./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label06.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label06.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1 --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 4eb775f57791ca8f3541a03278dc5eb83ecb8d3533ee7aa5dd1ca1cf24d1fbf4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 13:15:45,290 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 13:15:45,345 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 13:15:45,349 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 13:15:45,349 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 13:15:45,370 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 13:15:45,370 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 13:15:45,371 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 13:15:45,371 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 13:15:45,371 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 13:15:45,371 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 13:15:45,371 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 13:15:45,372 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 13:15:45,372 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 13:15:45,372 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 13:15:45,372 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 13:15:45,372 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 13:15:45,372 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 13:15:45,372 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 13:15:45,372 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 13:15:45,373 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 13:15:45,373 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 13:15:45,373 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 13:15:45,373 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 13:15:45,373 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 13:15:45,373 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 13:15:45,373 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 13:15:45,373 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 13:15:45,373 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 13:15:45,373 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:15:45,373 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:15:45,374 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:15:45,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:15:45,374 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 13:15:45,374 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:15:45,374 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:15:45,374 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:15:45,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:15:45,374 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 13:15:45,374 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 13:15:45,374 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 13:15:45,375 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 13:15:45,375 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 13:15:45,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 13:15:45,375 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 13:15:45,375 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 13:15:45,375 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 13:15:45,375 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 13:15:45,375 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_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1 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 -> 4eb775f57791ca8f3541a03278dc5eb83ecb8d3533ee7aa5dd1ca1cf24d1fbf4 [2024-12-02 13:15:45,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 13:15:45,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 13:15:45,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 13:15:45,602 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 13:15:45,603 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 13:15:45,604 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label06.c [2024-12-02 13:15:48,222 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/data/f3d03a51c/43cb9b4ab025457fb2ddf4487a5ba7a2/FLAG94641da56 [2024-12-02 13:15:48,622 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 13:15:48,623 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label06.c [2024-12-02 13:15:48,646 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/data/f3d03a51c/43cb9b4ab025457fb2ddf4487a5ba7a2/FLAG94641da56 [2024-12-02 13:15:48,810 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/data/f3d03a51c/43cb9b4ab025457fb2ddf4487a5ba7a2 [2024-12-02 13:15:48,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 13:15:48,813 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 13:15:48,814 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 13:15:48,814 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 13:15:48,817 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 13:15:48,817 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:15:48" (1/1) ... [2024-12-02 13:15:48,818 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7633aa6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:15:48, skipping insertion in model container [2024-12-02 13:15:48,818 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:15:48" (1/1) ... [2024-12-02 13:15:48,888 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 13:15:49,127 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_d8535c8f-622c-477e-8924-cd8dce3f9228/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label06.c[6354,6367] [2024-12-02 13:15:49,165 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_d8535c8f-622c-477e-8924-cd8dce3f9228/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label06.c[9171,9184] [2024-12-02 13:15:49,678 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:15:49,687 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 13:15:49,709 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_d8535c8f-622c-477e-8924-cd8dce3f9228/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label06.c[6354,6367] [2024-12-02 13:15:49,715 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_d8535c8f-622c-477e-8924-cd8dce3f9228/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label06.c[9171,9184] [2024-12-02 13:15:50,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:15:50,050 INFO L204 MainTranslator]: Completed translation [2024-12-02 13:15:50,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:15:50 WrapperNode [2024-12-02 13:15:50,050 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 13:15:50,051 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 13:15:50,051 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 13:15:50,051 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 13:15:50,056 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:15:50" (1/1) ... [2024-12-02 13:15:50,112 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:15:50" (1/1) ... [2024-12-02 13:15:50,387 INFO L138 Inliner]: procedures = 33, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4981 [2024-12-02 13:15:50,387 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 13:15:50,388 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 13:15:50,388 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 13:15:50,388 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 13:15:50,397 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:15:50" (1/1) ... [2024-12-02 13:15:50,398 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:15:50" (1/1) ... [2024-12-02 13:15:50,445 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:15:50" (1/1) ... [2024-12-02 13:15:50,586 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]. [2024-12-02 13:15:50,586 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:15:50" (1/1) ... [2024-12-02 13:15:50,586 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:15:50" (1/1) ... [2024-12-02 13:15:50,765 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:15:50" (1/1) ... [2024-12-02 13:15:50,777 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:15:50" (1/1) ... [2024-12-02 13:15:50,796 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:15:50" (1/1) ... [2024-12-02 13:15:50,813 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:15:50" (1/1) ... [2024-12-02 13:15:50,823 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:15:50" (1/1) ... [2024-12-02 13:15:50,885 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 13:15:50,886 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 13:15:50,886 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 13:15:50,886 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 13:15:50,887 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:15:50" (1/1) ... [2024-12-02 13:15:50,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:15:50,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:15:50,914 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 13:15:50,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 13:15:50,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 13:15:50,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 13:15:50,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 13:15:50,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 13:15:51,020 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 13:15:51,021 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 13:15:55,498 INFO L? ?]: Removed 732 outVars from TransFormulas that were not future-live. [2024-12-02 13:15:55,499 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 13:15:55,526 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 13:15:55,526 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-12-02 13:15:55,526 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:15:55 BoogieIcfgContainer [2024-12-02 13:15:55,526 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 13:15:55,528 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 13:15:55,528 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 13:15:55,533 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 13:15:55,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:15:48" (1/3) ... [2024-12-02 13:15:55,534 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6285a562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:15:55, skipping insertion in model container [2024-12-02 13:15:55,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:15:50" (2/3) ... [2024-12-02 13:15:55,534 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6285a562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:15:55, skipping insertion in model container [2024-12-02 13:15:55,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:15:55" (3/3) ... [2024-12-02 13:15:55,536 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label06.c [2024-12-02 13:15:55,551 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 13:15:55,553 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label06.c that has 1 procedures, 873 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-12-02 13:15:55,625 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 13:15:55,636 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;@4b38f680, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 13:15:55,636 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-02 13:15:55,643 INFO L276 IsEmpty]: Start isEmpty. Operand has 873 states, 870 states have (on average 1.9057471264367816) internal successors, (1658), 872 states have internal predecessors, (1658), 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) [2024-12-02 13:15:55,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-12-02 13:15:55,649 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:15:55,649 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] [2024-12-02 13:15:55,650 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:15:55,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:15:55,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1661669358, now seen corresponding path program 1 times [2024-12-02 13:15:55,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:15:55,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947292337] [2024-12-02 13:15:55,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:15:55,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:15:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:15:55,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:15:55,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:15:55,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947292337] [2024-12-02 13:15:55,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947292337] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:15:55,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:15:55,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 13:15:55,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383373671] [2024-12-02 13:15:55,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:15:55,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 13:15:55,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:15:55,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 13:15:55,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 13:15:55,856 INFO L87 Difference]: Start difference. First operand has 873 states, 870 states have (on average 1.9057471264367816) internal successors, (1658), 872 states have internal predecessors, (1658), 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 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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) [2024-12-02 13:15:55,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:15:55,924 INFO L93 Difference]: Finished difference Result 1724 states and 3276 transitions. [2024-12-02 13:15:55,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 13:15:55,926 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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 21 [2024-12-02 13:15:55,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:15:55,939 INFO L225 Difference]: With dead ends: 1724 [2024-12-02 13:15:55,939 INFO L226 Difference]: Without dead ends: 807 [2024-12-02 13:15:55,944 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 13:15:55,947 INFO L435 NwaCegarLoop]: 1592 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:15:55,947 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1592 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:15:55,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2024-12-02 13:15:56,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 807. [2024-12-02 13:15:56,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 805 states have (on average 1.8944099378881987) internal successors, (1525), 806 states have internal predecessors, (1525), 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) [2024-12-02 13:15:56,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1525 transitions. [2024-12-02 13:15:56,011 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1525 transitions. Word has length 21 [2024-12-02 13:15:56,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:15:56,011 INFO L471 AbstractCegarLoop]: Abstraction has 807 states and 1525 transitions. [2024-12-02 13:15:56,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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) [2024-12-02 13:15:56,012 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1525 transitions. [2024-12-02 13:15:56,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-12-02 13:15:56,013 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:15:56,013 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] [2024-12-02 13:15:56,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 13:15:56,013 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:15:56,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:15:56,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1353434260, now seen corresponding path program 1 times [2024-12-02 13:15:56,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:15:56,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86452602] [2024-12-02 13:15:56,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:15:56,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:15:56,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:15:56,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:15:56,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:15:56,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86452602] [2024-12-02 13:15:56,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86452602] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:15:56,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:15:56,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:15:56,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014642506] [2024-12-02 13:15:56,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:15:56,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:15:56,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:15:56,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:15:56,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:15:56,164 INFO L87 Difference]: Start difference. First operand 807 states and 1525 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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) [2024-12-02 13:15:56,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:15:56,264 INFO L93 Difference]: Finished difference Result 873 states and 1625 transitions. [2024-12-02 13:15:56,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:15:56,264 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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 21 [2024-12-02 13:15:56,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:15:56,269 INFO L225 Difference]: With dead ends: 873 [2024-12-02 13:15:56,269 INFO L226 Difference]: Without dead ends: 838 [2024-12-02 13:15:56,269 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:15:56,270 INFO L435 NwaCegarLoop]: 1521 mSDtfsCounter, 47 mSDsluCounter, 4541 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 6062 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:15:56,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 6062 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 13:15:56,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2024-12-02 13:15:56,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 807. [2024-12-02 13:15:56,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 805 states have (on average 1.8745341614906832) internal successors, (1509), 806 states have internal predecessors, (1509), 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) [2024-12-02 13:15:56,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1509 transitions. [2024-12-02 13:15:56,291 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1509 transitions. Word has length 21 [2024-12-02 13:15:56,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:15:56,292 INFO L471 AbstractCegarLoop]: Abstraction has 807 states and 1509 transitions. [2024-12-02 13:15:56,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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) [2024-12-02 13:15:56,292 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1509 transitions. [2024-12-02 13:15:56,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-12-02 13:15:56,292 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:15:56,292 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] [2024-12-02 13:15:56,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 13:15:56,293 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:15:56,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:15:56,293 INFO L85 PathProgramCache]: Analyzing trace with hash -2014528043, now seen corresponding path program 1 times [2024-12-02 13:15:56,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:15:56,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300057486] [2024-12-02 13:15:56,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:15:56,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:15:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:15:56,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:15:56,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:15:56,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300057486] [2024-12-02 13:15:56,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300057486] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:15:56,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:15:56,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 13:15:56,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624274751] [2024-12-02 13:15:56,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:15:56,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:15:56,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:15:56,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:15:56,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:15:56,372 INFO L87 Difference]: Start difference. First operand 807 states and 1509 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2024-12-02 13:15:59,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:15:59,716 INFO L93 Difference]: Finished difference Result 2311 states and 4382 transitions. [2024-12-02 13:15:59,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:15:59,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 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 24 [2024-12-02 13:15:59,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:15:59,723 INFO L225 Difference]: With dead ends: 2311 [2024-12-02 13:15:59,724 INFO L226 Difference]: Without dead ends: 1558 [2024-12-02 13:15:59,725 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 [2024-12-02 13:15:59,726 INFO L435 NwaCegarLoop]: 538 mSDtfsCounter, 847 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:15:59,726 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 545 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-12-02 13:15:59,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2024-12-02 13:15:59,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1558. [2024-12-02 13:15:59,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1558 states, 1556 states have (on average 1.5989717223650386) internal successors, (2488), 1557 states have internal predecessors, (2488), 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) [2024-12-02 13:15:59,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2488 transitions. [2024-12-02 13:15:59,781 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2488 transitions. Word has length 24 [2024-12-02 13:15:59,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:15:59,782 INFO L471 AbstractCegarLoop]: Abstraction has 1558 states and 2488 transitions. [2024-12-02 13:15:59,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2024-12-02 13:15:59,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2488 transitions. [2024-12-02 13:15:59,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-12-02 13:15:59,783 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:15:59,783 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] [2024-12-02 13:15:59,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 13:15:59,783 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:15:59,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:15:59,784 INFO L85 PathProgramCache]: Analyzing trace with hash 904930012, now seen corresponding path program 1 times [2024-12-02 13:15:59,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:15:59,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965411398] [2024-12-02 13:15:59,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:15:59,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:15:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:15:59,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:15:59,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:15:59,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965411398] [2024-12-02 13:15:59,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965411398] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:15:59,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:15:59,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:15:59,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666216224] [2024-12-02 13:15:59,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:15:59,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:15:59,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:15:59,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:15:59,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:15:59,918 INFO L87 Difference]: Start difference. First operand 1558 states and 2488 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2024-12-02 13:16:00,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:16:00,039 INFO L93 Difference]: Finished difference Result 1744 states and 2776 transitions. [2024-12-02 13:16:00,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 13:16:00,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 36 [2024-12-02 13:16:00,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:16:00,046 INFO L225 Difference]: With dead ends: 1744 [2024-12-02 13:16:00,046 INFO L226 Difference]: Without dead ends: 1713 [2024-12-02 13:16:00,047 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-12-02 13:16:00,048 INFO L435 NwaCegarLoop]: 1503 mSDtfsCounter, 4627 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4627 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:16:00,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4627 Valid, 1775 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 13:16:00,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2024-12-02 13:16:00,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1587. [2024-12-02 13:16:00,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1587 states, 1585 states have (on average 1.5981072555205047) internal successors, (2533), 1586 states have internal predecessors, (2533), 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) [2024-12-02 13:16:00,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 2533 transitions. [2024-12-02 13:16:00,101 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 2533 transitions. Word has length 36 [2024-12-02 13:16:00,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:16:00,101 INFO L471 AbstractCegarLoop]: Abstraction has 1587 states and 2533 transitions. [2024-12-02 13:16:00,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2024-12-02 13:16:00,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 2533 transitions. [2024-12-02 13:16:00,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-12-02 13:16:00,102 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:16:00,102 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] [2024-12-02 13:16:00,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 13:16:00,102 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:16:00,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:00,103 INFO L85 PathProgramCache]: Analyzing trace with hash 638646444, now seen corresponding path program 1 times [2024-12-02 13:16:00,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:00,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293490577] [2024-12-02 13:16:00,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:00,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:00,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:00,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:16:00,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293490577] [2024-12-02 13:16:00,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293490577] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:16:00,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:16:00,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:16:00,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016868258] [2024-12-02 13:16:00,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:16:00,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:16:00,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:16:00,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:16:00,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:16:00,170 INFO L87 Difference]: Start difference. First operand 1587 states and 2533 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-12-02 13:16:00,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:16:00,199 INFO L93 Difference]: Finished difference Result 1696 states and 2700 transitions. [2024-12-02 13:16:00,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:16:00,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 38 [2024-12-02 13:16:00,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:16:00,206 INFO L225 Difference]: With dead ends: 1696 [2024-12-02 13:16:00,206 INFO L226 Difference]: Without dead ends: 1636 [2024-12-02 13:16:00,207 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 [2024-12-02 13:16:00,207 INFO L435 NwaCegarLoop]: 1506 mSDtfsCounter, 1466 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:16:00,208 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1549 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:16:00,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2024-12-02 13:16:00,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1634. [2024-12-02 13:16:00,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1632 states have (on average 1.5949754901960784) internal successors, (2603), 1633 states have internal predecessors, (2603), 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) [2024-12-02 13:16:00,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 2603 transitions. [2024-12-02 13:16:00,241 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 2603 transitions. Word has length 38 [2024-12-02 13:16:00,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:16:00,242 INFO L471 AbstractCegarLoop]: Abstraction has 1634 states and 2603 transitions. [2024-12-02 13:16:00,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-12-02 13:16:00,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 2603 transitions. [2024-12-02 13:16:00,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-12-02 13:16:00,243 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:16:00,243 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] [2024-12-02 13:16:00,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 13:16:00,243 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:16:00,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:00,244 INFO L85 PathProgramCache]: Analyzing trace with hash 705139956, now seen corresponding path program 1 times [2024-12-02 13:16:00,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:00,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133108295] [2024-12-02 13:16:00,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:00,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:00,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:00,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:16:00,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133108295] [2024-12-02 13:16:00,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133108295] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:16:00,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:16:00,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:16:00,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251740991] [2024-12-02 13:16:00,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:16:00,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:16:00,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:16:00,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:16:00,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:16:00,404 INFO L87 Difference]: Start difference. First operand 1634 states and 2603 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-12-02 13:16:00,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:16:00,481 INFO L93 Difference]: Finished difference Result 1743 states and 2767 transitions. [2024-12-02 13:16:00,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:16:00,482 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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 38 [2024-12-02 13:16:00,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:16:00,488 INFO L225 Difference]: With dead ends: 1743 [2024-12-02 13:16:00,488 INFO L226 Difference]: Without dead ends: 1636 [2024-12-02 13:16:00,489 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-12-02 13:16:00,489 INFO L435 NwaCegarLoop]: 1504 mSDtfsCounter, 4417 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4417 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:16:00,490 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4417 Valid, 1592 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:16:00,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2024-12-02 13:16:00,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1634. [2024-12-02 13:16:00,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1632 states have (on average 1.59375) internal successors, (2601), 1633 states have internal predecessors, (2601), 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) [2024-12-02 13:16:00,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 2601 transitions. [2024-12-02 13:16:00,527 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 2601 transitions. Word has length 38 [2024-12-02 13:16:00,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:16:00,527 INFO L471 AbstractCegarLoop]: Abstraction has 1634 states and 2601 transitions. [2024-12-02 13:16:00,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2024-12-02 13:16:00,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 2601 transitions. [2024-12-02 13:16:00,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-12-02 13:16:00,528 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:16:00,528 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] [2024-12-02 13:16:00,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 13:16:00,528 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:16:00,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:00,529 INFO L85 PathProgramCache]: Analyzing trace with hash -30221064, now seen corresponding path program 1 times [2024-12-02 13:16:00,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:00,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225728695] [2024-12-02 13:16:00,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:00,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:00,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:00,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:00,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:16:00,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225728695] [2024-12-02 13:16:00,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225728695] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:16:00,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:16:00,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:16:00,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283910998] [2024-12-02 13:16:00,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:16:00,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:16:00,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:16:00,701 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:16:00,701 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:16:00,701 INFO L87 Difference]: Start difference. First operand 1634 states and 2601 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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) [2024-12-02 13:16:00,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:16:00,739 INFO L93 Difference]: Finished difference Result 1642 states and 2610 transitions. [2024-12-02 13:16:00,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:16:00,739 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 39 [2024-12-02 13:16:00,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:16:00,745 INFO L225 Difference]: With dead ends: 1642 [2024-12-02 13:16:00,745 INFO L226 Difference]: Without dead ends: 1640 [2024-12-02 13:16:00,746 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:16:00,746 INFO L435 NwaCegarLoop]: 1506 mSDtfsCounter, 0 mSDsluCounter, 4509 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6015 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:16:00,746 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6015 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:16:00,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2024-12-02 13:16:00,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1640. [2024-12-02 13:16:00,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1640 states, 1638 states have (on average 1.5909645909645909) internal successors, (2606), 1639 states have internal predecessors, (2606), 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) [2024-12-02 13:16:00,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1640 states to 1640 states and 2606 transitions. [2024-12-02 13:16:00,779 INFO L78 Accepts]: Start accepts. Automaton has 1640 states and 2606 transitions. Word has length 39 [2024-12-02 13:16:00,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:16:00,780 INFO L471 AbstractCegarLoop]: Abstraction has 1640 states and 2606 transitions. [2024-12-02 13:16:00,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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) [2024-12-02 13:16:00,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1640 states and 2606 transitions. [2024-12-02 13:16:00,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-12-02 13:16:00,780 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:16:00,781 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] [2024-12-02 13:16:00,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 13:16:00,781 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:16:00,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:00,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1276756908, now seen corresponding path program 1 times [2024-12-02 13:16:00,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:00,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793833631] [2024-12-02 13:16:00,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:00,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:00,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:00,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:16:00,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793833631] [2024-12-02 13:16:00,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793833631] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:16:00,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:16:00,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:16:00,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979227080] [2024-12-02 13:16:00,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:16:00,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:16:00,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:16:00,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:16:00,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:16:00,831 INFO L87 Difference]: Start difference. First operand 1640 states and 2606 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-12-02 13:16:00,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:16:00,856 INFO L93 Difference]: Finished difference Result 1850 states and 2910 transitions. [2024-12-02 13:16:00,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:16:00,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 40 [2024-12-02 13:16:00,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:16:00,862 INFO L225 Difference]: With dead ends: 1850 [2024-12-02 13:16:00,862 INFO L226 Difference]: Without dead ends: 1737 [2024-12-02 13:16:00,863 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 [2024-12-02 13:16:00,863 INFO L435 NwaCegarLoop]: 1535 mSDtfsCounter, 1474 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:16:00,864 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1588 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:16:00,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1737 states. [2024-12-02 13:16:00,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1737 to 1735. [2024-12-02 13:16:00,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1735 states, 1733 states have (on average 1.5804962492787074) internal successors, (2739), 1734 states have internal predecessors, (2739), 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) [2024-12-02 13:16:00,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1735 states to 1735 states and 2739 transitions. [2024-12-02 13:16:00,899 INFO L78 Accepts]: Start accepts. Automaton has 1735 states and 2739 transitions. Word has length 40 [2024-12-02 13:16:00,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:16:00,900 INFO L471 AbstractCegarLoop]: Abstraction has 1735 states and 2739 transitions. [2024-12-02 13:16:00,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-12-02 13:16:00,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1735 states and 2739 transitions. [2024-12-02 13:16:00,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-12-02 13:16:00,900 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:16:00,901 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] [2024-12-02 13:16:00,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 13:16:00,901 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:16:00,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:00,901 INFO L85 PathProgramCache]: Analyzing trace with hash 504175956, now seen corresponding path program 1 times [2024-12-02 13:16:00,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:00,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738349747] [2024-12-02 13:16:00,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:00,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:00,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:00,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:16:00,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738349747] [2024-12-02 13:16:00,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738349747] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:16:00,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:16:00,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:16:00,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877146899] [2024-12-02 13:16:00,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:16:00,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:16:00,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:16:00,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:16:00,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:16:00,949 INFO L87 Difference]: Start difference. First operand 1735 states and 2739 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-12-02 13:16:00,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:16:00,978 INFO L93 Difference]: Finished difference Result 2119 states and 3281 transitions. [2024-12-02 13:16:00,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:16:00,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 40 [2024-12-02 13:16:00,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:16:00,984 INFO L225 Difference]: With dead ends: 2119 [2024-12-02 13:16:00,984 INFO L226 Difference]: Without dead ends: 1911 [2024-12-02 13:16:00,985 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 [2024-12-02 13:16:00,986 INFO L435 NwaCegarLoop]: 1533 mSDtfsCounter, 1472 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:16:00,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1590 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:16:00,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1911 states. [2024-12-02 13:16:01,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1911 to 1909. [2024-12-02 13:16:01,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1909 states, 1907 states have (on average 1.5589931830099633) internal successors, (2973), 1908 states have internal predecessors, (2973), 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) [2024-12-02 13:16:01,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1909 states to 1909 states and 2973 transitions. [2024-12-02 13:16:01,025 INFO L78 Accepts]: Start accepts. Automaton has 1909 states and 2973 transitions. Word has length 40 [2024-12-02 13:16:01,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:16:01,026 INFO L471 AbstractCegarLoop]: Abstraction has 1909 states and 2973 transitions. [2024-12-02 13:16:01,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-12-02 13:16:01,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1909 states and 2973 transitions. [2024-12-02 13:16:01,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-12-02 13:16:01,026 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:16:01,026 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] [2024-12-02 13:16:01,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 13:16:01,027 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:16:01,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:01,027 INFO L85 PathProgramCache]: Analyzing trace with hash 938711892, now seen corresponding path program 1 times [2024-12-02 13:16:01,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:01,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052113922] [2024-12-02 13:16:01,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:01,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:01,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:01,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:01,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:16:01,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052113922] [2024-12-02 13:16:01,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052113922] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:16:01,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:16:01,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:16:01,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547552967] [2024-12-02 13:16:01,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:16:01,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:16:01,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:16:01,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:16:01,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:16:01,074 INFO L87 Difference]: Start difference. First operand 1909 states and 2973 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-12-02 13:16:01,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:16:01,106 INFO L93 Difference]: Finished difference Result 2332 states and 3571 transitions. [2024-12-02 13:16:01,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:16:01,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 40 [2024-12-02 13:16:01,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:16:01,113 INFO L225 Difference]: With dead ends: 2332 [2024-12-02 13:16:01,113 INFO L226 Difference]: Without dead ends: 2106 [2024-12-02 13:16:01,114 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 [2024-12-02 13:16:01,115 INFO L435 NwaCegarLoop]: 1541 mSDtfsCounter, 1476 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:16:01,115 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1590 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:16:01,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2024-12-02 13:16:01,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 2104. [2024-12-02 13:16:01,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2104 states, 2102 states have (on average 1.5394862036156043) internal successors, (3236), 2103 states have internal predecessors, (3236), 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) [2024-12-02 13:16:01,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2104 states to 2104 states and 3236 transitions. [2024-12-02 13:16:01,159 INFO L78 Accepts]: Start accepts. Automaton has 2104 states and 3236 transitions. Word has length 40 [2024-12-02 13:16:01,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:16:01,159 INFO L471 AbstractCegarLoop]: Abstraction has 2104 states and 3236 transitions. [2024-12-02 13:16:01,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-12-02 13:16:01,160 INFO L276 IsEmpty]: Start isEmpty. Operand 2104 states and 3236 transitions. [2024-12-02 13:16:01,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 13:16:01,160 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:16:01,161 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 13:16:01,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 13:16:01,161 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:16:01,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:01,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1906548838, now seen corresponding path program 1 times [2024-12-02 13:16:01,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:01,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317363730] [2024-12-02 13:16:01,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:01,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:01,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:01,274 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 13:16:01,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:16:01,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317363730] [2024-12-02 13:16:01,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317363730] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:16:01,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:16:01,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:16:01,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759631698] [2024-12-02 13:16:01,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:16:01,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:16:01,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:16:01,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:16:01,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:16:01,275 INFO L87 Difference]: Start difference. First operand 2104 states and 3236 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2024-12-02 13:16:01,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:16:01,366 INFO L93 Difference]: Finished difference Result 3960 states and 5788 transitions. [2024-12-02 13:16:01,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:16:01,366 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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 56 [2024-12-02 13:16:01,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:16:01,376 INFO L225 Difference]: With dead ends: 3960 [2024-12-02 13:16:01,376 INFO L226 Difference]: Without dead ends: 3386 [2024-12-02 13:16:01,378 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:16:01,379 INFO L435 NwaCegarLoop]: 1548 mSDtfsCounter, 3044 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3044 SdHoareTripleChecker+Valid, 3149 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:16:01,379 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3044 Valid, 3149 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:16:01,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2024-12-02 13:16:01,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 2676. [2024-12-02 13:16:01,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2676 states, 2674 states have (on average 1.5018698578908003) internal successors, (4016), 2675 states have internal predecessors, (4016), 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) [2024-12-02 13:16:01,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2676 states to 2676 states and 4016 transitions. [2024-12-02 13:16:01,444 INFO L78 Accepts]: Start accepts. Automaton has 2676 states and 4016 transitions. Word has length 56 [2024-12-02 13:16:01,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:16:01,444 INFO L471 AbstractCegarLoop]: Abstraction has 2676 states and 4016 transitions. [2024-12-02 13:16:01,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2024-12-02 13:16:01,444 INFO L276 IsEmpty]: Start isEmpty. Operand 2676 states and 4016 transitions. [2024-12-02 13:16:01,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 13:16:01,445 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:16:01,445 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 13:16:01,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 13:16:01,446 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:16:01,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:01,446 INFO L85 PathProgramCache]: Analyzing trace with hash -125615974, now seen corresponding path program 1 times [2024-12-02 13:16:01,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:01,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150190495] [2024-12-02 13:16:01,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:01,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:01,556 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 13:16:01,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:16:01,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150190495] [2024-12-02 13:16:01,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150190495] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:16:01,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:16:01,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:16:01,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772486784] [2024-12-02 13:16:01,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:16:01,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:16:01,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:16:01,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:16:01,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:16:01,557 INFO L87 Difference]: Start difference. First operand 2676 states and 4016 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-12-02 13:16:01,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:16:01,668 INFO L93 Difference]: Finished difference Result 4532 states and 6568 transitions. [2024-12-02 13:16:01,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:16:01,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 56 [2024-12-02 13:16:01,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:16:01,680 INFO L225 Difference]: With dead ends: 4532 [2024-12-02 13:16:01,680 INFO L226 Difference]: Without dead ends: 3958 [2024-12-02 13:16:01,682 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:16:01,683 INFO L435 NwaCegarLoop]: 1549 mSDtfsCounter, 3048 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3048 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:16:01,683 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3048 Valid, 3155 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:16:01,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3958 states. [2024-12-02 13:16:01,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3958 to 3536. [2024-12-02 13:16:01,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3536 states, 3534 states have (on average 1.4646293152235428) internal successors, (5176), 3535 states have internal predecessors, (5176), 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) [2024-12-02 13:16:01,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3536 states to 3536 states and 5176 transitions. [2024-12-02 13:16:01,769 INFO L78 Accepts]: Start accepts. Automaton has 3536 states and 5176 transitions. Word has length 56 [2024-12-02 13:16:01,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:16:01,769 INFO L471 AbstractCegarLoop]: Abstraction has 3536 states and 5176 transitions. [2024-12-02 13:16:01,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-12-02 13:16:01,770 INFO L276 IsEmpty]: Start isEmpty. Operand 3536 states and 5176 transitions. [2024-12-02 13:16:01,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 13:16:01,771 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:16:01,771 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 13:16:01,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 13:16:01,771 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:16:01,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:01,771 INFO L85 PathProgramCache]: Analyzing trace with hash 308919962, now seen corresponding path program 1 times [2024-12-02 13:16:01,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:01,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637864033] [2024-12-02 13:16:01,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:01,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:01,876 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 13:16:01,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:16:01,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637864033] [2024-12-02 13:16:01,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637864033] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:16:01,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:16:01,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:16:01,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561940745] [2024-12-02 13:16:01,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:16:01,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:16:01,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:16:01,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:16:01,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:16:01,878 INFO L87 Difference]: Start difference. First operand 3536 states and 5176 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-12-02 13:16:02,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:16:02,004 INFO L93 Difference]: Finished difference Result 4792 states and 6932 transitions. [2024-12-02 13:16:02,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:16:02,005 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 56 [2024-12-02 13:16:02,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:16:02,016 INFO L225 Difference]: With dead ends: 4792 [2024-12-02 13:16:02,016 INFO L226 Difference]: Without dead ends: 4374 [2024-12-02 13:16:02,018 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:16:02,018 INFO L435 NwaCegarLoop]: 1547 mSDtfsCounter, 3043 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 3163 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:16:02,019 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3043 Valid, 3163 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:16:02,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4374 states. [2024-12-02 13:16:02,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4374 to 3952. [2024-12-02 13:16:02,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3952 states, 3950 states have (on average 1.4562025316455696) internal successors, (5752), 3951 states have internal predecessors, (5752), 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) [2024-12-02 13:16:02,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3952 states to 3952 states and 5752 transitions. [2024-12-02 13:16:02,103 INFO L78 Accepts]: Start accepts. Automaton has 3952 states and 5752 transitions. Word has length 56 [2024-12-02 13:16:02,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:16:02,103 INFO L471 AbstractCegarLoop]: Abstraction has 3952 states and 5752 transitions. [2024-12-02 13:16:02,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-12-02 13:16:02,103 INFO L276 IsEmpty]: Start isEmpty. Operand 3952 states and 5752 transitions. [2024-12-02 13:16:02,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-12-02 13:16:02,104 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:16:02,104 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 13:16:02,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 13:16:02,104 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:16:02,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:02,105 INFO L85 PathProgramCache]: Analyzing trace with hash 977738755, now seen corresponding path program 1 times [2024-12-02 13:16:02,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:02,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003625381] [2024-12-02 13:16:02,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:02,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:02,192 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:02,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:16:02,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003625381] [2024-12-02 13:16:02,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003625381] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:16:02,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:16:02,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:16:02,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021201093] [2024-12-02 13:16:02,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:16:02,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:16:02,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:16:02,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:16:02,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:16:02,194 INFO L87 Difference]: Start difference. First operand 3952 states and 5752 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2024-12-02 13:16:02,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:16:02,252 INFO L93 Difference]: Finished difference Result 6376 states and 9062 transitions. [2024-12-02 13:16:02,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:16:02,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2024-12-02 13:16:02,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:16:02,263 INFO L225 Difference]: With dead ends: 6376 [2024-12-02 13:16:02,263 INFO L226 Difference]: Without dead ends: 3954 [2024-12-02 13:16:02,266 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 [2024-12-02 13:16:02,266 INFO L435 NwaCegarLoop]: 1528 mSDtfsCounter, 29 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:16:02,266 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3025 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:16:02,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3954 states. [2024-12-02 13:16:02,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3954 to 3952. [2024-12-02 13:16:02,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3952 states, 3950 states have (on average 1.4435443037974685) internal successors, (5702), 3951 states have internal predecessors, (5702), 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) [2024-12-02 13:16:02,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3952 states to 3952 states and 5702 transitions. [2024-12-02 13:16:02,348 INFO L78 Accepts]: Start accepts. Automaton has 3952 states and 5702 transitions. Word has length 57 [2024-12-02 13:16:02,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:16:02,348 INFO L471 AbstractCegarLoop]: Abstraction has 3952 states and 5702 transitions. [2024-12-02 13:16:02,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2024-12-02 13:16:02,348 INFO L276 IsEmpty]: Start isEmpty. Operand 3952 states and 5702 transitions. [2024-12-02 13:16:02,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-12-02 13:16:02,349 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:16:02,349 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 13:16:02,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 13:16:02,349 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:16:02,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:02,349 INFO L85 PathProgramCache]: Analyzing trace with hash 408394290, now seen corresponding path program 1 times [2024-12-02 13:16:02,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:02,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89956916] [2024-12-02 13:16:02,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:02,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:02,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:02,428 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:02,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:16:02,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89956916] [2024-12-02 13:16:02,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89956916] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:16:02,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:16:02,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:16:02,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698703935] [2024-12-02 13:16:02,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:16:02,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:16:02,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:16:02,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:16:02,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:16:02,429 INFO L87 Difference]: Start difference. First operand 3952 states and 5702 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-12-02 13:16:02,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:16:02,465 INFO L93 Difference]: Finished difference Result 4908 states and 6999 transitions. [2024-12-02 13:16:02,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:16:02,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2024-12-02 13:16:02,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:16:02,472 INFO L225 Difference]: With dead ends: 4908 [2024-12-02 13:16:02,472 INFO L226 Difference]: Without dead ends: 2486 [2024-12-02 13:16:02,474 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 [2024-12-02 13:16:02,475 INFO L435 NwaCegarLoop]: 1526 mSDtfsCounter, 23 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3022 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:16:02,475 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3022 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:16:02,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2486 states. [2024-12-02 13:16:02,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2486 to 2477. [2024-12-02 13:16:02,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 2475 states have (on average 1.50020202020202) internal successors, (3713), 2476 states have internal predecessors, (3713), 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) [2024-12-02 13:16:02,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 3713 transitions. [2024-12-02 13:16:02,518 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 3713 transitions. Word has length 58 [2024-12-02 13:16:02,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:16:02,518 INFO L471 AbstractCegarLoop]: Abstraction has 2477 states and 3713 transitions. [2024-12-02 13:16:02,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-12-02 13:16:02,518 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 3713 transitions. [2024-12-02 13:16:02,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-12-02 13:16:02,519 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:16:02,519 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 13:16:02,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 13:16:02,519 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:16:02,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:02,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1553558485, now seen corresponding path program 1 times [2024-12-02 13:16:02,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:02,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231305983] [2024-12-02 13:16:02,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:02,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:02,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:02,601 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:02,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:16:02,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231305983] [2024-12-02 13:16:02,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231305983] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:16:02,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:16:02,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:16:02,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021260820] [2024-12-02 13:16:02,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:16:02,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:16:02,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:16:02,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:16:02,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:16:02,602 INFO L87 Difference]: Start difference. First operand 2477 states and 3713 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 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) [2024-12-02 13:16:02,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:16:02,630 INFO L93 Difference]: Finished difference Result 2949 states and 4345 transitions. [2024-12-02 13:16:02,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:16:02,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 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 [2024-12-02 13:16:02,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:16:02,635 INFO L225 Difference]: With dead ends: 2949 [2024-12-02 13:16:02,635 INFO L226 Difference]: Without dead ends: 2011 [2024-12-02 13:16:02,636 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 [2024-12-02 13:16:02,637 INFO L435 NwaCegarLoop]: 1520 mSDtfsCounter, 25 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:16:02,637 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 3001 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:16:02,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2011 states. [2024-12-02 13:16:02,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2011 to 2009. [2024-12-02 13:16:02,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 2007 states have (on average 1.5316392625809667) internal successors, (3074), 2008 states have internal predecessors, (3074), 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) [2024-12-02 13:16:02,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 3074 transitions. [2024-12-02 13:16:02,668 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 3074 transitions. Word has length 59 [2024-12-02 13:16:02,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:16:02,669 INFO L471 AbstractCegarLoop]: Abstraction has 2009 states and 3074 transitions. [2024-12-02 13:16:02,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 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) [2024-12-02 13:16:02,669 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 3074 transitions. [2024-12-02 13:16:02,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-12-02 13:16:02,669 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:16:02,670 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 13:16:02,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 13:16:02,670 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:16:02,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:02,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1066169817, now seen corresponding path program 1 times [2024-12-02 13:16:02,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:02,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725992905] [2024-12-02 13:16:02,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:02,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:02,800 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 13:16:02,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:16:02,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725992905] [2024-12-02 13:16:02,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725992905] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:16:02,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905195990] [2024-12-02 13:16:02,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:02,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:16:02,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:16:02,803 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:16:02,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 13:16:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:02,904 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 13:16:02,909 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:16:03,336 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:03,337 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:16:04,110 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:04,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905195990] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:16:04,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:16:04,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 9] total 20 [2024-12-02 13:16:04,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13908605] [2024-12-02 13:16:04,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:16:04,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 13:16:04,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:16:04,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 13:16:04,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2024-12-02 13:16:04,112 INFO L87 Difference]: Start difference. First operand 2009 states and 3074 transitions. Second operand has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2024-12-02 13:16:04,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:16:04,864 INFO L93 Difference]: Finished difference Result 3490 states and 4987 transitions. [2024-12-02 13:16:04,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 13:16:04,865 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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 61 [2024-12-02 13:16:04,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:16:04,871 INFO L225 Difference]: With dead ends: 3490 [2024-12-02 13:16:04,871 INFO L226 Difference]: Without dead ends: 3020 [2024-12-02 13:16:04,873 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=394, Invalid=1246, Unknown=0, NotChecked=0, Total=1640 [2024-12-02 13:16:04,873 INFO L435 NwaCegarLoop]: 1487 mSDtfsCounter, 15564 mSDsluCounter, 3152 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15564 SdHoareTripleChecker+Valid, 4639 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:16:04,874 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15564 Valid, 4639 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 13:16:04,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3020 states. [2024-12-02 13:16:04,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3020 to 2880. [2024-12-02 13:16:04,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2880 states, 2878 states have (on average 1.4388464211257819) internal successors, (4141), 2879 states have internal predecessors, (4141), 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) [2024-12-02 13:16:04,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 4141 transitions. [2024-12-02 13:16:04,932 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 4141 transitions. Word has length 61 [2024-12-02 13:16:04,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:16:04,932 INFO L471 AbstractCegarLoop]: Abstraction has 2880 states and 4141 transitions. [2024-12-02 13:16:04,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.05) internal successors, (161), 20 states have internal predecessors, (161), 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) [2024-12-02 13:16:04,932 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 4141 transitions. [2024-12-02 13:16:04,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-02 13:16:04,933 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:16:04,933 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 13:16:04,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 13:16:05,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 13:16:05,133 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:16:05,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:05,134 INFO L85 PathProgramCache]: Analyzing trace with hash -2045594482, now seen corresponding path program 1 times [2024-12-02 13:16:05,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:05,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60635739] [2024-12-02 13:16:05,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:05,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:05,540 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:05,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:16:05,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60635739] [2024-12-02 13:16:05,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60635739] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:16:05,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804195302] [2024-12-02 13:16:05,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:05,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:16:05,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:16:05,543 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:16:05,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 13:16:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:05,637 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 13:16:05,640 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:16:06,003 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:06,003 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:16:06,716 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:06,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804195302] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:16:06,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:16:06,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-12-02 13:16:06,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179939455] [2024-12-02 13:16:06,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:16:06,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-12-02 13:16:06,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:16:06,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-12-02 13:16:06,718 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2024-12-02 13:16:06,718 INFO L87 Difference]: Start difference. First operand 2880 states and 4141 transitions. Second operand has 25 states, 25 states have (on average 6.64) internal successors, (166), 24 states have internal predecessors, (166), 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) [2024-12-02 13:16:07,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:16:07,821 INFO L93 Difference]: Finished difference Result 6371 states and 8620 transitions. [2024-12-02 13:16:07,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 13:16:07,821 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.64) internal successors, (166), 24 states have internal predecessors, (166), 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 62 [2024-12-02 13:16:07,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:16:07,829 INFO L225 Difference]: With dead ends: 6371 [2024-12-02 13:16:07,829 INFO L226 Difference]: Without dead ends: 5150 [2024-12-02 13:16:07,833 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=429, Invalid=1641, Unknown=0, NotChecked=0, Total=2070 [2024-12-02 13:16:07,833 INFO L435 NwaCegarLoop]: 1487 mSDtfsCounter, 18135 mSDsluCounter, 4853 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18135 SdHoareTripleChecker+Valid, 6340 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:16:07,833 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18135 Valid, 6340 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 13:16:07,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5150 states. [2024-12-02 13:16:07,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5150 to 5124. [2024-12-02 13:16:07,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5124 states, 5122 states have (on average 1.3580632565404138) internal successors, (6956), 5123 states have internal predecessors, (6956), 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) [2024-12-02 13:16:07,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5124 states to 5124 states and 6956 transitions. [2024-12-02 13:16:07,962 INFO L78 Accepts]: Start accepts. Automaton has 5124 states and 6956 transitions. Word has length 62 [2024-12-02 13:16:07,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:16:07,962 INFO L471 AbstractCegarLoop]: Abstraction has 5124 states and 6956 transitions. [2024-12-02 13:16:07,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.64) internal successors, (166), 24 states have internal predecessors, (166), 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) [2024-12-02 13:16:07,962 INFO L276 IsEmpty]: Start isEmpty. Operand 5124 states and 6956 transitions. [2024-12-02 13:16:07,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 13:16:07,963 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:16:07,963 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 13:16:07,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 13:16:08,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 13:16:08,164 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:16:08,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:08,164 INFO L85 PathProgramCache]: Analyzing trace with hash -679621431, now seen corresponding path program 1 times [2024-12-02 13:16:08,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:08,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108753595] [2024-12-02 13:16:08,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:08,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:08,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:08,833 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:08,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:16:08,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108753595] [2024-12-02 13:16:08,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108753595] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:16:08,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011626296] [2024-12-02 13:16:08,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:08,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:16:08,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:16:08,835 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:16:08,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 13:16:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:08,961 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-12-02 13:16:08,964 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:16:09,559 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:09,559 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:16:10,372 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:10,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011626296] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:16:10,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:16:10,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 30 [2024-12-02 13:16:10,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538142763] [2024-12-02 13:16:10,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:16:10,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-12-02 13:16:10,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:16:10,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-12-02 13:16:10,374 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2024-12-02 13:16:10,374 INFO L87 Difference]: Start difference. First operand 5124 states and 6956 transitions. Second operand has 30 states, 30 states have (on average 4.566666666666666) internal successors, (137), 30 states have internal predecessors, (137), 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) [2024-12-02 13:16:11,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:16:11,883 INFO L93 Difference]: Finished difference Result 11908 states and 15807 transitions. [2024-12-02 13:16:11,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-12-02 13:16:11,884 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.566666666666666) internal successors, (137), 30 states have internal predecessors, (137), 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 63 [2024-12-02 13:16:11,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:16:11,894 INFO L225 Difference]: With dead ends: 11908 [2024-12-02 13:16:11,894 INFO L226 Difference]: Without dead ends: 10404 [2024-12-02 13:16:11,897 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=548, Invalid=2104, Unknown=0, NotChecked=0, Total=2652 [2024-12-02 13:16:11,897 INFO L435 NwaCegarLoop]: 1499 mSDtfsCounter, 11683 mSDsluCounter, 13608 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11683 SdHoareTripleChecker+Valid, 15107 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 13:16:11,897 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11683 Valid, 15107 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 13:16:11,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10404 states. [2024-12-02 13:16:11,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10404 to 4691. [2024-12-02 13:16:11,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4691 states, 4689 states have (on average 1.3672424824056302) internal successors, (6411), 4690 states have internal predecessors, (6411), 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) [2024-12-02 13:16:12,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4691 states to 4691 states and 6411 transitions. [2024-12-02 13:16:12,002 INFO L78 Accepts]: Start accepts. Automaton has 4691 states and 6411 transitions. Word has length 63 [2024-12-02 13:16:12,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:16:12,002 INFO L471 AbstractCegarLoop]: Abstraction has 4691 states and 6411 transitions. [2024-12-02 13:16:12,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.566666666666666) internal successors, (137), 30 states have internal predecessors, (137), 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) [2024-12-02 13:16:12,003 INFO L276 IsEmpty]: Start isEmpty. Operand 4691 states and 6411 transitions. [2024-12-02 13:16:12,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 13:16:12,003 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:16:12,003 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 13:16:12,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 13:16:12,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:16:12,204 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:16:12,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:12,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1861102501, now seen corresponding path program 1 times [2024-12-02 13:16:12,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:12,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132794670] [2024-12-02 13:16:12,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:12,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:12,924 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:12,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:16:12,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132794670] [2024-12-02 13:16:12,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132794670] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:16:12,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66464175] [2024-12-02 13:16:12,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:12,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:16:12,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:16:12,926 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:16:12,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 13:16:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:13,043 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-12-02 13:16:13,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:16:14,951 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:14,951 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:16:17,786 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:17,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66464175] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:16:17,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:16:17,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 19, 18] total 46 [2024-12-02 13:16:17,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966931616] [2024-12-02 13:16:17,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:16:17,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-12-02 13:16:17,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:16:17,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-12-02 13:16:17,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=1791, Unknown=0, NotChecked=0, Total=2070 [2024-12-02 13:16:17,788 INFO L87 Difference]: Start difference. First operand 4691 states and 6411 transitions. Second operand has 46 states, 46 states have (on average 3.5652173913043477) internal successors, (164), 46 states have internal predecessors, (164), 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) [2024-12-02 13:16:30,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:16:30,618 INFO L93 Difference]: Finished difference Result 9442 states and 12394 transitions. [2024-12-02 13:16:30,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-12-02 13:16:30,619 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.5652173913043477) internal successors, (164), 46 states have internal predecessors, (164), 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 63 [2024-12-02 13:16:30,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:16:30,627 INFO L225 Difference]: With dead ends: 9442 [2024-12-02 13:16:30,627 INFO L226 Difference]: Without dead ends: 7086 [2024-12-02 13:16:30,632 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4079 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=2799, Invalid=11007, Unknown=0, NotChecked=0, Total=13806 [2024-12-02 13:16:30,633 INFO L435 NwaCegarLoop]: 1533 mSDtfsCounter, 17935 mSDsluCounter, 14790 mSDsCounter, 0 mSdLazyCounter, 2012 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17935 SdHoareTripleChecker+Valid, 16323 SdHoareTripleChecker+Invalid, 2095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 13:16:30,633 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17935 Valid, 16323 Invalid, 2095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2012 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 13:16:30,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7086 states. [2024-12-02 13:16:30,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7086 to 5864. [2024-12-02 13:16:30,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5864 states, 5862 states have (on average 1.34834527465029) internal successors, (7904), 5863 states have internal predecessors, (7904), 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) [2024-12-02 13:16:30,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5864 states to 5864 states and 7904 transitions. [2024-12-02 13:16:30,861 INFO L78 Accepts]: Start accepts. Automaton has 5864 states and 7904 transitions. Word has length 63 [2024-12-02 13:16:30,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:16:30,862 INFO L471 AbstractCegarLoop]: Abstraction has 5864 states and 7904 transitions. [2024-12-02 13:16:30,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.5652173913043477) internal successors, (164), 46 states have internal predecessors, (164), 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) [2024-12-02 13:16:30,862 INFO L276 IsEmpty]: Start isEmpty. Operand 5864 states and 7904 transitions. [2024-12-02 13:16:30,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-12-02 13:16:30,864 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:16:30,864 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 13:16:30,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 13:16:31,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:16:31,065 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:16:31,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:31,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1538386304, now seen corresponding path program 1 times [2024-12-02 13:16:31,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:31,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137011557] [2024-12-02 13:16:31,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:31,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:31,272 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:31,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:16:31,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137011557] [2024-12-02 13:16:31,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137011557] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:16:31,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:16:31,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 13:16:31,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058748247] [2024-12-02 13:16:31,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:16:31,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:16:31,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:16:31,273 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:16:31,273 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:16:31,273 INFO L87 Difference]: Start difference. First operand 5864 states and 7904 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 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) [2024-12-02 13:16:34,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:16:34,395 INFO L93 Difference]: Finished difference Result 8119 states and 11299 transitions. [2024-12-02 13:16:34,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 13:16:34,395 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 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 99 [2024-12-02 13:16:34,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:16:34,398 INFO L225 Difference]: With dead ends: 8119 [2024-12-02 13:16:34,398 INFO L226 Difference]: Without dead ends: 6615 [2024-12-02 13:16:34,399 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-12-02 13:16:34,400 INFO L435 NwaCegarLoop]: 761 mSDtfsCounter, 1716 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 3152 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1716 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 3373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 3152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-12-02 13:16:34,400 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1716 Valid, 1309 Invalid, 3373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 3152 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-12-02 13:16:34,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6615 states. [2024-12-02 13:16:34,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6615 to 6615. [2024-12-02 13:16:34,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6615 states, 6613 states have (on average 1.3096930288825042) internal successors, (8661), 6614 states have internal predecessors, (8661), 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) [2024-12-02 13:16:34,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6615 states to 6615 states and 8661 transitions. [2024-12-02 13:16:34,536 INFO L78 Accepts]: Start accepts. Automaton has 6615 states and 8661 transitions. Word has length 99 [2024-12-02 13:16:34,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:16:34,537 INFO L471 AbstractCegarLoop]: Abstraction has 6615 states and 8661 transitions. [2024-12-02 13:16:34,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 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) [2024-12-02 13:16:34,537 INFO L276 IsEmpty]: Start isEmpty. Operand 6615 states and 8661 transitions. [2024-12-02 13:16:34,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 13:16:34,539 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:16:34,539 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2024-12-02 13:16:34,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 13:16:34,539 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:16:34,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:34,540 INFO L85 PathProgramCache]: Analyzing trace with hash 268330733, now seen corresponding path program 1 times [2024-12-02 13:16:34,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:34,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967628408] [2024-12-02 13:16:34,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:34,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:35,339 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 30 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:35,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:16:35,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967628408] [2024-12-02 13:16:35,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967628408] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:16:35,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832500272] [2024-12-02 13:16:35,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:35,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:16:35,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:16:35,342 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:16:35,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 13:16:35,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:35,496 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-02 13:16:35,506 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:16:35,676 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 12 proven. 66 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 13:16:35,676 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:16:35,980 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 12 proven. 66 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 13:16:35,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832500272] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:16:35,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:16:35,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7, 5] total 23 [2024-12-02 13:16:35,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864767401] [2024-12-02 13:16:35,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:16:35,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 13:16:35,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:16:35,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 13:16:35,982 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2024-12-02 13:16:35,982 INFO L87 Difference]: Start difference. First operand 6615 states and 8661 transitions. Second operand has 23 states, 23 states have (on average 11.478260869565217) internal successors, (264), 23 states have internal predecessors, (264), 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) [2024-12-02 13:16:39,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:16:39,596 INFO L93 Difference]: Finished difference Result 16957 states and 21375 transitions. [2024-12-02 13:16:39,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-12-02 13:16:39,596 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 11.478260869565217) internal successors, (264), 23 states have internal predecessors, (264), 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 103 [2024-12-02 13:16:39,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:16:39,605 INFO L225 Difference]: With dead ends: 16957 [2024-12-02 13:16:39,605 INFO L226 Difference]: Without dead ends: 12854 [2024-12-02 13:16:39,609 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3467 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1454, Invalid=9052, Unknown=0, NotChecked=0, Total=10506 [2024-12-02 13:16:39,610 INFO L435 NwaCegarLoop]: 1574 mSDtfsCounter, 18387 mSDsluCounter, 11552 mSDsCounter, 0 mSdLazyCounter, 1912 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18387 SdHoareTripleChecker+Valid, 13126 SdHoareTripleChecker+Invalid, 1954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 13:16:39,610 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18387 Valid, 13126 Invalid, 1954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1912 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 13:16:39,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12854 states. [2024-12-02 13:16:39,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12854 to 10201. [2024-12-02 13:16:39,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10201 states, 10199 states have (on average 1.2562015883910187) internal successors, (12812), 10200 states have internal predecessors, (12812), 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) [2024-12-02 13:16:39,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10201 states to 10201 states and 12812 transitions. [2024-12-02 13:16:39,932 INFO L78 Accepts]: Start accepts. Automaton has 10201 states and 12812 transitions. Word has length 103 [2024-12-02 13:16:39,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:16:39,932 INFO L471 AbstractCegarLoop]: Abstraction has 10201 states and 12812 transitions. [2024-12-02 13:16:39,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.478260869565217) internal successors, (264), 23 states have internal predecessors, (264), 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) [2024-12-02 13:16:39,932 INFO L276 IsEmpty]: Start isEmpty. Operand 10201 states and 12812 transitions. [2024-12-02 13:16:39,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 13:16:39,933 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:16:39,933 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 13:16:39,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 13:16:40,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:16:40,134 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:16:40,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:40,134 INFO L85 PathProgramCache]: Analyzing trace with hash 159932591, now seen corresponding path program 1 times [2024-12-02 13:16:40,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:40,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539119506] [2024-12-02 13:16:40,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:40,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:40,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:41,241 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 33 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:41,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:16:41,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539119506] [2024-12-02 13:16:41,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539119506] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:16:41,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276843445] [2024-12-02 13:16:41,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:41,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:16:41,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:16:41,243 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:16:41,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 13:16:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:41,342 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 13:16:41,344 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:16:42,077 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 19 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:42,077 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:16:43,766 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 16 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:43,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276843445] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:16:43,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:16:43,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 11] total 38 [2024-12-02 13:16:43,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13541381] [2024-12-02 13:16:43,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:16:43,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-12-02 13:16:43,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:16:43,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-12-02 13:16:43,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1356, Unknown=0, NotChecked=0, Total=1482 [2024-12-02 13:16:43,769 INFO L87 Difference]: Start difference. First operand 10201 states and 12812 transitions. Second operand has 39 states, 39 states have (on average 7.512820512820513) internal successors, (293), 38 states have internal predecessors, (293), 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) [2024-12-02 13:16:52,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:16:52,255 INFO L93 Difference]: Finished difference Result 25680 states and 31646 transitions. [2024-12-02 13:16:52,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-12-02 13:16:52,256 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 7.512820512820513) internal successors, (293), 38 states have internal predecessors, (293), 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 103 [2024-12-02 13:16:52,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:16:52,272 INFO L225 Difference]: With dead ends: 25680 [2024-12-02 13:16:52,272 INFO L226 Difference]: Without dead ends: 20807 [2024-12-02 13:16:52,278 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6235 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=3517, Invalid=16789, Unknown=0, NotChecked=0, Total=20306 [2024-12-02 13:16:52,279 INFO L435 NwaCegarLoop]: 1605 mSDtfsCounter, 19298 mSDsluCounter, 27150 mSDsCounter, 0 mSdLazyCounter, 2485 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19298 SdHoareTripleChecker+Valid, 28755 SdHoareTripleChecker+Invalid, 2616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 2485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 13:16:52,279 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19298 Valid, 28755 Invalid, 2616 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [131 Valid, 2485 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 13:16:52,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20807 states. [2024-12-02 13:16:52,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20807 to 13791. [2024-12-02 13:16:52,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13791 states, 13789 states have (on average 1.2382333744288927) internal successors, (17074), 13790 states have internal predecessors, (17074), 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) [2024-12-02 13:16:52,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13791 states to 13791 states and 17074 transitions. [2024-12-02 13:16:52,824 INFO L78 Accepts]: Start accepts. Automaton has 13791 states and 17074 transitions. Word has length 103 [2024-12-02 13:16:52,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:16:52,824 INFO L471 AbstractCegarLoop]: Abstraction has 13791 states and 17074 transitions. [2024-12-02 13:16:52,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 7.512820512820513) internal successors, (293), 38 states have internal predecessors, (293), 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) [2024-12-02 13:16:52,824 INFO L276 IsEmpty]: Start isEmpty. Operand 13791 states and 17074 transitions. [2024-12-02 13:16:52,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 13:16:52,826 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:16:52,826 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 13:16:52,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 13:16:53,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:16:53,026 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:16:53,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:53,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1648355578, now seen corresponding path program 1 times [2024-12-02 13:16:53,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:53,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195127782] [2024-12-02 13:16:53,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:53,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:53,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:54,343 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 59 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-12-02 13:16:54,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:16:54,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195127782] [2024-12-02 13:16:54,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195127782] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:16:54,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587790567] [2024-12-02 13:16:54,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:54,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:16:54,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:16:54,345 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:16:54,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 13:16:54,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:54,448 INFO L256 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-12-02 13:16:54,450 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:16:56,600 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 16 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:16:56,600 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:17:00,511 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 16 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:17:00,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587790567] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:17:00,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:17:00,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 23, 22] total 60 [2024-12-02 13:17:00,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847567917] [2024-12-02 13:17:00,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:17:00,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-12-02 13:17:00,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:17:00,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-12-02 13:17:00,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=3185, Unknown=0, NotChecked=0, Total=3540 [2024-12-02 13:17:00,514 INFO L87 Difference]: Start difference. First operand 13791 states and 17074 transitions. Second operand has 60 states, 60 states have (on average 4.683333333333334) internal successors, (281), 60 states have internal predecessors, (281), 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) [2024-12-02 13:17:36,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:17:36,245 INFO L93 Difference]: Finished difference Result 23058 states and 28244 transitions. [2024-12-02 13:17:36,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2024-12-02 13:17:36,245 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.683333333333334) internal successors, (281), 60 states have internal predecessors, (281), 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 104 [2024-12-02 13:17:36,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:17:36,276 INFO L225 Difference]: With dead ends: 23058 [2024-12-02 13:17:36,276 INFO L226 Difference]: Without dead ends: 18950 [2024-12-02 13:17:36,284 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14376 ImplicationChecksByTransitivity, 34.1s TimeCoverageRelationStatistics Valid=6621, Invalid=39819, Unknown=0, NotChecked=0, Total=46440 [2024-12-02 13:17:36,285 INFO L435 NwaCegarLoop]: 1643 mSDtfsCounter, 34920 mSDsluCounter, 28847 mSDsCounter, 0 mSdLazyCounter, 3145 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34920 SdHoareTripleChecker+Valid, 30490 SdHoareTripleChecker+Invalid, 3289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 3145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-12-02 13:17:36,285 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34920 Valid, 30490 Invalid, 3289 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [144 Valid, 3145 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-12-02 13:17:36,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18950 states. [2024-12-02 13:17:37,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18950 to 18037. [2024-12-02 13:17:37,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18037 states, 18035 states have (on average 1.228278347657333) internal successors, (22152), 18036 states have internal predecessors, (22152), 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) [2024-12-02 13:17:37,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18037 states to 18037 states and 22152 transitions. [2024-12-02 13:17:37,204 INFO L78 Accepts]: Start accepts. Automaton has 18037 states and 22152 transitions. Word has length 104 [2024-12-02 13:17:37,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:17:37,204 INFO L471 AbstractCegarLoop]: Abstraction has 18037 states and 22152 transitions. [2024-12-02 13:17:37,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.683333333333334) internal successors, (281), 60 states have internal predecessors, (281), 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) [2024-12-02 13:17:37,205 INFO L276 IsEmpty]: Start isEmpty. Operand 18037 states and 22152 transitions. [2024-12-02 13:17:37,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 13:17:37,206 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:17:37,207 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 13:17:37,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 13:17:37,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:17:37,407 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:17:37,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:17:37,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1812137019, now seen corresponding path program 1 times [2024-12-02 13:17:37,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:17:37,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528951156] [2024-12-02 13:17:37,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:17:37,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:17:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:17:39,316 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 25 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:17:39,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:17:39,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528951156] [2024-12-02 13:17:39,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528951156] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:17:39,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052472020] [2024-12-02 13:17:39,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:17:39,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:17:39,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:17:39,318 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:17:39,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 13:17:39,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:17:39,437 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 13:17:39,438 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:17:40,735 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 21 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:17:40,736 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:17:42,306 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 17 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:17:42,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052472020] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:17:42,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:17:42,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 16, 14] total 52 [2024-12-02 13:17:42,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568551518] [2024-12-02 13:17:42,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:17:42,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-12-02 13:17:42,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:17:42,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-12-02 13:17:42,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=2470, Unknown=0, NotChecked=0, Total=2652 [2024-12-02 13:17:42,308 INFO L87 Difference]: Start difference. First operand 18037 states and 22152 transitions. Second operand has 52 states, 52 states have (on average 5.711538461538462) internal successors, (297), 52 states have internal predecessors, (297), 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) [2024-12-02 13:18:05,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:18:05,247 INFO L93 Difference]: Finished difference Result 36525 states and 44360 transitions. [2024-12-02 13:18:05,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2024-12-02 13:18:05,247 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.711538461538462) internal successors, (297), 52 states have internal predecessors, (297), 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 105 [2024-12-02 13:18:05,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:18:05,274 INFO L225 Difference]: With dead ends: 36525 [2024-12-02 13:18:05,274 INFO L226 Difference]: Without dead ends: 26023 [2024-12-02 13:18:05,283 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 184 SyntacticMatches, 1 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14627 ImplicationChecksByTransitivity, 20.0s TimeCoverageRelationStatistics Valid=6723, Invalid=38859, Unknown=0, NotChecked=0, Total=45582 [2024-12-02 13:18:05,284 INFO L435 NwaCegarLoop]: 1685 mSDtfsCounter, 20769 mSDsluCounter, 33214 mSDsCounter, 0 mSdLazyCounter, 4311 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20769 SdHoareTripleChecker+Valid, 34899 SdHoareTripleChecker+Invalid, 4501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 4311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-12-02 13:18:05,284 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20769 Valid, 34899 Invalid, 4501 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [190 Valid, 4311 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-12-02 13:18:05,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26023 states. [2024-12-02 13:18:06,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26023 to 21137. [2024-12-02 13:18:06,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21137 states, 21135 states have (on average 1.2229004021764844) internal successors, (25846), 21136 states have internal predecessors, (25846), 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) [2024-12-02 13:18:06,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21137 states to 21137 states and 25846 transitions. [2024-12-02 13:18:06,514 INFO L78 Accepts]: Start accepts. Automaton has 21137 states and 25846 transitions. Word has length 105 [2024-12-02 13:18:06,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:18:06,515 INFO L471 AbstractCegarLoop]: Abstraction has 21137 states and 25846 transitions. [2024-12-02 13:18:06,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.711538461538462) internal successors, (297), 52 states have internal predecessors, (297), 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) [2024-12-02 13:18:06,515 INFO L276 IsEmpty]: Start isEmpty. Operand 21137 states and 25846 transitions. [2024-12-02 13:18:06,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 13:18:06,516 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:18:06,517 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 13:18:06,522 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 13:18:06,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:18:06,717 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:18:06,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:18:06,717 INFO L85 PathProgramCache]: Analyzing trace with hash -867694025, now seen corresponding path program 1 times [2024-12-02 13:18:06,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:18:06,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249422893] [2024-12-02 13:18:06,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:18:06,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:18:06,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:18:07,613 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:18:07,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:18:07,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249422893] [2024-12-02 13:18:07,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249422893] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:18:07,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046137998] [2024-12-02 13:18:07,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:18:07,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:18:07,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:18:07,615 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:18:07,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 13:18:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:18:07,719 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-12-02 13:18:07,721 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:18:10,573 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:18:10,574 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:18:13,479 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:18:13,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046137998] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:18:13,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:18:13,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 18] total 52 [2024-12-02 13:18:13,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484152689] [2024-12-02 13:18:13,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:18:13,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-12-02 13:18:13,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:18:13,481 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-12-02 13:18:13,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=2369, Unknown=0, NotChecked=0, Total=2652 [2024-12-02 13:18:13,481 INFO L87 Difference]: Start difference. First operand 21137 states and 25846 transitions. Second operand has 52 states, 52 states have (on average 5.730769230769231) internal successors, (298), 52 states have internal predecessors, (298), 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) [2024-12-02 13:18:21,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:18:21,534 INFO L93 Difference]: Finished difference Result 34085 states and 41519 transitions. [2024-12-02 13:18:21,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-12-02 13:18:21,535 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.730769230769231) internal successors, (298), 52 states have internal predecessors, (298), 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 105 [2024-12-02 13:18:21,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:18:21,550 INFO L225 Difference]: With dead ends: 34085 [2024-12-02 13:18:21,551 INFO L226 Difference]: Without dead ends: 22688 [2024-12-02 13:18:21,558 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2442 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=1719, Invalid=7787, Unknown=0, NotChecked=0, Total=9506 [2024-12-02 13:18:21,558 INFO L435 NwaCegarLoop]: 1583 mSDtfsCounter, 18426 mSDsluCounter, 33083 mSDsCounter, 0 mSdLazyCounter, 2265 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18426 SdHoareTripleChecker+Valid, 34666 SdHoareTripleChecker+Invalid, 2330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:18:21,559 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18426 Valid, 34666 Invalid, 2330 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 2265 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-12-02 13:18:21,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22688 states. [2024-12-02 13:18:22,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22688 to 19991. [2024-12-02 13:18:22,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19991 states, 19989 states have (on average 1.2179198559207565) internal successors, (24345), 19990 states have internal predecessors, (24345), 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) [2024-12-02 13:18:22,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19991 states to 19991 states and 24345 transitions. [2024-12-02 13:18:22,796 INFO L78 Accepts]: Start accepts. Automaton has 19991 states and 24345 transitions. Word has length 105 [2024-12-02 13:18:22,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:18:22,796 INFO L471 AbstractCegarLoop]: Abstraction has 19991 states and 24345 transitions. [2024-12-02 13:18:22,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.730769230769231) internal successors, (298), 52 states have internal predecessors, (298), 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) [2024-12-02 13:18:22,797 INFO L276 IsEmpty]: Start isEmpty. Operand 19991 states and 24345 transitions. [2024-12-02 13:18:22,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-12-02 13:18:22,798 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:18:22,798 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-12-02 13:18:22,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 13:18:22,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-02 13:18:22,998 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:18:22,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:18:22,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1706401868, now seen corresponding path program 1 times [2024-12-02 13:18:22,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:18:22,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74227503] [2024-12-02 13:18:22,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:18:22,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:18:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:18:24,163 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 40 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:18:24,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:18:24,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74227503] [2024-12-02 13:18:24,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74227503] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:18:24,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461022994] [2024-12-02 13:18:24,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:18:24,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:18:24,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:18:24,165 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:18:24,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 13:18:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:18:24,265 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-12-02 13:18:24,267 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:18:26,519 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 40 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:18:26,519 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:18:30,862 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 40 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:18:30,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461022994] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:18:30,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:18:30,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 21, 19] total 61 [2024-12-02 13:18:30,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841428415] [2024-12-02 13:18:30,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:18:30,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-12-02 13:18:30,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:18:30,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-12-02 13:18:30,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=3378, Unknown=0, NotChecked=0, Total=3660 [2024-12-02 13:18:30,864 INFO L87 Difference]: Start difference. First operand 19991 states and 24345 transitions. Second operand has 61 states, 61 states have (on average 4.540983606557377) internal successors, (277), 61 states have internal predecessors, (277), 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) [2024-12-02 13:18:51,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:18:51,552 INFO L93 Difference]: Finished difference Result 41260 states and 49867 transitions. [2024-12-02 13:18:51,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2024-12-02 13:18:51,553 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.540983606557377) internal successors, (277), 61 states have internal predecessors, (277), 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 106 [2024-12-02 13:18:51,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:18:51,577 INFO L225 Difference]: With dead ends: 41260 [2024-12-02 13:18:51,577 INFO L226 Difference]: Without dead ends: 36805 [2024-12-02 13:18:51,583 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 176 SyntacticMatches, 2 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10235 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=5074, Invalid=28598, Unknown=0, NotChecked=0, Total=33672 [2024-12-02 13:18:51,584 INFO L435 NwaCegarLoop]: 1626 mSDtfsCounter, 27470 mSDsluCounter, 33918 mSDsCounter, 0 mSdLazyCounter, 3908 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27470 SdHoareTripleChecker+Valid, 35544 SdHoareTripleChecker+Invalid, 4019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 3908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:18:51,584 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27470 Valid, 35544 Invalid, 4019 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [111 Valid, 3908 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-12-02 13:18:51,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36805 states. [2024-12-02 13:18:53,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36805 to 22361. [2024-12-02 13:18:53,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22361 states, 22359 states have (on average 1.2140972315398721) internal successors, (27146), 22360 states have internal predecessors, (27146), 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) [2024-12-02 13:18:53,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22361 states to 22361 states and 27146 transitions. [2024-12-02 13:18:53,206 INFO L78 Accepts]: Start accepts. Automaton has 22361 states and 27146 transitions. Word has length 106 [2024-12-02 13:18:53,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:18:53,206 INFO L471 AbstractCegarLoop]: Abstraction has 22361 states and 27146 transitions. [2024-12-02 13:18:53,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.540983606557377) internal successors, (277), 61 states have internal predecessors, (277), 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) [2024-12-02 13:18:53,206 INFO L276 IsEmpty]: Start isEmpty. Operand 22361 states and 27146 transitions. [2024-12-02 13:18:53,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 13:18:53,207 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:18:53,207 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-12-02 13:18:53,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 13:18:53,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 13:18:53,408 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:18:53,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:18:53,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1230557169, now seen corresponding path program 1 times [2024-12-02 13:18:53,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:18:53,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664423798] [2024-12-02 13:18:53,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:18:53,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:18:53,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:18:54,034 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 32 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:18:54,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:18:54,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664423798] [2024-12-02 13:18:54,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664423798] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:18:54,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839636487] [2024-12-02 13:18:54,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:18:54,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:18:54,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:18:54,036 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:18:54,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 13:18:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:18:54,154 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-12-02 13:18:54,156 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:18:56,387 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 32 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:18:56,388 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:19:02,192 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 32 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:19:02,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839636487] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:19:02,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:19:02,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 25, 23] total 64 [2024-12-02 13:19:02,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150566963] [2024-12-02 13:19:02,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:19:02,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-12-02 13:19:02,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:19:02,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-12-02 13:19:02,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=3613, Unknown=0, NotChecked=0, Total=4032 [2024-12-02 13:19:02,193 INFO L87 Difference]: Start difference. First operand 22361 states and 27146 transitions. Second operand has 64 states, 64 states have (on average 4.53125) internal successors, (290), 64 states have internal predecessors, (290), 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) [2024-12-02 13:19:27,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:19:27,058 INFO L93 Difference]: Finished difference Result 46849 states and 57051 transitions. [2024-12-02 13:19:27,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2024-12-02 13:19:27,059 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.53125) internal successors, (290), 64 states have internal predecessors, (290), 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 107 [2024-12-02 13:19:27,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:19:27,084 INFO L225 Difference]: With dead ends: 46849 [2024-12-02 13:19:27,084 INFO L226 Difference]: Without dead ends: 38309 [2024-12-02 13:19:27,092 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8854 ImplicationChecksByTransitivity, 22.2s TimeCoverageRelationStatistics Valid=4930, Invalid=24140, Unknown=0, NotChecked=0, Total=29070 [2024-12-02 13:19:27,092 INFO L435 NwaCegarLoop]: 1580 mSDtfsCounter, 30423 mSDsluCounter, 34559 mSDsCounter, 0 mSdLazyCounter, 2591 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30423 SdHoareTripleChecker+Valid, 36139 SdHoareTripleChecker+Invalid, 2746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 2591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:19:27,092 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30423 Valid, 36139 Invalid, 2746 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [155 Valid, 2591 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-12-02 13:19:27,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38309 states. [2024-12-02 13:19:29,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38309 to 30081. [2024-12-02 13:19:29,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30081 states, 30079 states have (on average 1.2160311180557863) internal successors, (36577), 30080 states have internal predecessors, (36577), 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) [2024-12-02 13:19:29,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30081 states to 30081 states and 36577 transitions. [2024-12-02 13:19:29,714 INFO L78 Accepts]: Start accepts. Automaton has 30081 states and 36577 transitions. Word has length 107 [2024-12-02 13:19:29,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:19:29,714 INFO L471 AbstractCegarLoop]: Abstraction has 30081 states and 36577 transitions. [2024-12-02 13:19:29,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.53125) internal successors, (290), 64 states have internal predecessors, (290), 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) [2024-12-02 13:19:29,714 INFO L276 IsEmpty]: Start isEmpty. Operand 30081 states and 36577 transitions. [2024-12-02 13:19:29,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 13:19:29,716 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:19:29,716 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-12-02 13:19:29,721 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 13:19:29,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 13:19:29,916 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:19:29,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:19:29,916 INFO L85 PathProgramCache]: Analyzing trace with hash -667025751, now seen corresponding path program 1 times [2024-12-02 13:19:29,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:19:29,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032433268] [2024-12-02 13:19:29,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:19:29,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:19:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:19:30,895 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 22 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:19:30,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:19:30,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032433268] [2024-12-02 13:19:30,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032433268] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:19:30,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438101142] [2024-12-02 13:19:30,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:19:30,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:19:30,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:19:30,897 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:19:30,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 13:19:30,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:19:30,994 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 13:19:30,996 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:19:32,740 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 27 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:19:32,740 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:19:34,478 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 23 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:19:34,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438101142] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:19:34,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:19:34,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 17, 16] total 51 [2024-12-02 13:19:34,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094483362] [2024-12-02 13:19:34,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:19:34,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-12-02 13:19:34,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:19:34,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-12-02 13:19:34,480 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=2319, Unknown=0, NotChecked=0, Total=2550 [2024-12-02 13:19:34,480 INFO L87 Difference]: Start difference. First operand 30081 states and 36577 transitions. Second operand has 51 states, 51 states have (on average 5.823529411764706) internal successors, (297), 51 states have internal predecessors, (297), 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) [2024-12-02 13:19:47,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:19:47,289 INFO L93 Difference]: Finished difference Result 95632 states and 116340 transitions. [2024-12-02 13:19:47,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-12-02 13:19:47,290 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 5.823529411764706) internal successors, (297), 51 states have internal predecessors, (297), 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 107 [2024-12-02 13:19:47,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:19:47,343 INFO L225 Difference]: With dead ends: 95632 [2024-12-02 13:19:47,343 INFO L226 Difference]: Without dead ends: 71221 [2024-12-02 13:19:47,358 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 186 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4636 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=3615, Invalid=13415, Unknown=0, NotChecked=0, Total=17030 [2024-12-02 13:19:47,358 INFO L435 NwaCegarLoop]: 1551 mSDtfsCounter, 27788 mSDsluCounter, 23221 mSDsCounter, 0 mSdLazyCounter, 2804 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27788 SdHoareTripleChecker+Valid, 24772 SdHoareTripleChecker+Invalid, 2909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 13:19:47,358 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27788 Valid, 24772 Invalid, 2909 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [105 Valid, 2804 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 13:19:47,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71221 states. [2024-12-02 13:19:50,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71221 to 40993. [2024-12-02 13:19:51,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40993 states, 40991 states have (on average 1.2140713815227733) internal successors, (49766), 40992 states have internal predecessors, (49766), 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) [2024-12-02 13:19:51,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40993 states to 40993 states and 49766 transitions. [2024-12-02 13:19:51,040 INFO L78 Accepts]: Start accepts. Automaton has 40993 states and 49766 transitions. Word has length 107 [2024-12-02 13:19:51,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:19:51,041 INFO L471 AbstractCegarLoop]: Abstraction has 40993 states and 49766 transitions. [2024-12-02 13:19:51,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 5.823529411764706) internal successors, (297), 51 states have internal predecessors, (297), 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) [2024-12-02 13:19:51,041 INFO L276 IsEmpty]: Start isEmpty. Operand 40993 states and 49766 transitions. [2024-12-02 13:19:51,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 13:19:51,042 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:19:51,042 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-12-02 13:19:51,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 13:19:51,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 13:19:51,242 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:19:51,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:19:51,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1782264045, now seen corresponding path program 1 times [2024-12-02 13:19:51,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:19:51,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668549267] [2024-12-02 13:19:51,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:19:51,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:19:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:19:51,664 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 45 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:19:51,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:19:51,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668549267] [2024-12-02 13:19:51,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668549267] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:19:51,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326829166] [2024-12-02 13:19:51,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:19:51,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:19:51,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:19:51,666 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:19:51,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 13:19:51,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:19:51,769 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 13:19:51,770 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:19:52,637 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 52 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:19:52,637 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:19:54,182 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 42 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:19:54,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326829166] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:19:54,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:19:54,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 12] total 35 [2024-12-02 13:19:54,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948235313] [2024-12-02 13:19:54,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:19:54,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-12-02 13:19:54,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:19:54,183 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-12-02 13:19:54,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1043, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 13:19:54,183 INFO L87 Difference]: Start difference. First operand 40993 states and 49766 transitions. Second operand has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 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) [2024-12-02 13:20:01,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:20:01,071 INFO L93 Difference]: Finished difference Result 102217 states and 123406 transitions. [2024-12-02 13:20:01,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 13:20:01,072 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 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 107 [2024-12-02 13:20:01,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:20:01,125 INFO L225 Difference]: With dead ends: 102217 [2024-12-02 13:20:01,125 INFO L226 Difference]: Without dead ends: 69746 [2024-12-02 13:20:01,146 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=868, Invalid=3164, Unknown=0, NotChecked=0, Total=4032 [2024-12-02 13:20:01,146 INFO L435 NwaCegarLoop]: 1572 mSDtfsCounter, 21473 mSDsluCounter, 14135 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21473 SdHoareTripleChecker+Valid, 15707 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 13:20:01,147 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21473 Valid, 15707 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 13:20:01,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69746 states. [2024-12-02 13:20:05,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69746 to 40063. [2024-12-02 13:20:05,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40063 states, 40061 states have (on average 1.2063603005416739) internal successors, (48328), 40062 states have internal predecessors, (48328), 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) [2024-12-02 13:20:05,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40063 states to 40063 states and 48328 transitions. [2024-12-02 13:20:05,317 INFO L78 Accepts]: Start accepts. Automaton has 40063 states and 48328 transitions. Word has length 107 [2024-12-02 13:20:05,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:20:05,317 INFO L471 AbstractCegarLoop]: Abstraction has 40063 states and 48328 transitions. [2024-12-02 13:20:05,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 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) [2024-12-02 13:20:05,318 INFO L276 IsEmpty]: Start isEmpty. Operand 40063 states and 48328 transitions. [2024-12-02 13:20:05,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 13:20:05,318 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:20:05,319 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-12-02 13:20:05,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 13:20:05,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:20:05,519 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:20:05,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:20:05,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1616506483, now seen corresponding path program 1 times [2024-12-02 13:20:05,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:20:05,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900588146] [2024-12-02 13:20:05,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:20:05,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:20:05,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:20:05,932 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 31 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:20:05,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:20:05,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900588146] [2024-12-02 13:20:05,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900588146] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:20:05,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230607125] [2024-12-02 13:20:05,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:20:05,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:20:05,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:20:05,934 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:20:05,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 13:20:06,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:20:06,040 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 13:20:06,041 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:20:06,942 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 34 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:20:06,943 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:20:08,303 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 34 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:20:08,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230607125] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:20:08,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:20:08,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 12] total 35 [2024-12-02 13:20:08,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034128820] [2024-12-02 13:20:08,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:20:08,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-12-02 13:20:08,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:20:08,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-12-02 13:20:08,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1059, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 13:20:08,305 INFO L87 Difference]: Start difference. First operand 40063 states and 48328 transitions. Second operand has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 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) [2024-12-02 13:20:16,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:20:16,107 INFO L93 Difference]: Finished difference Result 90523 states and 108769 transitions. [2024-12-02 13:20:16,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-12-02 13:20:16,108 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 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 107 [2024-12-02 13:20:16,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:20:16,169 INFO L225 Difference]: With dead ends: 90523 [2024-12-02 13:20:16,169 INFO L226 Difference]: Without dead ends: 55808 [2024-12-02 13:20:16,186 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 193 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1317 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1412, Invalid=5068, Unknown=0, NotChecked=0, Total=6480 [2024-12-02 13:20:16,187 INFO L435 NwaCegarLoop]: 1561 mSDtfsCounter, 24684 mSDsluCounter, 16045 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24684 SdHoareTripleChecker+Valid, 17606 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 13:20:16,187 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24684 Valid, 17606 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 13:20:16,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55808 states. [2024-12-02 13:20:19,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55808 to 36391. [2024-12-02 13:20:19,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36391 states, 36389 states have (on average 1.2096512682404024) internal successors, (44018), 36390 states have internal predecessors, (44018), 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) [2024-12-02 13:20:19,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36391 states to 36391 states and 44018 transitions. [2024-12-02 13:20:19,553 INFO L78 Accepts]: Start accepts. Automaton has 36391 states and 44018 transitions. Word has length 107 [2024-12-02 13:20:19,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:20:19,553 INFO L471 AbstractCegarLoop]: Abstraction has 36391 states and 44018 transitions. [2024-12-02 13:20:19,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.628571428571429) internal successors, (267), 35 states have internal predecessors, (267), 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) [2024-12-02 13:20:19,553 INFO L276 IsEmpty]: Start isEmpty. Operand 36391 states and 44018 transitions. [2024-12-02 13:20:19,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 13:20:19,554 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:20:19,554 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-12-02 13:20:19,563 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 13:20:19,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-12-02 13:20:19,754 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:20:19,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:20:19,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1360617744, now seen corresponding path program 1 times [2024-12-02 13:20:19,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:20:19,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375860499] [2024-12-02 13:20:19,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:20:19,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:20:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:20:21,055 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 32 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:20:21,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:20:21,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375860499] [2024-12-02 13:20:21,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375860499] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:20:21,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213940430] [2024-12-02 13:20:21,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:20:21,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:20:21,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:20:21,057 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:20:21,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 13:20:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:20:21,170 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-12-02 13:20:21,172 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:20:23,887 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 32 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:20:23,887 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:20:30,653 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 32 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:20:30,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213940430] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:20:30,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:20:30,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24, 25] total 66 [2024-12-02 13:20:30,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171948248] [2024-12-02 13:20:30,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:20:30,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-12-02 13:20:30,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:20:30,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-12-02 13:20:30,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=3981, Unknown=0, NotChecked=0, Total=4290 [2024-12-02 13:20:30,654 INFO L87 Difference]: Start difference. First operand 36391 states and 44018 transitions. Second operand has 66 states, 66 states have (on average 4.151515151515151) internal successors, (274), 66 states have internal predecessors, (274), 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) [2024-12-02 13:23:26,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:23:26,483 INFO L93 Difference]: Finished difference Result 156945 states and 188340 transitions. [2024-12-02 13:23:26,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 383 states. [2024-12-02 13:23:26,484 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 4.151515151515151) internal successors, (274), 66 states have internal predecessors, (274), 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 108 [2024-12-02 13:23:26,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:23:26,599 INFO L225 Difference]: With dead ends: 156945 [2024-12-02 13:23:26,599 INFO L226 Difference]: Without dead ends: 145618 [2024-12-02 13:23:26,620 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 619 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 445 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90463 ImplicationChecksByTransitivity, 151.5s TimeCoverageRelationStatistics Valid=34766, Invalid=164596, Unknown=0, NotChecked=0, Total=199362 [2024-12-02 13:23:26,621 INFO L435 NwaCegarLoop]: 1708 mSDtfsCounter, 32928 mSDsluCounter, 44016 mSDsCounter, 0 mSdLazyCounter, 9247 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32928 SdHoareTripleChecker+Valid, 45724 SdHoareTripleChecker+Invalid, 9555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 9247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2024-12-02 13:23:26,621 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32928 Valid, 45724 Invalid, 9555 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [308 Valid, 9247 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2024-12-02 13:23:26,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145618 states. [2024-12-02 13:23:31,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145618 to 36776. [2024-12-02 13:23:31,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36776 states, 36774 states have (on average 1.209985315712188) internal successors, (44496), 36775 states have internal predecessors, (44496), 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) [2024-12-02 13:23:31,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36776 states to 36776 states and 44496 transitions. [2024-12-02 13:23:31,192 INFO L78 Accepts]: Start accepts. Automaton has 36776 states and 44496 transitions. Word has length 108 [2024-12-02 13:23:31,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:23:31,192 INFO L471 AbstractCegarLoop]: Abstraction has 36776 states and 44496 transitions. [2024-12-02 13:23:31,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 4.151515151515151) internal successors, (274), 66 states have internal predecessors, (274), 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) [2024-12-02 13:23:31,192 INFO L276 IsEmpty]: Start isEmpty. Operand 36776 states and 44496 transitions. [2024-12-02 13:23:31,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 13:23:31,193 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:23:31,193 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-12-02 13:23:31,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-12-02 13:23:31,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-12-02 13:23:31,394 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:23:31,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:23:31,394 INFO L85 PathProgramCache]: Analyzing trace with hash -516880752, now seen corresponding path program 1 times [2024-12-02 13:23:31,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:23:31,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506850138] [2024-12-02 13:23:31,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:23:31,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:23:31,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:23:33,386 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 22 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:23:33,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:23:33,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506850138] [2024-12-02 13:23:33,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506850138] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:23:33,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265984390] [2024-12-02 13:23:33,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:23:33,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:23:33,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:23:33,388 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:23:33,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 13:23:33,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:23:33,508 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-12-02 13:23:33,510 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:23:36,590 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 23 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:23:36,590 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:23:40,723 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 22 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:23:40,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265984390] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:23:40,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:23:40,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 23, 22] total 69 [2024-12-02 13:23:40,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857650341] [2024-12-02 13:23:40,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:23:40,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-12-02 13:23:40,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:23:40,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-12-02 13:23:40,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=4295, Unknown=0, NotChecked=0, Total=4692 [2024-12-02 13:23:40,725 INFO L87 Difference]: Start difference. First operand 36776 states and 44496 transitions. Second operand has 69 states, 69 states have (on average 4.260869565217392) internal successors, (294), 69 states have internal predecessors, (294), 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) [2024-12-02 13:25:50,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:25:50,432 INFO L93 Difference]: Finished difference Result 76383 states and 91841 transitions. [2024-12-02 13:25:50,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 364 states. [2024-12-02 13:25:50,433 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 4.260869565217392) internal successors, (294), 69 states have internal predecessors, (294), 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 108 [2024-12-02 13:25:50,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:25:50,474 INFO L225 Difference]: With dead ends: 76383 [2024-12-02 13:25:50,474 INFO L226 Difference]: Without dead ends: 57597 [2024-12-02 13:25:50,488 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 428 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76929 ImplicationChecksByTransitivity, 119.1s TimeCoverageRelationStatistics Valid=25310, Invalid=159160, Unknown=0, NotChecked=0, Total=184470 [2024-12-02 13:25:50,488 INFO L435 NwaCegarLoop]: 1601 mSDtfsCounter, 26998 mSDsluCounter, 45094 mSDsCounter, 0 mSdLazyCounter, 6060 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26998 SdHoareTripleChecker+Valid, 46695 SdHoareTripleChecker+Invalid, 6435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 6060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2024-12-02 13:25:50,488 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26998 Valid, 46695 Invalid, 6435 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [375 Valid, 6060 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2024-12-02 13:25:50,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57597 states. [2024-12-02 13:25:55,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57597 to 39770. [2024-12-02 13:25:55,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39770 states, 39768 states have (on average 1.2085093542546772) internal successors, (48060), 39769 states have internal predecessors, (48060), 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) [2024-12-02 13:25:55,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39770 states to 39770 states and 48060 transitions. [2024-12-02 13:25:55,304 INFO L78 Accepts]: Start accepts. Automaton has 39770 states and 48060 transitions. Word has length 108 [2024-12-02 13:25:55,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:25:55,304 INFO L471 AbstractCegarLoop]: Abstraction has 39770 states and 48060 transitions. [2024-12-02 13:25:55,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 4.260869565217392) internal successors, (294), 69 states have internal predecessors, (294), 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) [2024-12-02 13:25:55,304 INFO L276 IsEmpty]: Start isEmpty. Operand 39770 states and 48060 transitions. [2024-12-02 13:25:55,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 13:25:55,305 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:25:55,305 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-12-02 13:25:55,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-12-02 13:25:55,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-12-02 13:25:55,505 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:25:55,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:25:55,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1776170548, now seen corresponding path program 1 times [2024-12-02 13:25:55,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:25:55,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183018273] [2024-12-02 13:25:55,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:25:55,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:25:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:25:57,000 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 41 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:25:57,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:25:57,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183018273] [2024-12-02 13:25:57,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183018273] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:25:57,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508005798] [2024-12-02 13:25:57,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:25:57,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:25:57,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:25:57,002 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:25:57,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 13:25:57,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:25:57,133 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-12-02 13:25:57,134 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:26:02,161 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 41 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:26:02,161 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:26:08,980 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 41 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:26:08,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508005798] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:26:08,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:26:08,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 24] total 71 [2024-12-02 13:26:08,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497178667] [2024-12-02 13:26:08,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:26:08,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-12-02 13:26:08,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:26:08,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-12-02 13:26:08,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=4620, Unknown=0, NotChecked=0, Total=4970 [2024-12-02 13:26:08,981 INFO L87 Difference]: Start difference. First operand 39770 states and 48060 transitions. Second operand has 71 states, 71 states have (on average 3.788732394366197) internal successors, (269), 71 states have internal predecessors, (269), 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) [2024-12-02 13:28:08,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:28:08,752 INFO L93 Difference]: Finished difference Result 81301 states and 97659 transitions. [2024-12-02 13:28:08,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 289 states. [2024-12-02 13:28:08,753 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 3.788732394366197) internal successors, (269), 71 states have internal predecessors, (269), 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 108 [2024-12-02 13:28:08,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:28:08,801 INFO L225 Difference]: With dead ends: 81301 [2024-12-02 13:28:08,801 INFO L226 Difference]: Without dead ends: 65670 [2024-12-02 13:28:08,813 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 356 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53007 ImplicationChecksByTransitivity, 107.8s TimeCoverageRelationStatistics Valid=21487, Invalid=106319, Unknown=0, NotChecked=0, Total=127806 [2024-12-02 13:28:08,814 INFO L435 NwaCegarLoop]: 1673 mSDtfsCounter, 32209 mSDsluCounter, 37138 mSDsCounter, 0 mSdLazyCounter, 6549 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32209 SdHoareTripleChecker+Valid, 38811 SdHoareTripleChecker+Invalid, 6843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 6549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:28:08,814 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32209 Valid, 38811 Invalid, 6843 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [294 Valid, 6549 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2024-12-02 13:28:08,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65670 states. [2024-12-02 13:28:14,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65670 to 39782. [2024-12-02 13:28:14,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39782 states, 39780 states have (on average 1.208974358974359) internal successors, (48093), 39781 states have internal predecessors, (48093), 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) [2024-12-02 13:28:14,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39782 states to 39782 states and 48093 transitions. [2024-12-02 13:28:14,060 INFO L78 Accepts]: Start accepts. Automaton has 39782 states and 48093 transitions. Word has length 108 [2024-12-02 13:28:14,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:28:14,061 INFO L471 AbstractCegarLoop]: Abstraction has 39782 states and 48093 transitions. [2024-12-02 13:28:14,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 3.788732394366197) internal successors, (269), 71 states have internal predecessors, (269), 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) [2024-12-02 13:28:14,061 INFO L276 IsEmpty]: Start isEmpty. Operand 39782 states and 48093 transitions. [2024-12-02 13:28:14,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 13:28:14,063 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:28:14,063 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:28:14,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-12-02 13:28:14,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-12-02 13:28:14,263 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:28:14,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:28:14,264 INFO L85 PathProgramCache]: Analyzing trace with hash -699853685, now seen corresponding path program 1 times [2024-12-02 13:28:14,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:28:14,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229550178] [2024-12-02 13:28:14,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:28:14,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:28:14,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:28:15,263 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 53 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:28:15,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:28:15,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229550178] [2024-12-02 13:28:15,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229550178] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:28:15,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78912678] [2024-12-02 13:28:15,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:28:15,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:28:15,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:28:15,265 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:28:15,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-02 13:28:15,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:28:15,396 INFO L256 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 13:28:15,398 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:28:16,087 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 82 proven. 144 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 13:28:16,087 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:28:18,505 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 53 proven. 173 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 13:28:18,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78912678] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:28:18,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:28:18,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 11, 11] total 39 [2024-12-02 13:28:18,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091491657] [2024-12-02 13:28:18,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:28:18,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-12-02 13:28:18,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:28:18,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-12-02 13:28:18,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1392, Unknown=0, NotChecked=0, Total=1560 [2024-12-02 13:28:18,506 INFO L87 Difference]: Start difference. First operand 39782 states and 48093 transitions. Second operand has 40 states, 40 states have (on average 8.5) internal successors, (340), 39 states have internal predecessors, (340), 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) [2024-12-02 13:28:31,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:28:31,648 INFO L93 Difference]: Finished difference Result 78437 states and 94933 transitions. [2024-12-02 13:28:31,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-12-02 13:28:31,648 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 8.5) internal successors, (340), 39 states have internal predecessors, (340), 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 147 [2024-12-02 13:28:31,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:28:31,696 INFO L225 Difference]: With dead ends: 78437 [2024-12-02 13:28:31,696 INFO L226 Difference]: Without dead ends: 61145 [2024-12-02 13:28:31,708 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4383 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=3039, Invalid=12213, Unknown=0, NotChecked=0, Total=15252 [2024-12-02 13:28:31,708 INFO L435 NwaCegarLoop]: 1536 mSDtfsCounter, 25897 mSDsluCounter, 15887 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25897 SdHoareTripleChecker+Valid, 17423 SdHoareTripleChecker+Invalid, 1725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:28:31,708 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25897 Valid, 17423 Invalid, 1725 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 13:28:31,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61145 states. [2024-12-02 13:28:36,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61145 to 35142. [2024-12-02 13:28:36,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35142 states, 35140 states have (on average 1.1997438816163917) internal successors, (42159), 35141 states have internal predecessors, (42159), 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) [2024-12-02 13:28:36,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35142 states to 35142 states and 42159 transitions. [2024-12-02 13:28:36,962 INFO L78 Accepts]: Start accepts. Automaton has 35142 states and 42159 transitions. Word has length 147 [2024-12-02 13:28:36,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:28:36,962 INFO L471 AbstractCegarLoop]: Abstraction has 35142 states and 42159 transitions. [2024-12-02 13:28:36,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 8.5) internal successors, (340), 39 states have internal predecessors, (340), 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) [2024-12-02 13:28:36,962 INFO L276 IsEmpty]: Start isEmpty. Operand 35142 states and 42159 transitions. [2024-12-02 13:28:36,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 13:28:36,964 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:28:36,964 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:28:36,974 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-12-02 13:28:37,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-12-02 13:28:37,165 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:28:37,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:28:37,165 INFO L85 PathProgramCache]: Analyzing trace with hash -686891035, now seen corresponding path program 1 times [2024-12-02 13:28:37,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:28:37,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224809965] [2024-12-02 13:28:37,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:28:37,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:28:37,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:28:38,511 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 79 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:28:38,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:28:38,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224809965] [2024-12-02 13:28:38,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224809965] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:28:38,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059335083] [2024-12-02 13:28:38,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:28:38,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:28:38,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:28:38,513 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:28:38,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-02 13:28:38,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:28:38,659 INFO L256 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-12-02 13:28:38,661 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:28:41,679 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 93 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:28:41,679 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:28:47,030 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 61 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:28:47,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059335083] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:28:47,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:28:47,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25, 20] total 67 [2024-12-02 13:28:47,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699793458] [2024-12-02 13:28:47,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:28:47,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-12-02 13:28:47,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:28:47,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-12-02 13:28:47,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=4035, Unknown=0, NotChecked=0, Total=4422 [2024-12-02 13:28:47,032 INFO L87 Difference]: Start difference. First operand 35142 states and 42159 transitions. Second operand has 67 states, 67 states have (on average 5.82089552238806) internal successors, (390), 67 states have internal predecessors, (390), 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) [2024-12-02 13:29:37,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:29:37,166 INFO L93 Difference]: Finished difference Result 72420 states and 86587 transitions. [2024-12-02 13:29:37,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 234 states. [2024-12-02 13:29:37,167 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 5.82089552238806) internal successors, (390), 67 states have internal predecessors, (390), 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 147 [2024-12-02 13:29:37,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:29:37,210 INFO L225 Difference]: With dead ends: 72420 [2024-12-02 13:29:37,210 INFO L226 Difference]: Without dead ends: 53278 [2024-12-02 13:29:37,224 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31392 ImplicationChecksByTransitivity, 39.9s TimeCoverageRelationStatistics Valid=11432, Invalid=77670, Unknown=0, NotChecked=0, Total=89102 [2024-12-02 13:29:37,224 INFO L435 NwaCegarLoop]: 1646 mSDtfsCounter, 40513 mSDsluCounter, 38035 mSDsCounter, 0 mSdLazyCounter, 5504 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40513 SdHoareTripleChecker+Valid, 39681 SdHoareTripleChecker+Invalid, 5677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 5504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:29:37,224 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40513 Valid, 39681 Invalid, 5677 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [173 Valid, 5504 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-12-02 13:29:37,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53278 states. [2024-12-02 13:29:41,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53278 to 31606. [2024-12-02 13:29:41,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31606 states, 31604 states have (on average 1.1992152892038983) internal successors, (37900), 31605 states have internal predecessors, (37900), 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) [2024-12-02 13:29:42,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31606 states to 31606 states and 37900 transitions. [2024-12-02 13:29:42,007 INFO L78 Accepts]: Start accepts. Automaton has 31606 states and 37900 transitions. Word has length 147 [2024-12-02 13:29:42,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:29:42,007 INFO L471 AbstractCegarLoop]: Abstraction has 31606 states and 37900 transitions. [2024-12-02 13:29:42,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 5.82089552238806) internal successors, (390), 67 states have internal predecessors, (390), 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) [2024-12-02 13:29:42,007 INFO L276 IsEmpty]: Start isEmpty. Operand 31606 states and 37900 transitions. [2024-12-02 13:29:42,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 13:29:42,009 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:29:42,009 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:29:42,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-12-02 13:29:42,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:29:42,209 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:29:42,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:29:42,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1779334459, now seen corresponding path program 1 times [2024-12-02 13:29:42,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:29:42,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971474658] [2024-12-02 13:29:42,210 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:29:42,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:29:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:29:43,296 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 69 proven. 187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 13:29:43,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:29:43,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971474658] [2024-12-02 13:29:43,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971474658] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:29:43,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759536777] [2024-12-02 13:29:43,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:29:43,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:29:43,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:29:43,298 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:29:43,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8535c8f-622c-477e-8924-cd8dce3f9228/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process