./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label01.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_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/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_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/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_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/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 cbac78224547ffded4eea2a5da15a43fb2fd2b6c73f073f7e365339f5e128336 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 14:31:08,580 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 14:31:08,632 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 14:31:08,635 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 14:31:08,636 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 14:31:08,655 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 14:31:08,655 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 14:31:08,655 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 14:31:08,656 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 14:31:08,656 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 14:31:08,656 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 14:31:08,656 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 14:31:08,656 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 14:31:08,657 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 14:31:08,657 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 14:31:08,657 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 14:31:08,657 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 14:31:08,657 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 14:31:08,657 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 14:31:08,657 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 14:31:08,657 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 14:31:08,657 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 14:31:08,657 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 14:31:08,657 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 14:31:08,658 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 14:31:08,658 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 14:31:08,658 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 14:31:08,658 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 14:31:08,658 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 14:31:08,658 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:31:08,658 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:31:08,658 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:31:08,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:31:08,658 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 14:31:08,659 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:31:08,659 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:31:08,659 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:31:08,659 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:31:08,659 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 14:31:08,659 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 14:31:08,659 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 14:31:08,659 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 14:31:08,659 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 14:31:08,659 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 14:31:08,660 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 14:31:08,660 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 14:31:08,660 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 14:31:08,660 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 14:31:08,660 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_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/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 -> cbac78224547ffded4eea2a5da15a43fb2fd2b6c73f073f7e365339f5e128336 [2024-12-02 14:31:08,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 14:31:08,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 14:31:08,868 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 14:31:08,869 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 14:31:08,870 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 14:31:08,871 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label01.c [2024-12-02 14:31:11,479 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/data/96b4f1693/3d8608d8a6fa4826a8f7cb3091a65e7e/FLAGea64bf9e6 [2024-12-02 14:31:11,885 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 14:31:11,886 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label01.c [2024-12-02 14:31:11,911 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/data/96b4f1693/3d8608d8a6fa4826a8f7cb3091a65e7e/FLAGea64bf9e6 [2024-12-02 14:31:12,064 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/data/96b4f1693/3d8608d8a6fa4826a8f7cb3091a65e7e [2024-12-02 14:31:12,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 14:31:12,067 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 14:31:12,068 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 14:31:12,068 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 14:31:12,071 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 14:31:12,071 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:31:12" (1/1) ... [2024-12-02 14:31:12,072 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ca7c743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:31:12, skipping insertion in model container [2024-12-02 14:31:12,072 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:31:12" (1/1) ... [2024-12-02 14:31:12,139 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 14:31:12,397 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_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label01.c[11640,11653] [2024-12-02 14:31:12,444 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_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label01.c[17195,17208] [2024-12-02 14:31:12,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:31:12,946 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 14:31:12,975 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_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label01.c[11640,11653] [2024-12-02 14:31:12,984 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_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label01.c[17195,17208] [2024-12-02 14:31:13,354 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:31:13,374 INFO L204 MainTranslator]: Completed translation [2024-12-02 14:31:13,375 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:31:13 WrapperNode [2024-12-02 14:31:13,375 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 14:31:13,376 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 14:31:13,376 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 14:31:13,376 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 14:31:13,381 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:31:13" (1/1) ... [2024-12-02 14:31:13,420 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:31:13" (1/1) ... [2024-12-02 14:31:13,684 INFO L138 Inliner]: procedures = 36, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5097 [2024-12-02 14:31:13,684 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 14:31:13,685 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 14:31:13,685 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 14:31:13,685 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 14:31:13,693 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:31:13" (1/1) ... [2024-12-02 14:31:13,693 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:31:13" (1/1) ... [2024-12-02 14:31:13,732 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:31:13" (1/1) ... [2024-12-02 14:31:13,876 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 14:31:13,876 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:31:13" (1/1) ... [2024-12-02 14:31:13,877 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:31:13" (1/1) ... [2024-12-02 14:31:14,034 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:31:13" (1/1) ... [2024-12-02 14:31:14,050 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:31:13" (1/1) ... [2024-12-02 14:31:14,087 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:31:13" (1/1) ... [2024-12-02 14:31:14,120 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:31:13" (1/1) ... [2024-12-02 14:31:14,138 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:31:13" (1/1) ... [2024-12-02 14:31:14,199 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 14:31:14,200 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 14:31:14,201 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 14:31:14,201 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 14:31:14,202 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:31:13" (1/1) ... [2024-12-02 14:31:14,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:31:14,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:31:14,233 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 14:31:14,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 14:31:14,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 14:31:14,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 14:31:14,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 14:31:14,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 14:31:14,355 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 14:31:14,357 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 14:31:18,668 INFO L? ?]: Removed 744 outVars from TransFormulas that were not future-live. [2024-12-02 14:31:18,668 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 14:31:18,695 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 14:31:18,696 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-12-02 14:31:18,696 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:31:18 BoogieIcfgContainer [2024-12-02 14:31:18,696 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 14:31:18,699 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 14:31:18,699 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 14:31:18,703 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 14:31:18,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:31:12" (1/3) ... [2024-12-02 14:31:18,704 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95383f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:31:18, skipping insertion in model container [2024-12-02 14:31:18,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:31:13" (2/3) ... [2024-12-02 14:31:18,704 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95383f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:31:18, skipping insertion in model container [2024-12-02 14:31:18,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:31:18" (3/3) ... [2024-12-02 14:31:18,706 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label01.c [2024-12-02 14:31:18,717 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 14:31:18,719 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label01.c that has 1 procedures, 900 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-12-02 14:31:18,783 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 14:31:18,794 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;@6c5975d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 14:31:18,794 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-02 14:31:18,800 INFO L276 IsEmpty]: Start isEmpty. Operand has 900 states, 897 states have (on average 1.9041248606465997) internal successors, (1708), 899 states have internal predecessors, (1708), 0 states have call successors, (0), 0 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 14:31:18,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-12-02 14:31:18,806 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:18,806 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] [2024-12-02 14:31:18,806 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:18,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:18,810 INFO L85 PathProgramCache]: Analyzing trace with hash 920833856, now seen corresponding path program 1 times [2024-12-02 14:31:18,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:18,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773000550] [2024-12-02 14:31:18,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:18,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:18,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:19,010 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 14:31:19,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:19,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773000550] [2024-12-02 14:31:19,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773000550] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:19,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:19,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 14:31:19,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007997606] [2024-12-02 14:31:19,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:19,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 14:31:19,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:19,034 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 14:31:19,035 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 14:31:19,039 INFO L87 Difference]: Start difference. First operand has 900 states, 897 states have (on average 1.9041248606465997) internal successors, (1708), 899 states have internal predecessors, (1708), 0 states have call successors, (0), 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 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 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 14:31:19,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:19,096 INFO L93 Difference]: Finished difference Result 1763 states and 3346 transitions. [2024-12-02 14:31:19,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 14:31:19,098 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2024-12-02 14:31:19,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:19,110 INFO L225 Difference]: With dead ends: 1763 [2024-12-02 14:31:19,111 INFO L226 Difference]: Without dead ends: 834 [2024-12-02 14:31:19,115 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 14:31:19,117 INFO L435 NwaCegarLoop]: 1642 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, 1642 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 14:31:19,118 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1642 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:31:19,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2024-12-02 14:31:19,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 834. [2024-12-02 14:31:19,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 832 states have (on average 1.8930288461538463) internal successors, (1575), 833 states have internal predecessors, (1575), 0 states have call successors, (0), 0 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 14:31:19,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1575 transitions. [2024-12-02 14:31:19,180 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1575 transitions. Word has length 25 [2024-12-02 14:31:19,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:19,181 INFO L471 AbstractCegarLoop]: Abstraction has 834 states and 1575 transitions. [2024-12-02 14:31:19,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 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 14:31:19,181 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1575 transitions. [2024-12-02 14:31:19,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-12-02 14:31:19,182 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:19,182 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] [2024-12-02 14:31:19,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 14:31:19,182 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:19,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:19,183 INFO L85 PathProgramCache]: Analyzing trace with hash -768109886, now seen corresponding path program 1 times [2024-12-02 14:31:19,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:19,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776964482] [2024-12-02 14:31:19,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:19,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:19,389 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 14:31:19,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:19,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776964482] [2024-12-02 14:31:19,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776964482] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:19,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:19,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:31:19,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880636267] [2024-12-02 14:31:19,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:19,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:31:19,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:19,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:31:19,392 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:31:19,392 INFO L87 Difference]: Start difference. First operand 834 states and 1575 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 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 14:31:19,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:19,504 INFO L93 Difference]: Finished difference Result 881 states and 1647 transitions. [2024-12-02 14:31:19,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:31:19,504 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2024-12-02 14:31:19,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:19,508 INFO L225 Difference]: With dead ends: 881 [2024-12-02 14:31:19,508 INFO L226 Difference]: Without dead ends: 834 [2024-12-02 14:31:19,509 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 14:31:19,510 INFO L435 NwaCegarLoop]: 1573 mSDtfsCounter, 0 mSDsluCounter, 4683 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6256 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:19,510 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6256 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:31:19,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2024-12-02 14:31:19,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 834. [2024-12-02 14:31:19,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 832 states have (on average 1.8557692307692308) internal successors, (1544), 833 states have internal predecessors, (1544), 0 states have call successors, (0), 0 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 14:31:19,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1544 transitions. [2024-12-02 14:31:19,535 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1544 transitions. Word has length 25 [2024-12-02 14:31:19,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:19,535 INFO L471 AbstractCegarLoop]: Abstraction has 834 states and 1544 transitions. [2024-12-02 14:31:19,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 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 14:31:19,535 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1544 transitions. [2024-12-02 14:31:19,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-12-02 14:31:19,536 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:19,536 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] [2024-12-02 14:31:19,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 14:31:19,537 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:19,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:19,537 INFO L85 PathProgramCache]: Analyzing trace with hash 464936565, now seen corresponding path program 1 times [2024-12-02 14:31:19,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:19,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454117629] [2024-12-02 14:31:19,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:19,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:19,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:19,630 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 14:31:19,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:19,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454117629] [2024-12-02 14:31:19,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454117629] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:19,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:19,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 14:31:19,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503231283] [2024-12-02 14:31:19,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:19,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:31:19,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:19,631 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:31:19,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:31:19,632 INFO L87 Difference]: Start difference. First operand 834 states and 1544 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 14:31:23,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:23,008 INFO L93 Difference]: Finished difference Result 2338 states and 4417 transitions. [2024-12-02 14:31:23,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:31:23,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2024-12-02 14:31:23,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:23,015 INFO L225 Difference]: With dead ends: 2338 [2024-12-02 14:31:23,015 INFO L226 Difference]: Without dead ends: 1585 [2024-12-02 14:31:23,016 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:31:23,017 INFO L435 NwaCegarLoop]: 175 mSDtfsCounter, 872 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 3275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:23,017 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 182 Invalid, 3275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-12-02 14:31:23,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2024-12-02 14:31:23,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1585. [2024-12-02 14:31:23,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1583 states have (on average 1.8439671509791535) internal successors, (2919), 1584 states have internal predecessors, (2919), 0 states have call successors, (0), 0 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 14:31:23,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2919 transitions. [2024-12-02 14:31:23,075 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2919 transitions. Word has length 48 [2024-12-02 14:31:23,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:23,075 INFO L471 AbstractCegarLoop]: Abstraction has 1585 states and 2919 transitions. [2024-12-02 14:31:23,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 14:31:23,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2919 transitions. [2024-12-02 14:31:23,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-12-02 14:31:23,077 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:23,077 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] [2024-12-02 14:31:23,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 14:31:23,077 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:23,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:23,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1032471947, now seen corresponding path program 1 times [2024-12-02 14:31:23,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:23,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367560761] [2024-12-02 14:31:23,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:23,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:23,281 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 14:31:23,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:23,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367560761] [2024-12-02 14:31:23,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367560761] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:23,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:23,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:31:23,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070995869] [2024-12-02 14:31:23,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:23,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:31:23,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:23,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:31:23,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:31:23,283 INFO L87 Difference]: Start difference. First operand 1585 states and 2919 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 14:31:23,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:23,514 INFO L93 Difference]: Finished difference Result 2015 states and 3599 transitions. [2024-12-02 14:31:23,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 14:31:23,514 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2024-12-02 14:31:23,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:23,521 INFO L225 Difference]: With dead ends: 2015 [2024-12-02 14:31:23,521 INFO L226 Difference]: Without dead ends: 1972 [2024-12-02 14:31:23,522 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2024-12-02 14:31:23,523 INFO L435 NwaCegarLoop]: 1540 mSDtfsCounter, 7906 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7906 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:23,523 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7906 Valid, 3025 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:31:23,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2024-12-02 14:31:23,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 1626. [2024-12-02 14:31:23,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1624 states have (on average 1.8374384236453203) internal successors, (2984), 1625 states have internal predecessors, (2984), 0 states have call successors, (0), 0 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 14:31:23,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 2984 transitions. [2024-12-02 14:31:23,555 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 2984 transitions. Word has length 55 [2024-12-02 14:31:23,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:23,555 INFO L471 AbstractCegarLoop]: Abstraction has 1626 states and 2984 transitions. [2024-12-02 14:31:23,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 14:31:23,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 2984 transitions. [2024-12-02 14:31:23,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-12-02 14:31:23,557 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:23,557 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] [2024-12-02 14:31:23,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 14:31:23,557 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:23,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:23,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1347601061, now seen corresponding path program 1 times [2024-12-02 14:31:23,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:23,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363572438] [2024-12-02 14:31:23,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:23,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:23,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:23,621 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 14:31:23,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:23,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363572438] [2024-12-02 14:31:23,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363572438] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:23,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:23,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:31:23,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360823858] [2024-12-02 14:31:23,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:23,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:31:23,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:23,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:31:23,622 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:31:23,622 INFO L87 Difference]: Start difference. First operand 1626 states and 2984 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 14:31:23,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:23,652 INFO L93 Difference]: Finished difference Result 1783 states and 3231 transitions. [2024-12-02 14:31:23,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:31:23,652 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 14:31:23,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:23,657 INFO L225 Difference]: With dead ends: 1783 [2024-12-02 14:31:23,657 INFO L226 Difference]: Without dead ends: 1699 [2024-12-02 14:31:23,658 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 14:31:23,658 INFO L435 NwaCegarLoop]: 1542 mSDtfsCounter, 1482 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1605 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 14:31:23,658 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1605 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:31:23,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2024-12-02 14:31:23,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1697. [2024-12-02 14:31:23,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1697 states, 1695 states have (on average 1.8253687315634217) internal successors, (3094), 1696 states have internal predecessors, (3094), 0 states have call successors, (0), 0 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 14:31:23,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 3094 transitions. [2024-12-02 14:31:23,691 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 3094 transitions. Word has length 57 [2024-12-02 14:31:23,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:23,692 INFO L471 AbstractCegarLoop]: Abstraction has 1697 states and 3094 transitions. [2024-12-02 14:31:23,692 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 14:31:23,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 3094 transitions. [2024-12-02 14:31:23,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-12-02 14:31:23,694 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:23,694 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] [2024-12-02 14:31:23,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 14:31:23,694 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:23,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:23,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1281107549, now seen corresponding path program 1 times [2024-12-02 14:31:23,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:23,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083939043] [2024-12-02 14:31:23,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:23,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:23,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:24,036 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 14:31:24,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:24,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083939043] [2024-12-02 14:31:24,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083939043] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:24,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:24,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:31:24,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261222209] [2024-12-02 14:31:24,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:24,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:31:24,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:24,038 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:31:24,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:31:24,038 INFO L87 Difference]: Start difference. First operand 1697 states and 3094 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 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 14:31:24,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:24,218 INFO L93 Difference]: Finished difference Result 1854 states and 3338 transitions. [2024-12-02 14:31:24,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:31:24,219 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 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 14:31:24,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:24,225 INFO L225 Difference]: With dead ends: 1854 [2024-12-02 14:31:24,225 INFO L226 Difference]: Without dead ends: 1699 [2024-12-02 14:31:24,226 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:31:24,227 INFO L435 NwaCegarLoop]: 1537 mSDtfsCounter, 1509 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 1862 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:24,227 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1509 Valid, 1862 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:31:24,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2024-12-02 14:31:24,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1697. [2024-12-02 14:31:24,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1697 states, 1695 states have (on average 1.824188790560472) internal successors, (3092), 1696 states have internal predecessors, (3092), 0 states have call successors, (0), 0 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 14:31:24,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 3092 transitions. [2024-12-02 14:31:24,254 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 3092 transitions. Word has length 57 [2024-12-02 14:31:24,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:24,254 INFO L471 AbstractCegarLoop]: Abstraction has 1697 states and 3092 transitions. [2024-12-02 14:31:24,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 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 14:31:24,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 3092 transitions. [2024-12-02 14:31:24,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-12-02 14:31:24,255 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:24,255 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] [2024-12-02 14:31:24,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 14:31:24,255 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:24,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:24,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1474351433, now seen corresponding path program 1 times [2024-12-02 14:31:24,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:24,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48471238] [2024-12-02 14:31:24,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:24,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:24,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:24,462 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 14:31:24,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:24,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48471238] [2024-12-02 14:31:24,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48471238] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:24,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:24,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 14:31:24,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279285512] [2024-12-02 14:31:24,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:24,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 14:31:24,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:24,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 14:31:24,464 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:31:24,464 INFO L87 Difference]: Start difference. First operand 1697 states and 3092 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 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 14:31:24,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:24,516 INFO L93 Difference]: Finished difference Result 1705 states and 3101 transitions. [2024-12-02 14:31:24,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:31:24,516 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 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 14:31:24,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:24,522 INFO L225 Difference]: With dead ends: 1705 [2024-12-02 14:31:24,522 INFO L226 Difference]: Without dead ends: 1703 [2024-12-02 14:31:24,522 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:31:24,523 INFO L435 NwaCegarLoop]: 1538 mSDtfsCounter, 0 mSDsluCounter, 9215 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10753 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:24,523 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10753 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:31:24,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2024-12-02 14:31:24,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1703. [2024-12-02 14:31:24,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1703 states, 1701 states have (on average 1.8206937095825986) internal successors, (3097), 1702 states have internal predecessors, (3097), 0 states have call successors, (0), 0 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 14:31:24,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1703 states to 1703 states and 3097 transitions. [2024-12-02 14:31:24,544 INFO L78 Accepts]: Start accepts. Automaton has 1703 states and 3097 transitions. Word has length 58 [2024-12-02 14:31:24,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:24,544 INFO L471 AbstractCegarLoop]: Abstraction has 1703 states and 3097 transitions. [2024-12-02 14:31:24,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 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 14:31:24,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1703 states and 3097 transitions. [2024-12-02 14:31:24,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-12-02 14:31:24,545 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:24,546 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:31:24,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 14:31:24,546 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:24,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:24,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1913192451, now seen corresponding path program 1 times [2024-12-02 14:31:24,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:24,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627868978] [2024-12-02 14:31:24,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:24,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:24,596 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 14:31:24,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:24,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627868978] [2024-12-02 14:31:24,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627868978] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:24,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:24,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:31:24,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080269572] [2024-12-02 14:31:24,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:24,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:31:24,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:24,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:31:24,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:31:24,597 INFO L87 Difference]: Start difference. First operand 1703 states and 3097 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 14:31:24,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:24,621 INFO L93 Difference]: Finished difference Result 1878 states and 3363 transitions. [2024-12-02 14:31:24,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:31:24,622 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 14:31:24,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:24,626 INFO L225 Difference]: With dead ends: 1878 [2024-12-02 14:31:24,626 INFO L226 Difference]: Without dead ends: 1788 [2024-12-02 14:31:24,627 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 14:31:24,627 INFO L435 NwaCegarLoop]: 1596 mSDtfsCounter, 1496 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1665 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 14:31:24,628 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1665 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:31:24,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1788 states. [2024-12-02 14:31:24,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1788 to 1786. [2024-12-02 14:31:24,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1786 states, 1784 states have (on average 1.8054932735426008) internal successors, (3221), 1785 states have internal predecessors, (3221), 0 states have call successors, (0), 0 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 14:31:24,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1786 states to 1786 states and 3221 transitions. [2024-12-02 14:31:24,652 INFO L78 Accepts]: Start accepts. Automaton has 1786 states and 3221 transitions. Word has length 59 [2024-12-02 14:31:24,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:24,653 INFO L471 AbstractCegarLoop]: Abstraction has 1786 states and 3221 transitions. [2024-12-02 14:31:24,653 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 14:31:24,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1786 states and 3221 transitions. [2024-12-02 14:31:24,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-12-02 14:31:24,653 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:24,653 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:31:24,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 14:31:24,654 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:24,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:24,654 INFO L85 PathProgramCache]: Analyzing trace with hash -2117918461, now seen corresponding path program 1 times [2024-12-02 14:31:24,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:24,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350029571] [2024-12-02 14:31:24,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:24,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:24,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:24,697 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 14:31:24,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:24,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350029571] [2024-12-02 14:31:24,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350029571] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:24,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:24,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:31:24,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054788557] [2024-12-02 14:31:24,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:24,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:31:24,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:24,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:31:24,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:31:24,699 INFO L87 Difference]: Start difference. First operand 1786 states and 3221 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 14:31:24,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:24,727 INFO L93 Difference]: Finished difference Result 2244 states and 3913 transitions. [2024-12-02 14:31:24,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:31:24,728 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 14:31:24,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:24,732 INFO L225 Difference]: With dead ends: 2244 [2024-12-02 14:31:24,732 INFO L226 Difference]: Without dead ends: 2003 [2024-12-02 14:31:24,733 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 14:31:24,733 INFO L435 NwaCegarLoop]: 1598 mSDtfsCounter, 1494 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1671 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 14:31:24,733 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1671 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:31:24,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2003 states. [2024-12-02 14:31:24,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2003 to 2001. [2024-12-02 14:31:24,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2001 states, 1999 states have (on average 1.7703851925962981) internal successors, (3539), 2000 states have internal predecessors, (3539), 0 states have call successors, (0), 0 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 14:31:24,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2001 states to 2001 states and 3539 transitions. [2024-12-02 14:31:24,779 INFO L78 Accepts]: Start accepts. Automaton has 2001 states and 3539 transitions. Word has length 59 [2024-12-02 14:31:24,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:24,779 INFO L471 AbstractCegarLoop]: Abstraction has 2001 states and 3539 transitions. [2024-12-02 14:31:24,780 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 14:31:24,780 INFO L276 IsEmpty]: Start isEmpty. Operand 2001 states and 3539 transitions. [2024-12-02 14:31:24,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-12-02 14:31:24,780 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:24,780 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:31:24,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 14:31:24,780 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:24,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:24,781 INFO L85 PathProgramCache]: Analyzing trace with hash -879656445, now seen corresponding path program 1 times [2024-12-02 14:31:24,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:24,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364297518] [2024-12-02 14:31:24,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:24,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:24,840 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 14:31:24,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:24,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364297518] [2024-12-02 14:31:24,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364297518] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:24,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:24,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:31:24,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084773815] [2024-12-02 14:31:24,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:24,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:31:24,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:24,841 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:31:24,841 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:31:24,841 INFO L87 Difference]: Start difference. First operand 2001 states and 3539 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 14:31:24,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:24,882 INFO L93 Difference]: Finished difference Result 2865 states and 4825 transitions. [2024-12-02 14:31:24,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:31:24,883 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 14:31:24,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:24,890 INFO L225 Difference]: With dead ends: 2865 [2024-12-02 14:31:24,890 INFO L226 Difference]: Without dead ends: 2409 [2024-12-02 14:31:24,891 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 14:31:24,892 INFO L435 NwaCegarLoop]: 1596 mSDtfsCounter, 1492 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 1673 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 14:31:24,892 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 1673 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:31:24,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2409 states. [2024-12-02 14:31:24,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2409 to 2407. [2024-12-02 14:31:24,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2407 states, 2405 states have (on average 1.716008316008316) internal successors, (4127), 2406 states have internal predecessors, (4127), 0 states have call successors, (0), 0 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 14:31:24,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2407 states to 2407 states and 4127 transitions. [2024-12-02 14:31:24,949 INFO L78 Accepts]: Start accepts. Automaton has 2407 states and 4127 transitions. Word has length 59 [2024-12-02 14:31:24,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:24,949 INFO L471 AbstractCegarLoop]: Abstraction has 2407 states and 4127 transitions. [2024-12-02 14:31:24,950 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 14:31:24,950 INFO L276 IsEmpty]: Start isEmpty. Operand 2407 states and 4127 transitions. [2024-12-02 14:31:24,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-12-02 14:31:24,950 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:24,950 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:31:24,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 14:31:24,950 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:24,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:24,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1199842051, now seen corresponding path program 1 times [2024-12-02 14:31:24,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:24,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808495616] [2024-12-02 14:31:24,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:24,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:24,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:25,008 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 14:31:25,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:25,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808495616] [2024-12-02 14:31:25,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808495616] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:25,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:25,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:31:25,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457376391] [2024-12-02 14:31:25,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:25,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:31:25,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:25,009 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:31:25,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:31:25,009 INFO L87 Difference]: Start difference. First operand 2407 states and 4127 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 14:31:25,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:25,055 INFO L93 Difference]: Finished difference Result 4035 states and 6505 transitions. [2024-12-02 14:31:25,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:31:25,055 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 14:31:25,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:25,065 INFO L225 Difference]: With dead ends: 4035 [2024-12-02 14:31:25,065 INFO L226 Difference]: Without dead ends: 3173 [2024-12-02 14:31:25,066 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 14:31:25,067 INFO L435 NwaCegarLoop]: 1594 mSDtfsCounter, 1490 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1675 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 14:31:25,067 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1675 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:31:25,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3173 states. [2024-12-02 14:31:25,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3173 to 3171. [2024-12-02 14:31:25,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3171 states, 3169 states have (on average 1.6431050804670242) internal successors, (5207), 3170 states have internal predecessors, (5207), 0 states have call successors, (0), 0 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 14:31:25,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3171 states to 3171 states and 5207 transitions. [2024-12-02 14:31:25,144 INFO L78 Accepts]: Start accepts. Automaton has 3171 states and 5207 transitions. Word has length 59 [2024-12-02 14:31:25,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:25,144 INFO L471 AbstractCegarLoop]: Abstraction has 3171 states and 5207 transitions. [2024-12-02 14:31:25,144 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 14:31:25,145 INFO L276 IsEmpty]: Start isEmpty. Operand 3171 states and 5207 transitions. [2024-12-02 14:31:25,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-12-02 14:31:25,145 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:25,145 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:31:25,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 14:31:25,145 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:25,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:25,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1314192381, now seen corresponding path program 1 times [2024-12-02 14:31:25,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:25,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604505202] [2024-12-02 14:31:25,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:25,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:25,200 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 14:31:25,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:25,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604505202] [2024-12-02 14:31:25,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604505202] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:25,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:25,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:31:25,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927864836] [2024-12-02 14:31:25,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:25,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:31:25,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:25,201 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:31:25,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:31:25,202 INFO L87 Difference]: Start difference. First operand 3171 states and 5207 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 14:31:25,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:25,269 INFO L93 Difference]: Finished difference Result 6231 states and 9577 transitions. [2024-12-02 14:31:25,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:31:25,269 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 14:31:25,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:25,284 INFO L225 Difference]: With dead ends: 6231 [2024-12-02 14:31:25,284 INFO L226 Difference]: Without dead ends: 4605 [2024-12-02 14:31:25,286 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 14:31:25,287 INFO L435 NwaCegarLoop]: 1592 mSDtfsCounter, 1488 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1677 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 14:31:25,287 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1677 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:31:25,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4605 states. [2024-12-02 14:31:25,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4605 to 4603. [2024-12-02 14:31:25,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4603 states, 4601 states have (on average 1.5594435992175615) internal successors, (7175), 4602 states have internal predecessors, (7175), 0 states have call successors, (0), 0 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 14:31:25,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4603 states to 4603 states and 7175 transitions. [2024-12-02 14:31:25,412 INFO L78 Accepts]: Start accepts. Automaton has 4603 states and 7175 transitions. Word has length 59 [2024-12-02 14:31:25,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:25,413 INFO L471 AbstractCegarLoop]: Abstraction has 4603 states and 7175 transitions. [2024-12-02 14:31:25,413 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 14:31:25,413 INFO L276 IsEmpty]: Start isEmpty. Operand 4603 states and 7175 transitions. [2024-12-02 14:31:25,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-12-02 14:31:25,415 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:25,415 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:31:25,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 14:31:25,415 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:25,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:25,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1793062525, now seen corresponding path program 1 times [2024-12-02 14:31:25,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:25,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155795818] [2024-12-02 14:31:25,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:25,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:25,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:25,614 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:31:25,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:25,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155795818] [2024-12-02 14:31:25,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155795818] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:25,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:25,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:31:25,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825350625] [2024-12-02 14:31:25,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:25,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:31:25,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:25,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:31:25,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:31:25,616 INFO L87 Difference]: Start difference. First operand 4603 states and 7175 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 14:31:25,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:25,914 INFO L93 Difference]: Finished difference Result 19671 states and 28445 transitions. [2024-12-02 14:31:25,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:31:25,914 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 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 79 [2024-12-02 14:31:25,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:25,952 INFO L225 Difference]: With dead ends: 19671 [2024-12-02 14:31:25,952 INFO L226 Difference]: Without dead ends: 17493 [2024-12-02 14:31:25,959 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-12-02 14:31:25,959 INFO L435 NwaCegarLoop]: 1609 mSDtfsCounter, 6314 mSDsluCounter, 2098 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6314 SdHoareTripleChecker+Valid, 3707 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:25,959 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6314 Valid, 3707 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:31:25,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17493 states. [2024-12-02 14:31:26,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17493 to 7227. [2024-12-02 14:31:26,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7227 states, 7225 states have (on average 1.5002076124567474) internal successors, (10839), 7226 states have internal predecessors, (10839), 0 states have call successors, (0), 0 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 14:31:26,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7227 states to 7227 states and 10839 transitions. [2024-12-02 14:31:26,279 INFO L78 Accepts]: Start accepts. Automaton has 7227 states and 10839 transitions. Word has length 79 [2024-12-02 14:31:26,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:26,279 INFO L471 AbstractCegarLoop]: Abstraction has 7227 states and 10839 transitions. [2024-12-02 14:31:26,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 14:31:26,280 INFO L276 IsEmpty]: Start isEmpty. Operand 7227 states and 10839 transitions. [2024-12-02 14:31:26,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-12-02 14:31:26,282 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:26,282 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:31:26,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 14:31:26,283 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:26,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:26,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1529206141, now seen corresponding path program 1 times [2024-12-02 14:31:26,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:26,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457115539] [2024-12-02 14:31:26,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:26,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:26,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:26,488 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 14:31:26,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:26,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457115539] [2024-12-02 14:31:26,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457115539] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:26,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:26,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:31:26,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24354722] [2024-12-02 14:31:26,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:26,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:31:26,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:26,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:31:26,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:31:26,491 INFO L87 Difference]: Start difference. First operand 7227 states and 10839 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 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 14:31:26,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:26,852 INFO L93 Difference]: Finished difference Result 22727 states and 32733 transitions. [2024-12-02 14:31:26,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:31:26,853 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 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 79 [2024-12-02 14:31:26,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:26,877 INFO L225 Difference]: With dead ends: 22727 [2024-12-02 14:31:26,878 INFO L226 Difference]: Without dead ends: 19669 [2024-12-02 14:31:26,882 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-12-02 14:31:26,882 INFO L435 NwaCegarLoop]: 1608 mSDtfsCounter, 6314 mSDsluCounter, 2087 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6314 SdHoareTripleChecker+Valid, 3695 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:26,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6314 Valid, 3695 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:31:26,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19669 states. [2024-12-02 14:31:27,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19669 to 11371. [2024-12-02 14:31:27,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11371 states, 11369 states have (on average 1.4614302049432668) internal successors, (16615), 11370 states have internal predecessors, (16615), 0 states have call successors, (0), 0 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 14:31:27,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11371 states to 11371 states and 16615 transitions. [2024-12-02 14:31:27,148 INFO L78 Accepts]: Start accepts. Automaton has 11371 states and 16615 transitions. Word has length 79 [2024-12-02 14:31:27,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:27,148 INFO L471 AbstractCegarLoop]: Abstraction has 11371 states and 16615 transitions. [2024-12-02 14:31:27,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 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 14:31:27,149 INFO L276 IsEmpty]: Start isEmpty. Operand 11371 states and 16615 transitions. [2024-12-02 14:31:27,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-12-02 14:31:27,152 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:27,152 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:31:27,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 14:31:27,152 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:27,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:27,153 INFO L85 PathProgramCache]: Analyzing trace with hash -290944125, now seen corresponding path program 1 times [2024-12-02 14:31:27,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:27,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15401662] [2024-12-02 14:31:27,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:27,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:27,305 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 14:31:27,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:27,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15401662] [2024-12-02 14:31:27,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15401662] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:27,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:27,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:31:27,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604490884] [2024-12-02 14:31:27,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:27,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:31:27,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:27,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:31:27,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:31:27,306 INFO L87 Difference]: Start difference. First operand 11371 states and 16615 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 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 14:31:27,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:27,836 INFO L93 Difference]: Finished difference Result 25783 states and 37005 transitions. [2024-12-02 14:31:27,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:31:27,836 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 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 79 [2024-12-02 14:31:27,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:27,869 INFO L225 Difference]: With dead ends: 25783 [2024-12-02 14:31:27,869 INFO L226 Difference]: Without dead ends: 22725 [2024-12-02 14:31:27,875 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-12-02 14:31:27,876 INFO L435 NwaCegarLoop]: 1606 mSDtfsCounter, 6337 mSDsluCounter, 2054 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6337 SdHoareTripleChecker+Valid, 3660 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:27,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6337 Valid, 3660 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:31:27,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22725 states. [2024-12-02 14:31:28,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22725 to 14427. [2024-12-02 14:31:28,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14427 states, 14425 states have (on average 1.4479722703639515) internal successors, (20887), 14426 states have internal predecessors, (20887), 0 states have call successors, (0), 0 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 14:31:28,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14427 states to 14427 states and 20887 transitions. [2024-12-02 14:31:28,324 INFO L78 Accepts]: Start accepts. Automaton has 14427 states and 20887 transitions. Word has length 79 [2024-12-02 14:31:28,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:28,325 INFO L471 AbstractCegarLoop]: Abstraction has 14427 states and 20887 transitions. [2024-12-02 14:31:28,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 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 14:31:28,325 INFO L276 IsEmpty]: Start isEmpty. Operand 14427 states and 20887 transitions. [2024-12-02 14:31:28,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-12-02 14:31:28,328 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:28,328 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:31:28,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 14:31:28,329 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:28,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:28,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1788554371, now seen corresponding path program 1 times [2024-12-02 14:31:28,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:28,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670244318] [2024-12-02 14:31:28,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:28,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:28,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:28,508 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 14:31:28,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:28,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670244318] [2024-12-02 14:31:28,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670244318] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:28,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:28,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:31:28,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088921096] [2024-12-02 14:31:28,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:28,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:31:28,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:28,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:31:28,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:31:28,510 INFO L87 Difference]: Start difference. First operand 14427 states and 20887 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 14:31:29,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:29,097 INFO L93 Difference]: Finished difference Result 28839 states and 41277 transitions. [2024-12-02 14:31:29,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:31:29,098 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 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 79 [2024-12-02 14:31:29,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:29,123 INFO L225 Difference]: With dead ends: 28839 [2024-12-02 14:31:29,123 INFO L226 Difference]: Without dead ends: 25781 [2024-12-02 14:31:29,129 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-12-02 14:31:29,130 INFO L435 NwaCegarLoop]: 1604 mSDtfsCounter, 6376 mSDsluCounter, 2048 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6376 SdHoareTripleChecker+Valid, 3652 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:29,130 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6376 Valid, 3652 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:31:29,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25781 states. [2024-12-02 14:31:29,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25781 to 17483. [2024-12-02 14:31:29,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17483 states, 17481 states have (on average 1.4392197242720668) internal successors, (25159), 17482 states have internal predecessors, (25159), 0 states have call successors, (0), 0 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 14:31:29,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17483 states to 17483 states and 25159 transitions. [2024-12-02 14:31:29,527 INFO L78 Accepts]: Start accepts. Automaton has 17483 states and 25159 transitions. Word has length 79 [2024-12-02 14:31:29,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:29,527 INFO L471 AbstractCegarLoop]: Abstraction has 17483 states and 25159 transitions. [2024-12-02 14:31:29,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 14:31:29,528 INFO L276 IsEmpty]: Start isEmpty. Operand 17483 states and 25159 transitions. [2024-12-02 14:31:29,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-12-02 14:31:29,530 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:29,530 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:31:29,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 14:31:29,530 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:29,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:29,531 INFO L85 PathProgramCache]: Analyzing trace with hash -725480061, now seen corresponding path program 1 times [2024-12-02 14:31:29,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:29,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610734411] [2024-12-02 14:31:29,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:29,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:29,643 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 14:31:29,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:29,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610734411] [2024-12-02 14:31:29,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610734411] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:29,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:29,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:31:29,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392868196] [2024-12-02 14:31:29,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:29,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:31:29,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:29,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:31:29,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:31:29,644 INFO L87 Difference]: Start difference. First operand 17483 states and 25159 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 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 14:31:30,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:30,371 INFO L93 Difference]: Finished difference Result 31895 states and 45549 transitions. [2024-12-02 14:31:30,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:31:30,372 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 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 79 [2024-12-02 14:31:30,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:30,404 INFO L225 Difference]: With dead ends: 31895 [2024-12-02 14:31:30,404 INFO L226 Difference]: Without dead ends: 28837 [2024-12-02 14:31:30,410 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-12-02 14:31:30,411 INFO L435 NwaCegarLoop]: 1603 mSDtfsCounter, 6334 mSDsluCounter, 2085 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6334 SdHoareTripleChecker+Valid, 3688 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:30,411 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6334 Valid, 3688 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:31:30,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28837 states. [2024-12-02 14:31:30,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28837 to 20539. [2024-12-02 14:31:30,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20539 states, 20537 states have (on average 1.433072016360715) internal successors, (29431), 20538 states have internal predecessors, (29431), 0 states have call successors, (0), 0 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 14:31:30,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20539 states to 20539 states and 29431 transitions. [2024-12-02 14:31:30,844 INFO L78 Accepts]: Start accepts. Automaton has 20539 states and 29431 transitions. Word has length 79 [2024-12-02 14:31:30,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:30,844 INFO L471 AbstractCegarLoop]: Abstraction has 20539 states and 29431 transitions. [2024-12-02 14:31:30,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 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 14:31:30,844 INFO L276 IsEmpty]: Start isEmpty. Operand 20539 states and 29431 transitions. [2024-12-02 14:31:30,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-12-02 14:31:30,846 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:30,846 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:31:30,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 14:31:30,846 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:30,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:30,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1265022664, now seen corresponding path program 1 times [2024-12-02 14:31:30,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:30,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932399958] [2024-12-02 14:31:30,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:30,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:30,909 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:31:30,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:30,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932399958] [2024-12-02 14:31:30,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932399958] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:30,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:30,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:31:30,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234267160] [2024-12-02 14:31:30,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:30,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:31:30,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:30,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:31:30,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:31:30,911 INFO L87 Difference]: Start difference. First operand 20539 states and 29431 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 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 14:31:31,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:31,377 INFO L93 Difference]: Finished difference Result 39535 states and 56009 transitions. [2024-12-02 14:31:31,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:31:31,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2024-12-02 14:31:31,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:31,394 INFO L225 Difference]: With dead ends: 39535 [2024-12-02 14:31:31,394 INFO L226 Difference]: Without dead ends: 20541 [2024-12-02 14:31:31,405 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 14:31:31,406 INFO L435 NwaCegarLoop]: 1579 mSDtfsCounter, 45 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3111 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 14:31:31,406 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3111 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:31:31,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20541 states. [2024-12-02 14:31:31,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20541 to 20539. [2024-12-02 14:31:31,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20539 states, 20537 states have (on average 1.4186590056970345) internal successors, (29135), 20538 states have internal predecessors, (29135), 0 states have call successors, (0), 0 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 14:31:31,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20539 states to 20539 states and 29135 transitions. [2024-12-02 14:31:31,965 INFO L78 Accepts]: Start accepts. Automaton has 20539 states and 29135 transitions. Word has length 80 [2024-12-02 14:31:31,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:31,965 INFO L471 AbstractCegarLoop]: Abstraction has 20539 states and 29135 transitions. [2024-12-02 14:31:31,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 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 14:31:31,965 INFO L276 IsEmpty]: Start isEmpty. Operand 20539 states and 29135 transitions. [2024-12-02 14:31:31,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-12-02 14:31:31,967 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:31,967 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:31:31,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 14:31:31,967 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:31,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:31,968 INFO L85 PathProgramCache]: Analyzing trace with hash -2037489509, now seen corresponding path program 1 times [2024-12-02 14:31:31,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:31,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930663800] [2024-12-02 14:31:31,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:31,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:32,057 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:31:32,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:32,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930663800] [2024-12-02 14:31:32,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930663800] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:32,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:32,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:31:32,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152214188] [2024-12-02 14:31:32,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:32,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:31:32,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:32,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:31:32,058 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:31:32,059 INFO L87 Difference]: Start difference. First operand 20539 states and 29135 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 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 14:31:32,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:32,252 INFO L93 Difference]: Finished difference Result 27635 states and 39038 transitions. [2024-12-02 14:31:32,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:31:32,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2024-12-02 14:31:32,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:32,260 INFO L225 Difference]: With dead ends: 27635 [2024-12-02 14:31:32,260 INFO L226 Difference]: Without dead ends: 8641 [2024-12-02 14:31:32,268 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 14:31:32,268 INFO L435 NwaCegarLoop]: 1577 mSDtfsCounter, 39 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3108 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 14:31:32,269 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3108 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:31:32,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8641 states. [2024-12-02 14:31:32,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8641 to 8632. [2024-12-02 14:31:32,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8632 states, 8630 states have (on average 1.4651216685979143) internal successors, (12644), 8631 states have internal predecessors, (12644), 0 states have call successors, (0), 0 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 14:31:32,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8632 states to 8632 states and 12644 transitions. [2024-12-02 14:31:32,471 INFO L78 Accepts]: Start accepts. Automaton has 8632 states and 12644 transitions. Word has length 81 [2024-12-02 14:31:32,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:32,471 INFO L471 AbstractCegarLoop]: Abstraction has 8632 states and 12644 transitions. [2024-12-02 14:31:32,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 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 14:31:32,471 INFO L276 IsEmpty]: Start isEmpty. Operand 8632 states and 12644 transitions. [2024-12-02 14:31:32,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-12-02 14:31:32,472 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:32,472 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:31:32,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 14:31:32,472 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:32,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:32,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1483523354, now seen corresponding path program 1 times [2024-12-02 14:31:32,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:32,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066393972] [2024-12-02 14:31:32,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:32,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:32,561 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:31:32,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:32,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066393972] [2024-12-02 14:31:32,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066393972] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:32,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:32,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:31:32,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202642648] [2024-12-02 14:31:32,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:32,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:31:32,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:32,562 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:31:32,562 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:31:32,562 INFO L87 Difference]: Start difference. First operand 8632 states and 12644 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 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 14:31:32,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:32,669 INFO L93 Difference]: Finished difference Result 12172 states and 17534 transitions. [2024-12-02 14:31:32,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:31:32,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2024-12-02 14:31:32,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:32,676 INFO L225 Difference]: With dead ends: 12172 [2024-12-02 14:31:32,676 INFO L226 Difference]: Without dead ends: 5098 [2024-12-02 14:31:32,682 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 14:31:32,682 INFO L435 NwaCegarLoop]: 1571 mSDtfsCounter, 41 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3087 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 14:31:32,682 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3087 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:31:32,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5098 states. [2024-12-02 14:31:32,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5098 to 5096. [2024-12-02 14:31:32,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5096 states, 5094 states have (on average 1.5123674911660778) internal successors, (7704), 5095 states have internal predecessors, (7704), 0 states have call successors, (0), 0 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 14:31:32,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5096 states to 5096 states and 7704 transitions. [2024-12-02 14:31:32,802 INFO L78 Accepts]: Start accepts. Automaton has 5096 states and 7704 transitions. Word has length 82 [2024-12-02 14:31:32,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:32,803 INFO L471 AbstractCegarLoop]: Abstraction has 5096 states and 7704 transitions. [2024-12-02 14:31:32,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 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 14:31:32,803 INFO L276 IsEmpty]: Start isEmpty. Operand 5096 states and 7704 transitions. [2024-12-02 14:31:32,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-12-02 14:31:32,804 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:32,804 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:31:32,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 14:31:32,804 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:32,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:32,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1068531220, now seen corresponding path program 1 times [2024-12-02 14:31:32,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:32,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905686050] [2024-12-02 14:31:32,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:32,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:32,894 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:31:32,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:32,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905686050] [2024-12-02 14:31:32,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905686050] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:32,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:32,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:31:32,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238909026] [2024-12-02 14:31:32,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:32,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:31:32,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:32,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:31:32,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:31:32,895 INFO L87 Difference]: Start difference. First operand 5096 states and 7704 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 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 14:31:32,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:32,948 INFO L93 Difference]: Finished difference Result 6868 states and 10124 transitions. [2024-12-02 14:31:32,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:31:32,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2024-12-02 14:31:32,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:32,952 INFO L225 Difference]: With dead ends: 6868 [2024-12-02 14:31:32,952 INFO L226 Difference]: Without dead ends: 3330 [2024-12-02 14:31:32,955 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 14:31:32,955 INFO L435 NwaCegarLoop]: 1564 mSDtfsCounter, 38 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 3072 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 14:31:32,956 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 3072 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:31:32,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3330 states. [2024-12-02 14:31:33,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3330 to 3328. [2024-12-02 14:31:33,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3328 states, 3326 states have (on average 1.581479254359591) internal successors, (5260), 3327 states have internal predecessors, (5260), 0 states have call successors, (0), 0 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 14:31:33,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3328 states to 3328 states and 5260 transitions. [2024-12-02 14:31:33,006 INFO L78 Accepts]: Start accepts. Automaton has 3328 states and 5260 transitions. Word has length 84 [2024-12-02 14:31:33,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:33,007 INFO L471 AbstractCegarLoop]: Abstraction has 3328 states and 5260 transitions. [2024-12-02 14:31:33,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 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 14:31:33,007 INFO L276 IsEmpty]: Start isEmpty. Operand 3328 states and 5260 transitions. [2024-12-02 14:31:33,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-12-02 14:31:33,007 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:33,007 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, 1, 1, 1, 1, 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 14:31:33,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 14:31:33,008 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:33,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:33,008 INFO L85 PathProgramCache]: Analyzing trace with hash -2111828674, now seen corresponding path program 1 times [2024-12-02 14:31:33,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:33,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456395370] [2024-12-02 14:31:33,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:33,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:33,100 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:31:33,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:33,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456395370] [2024-12-02 14:31:33,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456395370] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:33,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:33,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:31:33,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605278588] [2024-12-02 14:31:33,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:33,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:31:33,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:33,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:31:33,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:31:33,102 INFO L87 Difference]: Start difference. First operand 3328 states and 5260 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 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 14:31:33,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:33,145 INFO L93 Difference]: Finished difference Result 4216 states and 6458 transitions. [2024-12-02 14:31:33,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:31:33,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2024-12-02 14:31:33,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:33,150 INFO L225 Difference]: With dead ends: 4216 [2024-12-02 14:31:33,150 INFO L226 Difference]: Without dead ends: 2446 [2024-12-02 14:31:33,151 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 14:31:33,153 INFO L435 NwaCegarLoop]: 1557 mSDtfsCounter, 35 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3057 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 14:31:33,153 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3057 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:31:33,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2446 states. [2024-12-02 14:31:33,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2446 to 2444. [2024-12-02 14:31:33,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2444 states, 2442 states have (on average 1.658886158886159) internal successors, (4051), 2443 states have internal predecessors, (4051), 0 states have call successors, (0), 0 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 14:31:33,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2444 states to 2444 states and 4051 transitions. [2024-12-02 14:31:33,203 INFO L78 Accepts]: Start accepts. Automaton has 2444 states and 4051 transitions. Word has length 86 [2024-12-02 14:31:33,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:33,203 INFO L471 AbstractCegarLoop]: Abstraction has 2444 states and 4051 transitions. [2024-12-02 14:31:33,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 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 14:31:33,204 INFO L276 IsEmpty]: Start isEmpty. Operand 2444 states and 4051 transitions. [2024-12-02 14:31:33,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-12-02 14:31:33,204 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:33,204 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, 1, 1, 1, 1, 1, 1, 1, 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 14:31:33,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 14:31:33,205 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:33,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:33,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1630042352, now seen corresponding path program 1 times [2024-12-02 14:31:33,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:33,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911670516] [2024-12-02 14:31:33,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:33,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:33,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:33,672 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:31:33,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:33,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911670516] [2024-12-02 14:31:33,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911670516] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:31:33,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382807736] [2024-12-02 14:31:33,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:33,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:31:33,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:31:33,675 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:31:33,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 14:31:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:33,821 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 14:31:33,826 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:31:34,354 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:31:34,355 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:31:35,313 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:31:35,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382807736] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:31:35,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:31:35,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-12-02 14:31:35,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062854585] [2024-12-02 14:31:35,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:31:35,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-12-02 14:31:35,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:35,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-12-02 14:31:35,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2024-12-02 14:31:35,315 INFO L87 Difference]: Start difference. First operand 2444 states and 4051 transitions. Second operand has 25 states, 25 states have (on average 8.72) internal successors, (218), 24 states have internal predecessors, (218), 0 states have call successors, (0), 0 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 14:31:37,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:37,067 INFO L93 Difference]: Finished difference Result 6150 states and 9024 transitions. [2024-12-02 14:31:37,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 14:31:37,069 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.72) internal successors, (218), 24 states have internal predecessors, (218), 0 states have call successors, (0), 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 88 [2024-12-02 14:31:37,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:37,075 INFO L225 Difference]: With dead ends: 6150 [2024-12-02 14:31:37,075 INFO L226 Difference]: Without dead ends: 5264 [2024-12-02 14:31:37,078 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=576, Invalid=2180, Unknown=0, NotChecked=0, Total=2756 [2024-12-02 14:31:37,078 INFO L435 NwaCegarLoop]: 1524 mSDtfsCounter, 24988 mSDsluCounter, 5263 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24988 SdHoareTripleChecker+Valid, 6787 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:37,079 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24988 Valid, 6787 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 14:31:37,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5264 states. [2024-12-02 14:31:37,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5264 to 5200. [2024-12-02 14:31:37,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5200 states, 5198 states have (on average 1.4721046556367834) internal successors, (7652), 5199 states have internal predecessors, (7652), 0 states have call successors, (0), 0 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 14:31:37,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5200 states to 5200 states and 7652 transitions. [2024-12-02 14:31:37,218 INFO L78 Accepts]: Start accepts. Automaton has 5200 states and 7652 transitions. Word has length 88 [2024-12-02 14:31:37,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:37,218 INFO L471 AbstractCegarLoop]: Abstraction has 5200 states and 7652 transitions. [2024-12-02 14:31:37,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.72) internal successors, (218), 24 states have internal predecessors, (218), 0 states have call successors, (0), 0 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 14:31:37,218 INFO L276 IsEmpty]: Start isEmpty. Operand 5200 states and 7652 transitions. [2024-12-02 14:31:37,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-12-02 14:31:37,219 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:37,219 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, 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 14:31:37,230 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 14:31:37,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:31:37,420 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:37,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:37,421 INFO L85 PathProgramCache]: Analyzing trace with hash 861674437, now seen corresponding path program 1 times [2024-12-02 14:31:37,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:37,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852812465] [2024-12-02 14:31:37,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:37,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:37,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:37,928 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:31:37,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:37,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852812465] [2024-12-02 14:31:37,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852812465] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:31:37,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78651464] [2024-12-02 14:31:37,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:37,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:31:37,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:31:37,931 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:31:37,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 14:31:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:38,073 INFO L256 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 14:31:38,076 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:31:38,501 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:31:38,502 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:31:39,533 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:31:39,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78651464] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:31:39,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:31:39,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-12-02 14:31:39,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323547650] [2024-12-02 14:31:39,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:31:39,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 14:31:39,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:39,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 14:31:39,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2024-12-02 14:31:39,535 INFO L87 Difference]: Start difference. First operand 5200 states and 7652 transitions. Second operand has 21 states, 21 states have (on average 9.857142857142858) internal successors, (207), 20 states have internal predecessors, (207), 0 states have call successors, (0), 0 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 14:31:40,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:40,042 INFO L93 Difference]: Finished difference Result 12798 states and 17691 transitions. [2024-12-02 14:31:40,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 14:31:40,043 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 9.857142857142858) internal successors, (207), 20 states have internal predecessors, (207), 0 states have call successors, (0), 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 89 [2024-12-02 14:31:40,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:40,049 INFO L225 Difference]: With dead ends: 12798 [2024-12-02 14:31:40,049 INFO L226 Difference]: Without dead ends: 9156 [2024-12-02 14:31:40,052 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=215, Invalid=597, Unknown=0, NotChecked=0, Total=812 [2024-12-02 14:31:40,052 INFO L435 NwaCegarLoop]: 1513 mSDtfsCounter, 10637 mSDsluCounter, 4900 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10637 SdHoareTripleChecker+Valid, 6413 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:40,052 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10637 Valid, 6413 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 14:31:40,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9156 states. [2024-12-02 14:31:40,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9156 to 9048. [2024-12-02 14:31:40,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9048 states, 9046 states have (on average 1.3919964625248729) internal successors, (12592), 9047 states have internal predecessors, (12592), 0 states have call successors, (0), 0 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 14:31:40,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9048 states to 9048 states and 12592 transitions. [2024-12-02 14:31:40,219 INFO L78 Accepts]: Start accepts. Automaton has 9048 states and 12592 transitions. Word has length 89 [2024-12-02 14:31:40,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:40,220 INFO L471 AbstractCegarLoop]: Abstraction has 9048 states and 12592 transitions. [2024-12-02 14:31:40,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.857142857142858) internal successors, (207), 20 states have internal predecessors, (207), 0 states have call successors, (0), 0 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 14:31:40,220 INFO L276 IsEmpty]: Start isEmpty. Operand 9048 states and 12592 transitions. [2024-12-02 14:31:40,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-12-02 14:31:40,221 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:40,221 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, 1, 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 14:31:40,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 14:31:40,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-12-02 14:31:40,421 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:40,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:40,422 INFO L85 PathProgramCache]: Analyzing trace with hash 713310802, now seen corresponding path program 1 times [2024-12-02 14:31:40,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:40,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83409627] [2024-12-02 14:31:40,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:40,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:40,757 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:31:40,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:40,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83409627] [2024-12-02 14:31:40,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83409627] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:31:40,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052507538] [2024-12-02 14:31:40,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:40,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:31:40,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:31:40,759 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:31:40,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 14:31:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:40,874 INFO L256 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 14:31:40,876 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:31:41,627 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:31:41,627 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:31:43,061 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:31:43,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052507538] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:31:43,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:31:43,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 28 [2024-12-02 14:31:43,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424932642] [2024-12-02 14:31:43,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:31:43,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 14:31:43,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:43,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 14:31:43,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2024-12-02 14:31:43,062 INFO L87 Difference]: Start difference. First operand 9048 states and 12592 transitions. Second operand has 28 states, 28 states have (on average 9.071428571428571) internal successors, (254), 28 states have internal predecessors, (254), 0 states have call successors, (0), 0 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 14:31:45,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:45,562 INFO L93 Difference]: Finished difference Result 23414 states and 31359 transitions. [2024-12-02 14:31:45,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-12-02 14:31:45,563 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.071428571428571) internal successors, (254), 28 states have internal predecessors, (254), 0 states have call successors, (0), 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 90 [2024-12-02 14:31:45,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:45,574 INFO L225 Difference]: With dead ends: 23414 [2024-12-02 14:31:45,574 INFO L226 Difference]: Without dead ends: 15924 [2024-12-02 14:31:45,578 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=758, Invalid=3024, Unknown=0, NotChecked=0, Total=3782 [2024-12-02 14:31:45,578 INFO L435 NwaCegarLoop]: 1505 mSDtfsCounter, 15361 mSDsluCounter, 10691 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15361 SdHoareTripleChecker+Valid, 12196 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:45,579 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15361 Valid, 12196 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 14:31:45,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15924 states. [2024-12-02 14:31:45,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15924 to 15912. [2024-12-02 14:31:45,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15912 states, 15910 states have (on average 1.3362664990571966) internal successors, (21260), 15911 states have internal predecessors, (21260), 0 states have call successors, (0), 0 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 14:31:45,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15912 states to 15912 states and 21260 transitions. [2024-12-02 14:31:45,969 INFO L78 Accepts]: Start accepts. Automaton has 15912 states and 21260 transitions. Word has length 90 [2024-12-02 14:31:45,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:45,970 INFO L471 AbstractCegarLoop]: Abstraction has 15912 states and 21260 transitions. [2024-12-02 14:31:45,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.071428571428571) internal successors, (254), 28 states have internal predecessors, (254), 0 states have call successors, (0), 0 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 14:31:45,970 INFO L276 IsEmpty]: Start isEmpty. Operand 15912 states and 21260 transitions. [2024-12-02 14:31:45,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-12-02 14:31:45,971 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:45,971 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, 1, 1, 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 14:31:45,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 14:31:46,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-02 14:31:46,172 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:46,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:46,173 INFO L85 PathProgramCache]: Analyzing trace with hash 157562109, now seen corresponding path program 1 times [2024-12-02 14:31:46,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:46,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494328678] [2024-12-02 14:31:46,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:46,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:46,418 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:31:46,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:46,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494328678] [2024-12-02 14:31:46,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494328678] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:31:46,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974436105] [2024-12-02 14:31:46,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:46,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:31:46,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:31:46,420 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:31:46,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 14:31:46,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:46,530 INFO L256 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-02 14:31:46,532 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:31:47,165 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:31:47,166 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:31:48,115 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:31:48,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974436105] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:31:48,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:31:48,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2024-12-02 14:31:48,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686461801] [2024-12-02 14:31:48,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:31:48,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-12-02 14:31:48,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:48,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-12-02 14:31:48,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2024-12-02 14:31:48,117 INFO L87 Difference]: Start difference. First operand 15912 states and 21260 transitions. Second operand has 32 states, 32 states have (on average 7.40625) internal successors, (237), 32 states have internal predecessors, (237), 0 states have call successors, (0), 0 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 14:31:52,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:52,483 INFO L93 Difference]: Finished difference Result 65286 states and 84875 transitions. [2024-12-02 14:31:52,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-12-02 14:31:52,483 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.40625) internal successors, (237), 32 states have internal predecessors, (237), 0 states have call successors, (0), 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 91 [2024-12-02 14:31:52,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:52,514 INFO L225 Difference]: With dead ends: 65286 [2024-12-02 14:31:52,515 INFO L226 Difference]: Without dead ends: 50932 [2024-12-02 14:31:52,523 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2150 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1452, Invalid=6738, Unknown=0, NotChecked=0, Total=8190 [2024-12-02 14:31:52,523 INFO L435 NwaCegarLoop]: 1555 mSDtfsCounter, 16076 mSDsluCounter, 14478 mSDsCounter, 0 mSdLazyCounter, 1595 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16076 SdHoareTripleChecker+Valid, 16033 SdHoareTripleChecker+Invalid, 1640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:52,524 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16076 Valid, 16033 Invalid, 1640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1595 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 14:31:52,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50932 states. [2024-12-02 14:31:53,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50932 to 28824. [2024-12-02 14:31:53,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28824 states, 28822 states have (on average 1.2969259593366178) internal successors, (37380), 28823 states have internal predecessors, (37380), 0 states have call successors, (0), 0 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 14:31:53,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28824 states to 28824 states and 37380 transitions. [2024-12-02 14:31:53,393 INFO L78 Accepts]: Start accepts. Automaton has 28824 states and 37380 transitions. Word has length 91 [2024-12-02 14:31:53,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:53,394 INFO L471 AbstractCegarLoop]: Abstraction has 28824 states and 37380 transitions. [2024-12-02 14:31:53,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.40625) internal successors, (237), 32 states have internal predecessors, (237), 0 states have call successors, (0), 0 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 14:31:53,394 INFO L276 IsEmpty]: Start isEmpty. Operand 28824 states and 37380 transitions. [2024-12-02 14:31:53,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-12-02 14:31:53,396 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:53,396 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, 1, 1, 1, 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 14:31:53,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 14:31:53,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-02 14:31:53,597 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:53,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:53,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1785072166, now seen corresponding path program 1 times [2024-12-02 14:31:53,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:53,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573751839] [2024-12-02 14:31:53,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:53,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:53,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:54,731 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:31:54,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:54,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573751839] [2024-12-02 14:31:54,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573751839] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:31:54,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766277508] [2024-12-02 14:31:54,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:54,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:31:54,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:31:54,733 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:31:54,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 14:31:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:54,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 14:31:54,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:31:55,551 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:31:55,551 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:31:56,267 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:31:56,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766277508] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:31:56,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:31:56,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 28 [2024-12-02 14:31:56,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050650559] [2024-12-02 14:31:56,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:31:56,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 14:31:56,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:56,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 14:31:56,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2024-12-02 14:31:56,268 INFO L87 Difference]: Start difference. First operand 28824 states and 37380 transitions. Second operand has 28 states, 28 states have (on average 8.285714285714286) internal successors, (232), 28 states have internal predecessors, (232), 0 states have call successors, (0), 0 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 14:31:58,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:58,017 INFO L93 Difference]: Finished difference Result 36542 states and 47431 transitions. [2024-12-02 14:31:58,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 14:31:58,017 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 8.285714285714286) internal successors, (232), 28 states have internal predecessors, (232), 0 states have call successors, (0), 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 92 [2024-12-02 14:31:58,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:58,036 INFO L225 Difference]: With dead ends: 36542 [2024-12-02 14:31:58,036 INFO L226 Difference]: Without dead ends: 26556 [2024-12-02 14:31:58,044 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=343, Invalid=1297, Unknown=0, NotChecked=0, Total=1640 [2024-12-02 14:31:58,045 INFO L435 NwaCegarLoop]: 1519 mSDtfsCounter, 14195 mSDsluCounter, 14920 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14195 SdHoareTripleChecker+Valid, 16439 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:58,045 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14195 Valid, 16439 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 14:31:58,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26556 states. [2024-12-02 14:31:58,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26556 to 26552. [2024-12-02 14:31:58,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26552 states, 26550 states have (on average 1.2982297551789077) internal successors, (34468), 26551 states have internal predecessors, (34468), 0 states have call successors, (0), 0 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 14:31:58,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26552 states to 26552 states and 34468 transitions. [2024-12-02 14:31:58,861 INFO L78 Accepts]: Start accepts. Automaton has 26552 states and 34468 transitions. Word has length 92 [2024-12-02 14:31:58,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:58,861 INFO L471 AbstractCegarLoop]: Abstraction has 26552 states and 34468 transitions. [2024-12-02 14:31:58,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 8.285714285714286) internal successors, (232), 28 states have internal predecessors, (232), 0 states have call successors, (0), 0 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 14:31:58,861 INFO L276 IsEmpty]: Start isEmpty. Operand 26552 states and 34468 transitions. [2024-12-02 14:31:58,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-12-02 14:31:58,862 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:58,862 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, 1, 1, 1, 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 14:31:58,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 14:31:59,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 14:31:59,063 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:59,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:59,063 INFO L85 PathProgramCache]: Analyzing trace with hash -54854566, now seen corresponding path program 1 times [2024-12-02 14:31:59,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:59,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487828684] [2024-12-02 14:31:59,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:59,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:59,863 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:31:59,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:59,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487828684] [2024-12-02 14:31:59,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487828684] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:31:59,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813755148] [2024-12-02 14:31:59,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:59,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:31:59,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:31:59,866 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:31:59,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 14:32:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:32:00,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-12-02 14:32:00,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:32:03,490 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:32:03,490 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:32:07,270 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:32:07,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813755148] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:32:07,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:32:07,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 26, 20] total 54 [2024-12-02 14:32:07,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58344414] [2024-12-02 14:32:07,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:32:07,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-12-02 14:32:07,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:32:07,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-12-02 14:32:07,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=2495, Unknown=0, NotChecked=0, Total=2862 [2024-12-02 14:32:07,272 INFO L87 Difference]: Start difference. First operand 26552 states and 34468 transitions. Second operand has 54 states, 54 states have (on average 4.814814814814815) internal successors, (260), 54 states have internal predecessors, (260), 0 states have call successors, (0), 0 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 14:32:32,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:32:32,283 INFO L93 Difference]: Finished difference Result 48942 states and 63031 transitions. [2024-12-02 14:32:32,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2024-12-02 14:32:32,284 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 4.814814814814815) internal successors, (260), 54 states have internal predecessors, (260), 0 states have call successors, (0), 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 92 [2024-12-02 14:32:32,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:32:32,305 INFO L225 Difference]: With dead ends: 48942 [2024-12-02 14:32:32,305 INFO L226 Difference]: Without dead ends: 38828 [2024-12-02 14:32:32,312 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8516 ImplicationChecksByTransitivity, 22.8s TimeCoverageRelationStatistics Valid=5154, Invalid=22568, Unknown=0, NotChecked=0, Total=27722 [2024-12-02 14:32:32,312 INFO L435 NwaCegarLoop]: 1590 mSDtfsCounter, 24284 mSDsluCounter, 27510 mSDsCounter, 0 mSdLazyCounter, 4041 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24284 SdHoareTripleChecker+Valid, 29100 SdHoareTripleChecker+Invalid, 4149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 4041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:32:32,313 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24284 Valid, 29100 Invalid, 4149 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [108 Valid, 4041 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-12-02 14:32:32,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38828 states. [2024-12-02 14:32:33,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38828 to 23672. [2024-12-02 14:32:33,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23672 states, 23670 states have (on average 1.298943810730883) internal successors, (30746), 23671 states have internal predecessors, (30746), 0 states have call successors, (0), 0 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 14:32:33,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23672 states to 23672 states and 30746 transitions. [2024-12-02 14:32:33,235 INFO L78 Accepts]: Start accepts. Automaton has 23672 states and 30746 transitions. Word has length 92 [2024-12-02 14:32:33,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:32:33,236 INFO L471 AbstractCegarLoop]: Abstraction has 23672 states and 30746 transitions. [2024-12-02 14:32:33,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 4.814814814814815) internal successors, (260), 54 states have internal predecessors, (260), 0 states have call successors, (0), 0 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 14:32:33,236 INFO L276 IsEmpty]: Start isEmpty. Operand 23672 states and 30746 transitions. [2024-12-02 14:32:33,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-12-02 14:32:33,237 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:32:33,237 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:32:33,247 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 14:32:33,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 14:32:33,438 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:32:33,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:32:33,439 INFO L85 PathProgramCache]: Analyzing trace with hash 222504259, now seen corresponding path program 1 times [2024-12-02 14:32:33,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:32:33,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243412039] [2024-12-02 14:32:33,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:32:33,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:32:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:32:33,611 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:32:33,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:32:33,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243412039] [2024-12-02 14:32:33,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243412039] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:32:33,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186920873] [2024-12-02 14:32:33,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:32:33,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:32:33,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:32:33,613 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:32:33,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 14:32:33,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:32:33,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 14:32:33,756 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:32:33,842 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:32:33,842 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:32:34,055 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:32:34,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186920873] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:32:34,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:32:34,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2024-12-02 14:32:34,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935991471] [2024-12-02 14:32:34,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:32:34,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 14:32:34,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:32:34,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 14:32:34,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:32:34,057 INFO L87 Difference]: Start difference. First operand 23672 states and 30746 transitions. Second operand has 9 states, 9 states have (on average 25.444444444444443) internal successors, (229), 9 states have internal predecessors, (229), 0 states have call successors, (0), 0 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 14:32:35,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:32:35,680 INFO L93 Difference]: Finished difference Result 60340 states and 75919 transitions. [2024-12-02 14:32:35,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:32:35,681 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 25.444444444444443) internal successors, (229), 9 states have internal predecessors, (229), 0 states have call successors, (0), 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 93 [2024-12-02 14:32:35,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:32:35,708 INFO L225 Difference]: With dead ends: 60340 [2024-12-02 14:32:35,708 INFO L226 Difference]: Without dead ends: 38226 [2024-12-02 14:32:35,716 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:32:35,717 INFO L435 NwaCegarLoop]: 1539 mSDtfsCounter, 3005 mSDsluCounter, 3273 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3005 SdHoareTripleChecker+Valid, 4812 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:32:35,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3005 Valid, 4812 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:32:35,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38226 states. [2024-12-02 14:32:37,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38226 to 36330. [2024-12-02 14:32:37,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36330 states, 36328 states have (on average 1.2393195331424796) internal successors, (45022), 36329 states have internal predecessors, (45022), 0 states have call successors, (0), 0 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 14:32:37,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36330 states to 36330 states and 45022 transitions. [2024-12-02 14:32:37,245 INFO L78 Accepts]: Start accepts. Automaton has 36330 states and 45022 transitions. Word has length 93 [2024-12-02 14:32:37,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:32:37,245 INFO L471 AbstractCegarLoop]: Abstraction has 36330 states and 45022 transitions. [2024-12-02 14:32:37,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.444444444444443) internal successors, (229), 9 states have internal predecessors, (229), 0 states have call successors, (0), 0 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 14:32:37,245 INFO L276 IsEmpty]: Start isEmpty. Operand 36330 states and 45022 transitions. [2024-12-02 14:32:37,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-12-02 14:32:37,246 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:32:37,246 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:32:37,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 14:32:37,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 14:32:37,447 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:32:37,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:32:37,447 INFO L85 PathProgramCache]: Analyzing trace with hash 309781839, now seen corresponding path program 1 times [2024-12-02 14:32:37,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:32:37,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811499617] [2024-12-02 14:32:37,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:32:37,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:32:37,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:32:39,804 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:32:39,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:32:39,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811499617] [2024-12-02 14:32:39,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811499617] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:32:39,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288500550] [2024-12-02 14:32:39,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:32:39,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:32:39,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:32:39,807 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:32:39,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 14:32:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:32:39,928 INFO L256 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-12-02 14:32:39,930 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:32:47,661 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:32:47,661 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:32:58,860 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:32:58,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288500550] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:32:58,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:32:58,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 35, 34] total 96 [2024-12-02 14:32:58,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383954042] [2024-12-02 14:32:58,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:32:58,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-12-02 14:32:58,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:32:58,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-12-02 14:32:58,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=841, Invalid=8279, Unknown=0, NotChecked=0, Total=9120 [2024-12-02 14:32:58,862 INFO L87 Difference]: Start difference. First operand 36330 states and 45022 transitions. Second operand has 96 states, 96 states have (on average 2.6979166666666665) internal successors, (259), 96 states have internal predecessors, (259), 0 states have call successors, (0), 0 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 14:38:54,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:38:54,325 INFO L93 Difference]: Finished difference Result 134284 states and 165158 transitions. [2024-12-02 14:38:54,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 594 states. [2024-12-02 14:38:54,325 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.6979166666666665) internal successors, (259), 96 states have internal predecessors, (259), 0 states have call successors, (0), 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 93 [2024-12-02 14:38:54,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:38:54,437 INFO L225 Difference]: With dead ends: 134284 [2024-12-02 14:38:54,437 INFO L226 Difference]: Without dead ends: 132444 [2024-12-02 14:38:54,478 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 800 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 679 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207612 ImplicationChecksByTransitivity, 331.4s TimeCoverageRelationStatistics Valid=46101, Invalid=416979, Unknown=0, NotChecked=0, Total=463080 [2024-12-02 14:38:54,478 INFO L435 NwaCegarLoop]: 1767 mSDtfsCounter, 37133 mSDsluCounter, 35821 mSDsCounter, 0 mSdLazyCounter, 18963 mSolverCounterSat, 590 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37133 SdHoareTripleChecker+Valid, 37588 SdHoareTripleChecker+Invalid, 19553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 590 IncrementalHoareTripleChecker+Valid, 18963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.9s IncrementalHoareTripleChecker+Time [2024-12-02 14:38:54,479 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37133 Valid, 37588 Invalid, 19553 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [590 Valid, 18963 Invalid, 0 Unknown, 0 Unchecked, 23.9s Time] [2024-12-02 14:38:54,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132444 states. [2024-12-02 14:38:57,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132444 to 40563. [2024-12-02 14:38:57,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40563 states, 40561 states have (on average 1.2405019600108478) internal successors, (50316), 40562 states have internal predecessors, (50316), 0 states have call successors, (0), 0 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 14:38:57,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40563 states to 40563 states and 50316 transitions. [2024-12-02 14:38:57,719 INFO L78 Accepts]: Start accepts. Automaton has 40563 states and 50316 transitions. Word has length 93 [2024-12-02 14:38:57,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:38:57,719 INFO L471 AbstractCegarLoop]: Abstraction has 40563 states and 50316 transitions. [2024-12-02 14:38:57,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 2.6979166666666665) internal successors, (259), 96 states have internal predecessors, (259), 0 states have call successors, (0), 0 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 14:38:57,719 INFO L276 IsEmpty]: Start isEmpty. Operand 40563 states and 50316 transitions. [2024-12-02 14:38:57,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 14:38:57,720 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:38:57,720 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:38:57,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-12-02 14:38:57,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:38:57,920 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:38:57,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:38:57,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1576882104, now seen corresponding path program 1 times [2024-12-02 14:38:57,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:38:57,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265881349] [2024-12-02 14:38:57,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:38:57,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:38:57,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:38:58,577 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:38:58,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:38:58,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265881349] [2024-12-02 14:38:58,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265881349] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:38:58,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382993894] [2024-12-02 14:38:58,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:38:58,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:38:58,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:38:58,579 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:38:58,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 14:38:58,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:38:58,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-12-02 14:38:58,697 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:39:04,007 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:39:04,007 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:39:10,393 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:39:10,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382993894] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:39:10,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:39:10,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 33, 28] total 67 [2024-12-02 14:39:10,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143351159] [2024-12-02 14:39:10,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:39:10,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-12-02 14:39:10,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:39:10,394 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-12-02 14:39:10,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=602, Invalid=3820, Unknown=0, NotChecked=0, Total=4422 [2024-12-02 14:39:10,394 INFO L87 Difference]: Start difference. First operand 40563 states and 50316 transitions. Second operand has 67 states, 67 states have (on average 3.6417910447761193) internal successors, (244), 67 states have internal predecessors, (244), 0 states have call successors, (0), 0 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 14:40:47,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:40:47,816 INFO L93 Difference]: Finished difference Result 129922 states and 159719 transitions. [2024-12-02 14:40:47,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 316 states. [2024-12-02 14:40:47,816 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 3.6417910447761193) internal successors, (244), 67 states have internal predecessors, (244), 0 states have call successors, (0), 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 94 [2024-12-02 14:40:47,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:40:47,889 INFO L225 Difference]: With dead ends: 129922 [2024-12-02 14:40:47,889 INFO L226 Difference]: Without dead ends: 112599 [2024-12-02 14:40:47,911 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 378 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65364 ImplicationChecksByTransitivity, 83.8s TimeCoverageRelationStatistics Valid=22208, Invalid=121812, Unknown=0, NotChecked=0, Total=144020 [2024-12-02 14:40:47,912 INFO L435 NwaCegarLoop]: 1610 mSDtfsCounter, 35312 mSDsluCounter, 25780 mSDsCounter, 0 mSdLazyCounter, 8678 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35312 SdHoareTripleChecker+Valid, 27390 SdHoareTripleChecker+Invalid, 8839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 8678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2024-12-02 14:40:47,912 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35312 Valid, 27390 Invalid, 8839 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [161 Valid, 8678 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2024-12-02 14:40:47,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112599 states. [2024-12-02 14:40:50,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112599 to 34933. [2024-12-02 14:40:50,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34933 states, 34931 states have (on average 1.2484326243165096) internal successors, (43609), 34932 states have internal predecessors, (43609), 0 states have call successors, (0), 0 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 14:40:50,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34933 states to 34933 states and 43609 transitions. [2024-12-02 14:40:50,229 INFO L78 Accepts]: Start accepts. Automaton has 34933 states and 43609 transitions. Word has length 94 [2024-12-02 14:40:50,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:40:50,229 INFO L471 AbstractCegarLoop]: Abstraction has 34933 states and 43609 transitions. [2024-12-02 14:40:50,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 3.6417910447761193) internal successors, (244), 67 states have internal predecessors, (244), 0 states have call successors, (0), 0 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 14:40:50,229 INFO L276 IsEmpty]: Start isEmpty. Operand 34933 states and 43609 transitions. [2024-12-02 14:40:50,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-12-02 14:40:50,231 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:40:50,231 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:40:50,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-12-02 14:40:50,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:40:50,432 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:40:50,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:40:50,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1707359913, now seen corresponding path program 1 times [2024-12-02 14:40:50,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:40:50,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326451694] [2024-12-02 14:40:50,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:40:50,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:40:50,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:40:50,539 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:40:50,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:40:50,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326451694] [2024-12-02 14:40:50,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326451694] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:40:50,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:40:50,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:40:50,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695377224] [2024-12-02 14:40:50,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:40:50,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:40:50,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:40:50,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:40:50,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:40:50,541 INFO L87 Difference]: Start difference. First operand 34933 states and 43609 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 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 14:40:57,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:40:57,952 INFO L93 Difference]: Finished difference Result 38690 states and 50607 transitions. [2024-12-02 14:40:57,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:40:57,952 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2024-12-02 14:40:57,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:40:57,974 INFO L225 Difference]: With dead ends: 38690 [2024-12-02 14:40:57,974 INFO L226 Difference]: Without dead ends: 37186 [2024-12-02 14:40:57,979 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 14:40:57,979 INFO L435 NwaCegarLoop]: 799 mSDtfsCounter, 2360 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 4789 mSolverCounterSat, 1179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2360 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 5968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1179 IncrementalHoareTripleChecker+Valid, 4789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:40:57,979 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2360 Valid, 818 Invalid, 5968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1179 Valid, 4789 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-12-02 14:40:57,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37186 states. [2024-12-02 14:41:00,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37186 to 37186. [2024-12-02 14:41:00,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37186 states, 37184 states have (on average 1.2424429862306368) internal successors, (46199), 37185 states have internal predecessors, (46199), 0 states have call successors, (0), 0 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 14:41:00,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37186 states to 37186 states and 46199 transitions. [2024-12-02 14:41:00,076 INFO L78 Accepts]: Start accepts. Automaton has 37186 states and 46199 transitions. Word has length 121 [2024-12-02 14:41:00,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:41:00,076 INFO L471 AbstractCegarLoop]: Abstraction has 37186 states and 46199 transitions. [2024-12-02 14:41:00,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 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 14:41:00,076 INFO L276 IsEmpty]: Start isEmpty. Operand 37186 states and 46199 transitions. [2024-12-02 14:41:00,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-12-02 14:41:00,080 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:41:00,080 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:41:00,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-12-02 14:41:00,081 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:41:00,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:41:00,081 INFO L85 PathProgramCache]: Analyzing trace with hash 368039186, now seen corresponding path program 1 times [2024-12-02 14:41:00,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:41:00,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459927005] [2024-12-02 14:41:00,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:41:00,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:41:00,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:41:00,795 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 48 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:41:00,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:41:00,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459927005] [2024-12-02 14:41:00,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459927005] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:41:00,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183303272] [2024-12-02 14:41:00,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:41:00,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:41:00,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:41:00,838 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:41:00,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 14:41:00,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:41:00,980 INFO L256 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 14:41:00,982 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:41:01,629 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 43 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:41:01,629 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:41:03,518 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 40 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:41:03,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183303272] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:41:03,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:41:03,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 31 [2024-12-02 14:41:03,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043177141] [2024-12-02 14:41:03,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:41:03,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-12-02 14:41:03,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:41:03,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-12-02 14:41:03,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2024-12-02 14:41:03,519 INFO L87 Difference]: Start difference. First operand 37186 states and 46199 transitions. Second operand has 32 states, 32 states have (on average 12.375) internal successors, (396), 31 states have internal predecessors, (396), 0 states have call successors, (0), 0 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 14:41:08,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:41:08,829 INFO L93 Difference]: Finished difference Result 69906 states and 86755 transitions. [2024-12-02 14:41:08,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-12-02 14:41:08,829 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 12.375) internal successors, (396), 31 states have internal predecessors, (396), 0 states have call successors, (0), 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 14:41:08,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:41:08,860 INFO L225 Difference]: With dead ends: 69906 [2024-12-02 14:41:08,860 INFO L226 Difference]: Without dead ends: 44050 [2024-12-02 14:41:08,875 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1278 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1274, Invalid=5206, Unknown=0, NotChecked=0, Total=6480 [2024-12-02 14:41:08,876 INFO L435 NwaCegarLoop]: 1539 mSDtfsCounter, 23519 mSDsluCounter, 17399 mSDsCounter, 0 mSdLazyCounter, 1536 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23519 SdHoareTripleChecker+Valid, 18938 SdHoareTripleChecker+Invalid, 1573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 14:41:08,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23519 Valid, 18938 Invalid, 1573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1536 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 14:41:08,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44050 states. [2024-12-02 14:41:11,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44050 to 37186. [2024-12-02 14:41:11,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37186 states, 37184 states have (on average 1.228243330464716) internal successors, (45671), 37185 states have internal predecessors, (45671), 0 states have call successors, (0), 0 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 14:41:11,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37186 states to 37186 states and 45671 transitions. [2024-12-02 14:41:11,225 INFO L78 Accepts]: Start accepts. Automaton has 37186 states and 45671 transitions. Word has length 146 [2024-12-02 14:41:11,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:41:11,226 INFO L471 AbstractCegarLoop]: Abstraction has 37186 states and 45671 transitions. [2024-12-02 14:41:11,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 12.375) internal successors, (396), 31 states have internal predecessors, (396), 0 states have call successors, (0), 0 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 14:41:11,226 INFO L276 IsEmpty]: Start isEmpty. Operand 37186 states and 45671 transitions. [2024-12-02 14:41:11,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-12-02 14:41:11,231 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:41:11,231 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:41:11,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 14:41:11,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:41:11,431 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:41:11,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:41:11,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1623666308, now seen corresponding path program 1 times [2024-12-02 14:41:11,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:41:11,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956788667] [2024-12-02 14:41:11,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:41:11,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:41:11,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:41:12,415 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 41 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:41:12,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:41:12,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956788667] [2024-12-02 14:41:12,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956788667] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:41:12,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961220778] [2024-12-02 14:41:12,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:41:12,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:41:12,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:41:12,417 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:41:12,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 14:41:12,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:41:12,572 INFO L256 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 14:41:12,574 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:41:13,615 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 23 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:41:13,615 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:41:15,814 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 16 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:41:15,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961220778] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:41:15,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:41:15,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 11] total 39 [2024-12-02 14:41:15,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833195090] [2024-12-02 14:41:15,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:41:15,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-12-02 14:41:15,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:41:15,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-12-02 14:41:15,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1425, Unknown=0, NotChecked=0, Total=1560 [2024-12-02 14:41:15,815 INFO L87 Difference]: Start difference. First operand 37186 states and 45671 transitions. Second operand has 40 states, 40 states have (on average 10.6) internal successors, (424), 39 states have internal predecessors, (424), 0 states have call successors, (0), 0 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 14:41:27,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:41:27,152 INFO L93 Difference]: Finished difference Result 71797 states and 87455 transitions. [2024-12-02 14:41:27,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-12-02 14:41:27,153 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 10.6) internal successors, (424), 39 states have internal predecessors, (424), 0 states have call successors, (0), 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 14:41:27,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:41:27,190 INFO L225 Difference]: With dead ends: 71797 [2024-12-02 14:41:27,190 INFO L226 Difference]: Without dead ends: 52673 [2024-12-02 14:41:27,201 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4219 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=2487, Invalid=13013, Unknown=0, NotChecked=0, Total=15500 [2024-12-02 14:41:27,201 INFO L435 NwaCegarLoop]: 1613 mSDtfsCounter, 29283 mSDsluCounter, 25790 mSDsCounter, 0 mSdLazyCounter, 3680 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29283 SdHoareTripleChecker+Valid, 27403 SdHoareTripleChecker+Invalid, 3764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:41:27,201 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29283 Valid, 27403 Invalid, 3764 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 3680 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 14:41:27,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52673 states. [2024-12-02 14:41:30,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52673 to 42737. [2024-12-02 14:41:30,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42737 states, 42735 states have (on average 1.217035217035217) internal successors, (52010), 42736 states have internal predecessors, (52010), 0 states have call successors, (0), 0 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 14:41:30,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42737 states to 42737 states and 52010 transitions. [2024-12-02 14:41:30,376 INFO L78 Accepts]: Start accepts. Automaton has 42737 states and 52010 transitions. Word has length 146 [2024-12-02 14:41:30,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:41:30,377 INFO L471 AbstractCegarLoop]: Abstraction has 42737 states and 52010 transitions. [2024-12-02 14:41:30,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 10.6) internal successors, (424), 39 states have internal predecessors, (424), 0 states have call successors, (0), 0 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 14:41:30,377 INFO L276 IsEmpty]: Start isEmpty. Operand 42737 states and 52010 transitions. [2024-12-02 14:41:30,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-12-02 14:41:30,383 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:41:30,383 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:41:30,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 14:41:30,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:41:30,584 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:41:30,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:41:30,584 INFO L85 PathProgramCache]: Analyzing trace with hash -946023504, now seen corresponding path program 1 times [2024-12-02 14:41:30,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:41:30,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523810014] [2024-12-02 14:41:30,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:41:30,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:41:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:41:31,446 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 52 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:41:31,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:41:31,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523810014] [2024-12-02 14:41:31,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523810014] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:41:31,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368996470] [2024-12-02 14:41:31,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:41:31,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:41:31,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:41:31,448 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:41:31,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 14:41:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:41:31,609 INFO L256 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 14:41:31,610 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:41:32,390 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 30 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:41:32,391 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:41:34,546 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 25 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:41:34,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368996470] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:41:34,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:41:34,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 35 [2024-12-02 14:41:34,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569117555] [2024-12-02 14:41:34,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:41:34,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-12-02 14:41:34,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:41:34,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-12-02 14:41:34,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1140, Unknown=0, NotChecked=0, Total=1260 [2024-12-02 14:41:34,547 INFO L87 Difference]: Start difference. First operand 42737 states and 52010 transitions. Second operand has 36 states, 36 states have (on average 11.38888888888889) internal successors, (410), 35 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 14:41:50,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:41:50,534 INFO L93 Difference]: Finished difference Result 120910 states and 145894 transitions. [2024-12-02 14:41:50,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2024-12-02 14:41:50,534 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 11.38888888888889) internal successors, (410), 35 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 14:41:50,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:41:50,604 INFO L225 Difference]: With dead ends: 120910 [2024-12-02 14:41:50,604 INFO L226 Difference]: Without dead ends: 90620 [2024-12-02 14:41:50,623 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8644 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=4089, Invalid=22971, Unknown=0, NotChecked=0, Total=27060 [2024-12-02 14:41:50,624 INFO L435 NwaCegarLoop]: 1569 mSDtfsCounter, 27422 mSDsluCounter, 13922 mSDsCounter, 0 mSdLazyCounter, 2698 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27422 SdHoareTripleChecker+Valid, 15491 SdHoareTripleChecker+Invalid, 2783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-12-02 14:41:50,624 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27422 Valid, 15491 Invalid, 2783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2698 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-12-02 14:41:50,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90620 states. [2024-12-02 14:41:56,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90620 to 65470. [2024-12-02 14:41:56,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65470 states, 65468 states have (on average 1.2028930164355105) internal successors, (78751), 65469 states have internal predecessors, (78751), 0 states have call successors, (0), 0 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 14:41:56,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65470 states to 65470 states and 78751 transitions. [2024-12-02 14:41:56,242 INFO L78 Accepts]: Start accepts. Automaton has 65470 states and 78751 transitions. Word has length 146 [2024-12-02 14:41:56,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:41:56,242 INFO L471 AbstractCegarLoop]: Abstraction has 65470 states and 78751 transitions. [2024-12-02 14:41:56,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 11.38888888888889) internal successors, (410), 35 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 14:41:56,242 INFO L276 IsEmpty]: Start isEmpty. Operand 65470 states and 78751 transitions. [2024-12-02 14:41:56,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-12-02 14:41:56,250 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:41:56,251 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:41:56,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 14:41:56,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-12-02 14:41:56,451 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:41:56,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:41:56,451 INFO L85 PathProgramCache]: Analyzing trace with hash -4583504, now seen corresponding path program 1 times [2024-12-02 14:41:56,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:41:56,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721369639] [2024-12-02 14:41:56,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:41:56,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:41:56,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:41:58,901 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 16 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:41:58,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:41:58,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721369639] [2024-12-02 14:41:58,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721369639] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:41:58,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452934627] [2024-12-02 14:41:58,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:41:58,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:41:58,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:41:58,903 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:41:58,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67a1ea8c-f2a7-4d1a-8c04-0ab67a5015c9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 14:41:59,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:41:59,081 INFO L256 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 109 conjuncts are in the unsatisfiable core [2024-12-02 14:41:59,083 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:42:09,639 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 35 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:42:09,639 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:42:33,852 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 16 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:42:33,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452934627] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:42:33,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:42:33,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 47, 44] total 120 [2024-12-02 14:42:33,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023302192] [2024-12-02 14:42:33,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:42:33,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2024-12-02 14:42:33,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:42:33,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2024-12-02 14:42:33,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1688, Invalid=12592, Unknown=0, NotChecked=0, Total=14280 [2024-12-02 14:42:33,854 INFO L87 Difference]: Start difference. First operand 65470 states and 78751 transitions. Second operand has 120 states, 120 states have (on average 3.575) internal successors, (429), 120 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)