./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label05.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_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/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_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/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_862d5496-5ae4-43fb-8c98-5a55531bcc72/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 55a25aaba499ad6f05f5b24cde70628308432569fd1f75e76cd806a685179688 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 11:12:05,014 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 11:12:05,068 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 11:12:05,073 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 11:12:05,073 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 11:12:05,094 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 11:12:05,095 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 11:12:05,095 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 11:12:05,095 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 11:12:05,095 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 11:12:05,096 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 11:12:05,096 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 11:12:05,096 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 11:12:05,096 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 11:12:05,096 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 11:12:05,096 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 11:12:05,097 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 11:12:05,097 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 11:12:05,097 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 11:12:05,097 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 11:12:05,097 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 11:12:05,097 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 11:12:05,097 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 11:12:05,097 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 11:12:05,097 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 11:12:05,097 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 11:12:05,098 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 11:12:05,098 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 11:12:05,098 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 11:12:05,098 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:12:05,098 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:12:05,098 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:12:05,098 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:12:05,098 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 11:12:05,098 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:12:05,098 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:12:05,099 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:12:05,099 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:12:05,099 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 11:12:05,099 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 11:12:05,099 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 11:12:05,099 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 11:12:05,099 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 11:12:05,099 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 11:12:05,099 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 11:12:05,100 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 11:12:05,100 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 11:12:05,100 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 11:12:05,100 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_862d5496-5ae4-43fb-8c98-5a55531bcc72/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 -> 55a25aaba499ad6f05f5b24cde70628308432569fd1f75e76cd806a685179688 [2024-12-02 11:12:05,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 11:12:05,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 11:12:05,332 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 11:12:05,333 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 11:12:05,334 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 11:12:05,335 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label05.c [2024-12-02 11:12:07,989 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/data/1c0e97d14/da83084476b54615a55d2458ce111aa3/FLAGb1819af86 [2024-12-02 11:12:08,459 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 11:12:08,460 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label05.c [2024-12-02 11:12:08,497 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/data/1c0e97d14/da83084476b54615a55d2458ce111aa3/FLAGb1819af86 [2024-12-02 11:12:08,564 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/data/1c0e97d14/da83084476b54615a55d2458ce111aa3 [2024-12-02 11:12:08,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 11:12:08,567 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 11:12:08,568 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 11:12:08,569 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 11:12:08,573 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 11:12:08,573 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:12:08" (1/1) ... [2024-12-02 11:12:08,574 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10dbfce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:12:08, skipping insertion in model container [2024-12-02 11:12:08,574 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:12:08" (1/1) ... [2024-12-02 11:12:08,671 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 11:12:08,933 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_862d5496-5ae4-43fb-8c98-5a55531bcc72/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label05.c[6391,6404] [2024-12-02 11:12:08,988 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_862d5496-5ae4-43fb-8c98-5a55531bcc72/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label05.c[13327,13340] [2024-12-02 11:12:09,577 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:12:09,585 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 11:12:09,607 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_862d5496-5ae4-43fb-8c98-5a55531bcc72/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label05.c[6391,6404] [2024-12-02 11:12:09,617 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_862d5496-5ae4-43fb-8c98-5a55531bcc72/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label05.c[13327,13340] [2024-12-02 11:12:10,026 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:12:10,050 INFO L204 MainTranslator]: Completed translation [2024-12-02 11:12:10,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:12:10 WrapperNode [2024-12-02 11:12:10,050 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 11:12:10,051 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 11:12:10,051 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 11:12:10,051 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 11:12:10,057 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:12:10" (1/1) ... [2024-12-02 11:12:10,112 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:12:10" (1/1) ... [2024-12-02 11:12:10,373 INFO L138 Inliner]: procedures = 33, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4982 [2024-12-02 11:12:10,373 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 11:12:10,374 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 11:12:10,374 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 11:12:10,374 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 11:12:10,383 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:12:10" (1/1) ... [2024-12-02 11:12:10,383 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:12:10" (1/1) ... [2024-12-02 11:12:10,428 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:12:10" (1/1) ... [2024-12-02 11:12:10,553 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 11:12:10,553 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:12:10" (1/1) ... [2024-12-02 11:12:10,553 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:12:10" (1/1) ... [2024-12-02 11:12:10,639 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:12:10" (1/1) ... [2024-12-02 11:12:10,649 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:12:10" (1/1) ... [2024-12-02 11:12:10,670 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:12:10" (1/1) ... [2024-12-02 11:12:10,683 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:12:10" (1/1) ... [2024-12-02 11:12:10,693 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:12:10" (1/1) ... [2024-12-02 11:12:10,737 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 11:12:10,738 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 11:12:10,738 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 11:12:10,738 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 11:12:10,739 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:12:10" (1/1) ... [2024-12-02 11:12:10,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:12:10,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:12:10,764 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 11:12:10,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 11:12:10,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 11:12:10,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 11:12:10,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 11:12:10,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 11:12:10,864 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 11:12:10,866 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 11:12:15,269 INFO L? ?]: Removed 732 outVars from TransFormulas that were not future-live. [2024-12-02 11:12:15,269 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 11:12:15,293 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 11:12:15,294 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-12-02 11:12:15,294 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:12:15 BoogieIcfgContainer [2024-12-02 11:12:15,294 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 11:12:15,296 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 11:12:15,297 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 11:12:15,300 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 11:12:15,300 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:12:08" (1/3) ... [2024-12-02 11:12:15,301 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e4f8c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:12:15, skipping insertion in model container [2024-12-02 11:12:15,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:12:10" (2/3) ... [2024-12-02 11:12:15,301 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e4f8c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:12:15, skipping insertion in model container [2024-12-02 11:12:15,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:12:15" (3/3) ... [2024-12-02 11:12:15,302 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label05.c [2024-12-02 11:12:15,312 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 11:12:15,315 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.3.1.ufo.BOUNDED-6.pals+Problem12_label05.c that has 1 procedures, 873 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-12-02 11:12:15,375 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 11:12:15,384 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;@3d577f15, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 11:12:15,385 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-02 11:12:15,390 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 11:12:15,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-12-02 11:12:15,395 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:12:15,395 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 11:12:15,396 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:12:15,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:12:15,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1661669358, now seen corresponding path program 1 times [2024-12-02 11:12:15,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:12:15,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910412377] [2024-12-02 11:12:15,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:12:15,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:12:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:12:15,568 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 11:12:15,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:12:15,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910412377] [2024-12-02 11:12:15,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910412377] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:12:15,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:12:15,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 11:12:15,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110057354] [2024-12-02 11:12:15,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:12:15,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 11:12:15,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:12:15,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 11:12:15,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 11:12:15,595 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 11:12:15,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:12:15,655 INFO L93 Difference]: Finished difference Result 1724 states and 3276 transitions. [2024-12-02 11:12:15,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 11:12:15,657 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 11:12:15,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:12:15,669 INFO L225 Difference]: With dead ends: 1724 [2024-12-02 11:12:15,669 INFO L226 Difference]: Without dead ends: 807 [2024-12-02 11:12:15,674 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 11:12:15,677 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 11:12:15,677 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 11:12:15,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2024-12-02 11:12:15,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 807. [2024-12-02 11:12:15,729 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 11:12:15,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1525 transitions. [2024-12-02 11:12:15,737 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1525 transitions. Word has length 21 [2024-12-02 11:12:15,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:12:15,738 INFO L471 AbstractCegarLoop]: Abstraction has 807 states and 1525 transitions. [2024-12-02 11:12:15,738 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 11:12:15,738 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1525 transitions. [2024-12-02 11:12:15,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-12-02 11:12:15,739 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:12:15,739 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 11:12:15,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 11:12:15,740 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:12:15,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:12:15,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1353434260, now seen corresponding path program 1 times [2024-12-02 11:12:15,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:12:15,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129815888] [2024-12-02 11:12:15,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:12:15,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:12:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:12:15,905 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 11:12:15,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:12:15,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129815888] [2024-12-02 11:12:15,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129815888] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:12:15,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:12:15,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 11:12:15,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614846048] [2024-12-02 11:12:15,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:12:15,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:12:15,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:12:15,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:12:15,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:12:15,908 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 11:12:16,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:12:16,008 INFO L93 Difference]: Finished difference Result 873 states and 1625 transitions. [2024-12-02 11:12:16,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:12:16,008 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 11:12:16,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:12:16,012 INFO L225 Difference]: With dead ends: 873 [2024-12-02 11:12:16,012 INFO L226 Difference]: Without dead ends: 838 [2024-12-02 11:12:16,013 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 11:12:16,014 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, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:12:16,014 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 6062 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:12:16,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2024-12-02 11:12:16,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 807. [2024-12-02 11:12:16,033 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 11:12:16,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1509 transitions. [2024-12-02 11:12:16,037 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1509 transitions. Word has length 21 [2024-12-02 11:12:16,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:12:16,037 INFO L471 AbstractCegarLoop]: Abstraction has 807 states and 1509 transitions. [2024-12-02 11:12:16,038 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 11:12:16,038 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1509 transitions. [2024-12-02 11:12:16,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-12-02 11:12:16,039 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:12:16,039 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 11:12:16,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 11:12:16,039 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:12:16,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:12:16,040 INFO L85 PathProgramCache]: Analyzing trace with hash 904930012, now seen corresponding path program 1 times [2024-12-02 11:12:16,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:12:16,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793311802] [2024-12-02 11:12:16,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:12:16,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:12:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:12:16,166 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 11:12:16,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:12:16,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793311802] [2024-12-02 11:12:16,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793311802] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:12:16,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:12:16,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 11:12:16,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7872172] [2024-12-02 11:12:16,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:12:16,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:12:16,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:12:16,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:12:16,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:12:16,168 INFO L87 Difference]: Start difference. First operand 807 states and 1509 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 11:12:16,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:12:16,292 INFO L93 Difference]: Finished difference Result 993 states and 1797 transitions. [2024-12-02 11:12:16,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 11:12:16,293 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 11:12:16,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:12:16,297 INFO L225 Difference]: With dead ends: 993 [2024-12-02 11:12:16,297 INFO L226 Difference]: Without dead ends: 962 [2024-12-02 11:12:16,298 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 11:12:16,299 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 11:12:16,299 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 11:12:16,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2024-12-02 11:12:16,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 836. [2024-12-02 11:12:16,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 834 states have (on average 1.8633093525179856) internal successors, (1554), 835 states have internal predecessors, (1554), 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 11:12:16,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1554 transitions. [2024-12-02 11:12:16,323 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1554 transitions. Word has length 36 [2024-12-02 11:12:16,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:12:16,324 INFO L471 AbstractCegarLoop]: Abstraction has 836 states and 1554 transitions. [2024-12-02 11:12:16,324 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 11:12:16,324 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1554 transitions. [2024-12-02 11:12:16,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-12-02 11:12:16,325 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:12:16,325 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 11:12:16,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 11:12:16,325 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:12:16,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:12:16,326 INFO L85 PathProgramCache]: Analyzing trace with hash 638646444, now seen corresponding path program 1 times [2024-12-02 11:12:16,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:12:16,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185581404] [2024-12-02 11:12:16,326 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:12:16,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:12:16,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:12:16,392 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 11:12:16,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:12:16,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185581404] [2024-12-02 11:12:16,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185581404] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:12:16,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:12:16,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:12:16,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937201789] [2024-12-02 11:12:16,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:12:16,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:12:16,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:12:16,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:12:16,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:12:16,394 INFO L87 Difference]: Start difference. First operand 836 states and 1554 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 11:12:16,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:12:16,427 INFO L93 Difference]: Finished difference Result 945 states and 1721 transitions. [2024-12-02 11:12:16,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:12:16,428 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 11:12:16,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:12:16,431 INFO L225 Difference]: With dead ends: 945 [2024-12-02 11:12:16,432 INFO L226 Difference]: Without dead ends: 885 [2024-12-02 11:12:16,432 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 11:12:16,433 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 11:12:16,433 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 11:12:16,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2024-12-02 11:12:16,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 883. [2024-12-02 11:12:16,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 881 states have (on average 1.8433598183881952) internal successors, (1624), 882 states have internal predecessors, (1624), 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 11:12:16,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1624 transitions. [2024-12-02 11:12:16,457 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1624 transitions. Word has length 38 [2024-12-02 11:12:16,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:12:16,458 INFO L471 AbstractCegarLoop]: Abstraction has 883 states and 1624 transitions. [2024-12-02 11:12:16,458 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 11:12:16,458 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1624 transitions. [2024-12-02 11:12:16,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-12-02 11:12:16,459 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:12:16,459 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 11:12:16,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 11:12:16,459 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:12:16,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:12:16,459 INFO L85 PathProgramCache]: Analyzing trace with hash 705139956, now seen corresponding path program 1 times [2024-12-02 11:12:16,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:12:16,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067231047] [2024-12-02 11:12:16,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:12:16,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:12:16,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:12:16,622 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 11:12:16,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:12:16,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067231047] [2024-12-02 11:12:16,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067231047] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:12:16,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:12:16,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 11:12:16,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52161849] [2024-12-02 11:12:16,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:12:16,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:12:16,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:12:16,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:12:16,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:12:16,623 INFO L87 Difference]: Start difference. First operand 883 states and 1624 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 11:12:16,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:12:16,699 INFO L93 Difference]: Finished difference Result 992 states and 1788 transitions. [2024-12-02 11:12:16,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:12:16,699 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 11:12:16,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:12:16,703 INFO L225 Difference]: With dead ends: 992 [2024-12-02 11:12:16,703 INFO L226 Difference]: Without dead ends: 885 [2024-12-02 11:12:16,704 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 11:12:16,704 INFO L435 NwaCegarLoop]: 1504 mSDtfsCounter, 1475 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:12:16,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1636 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:12:16,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2024-12-02 11:12:16,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 883. [2024-12-02 11:12:16,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 881 states have (on average 1.8410896708286038) internal successors, (1622), 882 states have internal predecessors, (1622), 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 11:12:16,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1622 transitions. [2024-12-02 11:12:16,718 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1622 transitions. Word has length 38 [2024-12-02 11:12:16,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:12:16,719 INFO L471 AbstractCegarLoop]: Abstraction has 883 states and 1622 transitions. [2024-12-02 11:12:16,719 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 11:12:16,719 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1622 transitions. [2024-12-02 11:12:16,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-12-02 11:12:16,720 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:12:16,720 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 11:12:16,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 11:12:16,720 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:12:16,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:12:16,721 INFO L85 PathProgramCache]: Analyzing trace with hash -30221064, now seen corresponding path program 1 times [2024-12-02 11:12:16,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:12:16,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870510306] [2024-12-02 11:12:16,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:12:16,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:12:16,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:12:16,862 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 11:12:16,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:12:16,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870510306] [2024-12-02 11:12:16,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870510306] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:12:16,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:12:16,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 11:12:16,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705078300] [2024-12-02 11:12:16,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:12:16,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:12:16,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:12:16,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:12:16,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:12:16,863 INFO L87 Difference]: Start difference. First operand 883 states and 1622 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 11:12:16,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:12:16,900 INFO L93 Difference]: Finished difference Result 891 states and 1631 transitions. [2024-12-02 11:12:16,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:12:16,901 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 11:12:16,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:12:16,905 INFO L225 Difference]: With dead ends: 891 [2024-12-02 11:12:16,905 INFO L226 Difference]: Without dead ends: 889 [2024-12-02 11:12:16,905 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 11:12:16,906 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 11:12:16,906 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 11:12:16,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2024-12-02 11:12:16,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 889. [2024-12-02 11:12:16,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 887 states have (on average 1.834272829763247) internal successors, (1627), 888 states have internal predecessors, (1627), 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 11:12:16,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1627 transitions. [2024-12-02 11:12:16,922 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1627 transitions. Word has length 39 [2024-12-02 11:12:16,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:12:16,923 INFO L471 AbstractCegarLoop]: Abstraction has 889 states and 1627 transitions. [2024-12-02 11:12:16,923 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 11:12:16,923 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1627 transitions. [2024-12-02 11:12:16,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-12-02 11:12:16,924 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:12:16,924 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 11:12:16,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 11:12:16,924 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:12:16,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:12:16,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1276756908, now seen corresponding path program 1 times [2024-12-02 11:12:16,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:12:16,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44523706] [2024-12-02 11:12:16,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:12:16,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:12:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:12:16,962 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 11:12:16,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:12:16,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44523706] [2024-12-02 11:12:16,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44523706] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:12:16,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:12:16,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:12:16,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619307143] [2024-12-02 11:12:16,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:12:16,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:12:16,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:12:16,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:12:16,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:12:16,963 INFO L87 Difference]: Start difference. First operand 889 states and 1627 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 11:12:16,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:12:16,984 INFO L93 Difference]: Finished difference Result 1099 states and 1931 transitions. [2024-12-02 11:12:16,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:12:16,985 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 11:12:16,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:12:16,987 INFO L225 Difference]: With dead ends: 1099 [2024-12-02 11:12:16,987 INFO L226 Difference]: Without dead ends: 986 [2024-12-02 11:12:16,988 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 11:12:16,988 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 11:12:16,988 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 11:12:16,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2024-12-02 11:12:17,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 984. [2024-12-02 11:12:17,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 982 states have (on average 1.7922606924643585) internal successors, (1760), 983 states have internal predecessors, (1760), 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 11:12:17,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1760 transitions. [2024-12-02 11:12:17,004 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1760 transitions. Word has length 40 [2024-12-02 11:12:17,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:12:17,004 INFO L471 AbstractCegarLoop]: Abstraction has 984 states and 1760 transitions. [2024-12-02 11:12:17,004 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 11:12:17,004 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1760 transitions. [2024-12-02 11:12:17,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-12-02 11:12:17,004 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:12:17,005 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 11:12:17,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 11:12:17,005 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:12:17,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:12:17,005 INFO L85 PathProgramCache]: Analyzing trace with hash 504175956, now seen corresponding path program 1 times [2024-12-02 11:12:17,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:12:17,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008373734] [2024-12-02 11:12:17,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:12:17,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:12:17,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:12:17,053 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 11:12:17,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:12:17,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008373734] [2024-12-02 11:12:17,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008373734] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:12:17,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:12:17,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:12:17,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228998808] [2024-12-02 11:12:17,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:12:17,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:12:17,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:12:17,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:12:17,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:12:17,055 INFO L87 Difference]: Start difference. First operand 984 states and 1760 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 11:12:17,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:12:17,080 INFO L93 Difference]: Finished difference Result 1368 states and 2302 transitions. [2024-12-02 11:12:17,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:12:17,081 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 11:12:17,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:12:17,084 INFO L225 Difference]: With dead ends: 1368 [2024-12-02 11:12:17,084 INFO L226 Difference]: Without dead ends: 1160 [2024-12-02 11:12:17,085 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 11:12:17,085 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 11:12:17,085 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 11:12:17,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2024-12-02 11:12:17,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1158. [2024-12-02 11:12:17,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 1156 states have (on average 1.7249134948096885) internal successors, (1994), 1157 states have internal predecessors, (1994), 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 11:12:17,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1994 transitions. [2024-12-02 11:12:17,104 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1994 transitions. Word has length 40 [2024-12-02 11:12:17,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:12:17,104 INFO L471 AbstractCegarLoop]: Abstraction has 1158 states and 1994 transitions. [2024-12-02 11:12:17,104 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 11:12:17,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1994 transitions. [2024-12-02 11:12:17,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-12-02 11:12:17,105 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:12:17,105 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 11:12:17,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 11:12:17,105 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:12:17,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:12:17,105 INFO L85 PathProgramCache]: Analyzing trace with hash 938711892, now seen corresponding path program 1 times [2024-12-02 11:12:17,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:12:17,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273237656] [2024-12-02 11:12:17,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:12:17,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:12:17,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:12:17,180 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 11:12:17,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:12:17,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273237656] [2024-12-02 11:12:17,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273237656] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:12:17,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:12:17,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:12:17,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577377896] [2024-12-02 11:12:17,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:12:17,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:12:17,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:12:17,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:12:17,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:12:17,182 INFO L87 Difference]: Start difference. First operand 1158 states and 1994 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 11:12:17,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:12:17,208 INFO L93 Difference]: Finished difference Result 1581 states and 2592 transitions. [2024-12-02 11:12:17,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:12:17,208 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 11:12:17,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:12:17,212 INFO L225 Difference]: With dead ends: 1581 [2024-12-02 11:12:17,212 INFO L226 Difference]: Without dead ends: 1355 [2024-12-02 11:12:17,212 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 11:12:17,213 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 11:12:17,213 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 11:12:17,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states. [2024-12-02 11:12:17,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 1353. [2024-12-02 11:12:17,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1353 states, 1351 states have (on average 1.6706143597335308) internal successors, (2257), 1352 states have internal predecessors, (2257), 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 11:12:17,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1353 states to 1353 states and 2257 transitions. [2024-12-02 11:12:17,237 INFO L78 Accepts]: Start accepts. Automaton has 1353 states and 2257 transitions. Word has length 40 [2024-12-02 11:12:17,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:12:17,238 INFO L471 AbstractCegarLoop]: Abstraction has 1353 states and 2257 transitions. [2024-12-02 11:12:17,238 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 11:12:17,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1353 states and 2257 transitions. [2024-12-02 11:12:17,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 11:12:17,238 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:12:17,238 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 11:12:17,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 11:12:17,239 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:12:17,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:12:17,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1906548838, now seen corresponding path program 1 times [2024-12-02 11:12:17,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:12:17,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365210276] [2024-12-02 11:12:17,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:12:17,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:12:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:12:17,346 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 11:12:17,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:12:17,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365210276] [2024-12-02 11:12:17,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365210276] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:12:17,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:12:17,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 11:12:17,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737802636] [2024-12-02 11:12:17,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:12:17,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:12:17,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:12:17,348 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:12:17,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:12:17,348 INFO L87 Difference]: Start difference. First operand 1353 states and 2257 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 11:12:17,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:12:17,434 INFO L93 Difference]: Finished difference Result 3209 states and 4809 transitions. [2024-12-02 11:12:17,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:12:17,435 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 11:12:17,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:12:17,440 INFO L225 Difference]: With dead ends: 3209 [2024-12-02 11:12:17,440 INFO L226 Difference]: Without dead ends: 2635 [2024-12-02 11:12:17,441 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 11:12:17,441 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 11:12:17,442 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 11:12:17,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2635 states. [2024-12-02 11:12:17,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2635 to 1925. [2024-12-02 11:12:17,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1925 states, 1923 states have (on average 1.579303172126885) internal successors, (3037), 1924 states have internal predecessors, (3037), 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 11:12:17,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 3037 transitions. [2024-12-02 11:12:17,480 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 3037 transitions. Word has length 56 [2024-12-02 11:12:17,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:12:17,480 INFO L471 AbstractCegarLoop]: Abstraction has 1925 states and 3037 transitions. [2024-12-02 11:12:17,480 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 11:12:17,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 3037 transitions. [2024-12-02 11:12:17,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 11:12:17,481 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:12:17,481 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 11:12:17,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 11:12:17,482 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:12:17,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:12:17,482 INFO L85 PathProgramCache]: Analyzing trace with hash -125615974, now seen corresponding path program 1 times [2024-12-02 11:12:17,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:12:17,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920493051] [2024-12-02 11:12:17,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:12:17,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:12:17,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:12:17,575 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 11:12:17,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:12:17,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920493051] [2024-12-02 11:12:17,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920493051] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:12:17,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:12:17,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 11:12:17,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178752619] [2024-12-02 11:12:17,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:12:17,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:12:17,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:12:17,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:12:17,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:12:17,576 INFO L87 Difference]: Start difference. First operand 1925 states and 3037 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 11:12:17,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:12:17,668 INFO L93 Difference]: Finished difference Result 3781 states and 5589 transitions. [2024-12-02 11:12:17,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:12:17,669 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 11:12:17,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:12:17,677 INFO L225 Difference]: With dead ends: 3781 [2024-12-02 11:12:17,677 INFO L226 Difference]: Without dead ends: 3207 [2024-12-02 11:12:17,678 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 11:12:17,679 INFO L435 NwaCegarLoop]: 1549 mSDtfsCounter, 3050 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3050 SdHoareTripleChecker+Valid, 3148 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:12:17,679 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3050 Valid, 3148 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:12:17,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3207 states. [2024-12-02 11:12:17,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3207 to 2785. [2024-12-02 11:12:17,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2785 states, 2783 states have (on average 1.5080848005749192) internal successors, (4197), 2784 states have internal predecessors, (4197), 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 11:12:17,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 4197 transitions. [2024-12-02 11:12:17,729 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 4197 transitions. Word has length 56 [2024-12-02 11:12:17,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:12:17,729 INFO L471 AbstractCegarLoop]: Abstraction has 2785 states and 4197 transitions. [2024-12-02 11:12:17,729 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 11:12:17,729 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 4197 transitions. [2024-12-02 11:12:17,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 11:12:17,730 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:12:17,730 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 11:12:17,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 11:12:17,730 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:12:17,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:12:17,730 INFO L85 PathProgramCache]: Analyzing trace with hash 308919962, now seen corresponding path program 1 times [2024-12-02 11:12:17,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:12:17,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830082346] [2024-12-02 11:12:17,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:12:17,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:12:17,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:12:17,809 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 11:12:17,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:12:17,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830082346] [2024-12-02 11:12:17,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830082346] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:12:17,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:12:17,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 11:12:17,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326071559] [2024-12-02 11:12:17,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:12:17,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:12:17,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:12:17,810 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:12:17,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:12:17,810 INFO L87 Difference]: Start difference. First operand 2785 states and 4197 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 11:12:17,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:12:17,928 INFO L93 Difference]: Finished difference Result 4041 states and 5953 transitions. [2024-12-02 11:12:17,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:12:17,929 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 11:12:17,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:12:17,940 INFO L225 Difference]: With dead ends: 4041 [2024-12-02 11:12:17,940 INFO L226 Difference]: Without dead ends: 3623 [2024-12-02 11:12:17,941 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 11:12:17,942 INFO L435 NwaCegarLoop]: 1547 mSDtfsCounter, 3041 mSDsluCounter, 1624 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3041 SdHoareTripleChecker+Valid, 3171 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:12:17,942 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3041 Valid, 3171 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:12:17,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3623 states. [2024-12-02 11:12:18,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3623 to 3201. [2024-12-02 11:12:18,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3201 states, 3199 states have (on average 1.4920287589871835) internal successors, (4773), 3200 states have internal predecessors, (4773), 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 11:12:18,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3201 states to 3201 states and 4773 transitions. [2024-12-02 11:12:18,034 INFO L78 Accepts]: Start accepts. Automaton has 3201 states and 4773 transitions. Word has length 56 [2024-12-02 11:12:18,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:12:18,034 INFO L471 AbstractCegarLoop]: Abstraction has 3201 states and 4773 transitions. [2024-12-02 11:12:18,034 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 11:12:18,034 INFO L276 IsEmpty]: Start isEmpty. Operand 3201 states and 4773 transitions. [2024-12-02 11:12:18,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-12-02 11:12:18,035 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:12:18,035 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 11:12:18,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 11:12:18,035 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:12:18,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:12:18,036 INFO L85 PathProgramCache]: Analyzing trace with hash 977738755, now seen corresponding path program 1 times [2024-12-02 11:12:18,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:12:18,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140925949] [2024-12-02 11:12:18,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:12:18,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:12:18,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:12:18,125 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 11:12:18,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:12:18,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140925949] [2024-12-02 11:12:18,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140925949] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:12:18,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:12:18,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:12:18,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006183660] [2024-12-02 11:12:18,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:12:18,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:12:18,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:12:18,126 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:12:18,126 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:12:18,127 INFO L87 Difference]: Start difference. First operand 3201 states and 4773 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 11:12:18,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:12:18,195 INFO L93 Difference]: Finished difference Result 5625 states and 8083 transitions. [2024-12-02 11:12:18,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:12:18,196 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 11:12:18,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:12:18,205 INFO L225 Difference]: With dead ends: 5625 [2024-12-02 11:12:18,205 INFO L226 Difference]: Without dead ends: 3203 [2024-12-02 11:12:18,208 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 11:12:18,208 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 11:12:18,209 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 11:12:18,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3203 states. [2024-12-02 11:12:18,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3203 to 3201. [2024-12-02 11:12:18,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3201 states, 3199 states have (on average 1.4763988746483276) internal successors, (4723), 3200 states have internal predecessors, (4723), 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 11:12:18,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3201 states to 3201 states and 4723 transitions. [2024-12-02 11:12:18,341 INFO L78 Accepts]: Start accepts. Automaton has 3201 states and 4723 transitions. Word has length 57 [2024-12-02 11:12:18,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:12:18,341 INFO L471 AbstractCegarLoop]: Abstraction has 3201 states and 4723 transitions. [2024-12-02 11:12:18,342 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 11:12:18,342 INFO L276 IsEmpty]: Start isEmpty. Operand 3201 states and 4723 transitions. [2024-12-02 11:12:18,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-12-02 11:12:18,343 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:12:18,343 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 11:12:18,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 11:12:18,343 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:12:18,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:12:18,343 INFO L85 PathProgramCache]: Analyzing trace with hash 408394290, now seen corresponding path program 1 times [2024-12-02 11:12:18,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:12:18,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256036099] [2024-12-02 11:12:18,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:12:18,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:12:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:12:18,430 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 11:12:18,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:12:18,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256036099] [2024-12-02 11:12:18,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256036099] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:12:18,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:12:18,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:12:18,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044957721] [2024-12-02 11:12:18,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:12:18,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:12:18,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:12:18,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:12:18,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:12:18,431 INFO L87 Difference]: Start difference. First operand 3201 states and 4723 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 11:12:18,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:12:18,481 INFO L93 Difference]: Finished difference Result 4157 states and 6020 transitions. [2024-12-02 11:12:18,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:12:18,482 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 11:12:18,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:12:18,487 INFO L225 Difference]: With dead ends: 4157 [2024-12-02 11:12:18,487 INFO L226 Difference]: Without dead ends: 1735 [2024-12-02 11:12:18,490 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 11:12:18,490 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 11:12:18,490 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 11:12:18,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2024-12-02 11:12:18,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1726. [2024-12-02 11:12:18,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1724 states have (on average 1.58584686774942) internal successors, (2734), 1725 states have internal predecessors, (2734), 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 11:12:18,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2734 transitions. [2024-12-02 11:12:18,535 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2734 transitions. Word has length 58 [2024-12-02 11:12:18,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:12:18,536 INFO L471 AbstractCegarLoop]: Abstraction has 1726 states and 2734 transitions. [2024-12-02 11:12:18,536 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 11:12:18,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2734 transitions. [2024-12-02 11:12:18,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-12-02 11:12:18,536 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:12:18,537 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 11:12:18,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 11:12:18,537 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:12:18,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:12:18,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1553558485, now seen corresponding path program 1 times [2024-12-02 11:12:18,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:12:18,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690732217] [2024-12-02 11:12:18,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:12:18,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:12:18,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:12:18,622 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 11:12:18,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:12:18,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690732217] [2024-12-02 11:12:18,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690732217] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:12:18,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:12:18,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:12:18,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680006252] [2024-12-02 11:12:18,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:12:18,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:12:18,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:12:18,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:12:18,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:12:18,624 INFO L87 Difference]: Start difference. First operand 1726 states and 2734 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 11:12:18,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:12:18,654 INFO L93 Difference]: Finished difference Result 2198 states and 3366 transitions. [2024-12-02 11:12:18,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:12:18,655 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 11:12:18,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:12:18,659 INFO L225 Difference]: With dead ends: 2198 [2024-12-02 11:12:18,659 INFO L226 Difference]: Without dead ends: 1260 [2024-12-02 11:12:18,661 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 11:12:18,661 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 11:12:18,661 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 11:12:18,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2024-12-02 11:12:18,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1258. [2024-12-02 11:12:18,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1256 states have (on average 1.6679936305732483) internal successors, (2095), 1257 states have internal predecessors, (2095), 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 11:12:18,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 2095 transitions. [2024-12-02 11:12:18,692 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 2095 transitions. Word has length 59 [2024-12-02 11:12:18,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:12:18,692 INFO L471 AbstractCegarLoop]: Abstraction has 1258 states and 2095 transitions. [2024-12-02 11:12:18,692 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 11:12:18,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 2095 transitions. [2024-12-02 11:12:18,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-12-02 11:12:18,693 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:12:18,693 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:12:18,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 11:12:18,693 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:12:18,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:12:18,693 INFO L85 PathProgramCache]: Analyzing trace with hash 144577125, now seen corresponding path program 1 times [2024-12-02 11:12:18,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:12:18,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989484590] [2024-12-02 11:12:18,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:12:18,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:12:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:12:18,836 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 11:12:18,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:12:18,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989484590] [2024-12-02 11:12:18,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989484590] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:12:18,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:12:18,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:12:18,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627243432] [2024-12-02 11:12:18,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:12:18,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:12:18,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:12:18,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:12:18,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:12:18,838 INFO L87 Difference]: Start difference. First operand 1258 states and 2095 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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 11:12:24,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:12:24,332 INFO L93 Difference]: Finished difference Result 3513 states and 6404 transitions. [2024-12-02 11:12:24,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:12:24,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2024-12-02 11:12:24,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:12:24,337 INFO L225 Difference]: With dead ends: 3513 [2024-12-02 11:12:24,337 INFO L226 Difference]: Without dead ends: 2760 [2024-12-02 11:12:24,338 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:12:24,339 INFO L435 NwaCegarLoop]: 763 mSDtfsCounter, 2339 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5154 mSolverCounterSat, 1245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2339 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 6399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1245 IncrementalHoareTripleChecker+Valid, 5154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-12-02 11:12:24,339 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2339 Valid, 781 Invalid, 6399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1245 Valid, 5154 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-12-02 11:12:24,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2760 states. [2024-12-02 11:12:24,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2760 to 2760. [2024-12-02 11:12:24,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2760 states, 2758 states have (on average 1.4760696156635242) internal successors, (4071), 2759 states have internal predecessors, (4071), 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 11:12:24,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2760 states to 2760 states and 4071 transitions. [2024-12-02 11:12:24,393 INFO L78 Accepts]: Start accepts. Automaton has 2760 states and 4071 transitions. Word has length 60 [2024-12-02 11:12:24,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:12:24,393 INFO L471 AbstractCegarLoop]: Abstraction has 2760 states and 4071 transitions. [2024-12-02 11:12:24,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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 11:12:24,394 INFO L276 IsEmpty]: Start isEmpty. Operand 2760 states and 4071 transitions. [2024-12-02 11:12:24,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-12-02 11:12:24,395 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:12:24,395 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 11:12:24,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 11:12:24,395 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:12:24,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:12:24,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1066169817, now seen corresponding path program 1 times [2024-12-02 11:12:24,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:12:24,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510775870] [2024-12-02 11:12:24,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:12:24,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:12:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:12:24,534 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 11:12:24,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:12:24,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510775870] [2024-12-02 11:12:24,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510775870] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:12:24,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749680484] [2024-12-02 11:12:24,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:12:24,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:12:24,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:12:24,537 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:12:24,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 11:12:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:12:24,643 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 11:12:24,647 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:12:24,778 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 11:12:24,779 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:12:25,124 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 11:12:25,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749680484] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:12:25,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:12:25,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 10 [2024-12-02 11:12:25,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729661646] [2024-12-02 11:12:25,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:12:25,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 11:12:25,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:12:25,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 11:12:25,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-12-02 11:12:25,126 INFO L87 Difference]: Start difference. First operand 2760 states and 4071 transitions. Second operand has 10 states, 10 states have (on average 15.9) internal successors, (159), 10 states have internal predecessors, (159), 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 11:12:25,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:12:25,238 INFO L93 Difference]: Finished difference Result 3877 states and 5520 transitions. [2024-12-02 11:12:25,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 11:12:25,238 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.9) internal successors, (159), 10 states have internal predecessors, (159), 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 11:12:25,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:12:25,246 INFO L225 Difference]: With dead ends: 3877 [2024-12-02 11:12:25,246 INFO L226 Difference]: Without dead ends: 3407 [2024-12-02 11:12:25,247 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-12-02 11:12:25,248 INFO L435 NwaCegarLoop]: 1518 mSDtfsCounter, 3021 mSDsluCounter, 4576 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3021 SdHoareTripleChecker+Valid, 6094 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:12:25,248 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3021 Valid, 6094 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:12:25,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3407 states. [2024-12-02 11:12:25,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3407 to 3343. [2024-12-02 11:12:25,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3341 states have (on average 1.4307093684525591) internal successors, (4780), 3342 states have internal predecessors, (4780), 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 11:12:25,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 4780 transitions. [2024-12-02 11:12:25,316 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 4780 transitions. Word has length 61 [2024-12-02 11:12:25,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:12:25,317 INFO L471 AbstractCegarLoop]: Abstraction has 3343 states and 4780 transitions. [2024-12-02 11:12:25,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.9) internal successors, (159), 10 states have internal predecessors, (159), 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 11:12:25,317 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 4780 transitions. [2024-12-02 11:12:25,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-02 11:12:25,317 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:12:25,317 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 11:12:25,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 11:12:25,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 11:12:25,518 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:12:25,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:12:25,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1754593394, now seen corresponding path program 1 times [2024-12-02 11:12:25,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:12:25,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053151695] [2024-12-02 11:12:25,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:12:25,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:12:25,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:12:25,991 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 11:12:25,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:12:25,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053151695] [2024-12-02 11:12:25,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053151695] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:12:25,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832339682] [2024-12-02 11:12:25,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:12:25,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:12:25,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:12:25,993 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:12:25,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 11:12:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:12:26,091 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 11:12:26,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:12:26,446 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 11:12:26,446 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:12:27,267 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 11:12:27,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832339682] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:12:27,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:12:27,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-12-02 11:12:27,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327404172] [2024-12-02 11:12:27,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:12:27,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 11:12:27,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:12:27,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 11:12:27,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2024-12-02 11:12:27,268 INFO L87 Difference]: Start difference. First operand 3343 states and 4780 transitions. Second operand has 21 states, 21 states have (on average 6.0) internal successors, (126), 20 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:12:27,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:12:27,645 INFO L93 Difference]: Finished difference Result 5239 states and 7166 transitions. [2024-12-02 11:12:27,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 11:12:27,646 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.0) internal successors, (126), 20 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-12-02 11:12:27,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:12:27,652 INFO L225 Difference]: With dead ends: 5239 [2024-12-02 11:12:27,653 INFO L226 Difference]: Without dead ends: 4271 [2024-12-02 11:12:27,654 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=208, Invalid=604, Unknown=0, NotChecked=0, Total=812 [2024-12-02 11:12:27,654 INFO L435 NwaCegarLoop]: 1493 mSDtfsCounter, 9061 mSDsluCounter, 3244 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9061 SdHoareTripleChecker+Valid, 4737 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:12:27,655 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9061 Valid, 4737 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 11:12:27,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4271 states. [2024-12-02 11:12:27,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4271 to 4267. [2024-12-02 11:12:27,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4267 states, 4265 states have (on average 1.3882766705744432) internal successors, (5921), 4266 states have internal predecessors, (5921), 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 11:12:27,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4267 states to 4267 states and 5921 transitions. [2024-12-02 11:12:27,720 INFO L78 Accepts]: Start accepts. Automaton has 4267 states and 5921 transitions. Word has length 62 [2024-12-02 11:12:27,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:12:27,720 INFO L471 AbstractCegarLoop]: Abstraction has 4267 states and 5921 transitions. [2024-12-02 11:12:27,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.0) internal successors, (126), 20 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:12:27,720 INFO L276 IsEmpty]: Start isEmpty. Operand 4267 states and 5921 transitions. [2024-12-02 11:12:27,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-02 11:12:27,721 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:12:27,721 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 11:12:27,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 11:12:27,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 11:12:27,921 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:12:27,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:12:27,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1327227278, now seen corresponding path program 1 times [2024-12-02 11:12:27,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:12:27,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787471815] [2024-12-02 11:12:27,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:12:27,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:12:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:12:28,330 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 11:12:28,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:12:28,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787471815] [2024-12-02 11:12:28,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787471815] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:12:28,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044837074] [2024-12-02 11:12:28,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:12:28,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:12:28,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:12:28,333 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:12:28,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 11:12:28,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:12:28,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-12-02 11:12:28,463 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:12:29,763 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 11:12:29,763 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:12:32,470 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 11:12:32,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044837074] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:12:32,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:12:32,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18, 19] total 41 [2024-12-02 11:12:32,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863125421] [2024-12-02 11:12:32,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:12:32,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-12-02 11:12:32,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:12:32,471 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-12-02 11:12:32,471 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=1347, Unknown=0, NotChecked=0, Total=1640 [2024-12-02 11:12:32,471 INFO L87 Difference]: Start difference. First operand 4267 states and 5921 transitions. Second operand has 41 states, 41 states have (on average 3.7560975609756095) internal successors, (154), 41 states have internal predecessors, (154), 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 11:12:36,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:12:36,275 INFO L93 Difference]: Finished difference Result 11237 states and 14652 transitions. [2024-12-02 11:12:36,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-12-02 11:12:36,275 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.7560975609756095) internal successors, (154), 41 states have internal predecessors, (154), 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 11:12:36,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:12:36,287 INFO L225 Difference]: With dead ends: 11237 [2024-12-02 11:12:36,287 INFO L226 Difference]: Without dead ends: 9420 [2024-12-02 11:12:36,291 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2336 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1793, Invalid=5863, Unknown=0, NotChecked=0, Total=7656 [2024-12-02 11:12:36,291 INFO L435 NwaCegarLoop]: 1507 mSDtfsCounter, 14498 mSDsluCounter, 12735 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14498 SdHoareTripleChecker+Valid, 14242 SdHoareTripleChecker+Invalid, 1207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 11:12:36,291 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14498 Valid, 14242 Invalid, 1207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 11:12:36,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9420 states. [2024-12-02 11:12:36,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9420 to 4951. [2024-12-02 11:12:36,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4951 states, 4949 states have (on average 1.3633057183269348) internal successors, (6747), 4950 states have internal predecessors, (6747), 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 11:12:36,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4951 states to 4951 states and 6747 transitions. [2024-12-02 11:12:36,464 INFO L78 Accepts]: Start accepts. Automaton has 4951 states and 6747 transitions. Word has length 62 [2024-12-02 11:12:36,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:12:36,464 INFO L471 AbstractCegarLoop]: Abstraction has 4951 states and 6747 transitions. [2024-12-02 11:12:36,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.7560975609756095) internal successors, (154), 41 states have internal predecessors, (154), 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 11:12:36,464 INFO L276 IsEmpty]: Start isEmpty. Operand 4951 states and 6747 transitions. [2024-12-02 11:12:36,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 11:12:36,465 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:12:36,465 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, 1] [2024-12-02 11:12:36,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 11:12:36,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:12:36,666 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:12:36,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:12:36,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1658760105, now seen corresponding path program 1 times [2024-12-02 11:12:36,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:12:36,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066369470] [2024-12-02 11:12:36,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:12:36,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:12:36,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:12:36,978 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 11:12:36,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:12:36,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066369470] [2024-12-02 11:12:36,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066369470] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:12:36,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981722486] [2024-12-02 11:12:36,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:12:36,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:12:36,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:12:36,980 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:12:36,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 11:12:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:12:37,106 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 11:12:37,108 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:12:38,197 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 11:12:38,198 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:12:39,580 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 11:12:39,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981722486] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:12:39,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:12:39,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16, 15] total 37 [2024-12-02 11:12:39,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151818195] [2024-12-02 11:12:39,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:12:39,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-12-02 11:12:39,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:12:39,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-12-02 11:12:39,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1188, Unknown=0, NotChecked=0, Total=1332 [2024-12-02 11:12:39,582 INFO L87 Difference]: Start difference. First operand 4951 states and 6747 transitions. Second operand has 37 states, 37 states have (on average 4.45945945945946) internal successors, (165), 37 states have internal predecessors, (165), 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 11:12:43,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:12:43,585 INFO L93 Difference]: Finished difference Result 16428 states and 20947 transitions. [2024-12-02 11:12:43,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-12-02 11:12:43,585 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.45945945945946) internal successors, (165), 37 states have internal predecessors, (165), 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 11:12:43,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:12:43,607 INFO L225 Difference]: With dead ends: 16428 [2024-12-02 11:12:43,607 INFO L226 Difference]: Without dead ends: 13950 [2024-12-02 11:12:43,612 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1863 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1214, Invalid=6268, Unknown=0, NotChecked=0, Total=7482 [2024-12-02 11:12:43,612 INFO L435 NwaCegarLoop]: 1505 mSDtfsCounter, 18768 mSDsluCounter, 17107 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18768 SdHoareTripleChecker+Valid, 18612 SdHoareTripleChecker+Invalid, 1208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 11:12:43,613 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18768 Valid, 18612 Invalid, 1208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 11:12:43,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13950 states. [2024-12-02 11:12:43,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13950 to 7537. [2024-12-02 11:12:43,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7537 states, 7535 states have (on average 1.3094890510948904) internal successors, (9867), 7536 states have internal predecessors, (9867), 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 11:12:43,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7537 states to 7537 states and 9867 transitions. [2024-12-02 11:12:43,952 INFO L78 Accepts]: Start accepts. Automaton has 7537 states and 9867 transitions. Word has length 63 [2024-12-02 11:12:43,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:12:43,952 INFO L471 AbstractCegarLoop]: Abstraction has 7537 states and 9867 transitions. [2024-12-02 11:12:43,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 4.45945945945946) internal successors, (165), 37 states have internal predecessors, (165), 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 11:12:43,952 INFO L276 IsEmpty]: Start isEmpty. Operand 7537 states and 9867 transitions. [2024-12-02 11:12:43,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 11:12:43,953 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:12:43,953 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, 1, 1] [2024-12-02 11:12:43,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 11:12:44,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:12:44,154 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:12:44,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:12:44,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1827537694, now seen corresponding path program 1 times [2024-12-02 11:12:44,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:12:44,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544806512] [2024-12-02 11:12:44,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:12:44,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:12:44,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:12:45,713 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 11:12:45,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:12:45,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544806512] [2024-12-02 11:12:45,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544806512] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:12:45,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673681015] [2024-12-02 11:12:45,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:12:45,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:12:45,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:12:45,715 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:12:45,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 11:12:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:12:45,823 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-12-02 11:12:45,826 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:12:48,034 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 11:12:48,034 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:12:50,488 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 11:12:50,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673681015] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:12:50,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:12:50,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22, 19] total 57 [2024-12-02 11:12:50,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396526542] [2024-12-02 11:12:50,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:12:50,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-12-02 11:12:50,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:12:50,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-12-02 11:12:50,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=2895, Unknown=0, NotChecked=0, Total=3192 [2024-12-02 11:12:50,491 INFO L87 Difference]: Start difference. First operand 7537 states and 9867 transitions. Second operand has 57 states, 57 states have (on average 3.0) internal successors, (171), 57 states have internal predecessors, (171), 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 11:13:05,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:13:05,916 INFO L93 Difference]: Finished difference Result 17607 states and 22202 transitions. [2024-12-02 11:13:05,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2024-12-02 11:13:05,917 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 3.0) internal successors, (171), 57 states have internal predecessors, (171), 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 64 [2024-12-02 11:13:05,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:13:05,930 INFO L225 Difference]: With dead ends: 17607 [2024-12-02 11:13:05,931 INFO L226 Difference]: Without dead ends: 13774 [2024-12-02 11:13:05,936 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5950 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=3566, Invalid=17314, Unknown=0, NotChecked=0, Total=20880 [2024-12-02 11:13:05,937 INFO L435 NwaCegarLoop]: 1508 mSDtfsCounter, 31384 mSDsluCounter, 23854 mSDsCounter, 0 mSdLazyCounter, 2542 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31384 SdHoareTripleChecker+Valid, 25362 SdHoareTripleChecker+Invalid, 2700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 2542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-12-02 11:13:05,937 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31384 Valid, 25362 Invalid, 2700 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [158 Valid, 2542 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-12-02 11:13:05,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13774 states. [2024-12-02 11:13:06,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13774 to 7973. [2024-12-02 11:13:06,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7973 states, 7971 states have (on average 1.3041023710952202) internal successors, (10395), 7972 states have internal predecessors, (10395), 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 11:13:06,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7973 states to 7973 states and 10395 transitions. [2024-12-02 11:13:06,226 INFO L78 Accepts]: Start accepts. Automaton has 7973 states and 10395 transitions. Word has length 64 [2024-12-02 11:13:06,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:13:06,226 INFO L471 AbstractCegarLoop]: Abstraction has 7973 states and 10395 transitions. [2024-12-02 11:13:06,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 3.0) internal successors, (171), 57 states have internal predecessors, (171), 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 11:13:06,226 INFO L276 IsEmpty]: Start isEmpty. Operand 7973 states and 10395 transitions. [2024-12-02 11:13:06,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-12-02 11:13:06,226 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:13:06,227 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, 1, 1, 1] [2024-12-02 11:13:06,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 11:13:06,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-12-02 11:13:06,427 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:13:06,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:13:06,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1994217637, now seen corresponding path program 1 times [2024-12-02 11:13:06,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:13:06,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092855665] [2024-12-02 11:13:06,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:13:06,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:13:06,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:13:06,949 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 11:13:06,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:13:06,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092855665] [2024-12-02 11:13:06,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092855665] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:13:06,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096488935] [2024-12-02 11:13:06,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:13:06,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:13:06,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:13:06,951 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:13:06,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 11:13:07,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:13:07,067 INFO L256 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-12-02 11:13:07,069 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:13:07,636 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 11:13:07,636 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:13:08,446 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 11:13:08,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096488935] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:13:08,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:13:08,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 33 [2024-12-02 11:13:08,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220801961] [2024-12-02 11:13:08,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:13:08,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-12-02 11:13:08,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:13:08,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-12-02 11:13:08,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=934, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 11:13:08,448 INFO L87 Difference]: Start difference. First operand 7973 states and 10395 transitions. Second operand has 33 states, 33 states have (on average 4.818181818181818) internal successors, (159), 33 states have internal predecessors, (159), 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 11:13:10,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:13:10,620 INFO L93 Difference]: Finished difference Result 17326 states and 22026 transitions. [2024-12-02 11:13:10,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 11:13:10,621 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.818181818181818) internal successors, (159), 33 states have internal predecessors, (159), 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 65 [2024-12-02 11:13:10,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:13:10,632 INFO L225 Difference]: With dead ends: 17326 [2024-12-02 11:13:10,632 INFO L226 Difference]: Without dead ends: 14970 [2024-12-02 11:13:10,636 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=580, Invalid=2390, Unknown=0, NotChecked=0, Total=2970 [2024-12-02 11:13:10,637 INFO L435 NwaCegarLoop]: 1495 mSDtfsCounter, 14699 mSDsluCounter, 13769 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14699 SdHoareTripleChecker+Valid, 15264 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 11:13:10,638 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14699 Valid, 15264 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 11:13:10,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14970 states. [2024-12-02 11:13:10,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14970 to 7680. [2024-12-02 11:13:10,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7680 states, 7678 states have (on average 1.3084136493878615) internal successors, (10046), 7679 states have internal predecessors, (10046), 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 11:13:10,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7680 states to 7680 states and 10046 transitions. [2024-12-02 11:13:10,921 INFO L78 Accepts]: Start accepts. Automaton has 7680 states and 10046 transitions. Word has length 65 [2024-12-02 11:13:10,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:13:10,922 INFO L471 AbstractCegarLoop]: Abstraction has 7680 states and 10046 transitions. [2024-12-02 11:13:10,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.818181818181818) internal successors, (159), 33 states have internal predecessors, (159), 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 11:13:10,922 INFO L276 IsEmpty]: Start isEmpty. Operand 7680 states and 10046 transitions. [2024-12-02 11:13:10,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 11:13:10,923 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:13:10,923 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:13:10,933 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 11:13:11,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-12-02 11:13:11,123 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:13:11,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:13:11,124 INFO L85 PathProgramCache]: Analyzing trace with hash 260849486, now seen corresponding path program 1 times [2024-12-02 11:13:11,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:13:11,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22642337] [2024-12-02 11:13:11,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:13:11,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:13:11,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:13:11,952 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 35 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:13:11,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:13:11,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22642337] [2024-12-02 11:13:11,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22642337] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:13:11,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739115858] [2024-12-02 11:13:11,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:13:11,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:13:11,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:13:11,954 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:13:11,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 11:13:12,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:13:12,072 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-12-02 11:13:12,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:13:13,186 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 21 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:13:13,186 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:13:14,898 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 17 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:13:14,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739115858] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:13:14,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:13:14,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 16] total 44 [2024-12-02 11:13:14,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62974400] [2024-12-02 11:13:14,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:13:14,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-12-02 11:13:14,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:13:14,900 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-12-02 11:13:14,901 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1734, Unknown=0, NotChecked=0, Total=1892 [2024-12-02 11:13:14,901 INFO L87 Difference]: Start difference. First operand 7680 states and 10046 transitions. Second operand has 44 states, 44 states have (on average 6.5227272727272725) internal successors, (287), 44 states have internal predecessors, (287), 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 11:13:22,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:13:22,079 INFO L93 Difference]: Finished difference Result 14472 states and 18412 transitions. [2024-12-02 11:13:22,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-12-02 11:13:22,080 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 6.5227272727272725) internal successors, (287), 44 states have internal predecessors, (287), 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 11:13:22,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:13:22,086 INFO L225 Difference]: With dead ends: 14472 [2024-12-02 11:13:22,086 INFO L226 Difference]: Without dead ends: 10772 [2024-12-02 11:13:22,089 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3274 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=1932, Invalid=9840, Unknown=0, NotChecked=0, Total=11772 [2024-12-02 11:13:22,090 INFO L435 NwaCegarLoop]: 1537 mSDtfsCounter, 21725 mSDsluCounter, 18073 mSDsCounter, 0 mSdLazyCounter, 2411 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21725 SdHoareTripleChecker+Valid, 19610 SdHoareTripleChecker+Invalid, 2488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-12-02 11:13:22,090 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21725 Valid, 19610 Invalid, 2488 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 2411 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-12-02 11:13:22,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10772 states. [2024-12-02 11:13:22,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10772 to 8766. [2024-12-02 11:13:22,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8766 states, 8764 states have (on average 1.2964399817434962) internal successors, (11362), 8765 states have internal predecessors, (11362), 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 11:13:22,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8766 states to 8766 states and 11362 transitions. [2024-12-02 11:13:22,444 INFO L78 Accepts]: Start accepts. Automaton has 8766 states and 11362 transitions. Word has length 104 [2024-12-02 11:13:22,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:13:22,444 INFO L471 AbstractCegarLoop]: Abstraction has 8766 states and 11362 transitions. [2024-12-02 11:13:22,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 6.5227272727272725) internal successors, (287), 44 states have internal predecessors, (287), 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 11:13:22,444 INFO L276 IsEmpty]: Start isEmpty. Operand 8766 states and 11362 transitions. [2024-12-02 11:13:22,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 11:13:22,445 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:13:22,445 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:13:22,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 11:13:22,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:13:22,646 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:13:22,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:13:22,646 INFO L85 PathProgramCache]: Analyzing trace with hash 2075020846, now seen corresponding path program 1 times [2024-12-02 11:13:22,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:13:22,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138307032] [2024-12-02 11:13:22,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:13:22,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:13:22,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:13:23,381 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 11:13:23,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:13:23,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138307032] [2024-12-02 11:13:23,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138307032] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:13:23,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504745396] [2024-12-02 11:13:23,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:13:23,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:13:23,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:13:23,383 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:13:23,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 11:13:23,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:13:23,503 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-12-02 11:13:23,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:13:26,836 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 33 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:13:26,836 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:13:32,686 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 33 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:13:32,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504745396] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:13:32,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:13:32,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 25, 24] total 61 [2024-12-02 11:13:32,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142510011] [2024-12-02 11:13:32,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:13:32,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-12-02 11:13:32,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:13:32,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-12-02 11:13:32,689 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=3311, Unknown=0, NotChecked=0, Total=3660 [2024-12-02 11:13:32,689 INFO L87 Difference]: Start difference. First operand 8766 states and 11362 transitions. Second operand has 61 states, 61 states have (on average 4.688524590163935) internal successors, (286), 61 states have internal predecessors, (286), 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 11:14:40,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:14:40,282 INFO L93 Difference]: Finished difference Result 20560 states and 25813 transitions. [2024-12-02 11:14:40,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2024-12-02 11:14:40,283 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.688524590163935) internal successors, (286), 61 states have internal predecessors, (286), 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 11:14:40,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:14:40,293 INFO L225 Difference]: With dead ends: 20560 [2024-12-02 11:14:40,294 INFO L226 Difference]: Without dead ends: 15535 [2024-12-02 11:14:40,300 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26103 ImplicationChecksByTransitivity, 65.0s TimeCoverageRelationStatistics Valid=10928, Invalid=56412, Unknown=0, NotChecked=0, Total=67340 [2024-12-02 11:14:40,301 INFO L435 NwaCegarLoop]: 1679 mSDtfsCounter, 27207 mSDsluCounter, 23369 mSDsCounter, 0 mSdLazyCounter, 3896 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27207 SdHoareTripleChecker+Valid, 25048 SdHoareTripleChecker+Invalid, 4034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 3896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-12-02 11:14:40,301 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27207 Valid, 25048 Invalid, 4034 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [138 Valid, 3896 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-12-02 11:14:40,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15535 states. [2024-12-02 11:14:41,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15535 to 12311. [2024-12-02 11:14:41,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12311 states, 12309 states have (on average 1.2719148590462264) internal successors, (15656), 12310 states have internal predecessors, (15656), 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 11:14:41,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12311 states to 12311 states and 15656 transitions. [2024-12-02 11:14:41,066 INFO L78 Accepts]: Start accepts. Automaton has 12311 states and 15656 transitions. Word has length 104 [2024-12-02 11:14:41,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:14:41,066 INFO L471 AbstractCegarLoop]: Abstraction has 12311 states and 15656 transitions. [2024-12-02 11:14:41,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.688524590163935) internal successors, (286), 61 states have internal predecessors, (286), 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 11:14:41,066 INFO L276 IsEmpty]: Start isEmpty. Operand 12311 states and 15656 transitions. [2024-12-02 11:14:41,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 11:14:41,068 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:14:41,068 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 11:14:41,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-12-02 11:14:41,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:14:41,269 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:14:41,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:14:41,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1449418917, now seen corresponding path program 1 times [2024-12-02 11:14:41,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:14:41,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283984343] [2024-12-02 11:14:41,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:14:41,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:14:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:14:42,313 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 11:14:42,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:14:42,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283984343] [2024-12-02 11:14:42,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283984343] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:14:42,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712035112] [2024-12-02 11:14:42,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:14:42,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:14:42,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:14:42,315 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:14:42,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 11:14:42,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:14:42,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-12-02 11:14:42,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:14:45,725 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 26 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:14:45,725 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:14:55,243 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 11:14:55,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712035112] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:14:55,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:14:55,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 27, 24] total 69 [2024-12-02 11:14:55,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838617037] [2024-12-02 11:14:55,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:14:55,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-12-02 11:14:55,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:14:55,244 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-12-02 11:14:55,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=532, Invalid=4160, Unknown=0, NotChecked=0, Total=4692 [2024-12-02 11:14:55,245 INFO L87 Difference]: Start difference. First operand 12311 states and 15656 transitions. Second operand has 69 states, 69 states have (on average 4.3478260869565215) internal successors, (300), 69 states have internal predecessors, (300), 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 11:15:35,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:15:35,701 INFO L93 Difference]: Finished difference Result 16584 states and 20880 transitions. [2024-12-02 11:15:35,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-12-02 11:15:35,702 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 4.3478260869565215) internal successors, (300), 69 states have internal predecessors, (300), 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 11:15:35,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:15:35,717 INFO L225 Difference]: With dead ends: 16584 [2024-12-02 11:15:35,718 INFO L226 Difference]: Without dead ends: 12992 [2024-12-02 11:15:35,724 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7003 ImplicationChecksByTransitivity, 41.0s TimeCoverageRelationStatistics Valid=4167, Invalid=20013, Unknown=0, NotChecked=0, Total=24180 [2024-12-02 11:15:35,724 INFO L435 NwaCegarLoop]: 1501 mSDtfsCounter, 27616 mSDsluCounter, 25907 mSDsCounter, 0 mSdLazyCounter, 1930 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27616 SdHoareTripleChecker+Valid, 27408 SdHoareTripleChecker+Invalid, 2064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-12-02 11:15:35,725 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27616 Valid, 27408 Invalid, 2064 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [134 Valid, 1930 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-12-02 11:15:35,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12992 states. [2024-12-02 11:15:36,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12992 to 12822. [2024-12-02 11:15:36,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12822 states, 12820 states have (on average 1.2669266770670826) internal successors, (16242), 12821 states have internal predecessors, (16242), 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 11:15:36,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12822 states to 12822 states and 16242 transitions. [2024-12-02 11:15:36,659 INFO L78 Accepts]: Start accepts. Automaton has 12822 states and 16242 transitions. Word has length 105 [2024-12-02 11:15:36,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:15:36,659 INFO L471 AbstractCegarLoop]: Abstraction has 12822 states and 16242 transitions. [2024-12-02 11:15:36,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 4.3478260869565215) internal successors, (300), 69 states have internal predecessors, (300), 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 11:15:36,659 INFO L276 IsEmpty]: Start isEmpty. Operand 12822 states and 16242 transitions. [2024-12-02 11:15:36,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 11:15:36,661 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:15:36,661 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:15:36,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 11:15:36,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-02 11:15:36,861 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:15:36,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:15:36,862 INFO L85 PathProgramCache]: Analyzing trace with hash 886549339, now seen corresponding path program 1 times [2024-12-02 11:15:36,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:15:36,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362104757] [2024-12-02 11:15:36,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:15:36,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:15:36,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:15:37,711 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 11:15:37,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:15:37,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362104757] [2024-12-02 11:15:37,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362104757] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:15:37,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860849611] [2024-12-02 11:15:37,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:15:37,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:15:37,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:15:37,713 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:15:37,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 11:15:37,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:15:37,855 INFO L256 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-12-02 11:15:37,857 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:15:40,866 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 25 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:15:40,866 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:15:48,607 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 11:15:48,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860849611] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:15:48,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:15:48,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 26, 23] total 65 [2024-12-02 11:15:48,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376691097] [2024-12-02 11:15:48,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:15:48,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-12-02 11:15:48,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:15:48,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-12-02 11:15:48,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=3819, Unknown=0, NotChecked=0, Total=4160 [2024-12-02 11:15:48,608 INFO L87 Difference]: Start difference. First operand 12822 states and 16242 transitions. Second operand has 65 states, 65 states have (on average 4.615384615384615) internal successors, (300), 65 states have internal predecessors, (300), 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 11:18:59,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:18:59,318 INFO L93 Difference]: Finished difference Result 35142 states and 43904 transitions. [2024-12-02 11:18:59,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 275 states. [2024-12-02 11:18:59,319 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 4.615384615384615) internal successors, (300), 65 states have internal predecessors, (300), 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 11:18:59,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:18:59,339 INFO L225 Difference]: With dead ends: 35142 [2024-12-02 11:18:59,339 INFO L226 Difference]: Without dead ends: 30316 [2024-12-02 11:18:59,346 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 332 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41894 ImplicationChecksByTransitivity, 184.2s TimeCoverageRelationStatistics Valid=13020, Invalid=98202, Unknown=0, NotChecked=0, Total=111222 [2024-12-02 11:18:59,346 INFO L435 NwaCegarLoop]: 1558 mSDtfsCounter, 28448 mSDsluCounter, 41009 mSDsCounter, 0 mSdLazyCounter, 4913 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28448 SdHoareTripleChecker+Valid, 42567 SdHoareTripleChecker+Invalid, 5112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 4913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:18:59,346 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28448 Valid, 42567 Invalid, 5112 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [199 Valid, 4913 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-12-02 11:18:59,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30316 states. [2024-12-02 11:19:01,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30316 to 19198. [2024-12-02 11:19:01,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19198 states, 19196 states have (on average 1.2537507814127944) internal successors, (24067), 19197 states have internal predecessors, (24067), 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 11:19:01,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19198 states to 19198 states and 24067 transitions. [2024-12-02 11:19:01,317 INFO L78 Accepts]: Start accepts. Automaton has 19198 states and 24067 transitions. Word has length 105 [2024-12-02 11:19:01,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:19:01,317 INFO L471 AbstractCegarLoop]: Abstraction has 19198 states and 24067 transitions. [2024-12-02 11:19:01,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 4.615384615384615) internal successors, (300), 65 states have internal predecessors, (300), 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 11:19:01,317 INFO L276 IsEmpty]: Start isEmpty. Operand 19198 states and 24067 transitions. [2024-12-02 11:19:01,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-12-02 11:19:01,319 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:19:01,320 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 11:19:01,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-12-02 11:19:01,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-02 11:19:01,520 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:19:01,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:19:01,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1118181688, now seen corresponding path program 1 times [2024-12-02 11:19:01,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:19:01,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646078709] [2024-12-02 11:19:01,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:19:01,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:19:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:19:03,328 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 11:19:03,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:19:03,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646078709] [2024-12-02 11:19:03,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646078709] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:19:03,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621760732] [2024-12-02 11:19:03,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:19:03,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:19:03,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:19:03,330 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:19:03,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 11:19:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:19:03,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-12-02 11:19:03,447 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:19:06,606 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 11:19:06,606 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:19:12,485 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 11:19:12,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621760732] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:19:12,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:19:12,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 22, 19] total 64 [2024-12-02 11:19:12,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313153422] [2024-12-02 11:19:12,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:19:12,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-12-02 11:19:12,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:19:12,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-12-02 11:19:12,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=3724, Unknown=0, NotChecked=0, Total=4032 [2024-12-02 11:19:12,487 INFO L87 Difference]: Start difference. First operand 19198 states and 24067 transitions. Second operand has 64 states, 64 states have (on average 4.515625) internal successors, (289), 64 states have internal predecessors, (289), 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 11:19:53,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:19:53,987 INFO L93 Difference]: Finished difference Result 43579 states and 53882 transitions. [2024-12-02 11:19:53,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2024-12-02 11:19:53,988 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.515625) internal successors, (289), 64 states have internal predecessors, (289), 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 11:19:53,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:19:54,006 INFO L225 Difference]: With dead ends: 43579 [2024-12-02 11:19:54,006 INFO L226 Difference]: Without dead ends: 27903 [2024-12-02 11:19:54,013 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13755 ImplicationChecksByTransitivity, 38.7s TimeCoverageRelationStatistics Valid=6195, Invalid=36861, Unknown=0, NotChecked=0, Total=43056 [2024-12-02 11:19:54,013 INFO L435 NwaCegarLoop]: 1574 mSDtfsCounter, 29170 mSDsluCounter, 31261 mSDsCounter, 0 mSdLazyCounter, 3529 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29170 SdHoareTripleChecker+Valid, 32835 SdHoareTripleChecker+Invalid, 3704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 3529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-12-02 11:19:54,014 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29170 Valid, 32835 Invalid, 3704 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [175 Valid, 3529 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-12-02 11:19:54,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27903 states. [2024-12-02 11:19:56,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27903 to 25184. [2024-12-02 11:19:56,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25184 states, 25182 states have (on average 1.2467238503693114) internal successors, (31395), 25183 states have internal predecessors, (31395), 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 11:19:56,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25184 states to 25184 states and 31395 transitions. [2024-12-02 11:19:56,326 INFO L78 Accepts]: Start accepts. Automaton has 25184 states and 31395 transitions. Word has length 106 [2024-12-02 11:19:56,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:19:56,326 INFO L471 AbstractCegarLoop]: Abstraction has 25184 states and 31395 transitions. [2024-12-02 11:19:56,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.515625) internal successors, (289), 64 states have internal predecessors, (289), 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 11:19:56,327 INFO L276 IsEmpty]: Start isEmpty. Operand 25184 states and 31395 transitions. [2024-12-02 11:19:56,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 11:19:56,328 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:19:56,328 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 11:19:56,338 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 11:19:56,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 11:19:56,529 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:19:56,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:19:56,529 INFO L85 PathProgramCache]: Analyzing trace with hash -667025751, now seen corresponding path program 1 times [2024-12-02 11:19:56,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:19:56,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739463823] [2024-12-02 11:19:56,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:19:56,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:19:56,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:19:58,376 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 11:19:58,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:19:58,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739463823] [2024-12-02 11:19:58,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739463823] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:19:58,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279659758] [2024-12-02 11:19:58,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:19:58,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:19:58,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:19:58,378 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:19:58,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 11:19:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:19:58,494 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 11:19:58,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:20:00,607 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 11:20:00,608 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:20:02,635 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 11:20:02,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279659758] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:20:02,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:20:02,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 17, 16] total 58 [2024-12-02 11:20:02,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821194642] [2024-12-02 11:20:02,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:20:02,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-12-02 11:20:02,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:20:02,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-12-02 11:20:02,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=3068, Unknown=0, NotChecked=0, Total=3306 [2024-12-02 11:20:02,636 INFO L87 Difference]: Start difference. First operand 25184 states and 31395 transitions. Second operand has 58 states, 58 states have (on average 5.224137931034483) internal successors, (303), 58 states have internal predecessors, (303), 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 11:20:21,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:20:21,169 INFO L93 Difference]: Finished difference Result 56097 states and 69613 transitions. [2024-12-02 11:20:21,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2024-12-02 11:20:21,169 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 5.224137931034483) internal successors, (303), 58 states have internal predecessors, (303), 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 11:20:21,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:20:21,196 INFO L225 Difference]: With dead ends: 56097 [2024-12-02 11:20:21,196 INFO L226 Difference]: Without dead ends: 37917 [2024-12-02 11:20:21,206 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9861 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=4658, Invalid=28648, Unknown=0, NotChecked=0, Total=33306 [2024-12-02 11:20:21,206 INFO L435 NwaCegarLoop]: 1543 mSDtfsCounter, 38313 mSDsluCounter, 37966 mSDsCounter, 0 mSdLazyCounter, 3146 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38313 SdHoareTripleChecker+Valid, 39509 SdHoareTripleChecker+Invalid, 3270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 3146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:20:21,207 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38313 Valid, 39509 Invalid, 3270 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [124 Valid, 3146 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-12-02 11:20:21,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37917 states. [2024-12-02 11:20:24,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37917 to 36621. [2024-12-02 11:20:24,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36621 states, 36619 states have (on average 1.2515633960512302) internal successors, (45831), 36620 states have internal predecessors, (45831), 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 11:20:24,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36621 states to 36621 states and 45831 transitions. [2024-12-02 11:20:24,874 INFO L78 Accepts]: Start accepts. Automaton has 36621 states and 45831 transitions. Word has length 107 [2024-12-02 11:20:24,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:20:24,874 INFO L471 AbstractCegarLoop]: Abstraction has 36621 states and 45831 transitions. [2024-12-02 11:20:24,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 5.224137931034483) internal successors, (303), 58 states have internal predecessors, (303), 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 11:20:24,874 INFO L276 IsEmpty]: Start isEmpty. Operand 36621 states and 45831 transitions. [2024-12-02 11:20:24,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-12-02 11:20:24,875 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:20:24,875 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, 1, 1] [2024-12-02 11:20:24,884 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 11:20:25,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 11:20:25,076 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:20:25,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:20:25,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1286141199, now seen corresponding path program 1 times [2024-12-02 11:20:25,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:20:25,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353077650] [2024-12-02 11:20:25,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:20:25,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:20:25,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:20:26,446 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 11:20:26,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:20:26,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353077650] [2024-12-02 11:20:26,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353077650] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:20:26,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568765629] [2024-12-02 11:20:26,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:20:26,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:20:26,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:20:26,448 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:20:26,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 11:20:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:20:26,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 11:20:26,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:20:27,571 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 53 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:20:27,571 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:20:29,385 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 43 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:20:29,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568765629] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:20:29,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:20:29,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 13, 12] total 48 [2024-12-02 11:20:29,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766213411] [2024-12-02 11:20:29,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:20:29,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-12-02 11:20:29,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:20:29,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-12-02 11:20:29,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=2072, Unknown=0, NotChecked=0, Total=2256 [2024-12-02 11:20:29,387 INFO L87 Difference]: Start difference. First operand 36621 states and 45831 transitions. Second operand has 48 states, 48 states have (on average 6.166666666666667) internal successors, (296), 48 states have internal predecessors, (296), 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 11:20:40,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:20:40,383 INFO L93 Difference]: Finished difference Result 84741 states and 105341 transitions. [2024-12-02 11:20:40,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-12-02 11:20:40,384 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 6.166666666666667) internal successors, (296), 48 states have internal predecessors, (296), 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 109 [2024-12-02 11:20:40,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:20:40,428 INFO L225 Difference]: With dead ends: 84741 [2024-12-02 11:20:40,428 INFO L226 Difference]: Without dead ends: 56839 [2024-12-02 11:20:40,439 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1772 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1675, Invalid=7255, Unknown=0, NotChecked=0, Total=8930 [2024-12-02 11:20:40,439 INFO L435 NwaCegarLoop]: 1587 mSDtfsCounter, 24306 mSDsluCounter, 25786 mSDsCounter, 0 mSdLazyCounter, 2561 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24306 SdHoareTripleChecker+Valid, 27373 SdHoareTripleChecker+Invalid, 2625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-02 11:20:40,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24306 Valid, 27373 Invalid, 2625 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 2561 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-02 11:20:40,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56839 states. [2024-12-02 11:20:45,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56839 to 49783. [2024-12-02 11:20:45,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49783 states, 49781 states have (on average 1.234205821498162) internal successors, (61440), 49782 states have internal predecessors, (61440), 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 11:20:45,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49783 states to 49783 states and 61440 transitions. [2024-12-02 11:20:45,701 INFO L78 Accepts]: Start accepts. Automaton has 49783 states and 61440 transitions. Word has length 109 [2024-12-02 11:20:45,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:20:45,701 INFO L471 AbstractCegarLoop]: Abstraction has 49783 states and 61440 transitions. [2024-12-02 11:20:45,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 6.166666666666667) internal successors, (296), 48 states have internal predecessors, (296), 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 11:20:45,701 INFO L276 IsEmpty]: Start isEmpty. Operand 49783 states and 61440 transitions. [2024-12-02 11:20:45,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-12-02 11:20:45,702 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:20:45,702 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, 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 11:20:45,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 11:20:45,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 11:20:45,902 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:20:45,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:20:45,903 INFO L85 PathProgramCache]: Analyzing trace with hash 252592076, now seen corresponding path program 1 times [2024-12-02 11:20:45,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:20:45,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820775922] [2024-12-02 11:20:45,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:20:45,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:20:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:20:46,725 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 32 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:20:46,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:20:46,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820775922] [2024-12-02 11:20:46,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820775922] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:20:46,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570683641] [2024-12-02 11:20:46,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:20:46,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:20:46,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:20:46,727 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:20:46,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 11:20:46,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:20:46,844 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-12-02 11:20:46,846 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:20:49,469 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 63 proven. 7 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 11:20:49,470 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:21:00,980 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 32 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:21:00,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570683641] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:21:00,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:21:00,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 34] total 74 [2024-12-02 11:21:00,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917167285] [2024-12-02 11:21:00,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:21:00,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-12-02 11:21:00,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:21:00,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-12-02 11:21:00,982 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=4823, Unknown=0, NotChecked=0, Total=5402 [2024-12-02 11:21:00,982 INFO L87 Difference]: Start difference. First operand 49783 states and 61440 transitions. Second operand has 74 states, 74 states have (on average 3.7567567567567566) internal successors, (278), 74 states have internal predecessors, (278), 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 11:23:02,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:23:02,904 INFO L93 Difference]: Finished difference Result 103391 states and 126061 transitions. [2024-12-02 11:23:02,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 243 states. [2024-12-02 11:23:02,904 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 3.7567567567567566) internal successors, (278), 74 states have internal predecessors, (278), 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 110 [2024-12-02 11:23:02,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:23:02,964 INFO L225 Difference]: With dead ends: 103391 [2024-12-02 11:23:02,964 INFO L226 Difference]: Without dead ends: 81770 [2024-12-02 11:23:02,981 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 167 SyntacticMatches, 2 SemanticMatches, 313 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41008 ImplicationChecksByTransitivity, 111.7s TimeCoverageRelationStatistics Valid=16171, Invalid=82739, Unknown=0, NotChecked=0, Total=98910 [2024-12-02 11:23:02,982 INFO L435 NwaCegarLoop]: 1528 mSDtfsCounter, 35198 mSDsluCounter, 29055 mSDsCounter, 0 mSdLazyCounter, 3468 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35198 SdHoareTripleChecker+Valid, 30583 SdHoareTripleChecker+Invalid, 3756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 3468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-12-02 11:23:02,982 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35198 Valid, 30583 Invalid, 3756 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [288 Valid, 3468 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-12-02 11:23:03,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81770 states. [2024-12-02 11:23:09,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81770 to 49588. [2024-12-02 11:23:09,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49588 states, 49586 states have (on average 1.234481506876941) internal successors, (61213), 49587 states have internal predecessors, (61213), 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 11:23:09,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49588 states to 49588 states and 61213 transitions. [2024-12-02 11:23:09,108 INFO L78 Accepts]: Start accepts. Automaton has 49588 states and 61213 transitions. Word has length 110 [2024-12-02 11:23:09,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:23:09,109 INFO L471 AbstractCegarLoop]: Abstraction has 49588 states and 61213 transitions. [2024-12-02 11:23:09,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 3.7567567567567566) internal successors, (278), 74 states have internal predecessors, (278), 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 11:23:09,109 INFO L276 IsEmpty]: Start isEmpty. Operand 49588 states and 61213 transitions. [2024-12-02 11:23:09,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-12-02 11:23:09,110 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:23:09,111 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:23:09,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-12-02 11:23:09,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:23:09,311 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:23:09,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:23:09,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1176272186, now seen corresponding path program 1 times [2024-12-02 11:23:09,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:23:09,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619824719] [2024-12-02 11:23:09,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:23:09,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:23:09,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:23:09,406 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:23:09,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:23:09,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619824719] [2024-12-02 11:23:09,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619824719] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:23:09,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:23:09,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:23:09,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291558098] [2024-12-02 11:23:09,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:23:09,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:23:09,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:23:09,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:23:09,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:23:09,407 INFO L87 Difference]: Start difference. First operand 49588 states and 61213 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 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 11:23:19,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:23:19,256 INFO L93 Difference]: Finished difference Result 53382 states and 67318 transitions. [2024-12-02 11:23:19,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:23:19,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 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 131 [2024-12-02 11:23:19,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:23:19,307 INFO L225 Difference]: With dead ends: 53382 [2024-12-02 11:23:19,307 INFO L226 Difference]: Without dead ends: 51090 [2024-12-02 11:23:19,313 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:23:19,313 INFO L435 NwaCegarLoop]: 763 mSDtfsCounter, 772 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 3107 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 3836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 3107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-12-02 11:23:19,313 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 847 Invalid, 3836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 3107 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-12-02 11:23:19,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51090 states. [2024-12-02 11:23:25,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51090 to 51090. [2024-12-02 11:23:25,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51090 states, 51088 states have (on average 1.2292123394926402) internal successors, (62798), 51089 states have internal predecessors, (62798), 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 11:23:25,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51090 states to 51090 states and 62798 transitions. [2024-12-02 11:23:25,395 INFO L78 Accepts]: Start accepts. Automaton has 51090 states and 62798 transitions. Word has length 131 [2024-12-02 11:23:25,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:23:25,395 INFO L471 AbstractCegarLoop]: Abstraction has 51090 states and 62798 transitions. [2024-12-02 11:23:25,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 3 states have internal predecessors, (131), 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 11:23:25,395 INFO L276 IsEmpty]: Start isEmpty. Operand 51090 states and 62798 transitions. [2024-12-02 11:23:25,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-12-02 11:23:25,398 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:23:25,398 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, 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 11:23:25,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-12-02 11:23:25,399 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:23:25,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:23:25,399 INFO L85 PathProgramCache]: Analyzing trace with hash -811669857, now seen corresponding path program 1 times [2024-12-02 11:23:25,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:23:25,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755491833] [2024-12-02 11:23:25,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:23:25,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:23:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:23:26,518 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 67 proven. 186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:23:26,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:23:26,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755491833] [2024-12-02 11:23:26,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755491833] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:23:26,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831334972] [2024-12-02 11:23:26,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:23:26,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:23:26,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:23:26,520 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:23:26,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 11:23:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:23:26,654 INFO L256 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-12-02 11:23:26,656 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:23:27,867 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 64 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:23:27,867 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:23:34,552 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 54 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:23:34,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831334972] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:23:34,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:23:34,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 17] total 51 [2024-12-02 11:23:34,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789802278] [2024-12-02 11:23:34,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:23:34,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-12-02 11:23:34,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:23:34,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-12-02 11:23:34,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=2362, Unknown=0, NotChecked=0, Total=2652 [2024-12-02 11:23:34,554 INFO L87 Difference]: Start difference. First operand 51090 states and 62798 transitions. Second operand has 52 states, 52 states have (on average 7.75) internal successors, (403), 51 states have internal predecessors, (403), 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 11:24:17,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:24:17,574 INFO L93 Difference]: Finished difference Result 240668 states and 295710 transitions. [2024-12-02 11:24:17,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2024-12-02 11:24:17,574 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 7.75) internal successors, (403), 51 states have internal predecessors, (403), 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 145 [2024-12-02 11:24:17,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:24:17,819 INFO L225 Difference]: With dead ends: 240668 [2024-12-02 11:24:17,819 INFO L226 Difference]: Without dead ends: 196848 [2024-12-02 11:24:17,859 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 266 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26155 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=11699, Invalid=59857, Unknown=0, NotChecked=0, Total=71556 [2024-12-02 11:24:17,859 INFO L435 NwaCegarLoop]: 1492 mSDtfsCounter, 30710 mSDsluCounter, 22435 mSDsCounter, 0 mSdLazyCounter, 2616 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30710 SdHoareTripleChecker+Valid, 23927 SdHoareTripleChecker+Invalid, 2780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 2616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-12-02 11:24:17,859 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30710 Valid, 23927 Invalid, 2780 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [164 Valid, 2616 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-12-02 11:24:17,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196848 states. [2024-12-02 11:24:32,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196848 to 102192. [2024-12-02 11:24:32,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102192 states, 102190 states have (on average 1.2116645464331148) internal successors, (123820), 102191 states have internal predecessors, (123820), 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 11:24:32,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102192 states to 102192 states and 123820 transitions. [2024-12-02 11:24:32,430 INFO L78 Accepts]: Start accepts. Automaton has 102192 states and 123820 transitions. Word has length 145 [2024-12-02 11:24:32,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:24:32,430 INFO L471 AbstractCegarLoop]: Abstraction has 102192 states and 123820 transitions. [2024-12-02 11:24:32,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 7.75) internal successors, (403), 51 states have internal predecessors, (403), 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 11:24:32,430 INFO L276 IsEmpty]: Start isEmpty. Operand 102192 states and 123820 transitions. [2024-12-02 11:24:32,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-12-02 11:24:32,434 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:24:32,434 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, 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 11:24:32,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-12-02 11:24:32,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-12-02 11:24:32,635 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:24:32,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:24:32,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1451294332, now seen corresponding path program 1 times [2024-12-02 11:24:32,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:24:32,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404871305] [2024-12-02 11:24:32,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:24:32,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:24:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:24:33,338 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 86 proven. 160 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 11:24:33,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:24:33,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404871305] [2024-12-02 11:24:33,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404871305] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:24:33,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357549044] [2024-12-02 11:24:33,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:24:33,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:24:33,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:24:33,340 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:24:33,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 11:24:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:24:33,467 INFO L256 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-12-02 11:24:33,469 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:24:35,338 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 117 proven. 129 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 11:24:35,338 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:24:40,446 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 76 proven. 170 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 11:24:40,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357549044] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:24:40,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:24:40,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 23] total 61 [2024-12-02 11:24:40,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507125465] [2024-12-02 11:24:40,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:24:40,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-12-02 11:24:40,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:24:40,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-12-02 11:24:40,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=479, Invalid=3181, Unknown=0, NotChecked=0, Total=3660 [2024-12-02 11:24:40,448 INFO L87 Difference]: Start difference. First operand 102192 states and 123820 transitions. Second operand has 61 states, 61 states have (on average 6.721311475409836) internal successors, (410), 61 states have internal predecessors, (410), 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 11:25:01,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:25:01,534 INFO L93 Difference]: Finished difference Result 184277 states and 223255 transitions. [2024-12-02 11:25:01,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-12-02 11:25:01,535 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 6.721311475409836) internal successors, (410), 61 states have internal predecessors, (410), 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 146 [2024-12-02 11:25:01,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:25:01,637 INFO L225 Difference]: With dead ends: 184277 [2024-12-02 11:25:01,637 INFO L226 Difference]: Without dead ends: 121071 [2024-12-02 11:25:01,661 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2611 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=2298, Invalid=8622, Unknown=0, NotChecked=0, Total=10920 [2024-12-02 11:25:01,662 INFO L435 NwaCegarLoop]: 1516 mSDtfsCounter, 17427 mSDsluCounter, 32838 mSDsCounter, 0 mSdLazyCounter, 1590 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17427 SdHoareTripleChecker+Valid, 34354 SdHoareTripleChecker+Invalid, 1668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:25:01,662 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17427 Valid, 34354 Invalid, 1668 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 1590 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 11:25:01,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121071 states. [2024-12-02 11:25:16,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121071 to 106126. [2024-12-02 11:25:16,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106126 states, 106124 states have (on average 1.209867701933587) internal successors, (128396), 106125 states have internal predecessors, (128396), 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 11:25:17,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106126 states to 106126 states and 128396 transitions. [2024-12-02 11:25:17,202 INFO L78 Accepts]: Start accepts. Automaton has 106126 states and 128396 transitions. Word has length 146 [2024-12-02 11:25:17,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:25:17,202 INFO L471 AbstractCegarLoop]: Abstraction has 106126 states and 128396 transitions. [2024-12-02 11:25:17,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 6.721311475409836) internal successors, (410), 61 states have internal predecessors, (410), 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 11:25:17,202 INFO L276 IsEmpty]: Start isEmpty. Operand 106126 states and 128396 transitions. [2024-12-02 11:25:17,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-12-02 11:25:17,206 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:25:17,206 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, 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 11:25:17,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-12-02 11:25:17,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:25:17,406 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:25:17,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:25:17,406 INFO L85 PathProgramCache]: Analyzing trace with hash 416290472, now seen corresponding path program 2 times [2024-12-02 11:25:17,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:25:17,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083921718] [2024-12-02 11:25:17,407 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 11:25:17,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:25:17,434 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 11:25:17,434 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:25:18,045 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 39 proven. 208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:25:18,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:25:18,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083921718] [2024-12-02 11:25:18,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083921718] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:25:18,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67267195] [2024-12-02 11:25:18,046 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 11:25:18,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:25:18,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:25:18,047 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:25:18,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 11:25:18,177 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 11:25:18,177 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:25:18,179 INFO L256 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-12-02 11:25:18,181 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:25:20,093 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 39 proven. 208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:25:20,093 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:25:23,177 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 42 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:25:23,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67267195] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:25:23,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:25:23,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 55 [2024-12-02 11:25:23,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012409448] [2024-12-02 11:25:23,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:25:23,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-12-02 11:25:23,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:25:23,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-12-02 11:25:23,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=2633, Unknown=0, NotChecked=0, Total=2970 [2024-12-02 11:25:23,179 INFO L87 Difference]: Start difference. First operand 106126 states and 128396 transitions. Second operand has 55 states, 55 states have (on average 7.6909090909090905) internal successors, (423), 55 states have internal predecessors, (423), 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 11:25:40,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:25:40,944 INFO L93 Difference]: Finished difference Result 177940 states and 215629 transitions. [2024-12-02 11:25:40,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-12-02 11:25:40,945 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 7.6909090909090905) internal successors, (423), 55 states have internal predecessors, (423), 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 146 [2024-12-02 11:25:40,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:25:41,027 INFO L225 Difference]: With dead ends: 177940 [2024-12-02 11:25:41,027 INFO L226 Difference]: Without dead ends: 94306 [2024-12-02 11:25:41,059 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 257 SyntacticMatches, 1 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3273 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=2389, Invalid=10267, Unknown=0, NotChecked=0, Total=12656 [2024-12-02 11:25:41,059 INFO L435 NwaCegarLoop]: 1537 mSDtfsCounter, 15977 mSDsluCounter, 26009 mSDsCounter, 0 mSdLazyCounter, 1958 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15977 SdHoareTripleChecker+Valid, 27546 SdHoareTripleChecker+Invalid, 2025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 11:25:41,059 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15977 Valid, 27546 Invalid, 2025 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 1958 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 11:25:41,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94306 states. [2024-12-02 11:25:51,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94306 to 71284. [2024-12-02 11:25:51,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71284 states, 71282 states have (on average 1.2088886394882299) internal successors, (86172), 71283 states have internal predecessors, (86172), 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 11:25:51,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71284 states to 71284 states and 86172 transitions. [2024-12-02 11:25:51,867 INFO L78 Accepts]: Start accepts. Automaton has 71284 states and 86172 transitions. Word has length 146 [2024-12-02 11:25:51,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:25:51,867 INFO L471 AbstractCegarLoop]: Abstraction has 71284 states and 86172 transitions. [2024-12-02 11:25:51,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 7.6909090909090905) internal successors, (423), 55 states have internal predecessors, (423), 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 11:25:51,867 INFO L276 IsEmpty]: Start isEmpty. Operand 71284 states and 86172 transitions. [2024-12-02 11:25:51,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-12-02 11:25:51,870 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:25:51,870 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, 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 11:25:51,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-12-02 11:25:52,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:25:52,070 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:25:52,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:25:52,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1067985248, now seen corresponding path program 1 times [2024-12-02 11:25:52,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:25:52,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843381696] [2024-12-02 11:25:52,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:52,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:25:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:53,862 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 39 proven. 207 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 11:25:53,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:25:53,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843381696] [2024-12-02 11:25:53,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843381696] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:25:53,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655876145] [2024-12-02 11:25:53,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:25:53,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:25:53,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:25:53,864 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:25:53,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_862d5496-5ae4-43fb-8c98-5a55531bcc72/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-02 11:25:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:25:53,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-12-02 11:25:54,000 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:25:56,175 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 55 proven. 191 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 11:25:56,175 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:26:00,587 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 66 proven. 180 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 11:26:00,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655876145] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:26:00,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:26:00,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 21, 20] total 66 [2024-12-02 11:26:00,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860125046] [2024-12-02 11:26:00,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:26:00,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-12-02 11:26:00,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:26:00,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-12-02 11:26:00,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=3985, Unknown=0, NotChecked=0, Total=4290 [2024-12-02 11:26:00,589 INFO L87 Difference]: Start difference. First operand 71284 states and 86172 transitions. Second operand has 66 states, 66 states have (on average 6.2727272727272725) internal successors, (414), 66 states have internal predecessors, (414), 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)