45:11,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:11,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:45:11,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:11,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:45:11,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:11,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-11-06 22:45:11,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:11,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-11-06 22:45:11,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:11,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-11-06 22:45:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:11,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-11-06 22:45:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:11,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-11-06 22:45:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:11,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-11-06 22:45:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:11,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2023-11-06 22:45:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:11,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2023-11-06 22:45:11,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:11,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-11-06 22:45:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:11,908 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2023-11-06 22:45:11,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:11,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120688982] [2023-11-06 22:45:11,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120688982] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:45:11,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:45:11,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:45:11,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728231102] [2023-11-06 22:45:11,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:11,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:45:11,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:11,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:45:11,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:45:11,913 INFO L87 Difference]: Start difference. First operand 1697 states and 2171 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-06 22:45:12,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:45:12,815 INFO L93 Difference]: Finished difference Result 3298 states and 4267 transitions. [2023-11-06 22:45:12,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:45:12,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 293 [2023-11-06 22:45:12,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:45:12,831 INFO L225 Difference]: With dead ends: 3298 [2023-11-06 22:45:12,831 INFO L226 Difference]: Without dead ends: 1973 [2023-11-06 22:45:12,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:45:12,837 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 302 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:45:12,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 574 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:45:12,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1973 states. [2023-11-06 22:45:13,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1973 to 1726. [2023-11-06 22:45:13,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1443 states have (on average 1.2674982674982676) internal successors, (1829), 1460 states have internal predecessors, (1829), 195 states have call successors, (195), 88 states have call predecessors, (195), 87 states have return successors, (194), 184 states have call predecessors, (194), 194 states have call successors, (194) [2023-11-06 22:45:13,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2218 transitions. [2023-11-06 22:45:13,089 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2218 transitions. Word has length 293 [2023-11-06 22:45:13,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:45:13,090 INFO L495 AbstractCegarLoop]: Abstraction has 1726 states and 2218 transitions. [2023-11-06 22:45:13,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-06 22:45:13,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2218 transitions. [2023-11-06 22:45:13,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2023-11-06 22:45:13,094 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:45:13,094 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:13,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-11-06 22:45:13,095 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:45:13,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:13,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1210164841, now seen corresponding path program 1 times [2023-11-06 22:45:13,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:13,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565030135] [2023-11-06 22:45:13,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:13,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:13,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:45:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:13,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:45:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:13,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:45:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:13,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:45:13,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:13,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:45:13,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:13,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:45:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:13,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:45:13,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:13,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:45:13,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:13,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:45:13,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:13,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:45:13,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:13,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:45:13,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:13,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:45:13,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:13,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-06 22:45:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:13,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:45:13,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:13,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:45:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:13,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:45:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:13,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-11-06 22:45:13,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:13,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-11-06 22:45:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:13,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-11-06 22:45:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:13,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-11-06 22:45:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:13,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-11-06 22:45:13,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:13,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2023-11-06 22:45:13,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:13,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-11-06 22:45:13,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:13,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2023-11-06 22:45:13,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:13,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2023-11-06 22:45:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:13,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-11-06 22:45:13,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:13,330 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 704 trivial. 0 not checked. [2023-11-06 22:45:13,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:13,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565030135] [2023-11-06 22:45:13,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565030135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:45:13,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:45:13,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:45:13,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901791163] [2023-11-06 22:45:13,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:13,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:45:13,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:13,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:45:13,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:45:13,334 INFO L87 Difference]: Start difference. First operand 1726 states and 2218 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:45:14,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:45:14,258 INFO L93 Difference]: Finished difference Result 3092 states and 4006 transitions. [2023-11-06 22:45:14,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:45:14,259 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 301 [2023-11-06 22:45:14,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:45:14,284 INFO L225 Difference]: With dead ends: 3092 [2023-11-06 22:45:14,285 INFO L226 Difference]: Without dead ends: 1730 [2023-11-06 22:45:14,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:45:14,291 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 477 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:45:14,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 803 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:45:14,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2023-11-06 22:45:14,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 1491. [2023-11-06 22:45:14,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1491 states, 1257 states have (on average 1.249005568814638) internal successors, (1570), 1265 states have internal predecessors, (1570), 163 states have call successors, (163), 70 states have call predecessors, (163), 70 states have return successors, (163), 155 states have call predecessors, (163), 163 states have call successors, (163) [2023-11-06 22:45:14,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1491 states to 1491 states and 1896 transitions. [2023-11-06 22:45:14,461 INFO L78 Accepts]: Start accepts. Automaton has 1491 states and 1896 transitions. Word has length 301 [2023-11-06 22:45:14,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:45:14,462 INFO L495 AbstractCegarLoop]: Abstraction has 1491 states and 1896 transitions. [2023-11-06 22:45:14,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-06 22:45:14,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1491 states and 1896 transitions. [2023-11-06 22:45:14,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2023-11-06 22:45:14,468 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:45:14,468 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:14,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-11-06 22:45:14,468 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:45:14,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:14,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1939280305, now seen corresponding path program 1 times [2023-11-06 22:45:14,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:14,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169025596] [2023-11-06 22:45:14,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:14,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:15,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:45:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:15,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:45:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:15,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:45:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:15,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:45:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:15,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:45:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:15,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:45:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:15,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:45:15,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:15,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:45:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:15,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:45:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:15,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:45:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:15,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:45:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:15,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:45:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:15,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-06 22:45:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:15,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:45:15,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:15,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:45:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:15,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:45:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:15,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-11-06 22:45:15,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:15,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-11-06 22:45:15,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:15,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-11-06 22:45:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:15,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-11-06 22:45:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:15,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-11-06 22:45:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:15,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2023-11-06 22:45:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:15,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-11-06 22:45:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:15,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2023-11-06 22:45:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:15,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-11-06 22:45:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:15,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2023-11-06 22:45:15,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:15,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2023-11-06 22:45:15,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:15,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2023-11-06 22:45:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:15,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2023-11-06 22:45:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:15,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2023-11-06 22:45:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:15,445 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2023-11-06 22:45:15,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:15,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169025596] [2023-11-06 22:45:15,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169025596] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:45:15,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893236502] [2023-11-06 22:45:15,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:15,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:45:15,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:45:15,448 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:45:15,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 22:45:15,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:15,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-06 22:45:15,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:45:16,196 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 224 proven. 76 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2023-11-06 22:45:16,196 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:45:16,974 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 34 proven. 72 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2023-11-06 22:45:16,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893236502] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:45:16,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:45:16,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 28 [2023-11-06 22:45:16,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939482330] [2023-11-06 22:45:16,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:45:16,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-06 22:45:16,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:16,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-06 22:45:16,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2023-11-06 22:45:16,979 INFO L87 Difference]: Start difference. First operand 1491 states and 1896 transitions. Second operand has 28 states, 28 states have (on average 8.785714285714286) internal successors, (246), 24 states have internal predecessors, (246), 8 states have call successors, (51), 9 states have call predecessors, (51), 13 states have return successors, (51), 11 states have call predecessors, (51), 8 states have call successors, (51) [2023-11-06 22:45:32,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:45:32,745 INFO L93 Difference]: Finished difference Result 10877 states and 14719 transitions. [2023-11-06 22:45:32,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2023-11-06 22:45:32,746 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 8.785714285714286) internal successors, (246), 24 states have internal predecessors, (246), 8 states have call successors, (51), 9 states have call predecessors, (51), 13 states have return successors, (51), 11 states have call predecessors, (51), 8 states have call successors, (51) Word has length 342 [2023-11-06 22:45:32,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:45:32,802 INFO L225 Difference]: With dead ends: 10877 [2023-11-06 22:45:32,802 INFO L226 Difference]: Without dead ends: 9694 [2023-11-06 22:45:32,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 947 GetRequests, 731 SyntacticMatches, 8 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16093 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=4843, Invalid=39047, Unknown=0, NotChecked=0, Total=43890 [2023-11-06 22:45:32,825 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 5387 mSDsluCounter, 6559 mSDsCounter, 0 mSdLazyCounter, 5898 mSolverCounterSat, 1622 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5387 SdHoareTripleChecker+Valid, 7144 SdHoareTripleChecker+Invalid, 7520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1622 IncrementalHoareTripleChecker+Valid, 5898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:45:32,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5387 Valid, 7144 Invalid, 7520 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1622 Valid, 5898 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-11-06 22:45:32,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9694 states. [2023-11-06 22:45:33,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9694 to 6031. [2023-11-06 22:45:33,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6031 states, 4783 states have (on average 1.2786953794689526) internal successors, (6116), 4837 states have internal predecessors, (6116), 891 states have call successors, (891), 332 states have call predecessors, (891), 356 states have return successors, (939), 861 states have call predecessors, (939), 891 states have call successors, (939) [2023-11-06 22:45:33,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6031 states to 6031 states and 7946 transitions. [2023-11-06 22:45:33,983 INFO L78 Accepts]: Start accepts. Automaton has 6031 states and 7946 transitions. Word has length 342 [2023-11-06 22:45:33,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:45:33,984 INFO L495 AbstractCegarLoop]: Abstraction has 6031 states and 7946 transitions. [2023-11-06 22:45:33,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 8.785714285714286) internal successors, (246), 24 states have internal predecessors, (246), 8 states have call successors, (51), 9 states have call predecessors, (51), 13 states have return successors, (51), 11 states have call predecessors, (51), 8 states have call successors, (51) [2023-11-06 22:45:33,984 INFO L276 IsEmpty]: Start isEmpty. Operand 6031 states and 7946 transitions. [2023-11-06 22:45:34,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2023-11-06 22:45:34,003 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:45:34,004 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:34,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:45:34,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-06 22:45:34,211 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:45:34,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:34,212 INFO L85 PathProgramCache]: Analyzing trace with hash -342068432, now seen corresponding path program 1 times [2023-11-06 22:45:34,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:34,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108462339] [2023-11-06 22:45:34,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:34,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:45:34,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:45:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:45:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:45:34,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:45:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:45:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:45:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:45:34,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:45:34,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:45:34,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:45:34,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:45:34,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-06 22:45:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:45:34,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:45:34,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:45:34,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-11-06 22:45:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-11-06 22:45:34,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-11-06 22:45:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-11-06 22:45:34,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-11-06 22:45:34,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2023-11-06 22:45:34,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-11-06 22:45:34,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2023-11-06 22:45:34,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-11-06 22:45:34,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2023-11-06 22:45:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2023-11-06 22:45:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2023-11-06 22:45:34,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2023-11-06 22:45:34,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2023-11-06 22:45:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,503 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 44 proven. 5 refuted. 0 times theorem prover too weak. 827 trivial. 0 not checked. [2023-11-06 22:45:34,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:34,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108462339] [2023-11-06 22:45:34,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108462339] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:45:34,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882541811] [2023-11-06 22:45:34,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:34,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:45:34,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:45:34,509 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:45:34,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-06 22:45:34,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:34,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 1255 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:45:34,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:45:34,937 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 711 trivial. 0 not checked. [2023-11-06 22:45:34,938 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:45:34,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882541811] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:45:34,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:45:34,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2023-11-06 22:45:34,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598889529] [2023-11-06 22:45:34,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:45:34,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:45:34,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:34,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:45:34,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:45:34,941 INFO L87 Difference]: Start difference. First operand 6031 states and 7946 transitions. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 7 states have internal predecessors, (125), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-06 22:45:36,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:45:36,381 INFO L93 Difference]: Finished difference Result 13030 states and 17276 transitions. [2023-11-06 22:45:36,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:45:36,382 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 7 states have internal predecessors, (125), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 342 [2023-11-06 22:45:36,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:45:36,414 INFO L225 Difference]: With dead ends: 13030 [2023-11-06 22:45:36,414 INFO L226 Difference]: Without dead ends: 7490 [2023-11-06 22:45:36,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:45:36,429 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 165 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 2135 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:45:36,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 2135 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:45:36,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7490 states. [2023-11-06 22:45:37,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7490 to 4294. [2023-11-06 22:45:37,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4294 states, 3457 states have (on average 1.253398900781024) internal successors, (4333), 3505 states have internal predecessors, (4333), 570 states have call successors, (570), 245 states have call predecessors, (570), 266 states have return successors, (600), 543 states have call predecessors, (600), 570 states have call successors, (600) [2023-11-06 22:45:37,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4294 states to 4294 states and 5503 transitions. [2023-11-06 22:45:37,178 INFO L78 Accepts]: Start accepts. Automaton has 4294 states and 5503 transitions. Word has length 342 [2023-11-06 22:45:37,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:45:37,179 INFO L495 AbstractCegarLoop]: Abstraction has 4294 states and 5503 transitions. [2023-11-06 22:45:37,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 7 states have internal predecessors, (125), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-06 22:45:37,180 INFO L276 IsEmpty]: Start isEmpty. Operand 4294 states and 5503 transitions. [2023-11-06 22:45:37,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2023-11-06 22:45:37,193 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:45:37,193 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:45:37,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-06 22:45:37,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-06 22:45:37,400 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:45:37,400 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:45:37,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1883522428, now seen corresponding path program 1 times [2023-11-06 22:45:37,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:45:37,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392895238] [2023-11-06 22:45:37,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:37,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:45:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:38,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:45:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:38,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:45:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:38,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:45:38,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:38,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:45:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:38,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:45:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:38,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:45:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:38,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:45:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:38,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:45:38,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:38,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:45:38,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:38,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:45:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:38,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:45:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:38,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:45:38,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:38,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-06 22:45:38,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:38,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:45:38,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:38,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:45:38,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:38,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:45:38,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:38,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-11-06 22:45:38,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:38,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-11-06 22:45:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:38,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-11-06 22:45:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:38,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-11-06 22:45:38,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:38,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-11-06 22:45:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:38,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-11-06 22:45:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:38,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2023-11-06 22:45:38,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:38,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2023-11-06 22:45:38,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:38,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-11-06 22:45:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:38,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2023-11-06 22:45:38,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:38,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2023-11-06 22:45:38,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:38,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-06 22:45:38,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:38,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2023-11-06 22:45:38,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:38,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-06 22:45:38,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:38,764 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2023-11-06 22:45:38,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:45:38,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392895238] [2023-11-06 22:45:38,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392895238] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:45:38,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292978921] [2023-11-06 22:45:38,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:45:38,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:45:38,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:45:38,766 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:45:38,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-06 22:45:39,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:45:39,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 1258 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-06 22:45:39,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:45:39,573 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 190 proven. 103 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2023-11-06 22:45:39,573 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:45:40,358 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 33 proven. 70 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2023-11-06 22:45:40,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292978921] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:45:40,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:45:40,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 30 [2023-11-06 22:45:40,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344772116] [2023-11-06 22:45:40,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:45:40,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-06 22:45:40,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:45:40,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-06 22:45:40,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=788, Unknown=0, NotChecked=0, Total=870 [2023-11-06 22:45:40,365 INFO L87 Difference]: Start difference. First operand 4294 states and 5503 transitions. Second operand has 30 states, 30 states have (on average 8.366666666666667) internal successors, (251), 26 states have internal predecessors, (251), 9 states have call successors, (54), 9 states have call predecessors, (54), 13 states have return successors, (54), 12 states have call predecessors, (54), 9 states have call successors, (54) [2023-11-06 22:46:40,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:46:40,511 INFO L93 Difference]: Finished difference Result 18577 states and 23907 transitions. [2023-11-06 22:46:40,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 474 states. [2023-11-06 22:46:40,512 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 8.366666666666667) internal successors, (251), 26 states have internal predecessors, (251), 9 states have call successors, (54), 9 states have call predecessors, (54), 13 states have return successors, (54), 12 states have call predecessors, (54), 9 states have call successors, (54) Word has length 343 [2023-11-06 22:46:40,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:46:40,561 INFO L225 Difference]: With dead ends: 18577 [2023-11-06 22:46:40,561 INFO L226 Difference]: Without dead ends: 14774 [2023-11-06 22:46:40,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1252 GetRequests, 751 SyntacticMatches, 1 SemanticMatches, 500 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110127 ImplicationChecksByTransitivity, 42.1s TimeCoverageRelationStatistics Valid=18876, Invalid=232626, Unknown=0, NotChecked=0, Total=251502 [2023-11-06 22:46:40,612 INFO L413 NwaCegarLoop]: 1116 mSDtfsCounter, 5852 mSDsluCounter, 13475 mSDsCounter, 0 mSdLazyCounter, 13850 mSolverCounterSat, 1607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5852 SdHoareTripleChecker+Valid, 14591 SdHoareTripleChecker+Invalid, 15457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1607 IncrementalHoareTripleChecker+Valid, 13850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:46:40,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5852 Valid, 14591 Invalid, 15457 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1607 Valid, 13850 Invalid, 0 Unknown, 0 Unchecked, 13.3s Time] [2023-11-06 22:46:40,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14774 states. [2023-11-06 22:46:42,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14774 to 7525. [2023-11-06 22:46:42,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7525 states, 6054 states have (on average 1.2553683515031384) internal successors, (7600), 6139 states have internal predecessors, (7600), 981 states have call successors, (981), 434 states have call predecessors, (981), 489 states have return successors, (1066), 951 states have call predecessors, (1066), 981 states have call successors, (1066) [2023-11-06 22:46:42,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7525 states to 7525 states and 9647 transitions. [2023-11-06 22:46:42,540 INFO L78 Accepts]: Start accepts. Automaton has 7525 states and 9647 transitions. Word has length 343 [2023-11-06 22:46:42,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:46:42,541 INFO L495 AbstractCegarLoop]: Abstraction has 7525 states and 9647 transitions. [2023-11-06 22:46:42,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 8.366666666666667) internal successors, (251), 26 states have internal predecessors, (251), 9 states have call successors, (54), 9 states have call predecessors, (54), 13 states have return successors, (54), 12 states have call predecessors, (54), 9 states have call successors, (54) [2023-11-06 22:46:42,541 INFO L276 IsEmpty]: Start isEmpty. Operand 7525 states and 9647 transitions. [2023-11-06 22:46:42,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2023-11-06 22:46:42,563 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:46:42,563 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:42,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:42,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:46:42,771 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:46:42,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:42,772 INFO L85 PathProgramCache]: Analyzing trace with hash 113194551, now seen corresponding path program 1 times [2023-11-06 22:46:42,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:42,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772194620] [2023-11-06 22:46:42,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:42,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:42,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:42,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:46:42,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:42,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:46:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:42,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:46:42,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:42,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:46:42,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:42,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:46:42,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:42,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:46:42,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:42,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:46:42,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:42,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:46:42,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:42,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:46:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:42,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:46:42,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:42,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:46:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:42,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:46:42,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:42,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-06 22:46:42,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:42,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:46:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:42,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:46:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:42,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:46:42,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:42,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-11-06 22:46:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:42,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2023-11-06 22:46:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:42,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2023-11-06 22:46:42,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:43,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-11-06 22:46:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:43,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-11-06 22:46:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:43,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-11-06 22:46:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:43,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2023-11-06 22:46:43,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:43,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2023-11-06 22:46:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:43,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-11-06 22:46:43,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:43,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2023-11-06 22:46:43,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:43,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2023-11-06 22:46:43,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:43,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-06 22:46:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:43,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2023-11-06 22:46:43,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:43,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-06 22:46:43,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:43,042 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 44 proven. 5 refuted. 0 times theorem prover too weak. 827 trivial. 0 not checked. [2023-11-06 22:46:43,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:43,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772194620] [2023-11-06 22:46:43,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772194620] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:46:43,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145191616] [2023-11-06 22:46:43,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:43,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:46:43,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:43,044 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:46:43,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-06 22:46:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:43,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:46:43,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:43,369 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2023-11-06 22:46:43,369 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:46:43,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145191616] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:46:43,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:46:43,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-11-06 22:46:43,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021929340] [2023-11-06 22:46:43,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:46:43,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:46:43,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:43,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:46:43,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:46:43,372 INFO L87 Difference]: Start difference. First operand 7525 states and 9647 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-06 22:46:45,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:46:45,062 INFO L93 Difference]: Finished difference Result 15293 states and 19572 transitions. [2023-11-06 22:46:45,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:46:45,062 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 343 [2023-11-06 22:46:45,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:46:45,093 INFO L225 Difference]: With dead ends: 15293 [2023-11-06 22:46:45,094 INFO L226 Difference]: Without dead ends: 7345 [2023-11-06 22:46:45,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:46:45,108 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 40 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:46:45,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 636 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:46:45,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7345 states. [2023-11-06 22:46:46,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7345 to 7345. [2023-11-06 22:46:46,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7345 states, 5929 states have (on average 1.2180806206780233) internal successors, (7222), 5994 states have internal predecessors, (7222), 981 states have call successors, (981), 434 states have call predecessors, (981), 434 states have return successors, (981), 916 states have call predecessors, (981), 981 states have call successors, (981) [2023-11-06 22:46:46,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7345 states to 7345 states and 9184 transitions. [2023-11-06 22:46:46,746 INFO L78 Accepts]: Start accepts. Automaton has 7345 states and 9184 transitions. Word has length 343 [2023-11-06 22:46:46,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:46:46,747 INFO L495 AbstractCegarLoop]: Abstraction has 7345 states and 9184 transitions. [2023-11-06 22:46:46,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-06 22:46:46,747 INFO L276 IsEmpty]: Start isEmpty. Operand 7345 states and 9184 transitions. [2023-11-06 22:46:46,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2023-11-06 22:46:46,771 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:46:46,771 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:46:46,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-06 22:46:46,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2023-11-06 22:46:46,978 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:46:46,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:46:46,978 INFO L85 PathProgramCache]: Analyzing trace with hash -231239875, now seen corresponding path program 1 times [2023-11-06 22:46:46,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:46:46,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622422997] [2023-11-06 22:46:46,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:46,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:46:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:47,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:46:47,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:47,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:46:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:47,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:46:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:47,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:46:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:47,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:46:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:47,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:46:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:47,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:46:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:47,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:46:47,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:47,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:46:47,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:47,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:46:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:47,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:46:47,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:47,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:46:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:47,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-06 22:46:47,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:47,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:46:47,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:47,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:46:47,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:47,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:46:47,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:47,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-11-06 22:46:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:47,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2023-11-06 22:46:47,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:47,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2023-11-06 22:46:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:47,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-11-06 22:46:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:47,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-11-06 22:46:47,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:47,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-11-06 22:46:47,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:47,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2023-11-06 22:46:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:47,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2023-11-06 22:46:47,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:47,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-11-06 22:46:47,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:47,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2023-11-06 22:46:47,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:47,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2023-11-06 22:46:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:47,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-06 22:46:47,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:47,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2023-11-06 22:46:47,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:47,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2023-11-06 22:46:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:47,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2023-11-06 22:46:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:47,884 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 902 trivial. 0 not checked. [2023-11-06 22:46:47,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:46:47,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622422997] [2023-11-06 22:46:47,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622422997] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:46:47,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457138061] [2023-11-06 22:46:47,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:46:47,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:46:47,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:46:47,887 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:46:47,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-06 22:46:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:46:48,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 1283 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-06 22:46:48,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:46:48,796 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 288 proven. 92 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2023-11-06 22:46:48,797 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:46:49,587 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 46 proven. 199 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2023-11-06 22:46:49,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457138061] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:46:49,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:46:49,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 18] total 34 [2023-11-06 22:46:49,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125202021] [2023-11-06 22:46:49,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:46:49,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-06 22:46:49,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:46:49,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-06 22:46:49,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1029, Unknown=0, NotChecked=0, Total=1122 [2023-11-06 22:46:49,593 INFO L87 Difference]: Start difference. First operand 7345 states and 9184 transitions. Second operand has 34 states, 33 states have (on average 8.424242424242424) internal successors, (278), 29 states have internal predecessors, (278), 11 states have call successors, (61), 10 states have call predecessors, (61), 11 states have return successors, (60), 11 states have call predecessors, (60), 10 states have call successors, (60) [2023-11-06 22:47:07,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:47:07,355 INFO L93 Difference]: Finished difference Result 31557 states and 42288 transitions. [2023-11-06 22:47:07,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2023-11-06 22:47:07,355 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 8.424242424242424) internal successors, (278), 29 states have internal predecessors, (278), 11 states have call successors, (61), 10 states have call predecessors, (61), 11 states have return successors, (60), 11 states have call predecessors, (60), 10 states have call successors, (60) Word has length 353 [2023-11-06 22:47:07,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:47:07,444 INFO L225 Difference]: With dead ends: 31557 [2023-11-06 22:47:07,445 INFO L226 Difference]: Without dead ends: 24792 [2023-11-06 22:47:07,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 933 GetRequests, 762 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10385 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=2761, Invalid=26995, Unknown=0, NotChecked=0, Total=29756 [2023-11-06 22:47:07,464 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 5291 mSDsluCounter, 6947 mSDsCounter, 0 mSdLazyCounter, 5497 mSolverCounterSat, 1419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5304 SdHoareTripleChecker+Valid, 7311 SdHoareTripleChecker+Invalid, 6916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1419 IncrementalHoareTripleChecker+Valid, 5497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:47:07,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5304 Valid, 7311 Invalid, 6916 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1419 Valid, 5497 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-06 22:47:07,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24792 states. [2023-11-06 22:47:09,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24792 to 7760. [2023-11-06 22:47:09,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7760 states, 6290 states have (on average 1.2131955484896662) internal successors, (7631), 6355 states have internal predecessors, (7631), 1010 states have call successors, (1010), 457 states have call predecessors, (1010), 459 states have return successors, (1014), 947 states have call predecessors, (1014), 1010 states have call successors, (1014) [2023-11-06 22:47:09,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7760 states to 7760 states and 9655 transitions. [2023-11-06 22:47:09,859 INFO L78 Accepts]: Start accepts. Automaton has 7760 states and 9655 transitions. Word has length 353 [2023-11-06 22:47:09,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:47:09,860 INFO L495 AbstractCegarLoop]: Abstraction has 7760 states and 9655 transitions. [2023-11-06 22:47:09,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 8.424242424242424) internal successors, (278), 29 states have internal predecessors, (278), 11 states have call successors, (61), 10 states have call predecessors, (61), 11 states have return successors, (60), 11 states have call predecessors, (60), 10 states have call successors, (60) [2023-11-06 22:47:09,861 INFO L276 IsEmpty]: Start isEmpty. Operand 7760 states and 9655 transitions. [2023-11-06 22:47:09,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2023-11-06 22:47:09,884 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:47:09,884 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:09,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-06 22:47:10,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:10,092 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:47:10,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:10,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1356544257, now seen corresponding path program 1 times [2023-11-06 22:47:10,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:10,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129535451] [2023-11-06 22:47:10,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:10,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:10,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:10,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:47:10,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:10,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:47:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:10,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-06 22:47:10,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:10,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-06 22:47:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:10,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-06 22:47:10,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:10,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:47:10,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:10,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:47:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:10,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:47:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:10,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-06 22:47:10,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:10,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:47:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:10,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:47:10,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:10,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:47:10,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:10,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-11-06 22:47:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:10,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:47:10,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:10,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:47:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:10,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:47:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:10,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-11-06 22:47:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:10,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-11-06 22:47:10,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:10,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-11-06 22:47:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:10,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-11-06 22:47:10,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:10,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-11-06 22:47:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:10,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-11-06 22:47:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:10,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-11-06 22:47:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:10,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2023-11-06 22:47:10,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:10,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-11-06 22:47:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:10,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2023-11-06 22:47:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:10,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2023-11-06 22:47:10,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:10,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2023-11-06 22:47:10,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:10,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2023-11-06 22:47:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:10,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2023-11-06 22:47:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:10,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2023-11-06 22:47:10,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:10,326 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 9 proven. 136 refuted. 0 times theorem prover too weak. 797 trivial. 0 not checked. [2023-11-06 22:47:10,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:10,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129535451] [2023-11-06 22:47:10,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129535451] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:47:10,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907605923] [2023-11-06 22:47:10,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:10,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:10,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:47:10,328 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:47:10,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-06 22:47:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:10,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 1283 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:47:10,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:47:10,669 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 853 trivial. 0 not checked. [2023-11-06 22:47:10,669 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:47:10,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907605923] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:10,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:47:10,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-11-06 22:47:10,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386469536] [2023-11-06 22:47:10,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:10,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:47:10,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:10,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:47:10,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:47:10,672 INFO L87 Difference]: Start difference. First operand 7760 states and 9655 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-06 22:47:12,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:47:12,525 INFO L93 Difference]: Finished difference Result 15106 states and 18839 transitions. [2023-11-06 22:47:12,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:47:12,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 357 [2023-11-06 22:47:12,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:47:12,551 INFO L225 Difference]: With dead ends: 15106 [2023-11-06 22:47:12,552 INFO L226 Difference]: Without dead ends: 7347 [2023-11-06 22:47:12,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:47:12,563 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 28 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:47:12,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 643 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:47:12,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7347 states. [2023-11-06 22:47:14,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7347 to 7347. [2023-11-06 22:47:14,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7347 states, 5930 states have (on average 1.2166947723440136) internal successors, (7215), 5995 states have internal predecessors, (7215), 981 states have call successors, (981), 435 states have call predecessors, (981), 435 states have return successors, (981), 916 states have call predecessors, (981), 981 states have call successors, (981) [2023-11-06 22:47:14,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7347 states to 7347 states and 9177 transitions. [2023-11-06 22:47:14,314 INFO L78 Accepts]: Start accepts. Automaton has 7347 states and 9177 transitions. Word has length 357 [2023-11-06 22:47:14,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:47:14,314 INFO L495 AbstractCegarLoop]: Abstraction has 7347 states and 9177 transitions. [2023-11-06 22:47:14,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-06 22:47:14,314 INFO L276 IsEmpty]: Start isEmpty. Operand 7347 states and 9177 transitions. [2023-11-06 22:47:14,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2023-11-06 22:47:14,332 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:47:14,333 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 12, 12, 9, 8, 7, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:14,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-06 22:47:14,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-11-06 22:47:14,540 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:47:14,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:14,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1752121610, now seen corresponding path program 1 times [2023-11-06 22:47:14,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:14,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740776626] [2023-11-06 22:47:14,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:14,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:15,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:47:15,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:15,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:47:15,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:15,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:47:15,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:15,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:47:15,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:15,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:47:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:15,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:47:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:15,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:47:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:15,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:47:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:15,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:47:15,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:15,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:47:15,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:15,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:47:15,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:15,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:47:15,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:15,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-06 22:47:15,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:15,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:47:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:15,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:47:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:15,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:47:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:15,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-11-06 22:47:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:15,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-11-06 22:47:15,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:15,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2023-11-06 22:47:15,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:15,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2023-11-06 22:47:15,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:15,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2023-11-06 22:47:15,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:15,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2023-11-06 22:47:15,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:15,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2023-11-06 22:47:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:15,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2023-11-06 22:47:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:15,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2023-11-06 22:47:15,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:15,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2023-11-06 22:47:15,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:15,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2023-11-06 22:47:15,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:15,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-06 22:47:15,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:15,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2023-11-06 22:47:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:15,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2023-11-06 22:47:15,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:15,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-06 22:47:15,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:15,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2023-11-06 22:47:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:15,577 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 22 proven. 26 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-06 22:47:15,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:15,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740776626] [2023-11-06 22:47:15,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740776626] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:47:15,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067601364] [2023-11-06 22:47:15,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:15,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:15,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:47:15,579 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:47:15,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-06 22:47:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:15,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 1308 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-06 22:47:15,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:47:17,786 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 472 proven. 210 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-06 22:47:17,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:47:19,676 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 102 proven. 194 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2023-11-06 22:47:19,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067601364] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:47:19,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:47:19,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 27, 22] total 64 [2023-11-06 22:47:19,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206752377] [2023-11-06 22:47:19,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:47:19,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-11-06 22:47:19,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:19,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-11-06 22:47:19,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=3790, Unknown=0, NotChecked=0, Total=4032 [2023-11-06 22:47:19,682 INFO L87 Difference]: Start difference. First operand 7347 states and 9177 transitions. Second operand has 64 states, 64 states have (on average 5.859375) internal successors, (375), 55 states have internal predecessors, (375), 18 states have call successors, (67), 13 states have call predecessors, (67), 19 states have return successors, (70), 24 states have call predecessors, (70), 18 states have call successors, (70) [2023-11-06 22:47:46,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:47:46,141 INFO L93 Difference]: Finished difference Result 30556 states and 40235 transitions. [2023-11-06 22:47:46,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2023-11-06 22:47:46,142 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 5.859375) internal successors, (375), 55 states have internal predecessors, (375), 18 states have call successors, (67), 13 states have call predecessors, (67), 19 states have return successors, (70), 24 states have call predecessors, (70), 18 states have call successors, (70) Word has length 364 [2023-11-06 22:47:46,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:47:46,204 INFO L225 Difference]: With dead ends: 30556 [2023-11-06 22:47:46,204 INFO L226 Difference]: Without dead ends: 23791 [2023-11-06 22:47:46,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 976 GetRequests, 765 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12924 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=2839, Invalid=42317, Unknown=0, NotChecked=0, Total=45156 [2023-11-06 22:47:46,222 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 2102 mSDsluCounter, 21065 mSDsCounter, 0 mSdLazyCounter, 19291 mSolverCounterSat, 571 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2117 SdHoareTripleChecker+Valid, 21662 SdHoareTripleChecker+Invalid, 19862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 571 IncrementalHoareTripleChecker+Valid, 19291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:47:46,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2117 Valid, 21662 Invalid, 19862 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [571 Valid, 19291 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2023-11-06 22:47:46,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23791 states. [2023-11-06 22:47:48,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23791 to 8381. [2023-11-06 22:47:48,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8381 states, 6786 states have (on average 1.21455938697318) internal successors, (8242), 6858 states have internal predecessors, (8242), 1096 states have call successors, (1096), 498 states have call predecessors, (1096), 498 states have return successors, (1096), 1024 states have call predecessors, (1096), 1096 states have call successors, (1096) [2023-11-06 22:47:48,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8381 states to 8381 states and 10434 transitions. [2023-11-06 22:47:48,692 INFO L78 Accepts]: Start accepts. Automaton has 8381 states and 10434 transitions. Word has length 364 [2023-11-06 22:47:48,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:47:48,693 INFO L495 AbstractCegarLoop]: Abstraction has 8381 states and 10434 transitions. [2023-11-06 22:47:48,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 5.859375) internal successors, (375), 55 states have internal predecessors, (375), 18 states have call successors, (67), 13 states have call predecessors, (67), 19 states have return successors, (70), 24 states have call predecessors, (70), 18 states have call successors, (70) [2023-11-06 22:47:48,693 INFO L276 IsEmpty]: Start isEmpty. Operand 8381 states and 10434 transitions. [2023-11-06 22:47:48,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2023-11-06 22:47:48,709 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:47:48,709 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 9, 9, 7, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:48,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-06 22:47:48,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:48,910 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:47:48,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:48,910 INFO L85 PathProgramCache]: Analyzing trace with hash 757366496, now seen corresponding path program 1 times [2023-11-06 22:47:48,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:48,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119814544] [2023-11-06 22:47:48,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:48,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:49,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:47:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:49,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:47:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:49,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:47:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:49,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:47:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:49,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:47:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:49,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:47:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:49,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:47:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:49,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:47:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:49,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:47:49,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:49,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:47:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:49,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:47:49,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:49,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:47:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:49,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-06 22:47:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:49,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:47:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:49,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:47:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:49,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:47:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:49,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-11-06 22:47:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:49,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-11-06 22:47:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:49,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-11-06 22:47:49,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:49,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-11-06 22:47:49,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:49,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-11-06 22:47:49,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:49,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2023-11-06 22:47:49,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:49,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2023-11-06 22:47:49,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:49,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2023-11-06 22:47:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:49,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-11-06 22:47:49,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:49,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2023-11-06 22:47:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:49,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2023-11-06 22:47:49,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:49,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2023-11-06 22:47:49,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:49,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2023-11-06 22:47:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:49,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2023-11-06 22:47:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:49,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2023-11-06 22:47:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:49,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2023-11-06 22:47:49,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:49,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2023-11-06 22:47:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:49,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1063 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked. [2023-11-06 22:47:49,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:49,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119814544] [2023-11-06 22:47:49,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119814544] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:49,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:49,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:47:49,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873707249] [2023-11-06 22:47:49,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:49,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:47:49,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:49,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:47:49,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:47:49,312 INFO L87 Difference]: Start difference. First operand 8381 states and 10434 transitions. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 8 states have internal predecessors, (128), 3 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2023-11-06 22:47:53,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:47:53,976 INFO L93 Difference]: Finished difference Result 17234 states and 21806 transitions. [2023-11-06 22:47:53,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-06 22:47:53,976 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 8 states have internal predecessors, (128), 3 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) Word has length 375 [2023-11-06 22:47:53,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:47:53,994 INFO L225 Difference]: With dead ends: 17234 [2023-11-06 22:47:53,994 INFO L226 Difference]: Without dead ends: 10559 [2023-11-06 22:47:54,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2023-11-06 22:47:54,002 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 368 mSDsluCounter, 1925 mSDsCounter, 0 mSdLazyCounter, 1976 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 2048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:47:54,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 2288 Invalid, 2048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1976 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-06 22:47:54,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10559 states. [2023-11-06 22:47:56,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10559 to 7111. [2023-11-06 22:47:56,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7111 states, 5826 states have (on average 1.2070030895983521) internal successors, (7032), 5883 states have internal predecessors, (7032), 866 states have call successors, (866), 418 states have call predecessors, (866), 418 states have return successors, (866), 809 states have call predecessors, (866), 866 states have call successors, (866) [2023-11-06 22:47:56,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7111 states to 7111 states and 8764 transitions. [2023-11-06 22:47:56,100 INFO L78 Accepts]: Start accepts. Automaton has 7111 states and 8764 transitions. Word has length 375 [2023-11-06 22:47:56,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:47:56,101 INFO L495 AbstractCegarLoop]: Abstraction has 7111 states and 8764 transitions. [2023-11-06 22:47:56,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 8 states have internal predecessors, (128), 3 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2023-11-06 22:47:56,101 INFO L276 IsEmpty]: Start isEmpty. Operand 7111 states and 8764 transitions. [2023-11-06 22:47:56,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2023-11-06 22:47:56,110 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:47:56,111 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 9, 9, 7, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:56,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-11-06 22:47:56,111 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:47:56,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:56,111 INFO L85 PathProgramCache]: Analyzing trace with hash 806054065, now seen corresponding path program 1 times [2023-11-06 22:47:56,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:56,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855347446] [2023-11-06 22:47:56,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:56,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:56,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:56,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:47:56,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:56,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:47:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:56,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:47:56,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:56,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:47:56,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:56,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:47:56,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:56,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:47:56,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:56,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:47:56,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:56,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:47:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:56,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:47:56,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:56,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:47:56,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:56,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:47:56,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:56,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:47:56,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:56,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-06 22:47:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:56,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:47:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:56,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:47:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:56,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:47:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:56,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-11-06 22:47:56,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:56,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2023-11-06 22:47:56,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:56,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-11-06 22:47:56,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:56,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2023-11-06 22:47:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:56,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2023-11-06 22:47:56,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:56,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2023-11-06 22:47:56,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:56,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2023-11-06 22:47:56,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:56,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2023-11-06 22:47:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:56,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2023-11-06 22:47:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:56,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2023-11-06 22:47:56,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:56,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2023-11-06 22:47:56,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:56,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2023-11-06 22:47:56,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:56,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2023-11-06 22:47:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:56,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2023-11-06 22:47:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:56,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2023-11-06 22:47:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:56,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2023-11-06 22:47:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:56,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2023-11-06 22:47:56,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:56,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1070 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1063 trivial. 0 not checked. [2023-11-06 22:47:56,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:56,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855347446] [2023-11-06 22:47:56,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855347446] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:56,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:56,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:47:56,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756782610] [2023-11-06 22:47:56,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:56,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:47:56,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:56,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:47:56,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:47:56,429 INFO L87 Difference]: Start difference. First operand 7111 states and 8764 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-06 22:47:57,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:47:57,735 INFO L93 Difference]: Finished difference Result 10161 states and 12548 transitions. [2023-11-06 22:47:57,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:47:57,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 375 [2023-11-06 22:47:57,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:47:57,742 INFO L225 Difference]: With dead ends: 10161 [2023-11-06 22:47:57,742 INFO L226 Difference]: Without dead ends: 3816 [2023-11-06 22:47:57,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:47:57,750 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 55 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:47:57,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 462 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:47:57,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3816 states. [2023-11-06 22:47:58,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3816 to 3816. [2023-11-06 22:47:58,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3816 states, 3141 states have (on average 1.1932505571474052) internal successors, (3748), 3172 states have internal predecessors, (3748), 454 states have call successors, (454), 220 states have call predecessors, (454), 220 states have return successors, (454), 423 states have call predecessors, (454), 454 states have call successors, (454) [2023-11-06 22:47:58,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3816 states to 3816 states and 4656 transitions. [2023-11-06 22:47:58,741 INFO L78 Accepts]: Start accepts. Automaton has 3816 states and 4656 transitions. Word has length 375 [2023-11-06 22:47:58,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:47:58,742 INFO L495 AbstractCegarLoop]: Abstraction has 3816 states and 4656 transitions. [2023-11-06 22:47:58,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-06 22:47:58,743 INFO L276 IsEmpty]: Start isEmpty. Operand 3816 states and 4656 transitions. [2023-11-06 22:47:58,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2023-11-06 22:47:58,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:47:58,749 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 9, 9, 7, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:58,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-11-06 22:47:58,750 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:47:58,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:58,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1563740638, now seen corresponding path program 1 times [2023-11-06 22:47:58,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:58,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400424514] [2023-11-06 22:47:58,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:58,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:59,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:47:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:59,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:47:59,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:59,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:47:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:59,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 22:47:59,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:59,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:47:59,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:59,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:47:59,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:59,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:47:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:59,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-06 22:47:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:59,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:47:59,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:59,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:47:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:59,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:47:59,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:59,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:47:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:59,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-06 22:47:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:59,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:47:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:59,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:47:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:59,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:47:59,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:59,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-11-06 22:47:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:59,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-11-06 22:47:59,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:59,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2023-11-06 22:47:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:59,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-11-06 22:47:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:59,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2023-11-06 22:47:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:59,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2023-11-06 22:47:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:59,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-11-06 22:47:59,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:59,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2023-11-06 22:47:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:59,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2023-11-06 22:47:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:59,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-11-06 22:47:59,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:59,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2023-11-06 22:47:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:59,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2023-11-06 22:47:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:59,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-06 22:47:59,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:59,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2023-11-06 22:47:59,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:59,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2023-11-06 22:47:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:59,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2023-11-06 22:47:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:59,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2023-11-06 22:47:59,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:59,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 22 proven. 26 refuted. 0 times theorem prover too weak. 1016 trivial. 0 not checked. [2023-11-06 22:47:59,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:59,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400424514] [2023-11-06 22:47:59,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400424514] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:47:59,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497436589] [2023-11-06 22:47:59,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:59,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:47:59,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:47:59,797 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:47:59,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_797b84d8-a082-4276-9c25-bed0d37f4928/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-06 22:48:00,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:00,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 1335 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-06 22:48:00,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:48:01,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1064 backedges. 526 proven. 236 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2023-11-06 22:48:01,569 INFO L327 TraceCheckSpWp]: Computing backward predicates...