./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label38.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aea1faf-ae19-4d38-96af-cdfcd3f51619/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aea1faf-ae19-4d38-96af-cdfcd3f51619/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aea1faf-ae19-4d38-96af-cdfcd3f51619/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aea1faf-ae19-4d38-96af-cdfcd3f51619/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label38.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aea1faf-ae19-4d38-96af-cdfcd3f51619/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aea1faf-ae19-4d38-96af-cdfcd3f51619/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --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 d34933a1b994b8e38d771072f952fdcb97af91d6a5c53e5f6f0249e635acf216 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 02:05:42,224 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 02:05:42,332 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aea1faf-ae19-4d38-96af-cdfcd3f51619/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 02:05:42,343 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 02:05:42,343 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 02:05:42,371 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 02:05:42,371 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 02:05:42,372 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 02:05:42,372 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 02:05:42,372 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 02:05:42,372 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 02:05:42,372 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 02:05:42,373 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 02:05:42,373 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 02:05:42,373 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 02:05:42,373 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 02:05:42,373 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 02:05:42,373 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 02:05:42,374 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 02:05:42,374 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 02:05:42,374 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 02:05:42,374 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 02:05:42,374 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 02:05:42,374 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 02:05:42,374 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 02:05:42,374 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 02:05:42,374 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 02:05:42,374 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 02:05:42,375 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 02:05:42,375 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 02:05:42,375 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 02:05:42,375 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 02:05:42,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 02:05:42,375 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 02:05:42,375 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 02:05:42,375 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 02:05:42,375 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 02:05:42,376 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 02:05:42,376 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 02:05:42,376 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 02:05:42,376 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 02:05:42,376 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 02:05:42,376 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 02:05:42,376 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 02:05:42,376 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 02:05:42,376 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 02:05:42,377 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 02:05:42,377 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 02:05:42,377 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_9aea1faf-ae19-4d38-96af-cdfcd3f51619/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness 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 -> d34933a1b994b8e38d771072f952fdcb97af91d6a5c53e5f6f0249e635acf216 [2024-11-24 02:05:42,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 02:05:42,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 02:05:42,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 02:05:42,802 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 02:05:42,803 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 02:05:42,804 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aea1faf-ae19-4d38-96af-cdfcd3f51619/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/eca-rers2012/Problem13_label38.c [2024-11-24 02:05:45,907 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aea1faf-ae19-4d38-96af-cdfcd3f51619/bin/uautomizer-verify-LYvppIcaGC/data/069204ecb/fe95585331f74d5cbe961a51027f513a/FLAGc42702f57 [2024-11-24 02:05:46,659 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 02:05:46,659 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aea1faf-ae19-4d38-96af-cdfcd3f51619/sv-benchmarks/c/eca-rers2012/Problem13_label38.c [2024-11-24 02:05:46,703 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aea1faf-ae19-4d38-96af-cdfcd3f51619/bin/uautomizer-verify-LYvppIcaGC/data/069204ecb/fe95585331f74d5cbe961a51027f513a/FLAGc42702f57 [2024-11-24 02:05:46,989 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aea1faf-ae19-4d38-96af-cdfcd3f51619/bin/uautomizer-verify-LYvppIcaGC/data/069204ecb/fe95585331f74d5cbe961a51027f513a [2024-11-24 02:05:46,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 02:05:46,994 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 02:05:46,996 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 02:05:46,996 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 02:05:47,002 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 02:05:47,003 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 02:05:46" (1/1) ... [2024-11-24 02:05:47,004 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@290b3e75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:47, skipping insertion in model container [2024-11-24 02:05:47,004 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 02:05:46" (1/1) ... [2024-11-24 02:05:47,169 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 02:05:47,495 WARN L250 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_9aea1faf-ae19-4d38-96af-cdfcd3f51619/sv-benchmarks/c/eca-rers2012/Problem13_label38.c[8378,8391] [2024-11-24 02:05:48,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 02:05:48,758 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 02:05:48,809 WARN L250 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_9aea1faf-ae19-4d38-96af-cdfcd3f51619/sv-benchmarks/c/eca-rers2012/Problem13_label38.c[8378,8391] [2024-11-24 02:05:49,502 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 02:05:49,543 INFO L204 MainTranslator]: Completed translation [2024-11-24 02:05:49,544 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:49 WrapperNode [2024-11-24 02:05:49,544 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 02:05:49,547 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 02:05:49,547 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 02:05:49,547 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 02:05:49,558 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:49" (1/1) ... [2024-11-24 02:05:49,641 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:49" (1/1) ... [2024-11-24 02:05:50,401 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5586 [2024-11-24 02:05:50,402 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 02:05:50,403 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 02:05:50,403 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 02:05:50,403 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 02:05:50,415 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:49" (1/1) ... [2024-11-24 02:05:50,415 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:49" (1/1) ... [2024-11-24 02:05:50,561 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:49" (1/1) ... [2024-11-24 02:05:51,030 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-24 02:05:51,031 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:49" (1/1) ... [2024-11-24 02:05:51,031 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:49" (1/1) ... [2024-11-24 02:05:51,330 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:49" (1/1) ... [2024-11-24 02:05:51,375 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:49" (1/1) ... [2024-11-24 02:05:51,450 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:49" (1/1) ... [2024-11-24 02:05:51,515 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:49" (1/1) ... [2024-11-24 02:05:51,542 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:49" (1/1) ... [2024-11-24 02:05:51,637 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 02:05:51,639 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 02:05:51,639 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 02:05:51,639 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 02:05:51,641 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:49" (1/1) ... [2024-11-24 02:05:51,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 02:05:51,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aea1faf-ae19-4d38-96af-cdfcd3f51619/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:05:51,690 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aea1faf-ae19-4d38-96af-cdfcd3f51619/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 02:05:51,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aea1faf-ae19-4d38-96af-cdfcd3f51619/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 02:05:51,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 02:05:51,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 02:05:51,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 02:05:51,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 02:05:51,830 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 02:05:51,833 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 02:06:01,529 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-11-24 02:06:01,530 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 02:06:01,592 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 02:06:01,593 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 02:06:01,593 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 02:06:01 BoogieIcfgContainer [2024-11-24 02:06:01,594 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 02:06:01,600 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 02:06:01,601 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 02:06:01,609 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 02:06:01,609 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 02:05:46" (1/3) ... [2024-11-24 02:06:01,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65bc30d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 02:06:01, skipping insertion in model container [2024-11-24 02:06:01,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 02:05:49" (2/3) ... [2024-11-24 02:06:01,612 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65bc30d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 02:06:01, skipping insertion in model container [2024-11-24 02:06:01,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 02:06:01" (3/3) ... [2024-11-24 02:06:01,614 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem13_label38.c [2024-11-24 02:06:01,636 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 02:06:01,641 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem13_label38.c that has 1 procedures, 1098 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 02:06:01,780 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 02:06:01,797 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@514df6cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 02:06:01,797 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 02:06:01,806 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:01,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-24 02:06:01,816 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:06:01,817 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:01,818 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:06:01,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:01,823 INFO L85 PathProgramCache]: Analyzing trace with hash 118092897, now seen corresponding path program 1 times [2024-11-24 02:06:01,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:01,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585682270] [2024-11-24 02:06:01,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:06:01,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:02,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:02,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:02,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:02,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585682270] [2024-11-24 02:06:02,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585682270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:06:02,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:06:02,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 02:06:02,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296344842] [2024-11-24 02:06:02,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:06:02,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:06:02,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:02,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:06:02,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:06:02,526 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:09,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:06:09,883 INFO L93 Difference]: Finished difference Result 3121 states and 5804 transitions. [2024-11-24 02:06:09,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:06:09,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-24 02:06:09,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:06:09,924 INFO L225 Difference]: With dead ends: 3121 [2024-11-24 02:06:09,924 INFO L226 Difference]: Without dead ends: 1944 [2024-11-24 02:06:09,935 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:06:09,938 INFO L435 NwaCegarLoop]: 438 mSDtfsCounter, 930 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 3124 mSolverCounterSat, 577 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 3701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 577 IncrementalHoareTripleChecker+Valid, 3124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-11-24 02:06:09,939 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [930 Valid, 575 Invalid, 3701 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [577 Valid, 3124 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-11-24 02:06:09,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2024-11-24 02:06:10,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1873. [2024-11-24 02:06:10,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1872 states have (on average 1.7393162393162394) internal successors, (3256), 1872 states have internal predecessors, (3256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:10,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 3256 transitions. [2024-11-24 02:06:10,130 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 3256 transitions. Word has length 59 [2024-11-24 02:06:10,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:06:10,132 INFO L471 AbstractCegarLoop]: Abstraction has 1873 states and 3256 transitions. [2024-11-24 02:06:10,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:10,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 3256 transitions. [2024-11-24 02:06:10,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-24 02:06:10,137 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:06:10,137 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:10,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 02:06:10,138 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:06:10,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:10,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1340601606, now seen corresponding path program 1 times [2024-11-24 02:06:10,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:10,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100873835] [2024-11-24 02:06:10,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:06:10,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:10,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:10,623 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:10,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:10,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100873835] [2024-11-24 02:06:10,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100873835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:06:10,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:06:10,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 02:06:10,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382851152] [2024-11-24 02:06:10,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:06:10,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:06:10,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:10,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:06:10,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:06:10,628 INFO L87 Difference]: Start difference. First operand 1873 states and 3256 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:16,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:06:16,542 INFO L93 Difference]: Finished difference Result 5351 states and 9369 transitions. [2024-11-24 02:06:16,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:06:16,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2024-11-24 02:06:16,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:06:16,557 INFO L225 Difference]: With dead ends: 5351 [2024-11-24 02:06:16,557 INFO L226 Difference]: Without dead ends: 3480 [2024-11-24 02:06:16,560 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:06:16,563 INFO L435 NwaCegarLoop]: 926 mSDtfsCounter, 884 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2338 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 3216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-11-24 02:06:16,563 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 1079 Invalid, 3216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2338 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-11-24 02:06:16,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3480 states. [2024-11-24 02:06:16,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3480 to 3479. [2024-11-24 02:06:16,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3479 states, 3478 states have (on average 1.518688901667625) internal successors, (5282), 3478 states have internal predecessors, (5282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:16,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3479 states to 3479 states and 5282 transitions. [2024-11-24 02:06:16,672 INFO L78 Accepts]: Start accepts. Automaton has 3479 states and 5282 transitions. Word has length 124 [2024-11-24 02:06:16,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:06:16,674 INFO L471 AbstractCegarLoop]: Abstraction has 3479 states and 5282 transitions. [2024-11-24 02:06:16,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:16,675 INFO L276 IsEmpty]: Start isEmpty. Operand 3479 states and 5282 transitions. [2024-11-24 02:06:16,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-24 02:06:16,682 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:06:16,682 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:16,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 02:06:16,683 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:06:16,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:16,683 INFO L85 PathProgramCache]: Analyzing trace with hash 473644895, now seen corresponding path program 1 times [2024-11-24 02:06:16,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:16,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054957774] [2024-11-24 02:06:16,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:06:16,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:16,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:16,952 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:16,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:16,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054957774] [2024-11-24 02:06:16,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054957774] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:06:16,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:06:16,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 02:06:16,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631109874] [2024-11-24 02:06:16,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:06:16,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:06:16,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:16,956 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:06:16,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:06:16,957 INFO L87 Difference]: Start difference. First operand 3479 states and 5282 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:22,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:06:22,103 INFO L93 Difference]: Finished difference Result 10142 states and 15438 transitions. [2024-11-24 02:06:22,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:06:22,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2024-11-24 02:06:22,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:06:22,134 INFO L225 Difference]: With dead ends: 10142 [2024-11-24 02:06:22,134 INFO L226 Difference]: Without dead ends: 6665 [2024-11-24 02:06:22,140 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:06:22,142 INFO L435 NwaCegarLoop]: 744 mSDtfsCounter, 976 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2553 mSolverCounterSat, 772 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 3325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 772 IncrementalHoareTripleChecker+Valid, 2553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-24 02:06:22,142 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 877 Invalid, 3325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [772 Valid, 2553 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-11-24 02:06:22,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6665 states. [2024-11-24 02:06:22,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6665 to 6657. [2024-11-24 02:06:22,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6657 states, 6656 states have (on average 1.3728966346153846) internal successors, (9138), 6656 states have internal predecessors, (9138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:22,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6657 states to 6657 states and 9138 transitions. [2024-11-24 02:06:22,298 INFO L78 Accepts]: Start accepts. Automaton has 6657 states and 9138 transitions. Word has length 126 [2024-11-24 02:06:22,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:06:22,298 INFO L471 AbstractCegarLoop]: Abstraction has 6657 states and 9138 transitions. [2024-11-24 02:06:22,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:22,299 INFO L276 IsEmpty]: Start isEmpty. Operand 6657 states and 9138 transitions. [2024-11-24 02:06:22,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-24 02:06:22,301 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:06:22,301 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-24 02:06:22,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 02:06:22,301 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:06:22,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:22,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1017971122, now seen corresponding path program 1 times [2024-11-24 02:06:22,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:22,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175987633] [2024-11-24 02:06:22,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:06:22,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:22,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:22,553 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:22,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:22,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175987633] [2024-11-24 02:06:22,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175987633] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:06:22,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:06:22,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 02:06:22,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226022958] [2024-11-24 02:06:22,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:06:22,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:06:22,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:22,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:06:22,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:06:22,557 INFO L87 Difference]: Start difference. First operand 6657 states and 9138 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:27,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:06:27,664 INFO L93 Difference]: Finished difference Result 19637 states and 26969 transitions. [2024-11-24 02:06:27,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:06:27,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2024-11-24 02:06:27,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:06:27,704 INFO L225 Difference]: With dead ends: 19637 [2024-11-24 02:06:27,704 INFO L226 Difference]: Without dead ends: 12982 [2024-11-24 02:06:27,714 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:06:27,715 INFO L435 NwaCegarLoop]: 1012 mSDtfsCounter, 791 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2485 mSolverCounterSat, 792 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 3277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 792 IncrementalHoareTripleChecker+Valid, 2485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-24 02:06:27,715 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 1163 Invalid, 3277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [792 Valid, 2485 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-24 02:06:27,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12982 states. [2024-11-24 02:06:28,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12982 to 12175. [2024-11-24 02:06:28,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12175 states, 12174 states have (on average 1.2529160505996386) internal successors, (15253), 12174 states have internal predecessors, (15253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:28,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12175 states to 12175 states and 15253 transitions. [2024-11-24 02:06:28,149 INFO L78 Accepts]: Start accepts. Automaton has 12175 states and 15253 transitions. Word has length 132 [2024-11-24 02:06:28,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:06:28,150 INFO L471 AbstractCegarLoop]: Abstraction has 12175 states and 15253 transitions. [2024-11-24 02:06:28,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:28,151 INFO L276 IsEmpty]: Start isEmpty. Operand 12175 states and 15253 transitions. [2024-11-24 02:06:28,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-24 02:06:28,154 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:06:28,154 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-24 02:06:28,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 02:06:28,155 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:06:28,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:28,156 INFO L85 PathProgramCache]: Analyzing trace with hash 96858422, now seen corresponding path program 1 times [2024-11-24 02:06:28,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:28,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737277651] [2024-11-24 02:06:28,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:06:28,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:28,975 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:28,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:28,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737277651] [2024-11-24 02:06:28,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737277651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:06:28,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:06:28,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 02:06:28,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362052721] [2024-11-24 02:06:28,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:06:28,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:06:28,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:28,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:06:28,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:06:28,981 INFO L87 Difference]: Start difference. First operand 12175 states and 15253 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:33,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:06:33,762 INFO L93 Difference]: Finished difference Result 25135 states and 31306 transitions. [2024-11-24 02:06:33,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:06:33,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2024-11-24 02:06:33,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:06:33,801 INFO L225 Difference]: With dead ends: 25135 [2024-11-24 02:06:33,801 INFO L226 Difference]: Without dead ends: 12962 [2024-11-24 02:06:33,808 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:06:33,809 INFO L435 NwaCegarLoop]: 1083 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2520 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 2529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-24 02:06:33,809 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1212 Invalid, 2529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2520 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-24 02:06:33,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12962 states. [2024-11-24 02:06:34,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12962 to 12962. [2024-11-24 02:06:34,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12962 states, 12961 states have (on average 1.2379446030398888) internal successors, (16045), 12961 states have internal predecessors, (16045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:34,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12962 states to 12962 states and 16045 transitions. [2024-11-24 02:06:34,059 INFO L78 Accepts]: Start accepts. Automaton has 12962 states and 16045 transitions. Word has length 148 [2024-11-24 02:06:34,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:06:34,060 INFO L471 AbstractCegarLoop]: Abstraction has 12962 states and 16045 transitions. [2024-11-24 02:06:34,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:34,060 INFO L276 IsEmpty]: Start isEmpty. Operand 12962 states and 16045 transitions. [2024-11-24 02:06:34,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-24 02:06:34,062 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:06:34,062 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-24 02:06:34,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 02:06:34,063 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:06:34,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:34,064 INFO L85 PathProgramCache]: Analyzing trace with hash -486892641, now seen corresponding path program 1 times [2024-11-24 02:06:34,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:34,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034941295] [2024-11-24 02:06:34,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:06:34,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:34,283 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:34,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:34,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034941295] [2024-11-24 02:06:34,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034941295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:06:34,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:06:34,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 02:06:34,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484816321] [2024-11-24 02:06:34,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:06:34,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:06:34,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:34,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:06:34,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:06:34,288 INFO L87 Difference]: Start difference. First operand 12962 states and 16045 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:39,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:06:39,648 INFO L93 Difference]: Finished difference Result 31448 states and 39970 transitions. [2024-11-24 02:06:39,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:06:39,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2024-11-24 02:06:39,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:06:39,694 INFO L225 Difference]: With dead ends: 31448 [2024-11-24 02:06:39,694 INFO L226 Difference]: Without dead ends: 19275 [2024-11-24 02:06:39,710 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:06:39,712 INFO L435 NwaCegarLoop]: 837 mSDtfsCounter, 904 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2391 mSolverCounterSat, 908 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 3299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 908 IncrementalHoareTripleChecker+Valid, 2391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-24 02:06:39,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 957 Invalid, 3299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [908 Valid, 2391 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-24 02:06:39,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19275 states. [2024-11-24 02:06:40,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19275 to 18478. [2024-11-24 02:06:40,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18478 states, 18477 states have (on average 1.2248200465443524) internal successors, (22631), 18477 states have internal predecessors, (22631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:40,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18478 states to 18478 states and 22631 transitions. [2024-11-24 02:06:40,120 INFO L78 Accepts]: Start accepts. Automaton has 18478 states and 22631 transitions. Word has length 155 [2024-11-24 02:06:40,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:06:40,120 INFO L471 AbstractCegarLoop]: Abstraction has 18478 states and 22631 transitions. [2024-11-24 02:06:40,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:40,121 INFO L276 IsEmpty]: Start isEmpty. Operand 18478 states and 22631 transitions. [2024-11-24 02:06:40,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-11-24 02:06:40,131 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:06:40,131 INFO L218 NwaCegarLoop]: trace histogram [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, 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] [2024-11-24 02:06:40,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 02:06:40,131 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:06:40,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:40,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1558430792, now seen corresponding path program 1 times [2024-11-24 02:06:40,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:40,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271757184] [2024-11-24 02:06:40,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:06:40,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:40,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:40,650 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-24 02:06:40,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:40,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271757184] [2024-11-24 02:06:40,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271757184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:06:40,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:06:40,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 02:06:40,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060892410] [2024-11-24 02:06:40,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:06:40,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:06:40,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:40,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:06:40,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:06:40,658 INFO L87 Difference]: Start difference. First operand 18478 states and 22631 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:45,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:06:45,815 INFO L93 Difference]: Finished difference Result 42487 states and 53153 transitions. [2024-11-24 02:06:45,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:06:45,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 244 [2024-11-24 02:06:45,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:06:45,878 INFO L225 Difference]: With dead ends: 42487 [2024-11-24 02:06:45,879 INFO L226 Difference]: Without dead ends: 24798 [2024-11-24 02:06:45,894 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:06:45,895 INFO L435 NwaCegarLoop]: 704 mSDtfsCounter, 991 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 2389 mSolverCounterSat, 1023 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 3412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1023 IncrementalHoareTripleChecker+Valid, 2389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-24 02:06:45,896 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [991 Valid, 795 Invalid, 3412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1023 Valid, 2389 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-24 02:06:45,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24798 states. [2024-11-24 02:06:46,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24798 to 24786. [2024-11-24 02:06:46,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24786 states, 24785 states have (on average 1.230260238047206) internal successors, (30492), 24785 states have internal predecessors, (30492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:46,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24786 states to 24786 states and 30492 transitions. [2024-11-24 02:06:46,281 INFO L78 Accepts]: Start accepts. Automaton has 24786 states and 30492 transitions. Word has length 244 [2024-11-24 02:06:46,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:06:46,282 INFO L471 AbstractCegarLoop]: Abstraction has 24786 states and 30492 transitions. [2024-11-24 02:06:46,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:46,283 INFO L276 IsEmpty]: Start isEmpty. Operand 24786 states and 30492 transitions. [2024-11-24 02:06:46,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2024-11-24 02:06:46,295 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:06:46,295 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:46,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 02:06:46,296 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:06:46,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:46,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1718315709, now seen corresponding path program 1 times [2024-11-24 02:06:46,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:46,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076934649] [2024-11-24 02:06:46,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:06:46,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:46,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:47,103 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:06:47,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:47,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076934649] [2024-11-24 02:06:47,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076934649] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:06:47,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:06:47,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 02:06:47,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978945548] [2024-11-24 02:06:47,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:06:47,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 02:06:47,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:47,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 02:06:47,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:06:47,107 INFO L87 Difference]: Start difference. First operand 24786 states and 30492 transitions. Second operand has 4 states, 4 states have (on average 80.25) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:55,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:06:55,058 INFO L93 Difference]: Finished difference Result 73224 states and 90680 transitions. [2024-11-24 02:06:55,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 02:06:55,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.25) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 321 [2024-11-24 02:06:55,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:06:55,128 INFO L225 Difference]: With dead ends: 73224 [2024-11-24 02:06:55,128 INFO L226 Difference]: Without dead ends: 49227 [2024-11-24 02:06:55,152 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:06:55,153 INFO L435 NwaCegarLoop]: 545 mSDtfsCounter, 2244 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 3987 mSolverCounterSat, 826 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2244 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 4813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 826 IncrementalHoareTripleChecker+Valid, 3987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2024-11-24 02:06:55,154 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2244 Valid, 757 Invalid, 4813 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [826 Valid, 3987 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2024-11-24 02:06:55,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49227 states. [2024-11-24 02:06:55,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49227 to 49213. [2024-11-24 02:06:55,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49213 states, 49212 states have (on average 1.2029992684711046) internal successors, (59202), 49212 states have internal predecessors, (59202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:56,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49213 states to 49213 states and 59202 transitions. [2024-11-24 02:06:56,023 INFO L78 Accepts]: Start accepts. Automaton has 49213 states and 59202 transitions. Word has length 321 [2024-11-24 02:06:56,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:06:56,027 INFO L471 AbstractCegarLoop]: Abstraction has 49213 states and 59202 transitions. [2024-11-24 02:06:56,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.25) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:06:56,027 INFO L276 IsEmpty]: Start isEmpty. Operand 49213 states and 59202 transitions. [2024-11-24 02:06:56,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2024-11-24 02:06:56,038 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:06:56,039 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:06:56,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 02:06:56,040 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:06:56,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:06:56,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1612041382, now seen corresponding path program 1 times [2024-11-24 02:06:56,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:06:56,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912483847] [2024-11-24 02:06:56,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:06:56,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:06:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:06:56,668 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 389 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-24 02:06:56,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:06:56,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912483847] [2024-11-24 02:06:56,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912483847] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:06:56,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:06:56,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 02:06:56,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610829422] [2024-11-24 02:06:56,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:06:56,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 02:06:56,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:06:56,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 02:06:56,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:06:56,675 INFO L87 Difference]: Start difference. First operand 49213 states and 59202 transitions. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:08,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:07:08,669 INFO L93 Difference]: Finished difference Result 138783 states and 168389 transitions. [2024-11-24 02:07:08,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 02:07:08,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 347 [2024-11-24 02:07:08,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:07:08,765 INFO L225 Difference]: With dead ends: 138783 [2024-11-24 02:07:08,765 INFO L226 Difference]: Without dead ends: 90359 [2024-11-24 02:07:08,791 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 02:07:08,792 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 1710 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 7205 mSolverCounterSat, 979 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1710 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 8184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 979 IncrementalHoareTripleChecker+Valid, 7205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2024-11-24 02:07:08,792 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1710 Valid, 1141 Invalid, 8184 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [979 Valid, 7205 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2024-11-24 02:07:08,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90359 states. [2024-11-24 02:07:09,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90359 to 90227. [2024-11-24 02:07:09,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90227 states, 90226 states have (on average 1.1907099949016913) internal successors, (107433), 90226 states have internal predecessors, (107433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:10,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90227 states to 90227 states and 107433 transitions. [2024-11-24 02:07:10,003 INFO L78 Accepts]: Start accepts. Automaton has 90227 states and 107433 transitions. Word has length 347 [2024-11-24 02:07:10,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:07:10,003 INFO L471 AbstractCegarLoop]: Abstraction has 90227 states and 107433 transitions. [2024-11-24 02:07:10,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:10,004 INFO L276 IsEmpty]: Start isEmpty. Operand 90227 states and 107433 transitions. [2024-11-24 02:07:10,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2024-11-24 02:07:10,009 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:07:10,010 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 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] [2024-11-24 02:07:10,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 02:07:10,010 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:07:10,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:07:10,016 INFO L85 PathProgramCache]: Analyzing trace with hash -2079155787, now seen corresponding path program 1 times [2024-11-24 02:07:10,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:07:10,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652865695] [2024-11-24 02:07:10,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:07:10,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:07:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:07:13,057 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 127 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:07:13,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:07:13,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652865695] [2024-11-24 02:07:13,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652865695] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:07:13,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454177511] [2024-11-24 02:07:13,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:07:13,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:07:13,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aea1faf-ae19-4d38-96af-cdfcd3f51619/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:07:13,063 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aea1faf-ae19-4d38-96af-cdfcd3f51619/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:07:13,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aea1faf-ae19-4d38-96af-cdfcd3f51619/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 02:07:13,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:07:13,333 INFO L256 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 02:07:13,348 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:07:14,933 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-24 02:07:14,933 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 02:07:14,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454177511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:07:14,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 02:07:14,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-24 02:07:14,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137570557] [2024-11-24 02:07:14,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:07:14,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:07:14,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:07:14,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:07:14,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-24 02:07:14,936 INFO L87 Difference]: Start difference. First operand 90227 states and 107433 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 2 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:19,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:07:19,726 INFO L93 Difference]: Finished difference Result 167867 states and 201412 transitions. [2024-11-24 02:07:19,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:07:19,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 2 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 350 [2024-11-24 02:07:19,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:07:19,826 INFO L225 Difference]: With dead ends: 167867 [2024-11-24 02:07:19,826 INFO L226 Difference]: Without dead ends: 93390 [2024-11-24 02:07:19,864 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-24 02:07:19,865 INFO L435 NwaCegarLoop]: 1088 mSDtfsCounter, 643 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2505 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 2616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-24 02:07:19,865 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 1225 Invalid, 2616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2505 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-24 02:07:19,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93390 states. [2024-11-24 02:07:20,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93390 to 91801. [2024-11-24 02:07:20,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91801 states, 91800 states have (on average 1.187875816993464) internal successors, (109047), 91800 states have internal predecessors, (109047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:21,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91801 states to 91801 states and 109047 transitions. [2024-11-24 02:07:21,719 INFO L78 Accepts]: Start accepts. Automaton has 91801 states and 109047 transitions. Word has length 350 [2024-11-24 02:07:21,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:07:21,720 INFO L471 AbstractCegarLoop]: Abstraction has 91801 states and 109047 transitions. [2024-11-24 02:07:21,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 2 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:21,720 INFO L276 IsEmpty]: Start isEmpty. Operand 91801 states and 109047 transitions. [2024-11-24 02:07:21,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2024-11-24 02:07:21,744 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:07:21,744 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-24 02:07:21,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aea1faf-ae19-4d38-96af-cdfcd3f51619/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 02:07:21,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aea1faf-ae19-4d38-96af-cdfcd3f51619/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-24 02:07:21,949 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:07:21,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:07:21,950 INFO L85 PathProgramCache]: Analyzing trace with hash -758867451, now seen corresponding path program 1 times [2024-11-24 02:07:21,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:07:21,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448884596] [2024-11-24 02:07:21,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:07:21,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:07:22,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:07:23,611 INFO L134 CoverageAnalysis]: Checked inductivity of 712 backedges. 551 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-11-24 02:07:23,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:07:23,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448884596] [2024-11-24 02:07:23,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448884596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:07:23,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:07:23,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 02:07:23,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327253428] [2024-11-24 02:07:23,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:07:23,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:07:23,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:07:23,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:07:23,622 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:07:23,623 INFO L87 Difference]: Start difference. First operand 91801 states and 109047 transitions. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:28,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:07:28,741 INFO L93 Difference]: Finished difference Result 182817 states and 217312 transitions. [2024-11-24 02:07:28,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:07:28,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 408 [2024-11-24 02:07:28,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:07:28,840 INFO L225 Difference]: With dead ends: 182817 [2024-11-24 02:07:28,841 INFO L226 Difference]: Without dead ends: 91805 [2024-11-24 02:07:28,874 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:07:28,874 INFO L435 NwaCegarLoop]: 1425 mSDtfsCounter, 954 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 2495 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 954 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 3109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 2495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-24 02:07:28,874 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [954 Valid, 1520 Invalid, 3109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [614 Valid, 2495 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-24 02:07:28,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91805 states. [2024-11-24 02:07:30,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91805 to 91793. [2024-11-24 02:07:30,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91793 states, 91792 states have (on average 1.1373431235837546) internal successors, (104399), 91792 states have internal predecessors, (104399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:30,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91793 states to 91793 states and 104399 transitions. [2024-11-24 02:07:30,566 INFO L78 Accepts]: Start accepts. Automaton has 91793 states and 104399 transitions. Word has length 408 [2024-11-24 02:07:30,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:07:30,566 INFO L471 AbstractCegarLoop]: Abstraction has 91793 states and 104399 transitions. [2024-11-24 02:07:30,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:30,567 INFO L276 IsEmpty]: Start isEmpty. Operand 91793 states and 104399 transitions. [2024-11-24 02:07:30,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2024-11-24 02:07:30,580 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:07:30,580 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-24 02:07:30,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 02:07:30,581 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:07:30,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:07:30,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1585784281, now seen corresponding path program 1 times [2024-11-24 02:07:30,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:07:30,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006191540] [2024-11-24 02:07:30,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:07:30,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:07:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:07:31,619 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 385 proven. 0 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2024-11-24 02:07:31,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:07:31,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006191540] [2024-11-24 02:07:31,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006191540] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:07:31,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:07:31,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 02:07:31,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802915179] [2024-11-24 02:07:31,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:07:31,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:07:31,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:07:31,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:07:31,622 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:07:31,622 INFO L87 Difference]: Start difference. First operand 91793 states and 104399 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:36,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:07:36,677 INFO L93 Difference]: Finished difference Result 167847 states and 192292 transitions. [2024-11-24 02:07:36,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:07:36,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 432 [2024-11-24 02:07:36,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:07:36,798 INFO L225 Difference]: With dead ends: 167847 [2024-11-24 02:07:36,798 INFO L226 Difference]: Without dead ends: 91804 [2024-11-24 02:07:36,836 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:07:36,837 INFO L435 NwaCegarLoop]: 1052 mSDtfsCounter, 725 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 2729 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 2733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-24 02:07:36,837 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 1234 Invalid, 2733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2729 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-24 02:07:36,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91804 states. [2024-11-24 02:07:37,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91804 to 91793. [2024-11-24 02:07:37,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91793 states, 91792 states have (on average 1.1367984138051246) internal successors, (104349), 91792 states have internal predecessors, (104349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:38,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91793 states to 91793 states and 104349 transitions. [2024-11-24 02:07:38,303 INFO L78 Accepts]: Start accepts. Automaton has 91793 states and 104349 transitions. Word has length 432 [2024-11-24 02:07:38,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:07:38,303 INFO L471 AbstractCegarLoop]: Abstraction has 91793 states and 104349 transitions. [2024-11-24 02:07:38,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:38,304 INFO L276 IsEmpty]: Start isEmpty. Operand 91793 states and 104349 transitions. [2024-11-24 02:07:38,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2024-11-24 02:07:38,308 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:07:38,308 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:07:38,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 02:07:38,309 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:07:38,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:07:38,309 INFO L85 PathProgramCache]: Analyzing trace with hash 980121630, now seen corresponding path program 1 times [2024-11-24 02:07:38,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:07:38,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730752691] [2024-11-24 02:07:38,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:07:38,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:07:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:07:38,559 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-24 02:07:38,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:07:38,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730752691] [2024-11-24 02:07:38,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730752691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:07:38,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:07:38,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 02:07:38,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107557511] [2024-11-24 02:07:38,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:07:38,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:07:38,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:07:38,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:07:38,562 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:07:38,562 INFO L87 Difference]: Start difference. First operand 91793 states and 104349 transitions. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:44,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:07:44,309 INFO L93 Difference]: Finished difference Result 246518 states and 281721 transitions. [2024-11-24 02:07:44,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:07:44,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 439 [2024-11-24 02:07:44,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:07:44,477 INFO L225 Difference]: With dead ends: 246518 [2024-11-24 02:07:44,477 INFO L226 Difference]: Without dead ends: 152363 [2024-11-24 02:07:44,510 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:07:44,511 INFO L435 NwaCegarLoop]: 1761 mSDtfsCounter, 888 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2456 mSolverCounterSat, 803 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 1897 SdHoareTripleChecker+Invalid, 3259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 803 IncrementalHoareTripleChecker+Valid, 2456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-24 02:07:44,511 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 1897 Invalid, 3259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [803 Valid, 2456 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-11-24 02:07:44,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152363 states. [2024-11-24 02:07:46,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152363 to 142120. [2024-11-24 02:07:46,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142120 states, 142119 states have (on average 1.1081628775884997) internal successors, (157491), 142119 states have internal predecessors, (157491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:46,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142120 states to 142120 states and 157491 transitions. [2024-11-24 02:07:46,572 INFO L78 Accepts]: Start accepts. Automaton has 142120 states and 157491 transitions. Word has length 439 [2024-11-24 02:07:46,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:07:46,572 INFO L471 AbstractCegarLoop]: Abstraction has 142120 states and 157491 transitions. [2024-11-24 02:07:46,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:46,573 INFO L276 IsEmpty]: Start isEmpty. Operand 142120 states and 157491 transitions. [2024-11-24 02:07:46,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2024-11-24 02:07:46,580 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:07:46,580 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-24 02:07:46,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 02:07:46,581 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:07:46,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:07:46,581 INFO L85 PathProgramCache]: Analyzing trace with hash -525425170, now seen corresponding path program 1 times [2024-11-24 02:07:46,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:07:46,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563917021] [2024-11-24 02:07:46,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:07:46,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:07:46,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:07:48,116 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 227 proven. 75 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2024-11-24 02:07:48,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:07:48,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563917021] [2024-11-24 02:07:48,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563917021] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:07:48,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900474478] [2024-11-24 02:07:48,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:07:48,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:07:48,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aea1faf-ae19-4d38-96af-cdfcd3f51619/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:07:48,120 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aea1faf-ae19-4d38-96af-cdfcd3f51619/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:07:48,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aea1faf-ae19-4d38-96af-cdfcd3f51619/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 02:07:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:07:48,569 INFO L256 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-24 02:07:48,576 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:07:49,270 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 227 proven. 0 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2024-11-24 02:07:49,270 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 02:07:49,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900474478] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:07:49,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 02:07:49,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-24 02:07:49,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224353491] [2024-11-24 02:07:49,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:07:49,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:07:49,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:07:49,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:07:49,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 02:07:49,272 INFO L87 Difference]: Start difference. First operand 142120 states and 157491 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:54,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:07:54,333 INFO L93 Difference]: Finished difference Result 283440 states and 314180 transitions. [2024-11-24 02:07:54,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:07:54,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 456 [2024-11-24 02:07:54,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:07:54,478 INFO L225 Difference]: With dead ends: 283440 [2024-11-24 02:07:54,478 INFO L226 Difference]: Without dead ends: 142109 [2024-11-24 02:07:54,524 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 02:07:54,525 INFO L435 NwaCegarLoop]: 635 mSDtfsCounter, 1005 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2301 mSolverCounterSat, 516 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 2817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 516 IncrementalHoareTripleChecker+Valid, 2301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-24 02:07:54,525 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1005 Valid, 755 Invalid, 2817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [516 Valid, 2301 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-24 02:07:54,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142109 states. [2024-11-24 02:07:56,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142109 to 142106. [2024-11-24 02:07:56,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142106 states, 142105 states have (on average 1.0810949649906758) internal successors, (153629), 142105 states have internal predecessors, (153629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:56,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142106 states to 142106 states and 153629 transitions. [2024-11-24 02:07:56,453 INFO L78 Accepts]: Start accepts. Automaton has 142106 states and 153629 transitions. Word has length 456 [2024-11-24 02:07:56,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:07:56,453 INFO L471 AbstractCegarLoop]: Abstraction has 142106 states and 153629 transitions. [2024-11-24 02:07:56,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:07:56,454 INFO L276 IsEmpty]: Start isEmpty. Operand 142106 states and 153629 transitions. [2024-11-24 02:07:56,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2024-11-24 02:07:56,461 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:07:56,462 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2024-11-24 02:07:56,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aea1faf-ae19-4d38-96af-cdfcd3f51619/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 02:07:56,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aea1faf-ae19-4d38-96af-cdfcd3f51619/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-24 02:07:56,662 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:07:56,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:07:56,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1710850426, now seen corresponding path program 1 times [2024-11-24 02:07:56,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:07:56,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286359913] [2024-11-24 02:07:56,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:07:56,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:07:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:07:57,833 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 427 proven. 0 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2024-11-24 02:07:57,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:07:57,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286359913] [2024-11-24 02:07:57,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286359913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:07:57,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:07:57,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 02:07:57,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143175470] [2024-11-24 02:07:57,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:07:57,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:07:57,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:07:57,835 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:07:57,835 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:07:57,836 INFO L87 Difference]: Start difference. First operand 142106 states and 153629 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:08:03,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:08:03,052 INFO L93 Difference]: Finished difference Result 283421 states and 306465 transitions. [2024-11-24 02:08:03,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:08:03,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 461 [2024-11-24 02:08:03,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:08:03,197 INFO L225 Difference]: With dead ends: 283421 [2024-11-24 02:08:03,198 INFO L226 Difference]: Without dead ends: 142104 [2024-11-24 02:08:03,245 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:08:03,246 INFO L435 NwaCegarLoop]: 1314 mSDtfsCounter, 1108 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2371 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 2792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 2371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-24 02:08:03,246 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1108 Valid, 1392 Invalid, 2792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 2371 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-24 02:08:03,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142104 states. [2024-11-24 02:08:04,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142104 to 142103. [2024-11-24 02:08:05,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142103 states, 142102 states have (on average 1.0619484595572195) internal successors, (150905), 142102 states have internal predecessors, (150905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:08:05,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142103 states to 142103 states and 150905 transitions. [2024-11-24 02:08:05,321 INFO L78 Accepts]: Start accepts. Automaton has 142103 states and 150905 transitions. Word has length 461 [2024-11-24 02:08:05,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:08:05,322 INFO L471 AbstractCegarLoop]: Abstraction has 142103 states and 150905 transitions. [2024-11-24 02:08:05,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:08:05,322 INFO L276 IsEmpty]: Start isEmpty. Operand 142103 states and 150905 transitions. [2024-11-24 02:08:05,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2024-11-24 02:08:05,337 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:08:05,337 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:08:05,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 02:08:05,338 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:08:05,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:08:05,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1816527161, now seen corresponding path program 1 times [2024-11-24 02:08:05,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:08:05,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750683057] [2024-11-24 02:08:05,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:08:05,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:08:05,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:08:07,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 583 proven. 100 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2024-11-24 02:08:07,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:08:07,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750683057] [2024-11-24 02:08:07,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750683057] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 02:08:07,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835311239] [2024-11-24 02:08:07,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:08:07,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 02:08:07,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aea1faf-ae19-4d38-96af-cdfcd3f51619/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 02:08:07,283 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aea1faf-ae19-4d38-96af-cdfcd3f51619/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 02:08:07,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aea1faf-ae19-4d38-96af-cdfcd3f51619/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 02:08:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:08:07,539 INFO L256 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 02:08:07,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 02:08:08,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 834 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-11-24 02:08:08,698 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 02:08:08,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835311239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:08:08,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 02:08:08,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-24 02:08:08,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874704202] [2024-11-24 02:08:08,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:08:08,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 02:08:08,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:08:08,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 02:08:08,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 02:08:08,701 INFO L87 Difference]: Start difference. First operand 142103 states and 150905 transitions. Second operand has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:08:14,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:08:14,779 INFO L93 Difference]: Finished difference Result 275542 states and 293231 transitions. [2024-11-24 02:08:14,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 02:08:14,779 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 550 [2024-11-24 02:08:14,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:08:14,983 INFO L225 Difference]: With dead ends: 275542 [2024-11-24 02:08:14,983 INFO L226 Difference]: Without dead ends: 149187 [2024-11-24 02:08:15,040 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 549 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 02:08:15,040 INFO L435 NwaCegarLoop]: 622 mSDtfsCounter, 1654 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 4452 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1654 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 4760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 4452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-24 02:08:15,041 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1654 Valid, 876 Invalid, 4760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 4452 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-24 02:08:15,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149187 states. [2024-11-24 02:08:16,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149187 to 146825. [2024-11-24 02:08:16,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146825 states, 146824 states have (on average 1.0610050128044461) internal successors, (155781), 146824 states have internal predecessors, (155781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:08:16,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146825 states to 146825 states and 155781 transitions. [2024-11-24 02:08:16,999 INFO L78 Accepts]: Start accepts. Automaton has 146825 states and 155781 transitions. Word has length 550 [2024-11-24 02:08:17,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:08:17,000 INFO L471 AbstractCegarLoop]: Abstraction has 146825 states and 155781 transitions. [2024-11-24 02:08:17,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:08:17,001 INFO L276 IsEmpty]: Start isEmpty. Operand 146825 states and 155781 transitions. [2024-11-24 02:08:17,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2024-11-24 02:08:17,010 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:08:17,010 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 02:08:17,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aea1faf-ae19-4d38-96af-cdfcd3f51619/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-24 02:08:17,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aea1faf-ae19-4d38-96af-cdfcd3f51619/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-24 02:08:17,211 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:08:17,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:08:17,211 INFO L85 PathProgramCache]: Analyzing trace with hash 221802481, now seen corresponding path program 1 times [2024-11-24 02:08:17,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:08:17,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738594131] [2024-11-24 02:08:17,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:08:17,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:08:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:08:18,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 612 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2024-11-24 02:08:18,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:08:18,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738594131] [2024-11-24 02:08:18,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738594131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:08:18,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:08:18,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 02:08:18,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921904423] [2024-11-24 02:08:18,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:08:18,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:08:18,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:08:18,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:08:18,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:08:18,139 INFO L87 Difference]: Start difference. First operand 146825 states and 155781 transitions. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:08:23,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:08:23,691 INFO L93 Difference]: Finished difference Result 295257 states and 313205 transitions. [2024-11-24 02:08:23,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:08:23,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 554 [2024-11-24 02:08:23,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:08:23,863 INFO L225 Difference]: With dead ends: 295257 [2024-11-24 02:08:23,864 INFO L226 Difference]: Without dead ends: 147642 [2024-11-24 02:08:23,910 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:08:23,911 INFO L435 NwaCegarLoop]: 1665 mSDtfsCounter, 718 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2426 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 2693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 2426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-24 02:08:23,911 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 1802 Invalid, 2693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 2426 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-24 02:08:24,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147642 states. [2024-11-24 02:08:25,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147642 to 141301. [2024-11-24 02:08:25,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141301 states, 141300 states have (on average 1.05517338995046) internal successors, (149096), 141300 states have internal predecessors, (149096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:08:25,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141301 states to 141301 states and 149096 transitions. [2024-11-24 02:08:25,893 INFO L78 Accepts]: Start accepts. Automaton has 141301 states and 149096 transitions. Word has length 554 [2024-11-24 02:08:25,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:08:25,894 INFO L471 AbstractCegarLoop]: Abstraction has 141301 states and 149096 transitions. [2024-11-24 02:08:25,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:08:25,894 INFO L276 IsEmpty]: Start isEmpty. Operand 141301 states and 149096 transitions. [2024-11-24 02:08:25,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2024-11-24 02:08:25,910 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:08:25,910 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 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] [2024-11-24 02:08:25,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-24 02:08:25,910 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:08:25,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:08:25,911 INFO L85 PathProgramCache]: Analyzing trace with hash -557181852, now seen corresponding path program 1 times [2024-11-24 02:08:25,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:08:25,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688706650] [2024-11-24 02:08:25,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:08:25,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:08:26,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:08:26,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1205 backedges. 663 proven. 0 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2024-11-24 02:08:26,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:08:26,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688706650] [2024-11-24 02:08:26,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688706650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:08:26,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:08:26,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 02:08:26,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395491234] [2024-11-24 02:08:26,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:08:26,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:08:26,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:08:26,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:08:26,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:08:26,859 INFO L87 Difference]: Start difference. First operand 141301 states and 149096 transitions. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:08:32,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 02:08:32,899 INFO L93 Difference]: Finished difference Result 313300 states and 331923 transitions. [2024-11-24 02:08:32,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 02:08:32,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 583 [2024-11-24 02:08:32,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 02:08:33,067 INFO L225 Difference]: With dead ends: 313300 [2024-11-24 02:08:33,067 INFO L226 Difference]: Without dead ends: 172788 [2024-11-24 02:08:33,109 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:08:33,109 INFO L435 NwaCegarLoop]: 1696 mSDtfsCounter, 759 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 2440 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 1834 SdHoareTripleChecker+Invalid, 2893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 2440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-24 02:08:33,110 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 1834 Invalid, 2893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [453 Valid, 2440 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-24 02:08:33,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172788 states. [2024-11-24 02:08:34,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172788 to 169630. [2024-11-24 02:08:34,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169630 states, 169629 states have (on average 1.0525381862771106) internal successors, (178541), 169629 states have internal predecessors, (178541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:08:35,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169630 states to 169630 states and 178541 transitions. [2024-11-24 02:08:35,562 INFO L78 Accepts]: Start accepts. Automaton has 169630 states and 178541 transitions. Word has length 583 [2024-11-24 02:08:35,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 02:08:35,563 INFO L471 AbstractCegarLoop]: Abstraction has 169630 states and 178541 transitions. [2024-11-24 02:08:35,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 02:08:35,563 INFO L276 IsEmpty]: Start isEmpty. Operand 169630 states and 178541 transitions. [2024-11-24 02:08:35,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2024-11-24 02:08:35,576 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 02:08:35,576 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-24 02:08:35,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-24 02:08:35,577 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 02:08:35,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 02:08:35,577 INFO L85 PathProgramCache]: Analyzing trace with hash -663522720, now seen corresponding path program 1 times [2024-11-24 02:08:35,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 02:08:35,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545264755] [2024-11-24 02:08:35,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 02:08:35,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 02:08:35,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 02:08:35,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1237 backedges. 861 proven. 0 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2024-11-24 02:08:35,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 02:08:35,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545264755] [2024-11-24 02:08:35,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545264755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 02:08:35,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 02:08:35,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 02:08:35,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950826902] [2024-11-24 02:08:35,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 02:08:35,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 02:08:35,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 02:08:35,915 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 02:08:35,915 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 02:08:35,915 INFO L87 Difference]: Start difference. First operand 169630 states and 178541 transitions. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)