./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label07.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_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/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_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label07.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/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_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/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 c07e007f9f3a362ec25382ccff24a1aeded702728f7c63228a63ffce5d34476e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 07:07:12,808 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 07:07:12,858 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 07:07:12,862 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 07:07:12,862 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 07:07:12,881 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 07:07:12,882 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 07:07:12,882 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 07:07:12,882 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 07:07:12,883 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 07:07:12,883 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 07:07:12,883 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 07:07:12,883 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 07:07:12,883 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 07:07:12,883 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 07:07:12,884 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 07:07:12,884 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 07:07:12,884 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 07:07:12,884 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 07:07:12,884 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 07:07:12,884 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 07:07:12,884 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 07:07:12,884 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 07:07:12,884 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 07:07:12,884 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 07:07:12,884 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 07:07:12,885 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 07:07:12,885 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 07:07:12,885 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 07:07:12,885 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:07:12,885 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:07:12,885 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:07:12,885 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:07:12,885 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 07:07:12,885 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:07:12,885 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:07:12,886 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:07:12,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:07:12,886 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 07:07:12,886 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 07:07:12,886 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 07:07:12,886 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 07:07:12,886 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 07:07:12,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 07:07:12,886 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 07:07:12,886 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 07:07:12,887 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 07:07:12,887 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 07:07:12,887 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_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/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 -> c07e007f9f3a362ec25382ccff24a1aeded702728f7c63228a63ffce5d34476e [2024-12-02 07:07:13,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 07:07:13,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 07:07:13,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 07:07:13,094 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 07:07:13,095 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 07:07:13,096 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label07.c [2024-12-02 07:07:15,723 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/data/a7da183c8/8a9d34dbff5a4901b2078eefdf64024c/FLAGe813a65a5 [2024-12-02 07:07:16,142 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 07:07:16,143 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label07.c [2024-12-02 07:07:16,170 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/data/a7da183c8/8a9d34dbff5a4901b2078eefdf64024c/FLAGe813a65a5 [2024-12-02 07:07:16,183 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/data/a7da183c8/8a9d34dbff5a4901b2078eefdf64024c [2024-12-02 07:07:16,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 07:07:16,186 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 07:07:16,188 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 07:07:16,188 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 07:07:16,191 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 07:07:16,192 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:07:16" (1/1) ... [2024-12-02 07:07:16,193 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a14ac37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:16, skipping insertion in model container [2024-12-02 07:07:16,193 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:07:16" (1/1) ... [2024-12-02 07:07:16,273 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 07:07:16,530 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_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label07.c[11640,11653] [2024-12-02 07:07:16,554 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_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label07.c[12482,12495] [2024-12-02 07:07:17,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:07:17,196 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 07:07:17,225 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_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label07.c[11640,11653] [2024-12-02 07:07:17,228 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_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label07.c[12482,12495] [2024-12-02 07:07:17,572 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:07:17,591 INFO L204 MainTranslator]: Completed translation [2024-12-02 07:07:17,591 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:17 WrapperNode [2024-12-02 07:07:17,591 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 07:07:17,592 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 07:07:17,592 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 07:07:17,592 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 07:07:17,597 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:17" (1/1) ... [2024-12-02 07:07:17,631 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:17" (1/1) ... [2024-12-02 07:07:17,908 INFO L138 Inliner]: procedures = 36, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5097 [2024-12-02 07:07:17,909 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 07:07:17,910 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 07:07:17,910 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 07:07:17,910 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 07:07:17,919 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:17" (1/1) ... [2024-12-02 07:07:17,920 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:17" (1/1) ... [2024-12-02 07:07:17,960 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:17" (1/1) ... [2024-12-02 07:07:18,141 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 07:07:18,142 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:17" (1/1) ... [2024-12-02 07:07:18,142 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:17" (1/1) ... [2024-12-02 07:07:18,294 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:17" (1/1) ... [2024-12-02 07:07:18,311 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:17" (1/1) ... [2024-12-02 07:07:18,346 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:17" (1/1) ... [2024-12-02 07:07:18,367 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:17" (1/1) ... [2024-12-02 07:07:18,378 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:17" (1/1) ... [2024-12-02 07:07:18,461 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 07:07:18,463 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 07:07:18,463 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 07:07:18,463 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 07:07:18,464 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:17" (1/1) ... [2024-12-02 07:07:18,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:07:18,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:07:18,488 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 07:07:18,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 07:07:18,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 07:07:18,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 07:07:18,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 07:07:18,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 07:07:18,629 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 07:07:18,631 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 07:07:23,084 INFO L? ?]: Removed 744 outVars from TransFormulas that were not future-live. [2024-12-02 07:07:23,085 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 07:07:23,109 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 07:07:23,109 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-12-02 07:07:23,109 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:07:23 BoogieIcfgContainer [2024-12-02 07:07:23,110 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 07:07:23,112 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 07:07:23,112 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 07:07:23,117 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 07:07:23,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:07:16" (1/3) ... [2024-12-02 07:07:23,117 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eca9e26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:07:23, skipping insertion in model container [2024-12-02 07:07:23,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:07:17" (2/3) ... [2024-12-02 07:07:23,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eca9e26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:07:23, skipping insertion in model container [2024-12-02 07:07:23,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:07:23" (3/3) ... [2024-12-02 07:07:23,119 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label07.c [2024-12-02 07:07:23,133 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 07:07:23,135 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label07.c that has 1 procedures, 900 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-12-02 07:07:23,204 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:07:23,213 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;@45f69bd5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:07:23,214 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-02 07:07:23,218 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 07:07:23,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-12-02 07:07:23,222 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:07:23,222 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:07:23,223 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:07:23,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:07:23,228 INFO L85 PathProgramCache]: Analyzing trace with hash -2121483285, now seen corresponding path program 1 times [2024-12-02 07:07:23,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:07:23,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161944247] [2024-12-02 07:07:23,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:07:23,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:07:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:07:23,415 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 07:07:23,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:07:23,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161944247] [2024-12-02 07:07:23,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161944247] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:07:23,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:07:23,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 07:07:23,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595123967] [2024-12-02 07:07:23,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:07:23,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:07:23,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:07:23,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:07:23,436 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:07:23,439 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 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:07:26,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:07:26,679 INFO L93 Difference]: Finished difference Result 2518 states and 4848 transitions. [2024-12-02 07:07:26,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:07:26,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2024-12-02 07:07:26,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:07:26,697 INFO L225 Difference]: With dead ends: 2518 [2024-12-02 07:07:26,698 INFO L226 Difference]: Without dead ends: 1585 [2024-12-02 07:07:26,703 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 07:07:26,705 INFO L435 NwaCegarLoop]: 286 mSDtfsCounter, 1030 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:07:26,705 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1030 Valid, 297 Invalid, 3208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-12-02 07:07:26,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2024-12-02 07:07:26,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1585. [2024-12-02 07:07:26,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1583 states have (on average 1.8408085912823753) internal successors, (2914), 1584 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:07:26,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2914 transitions. [2024-12-02 07:07:26,782 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2914 transitions. Word has length 7 [2024-12-02 07:07:26,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:07:26,783 INFO L471 AbstractCegarLoop]: Abstraction has 1585 states and 2914 transitions. [2024-12-02 07:07:26,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:07:26,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2914 transitions. [2024-12-02 07:07:26,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-12-02 07:07:26,784 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:07:26,784 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 07:07:26,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 07:07:26,784 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:07:26,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:07:26,785 INFO L85 PathProgramCache]: Analyzing trace with hash -768109886, now seen corresponding path program 1 times [2024-12-02 07:07:26,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:07:26,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733569324] [2024-12-02 07:07:26,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:07:26,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:07:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:07:26,978 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 07:07:26,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:07:26,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733569324] [2024-12-02 07:07:26,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733569324] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:07:26,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:07:26,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 07:07:26,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563612474] [2024-12-02 07:07:26,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:07:26,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:07:26,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:07:26,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:07:26,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:07:26,981 INFO L87 Difference]: Start difference. First operand 1585 states and 2914 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 07:07:27,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:07:27,043 INFO L93 Difference]: Finished difference Result 1632 states and 2986 transitions. [2024-12-02 07:07:27,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:07:27,044 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 07:07:27,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:07:27,049 INFO L225 Difference]: With dead ends: 1632 [2024-12-02 07:07:27,049 INFO L226 Difference]: Without dead ends: 1585 [2024-12-02 07:07:27,049 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 07:07:27,050 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, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:07:27,050 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6256 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:07:27,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2024-12-02 07:07:27,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1585. [2024-12-02 07:07:27,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1583 states have (on average 1.82122552116235) internal successors, (2883), 1584 states have internal predecessors, (2883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:07:27,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2883 transitions. [2024-12-02 07:07:27,077 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2883 transitions. Word has length 25 [2024-12-02 07:07:27,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:07:27,077 INFO L471 AbstractCegarLoop]: Abstraction has 1585 states and 2883 transitions. [2024-12-02 07:07:27,077 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 07:07:27,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2883 transitions. [2024-12-02 07:07:27,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-12-02 07:07:27,078 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:07:27,078 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 07:07:27,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 07:07:27,079 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:07:27,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:07:27,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1032471947, now seen corresponding path program 1 times [2024-12-02 07:07:27,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:07:27,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152905636] [2024-12-02 07:07:27,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:07:27,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:07:27,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:07:27,252 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 07:07:27,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:07:27,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152905636] [2024-12-02 07:07:27,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152905636] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:07:27,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:07:27,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:07:27,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026915992] [2024-12-02 07:07:27,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:07:27,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:07:27,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:07:27,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:07:27,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:07:27,254 INFO L87 Difference]: Start difference. First operand 1585 states and 2883 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 07:07:27,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:07:27,520 INFO L93 Difference]: Finished difference Result 2015 states and 3563 transitions. [2024-12-02 07:07:27,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 07:07:27,521 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 07:07:27,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:07:27,527 INFO L225 Difference]: With dead ends: 2015 [2024-12-02 07:07:27,527 INFO L226 Difference]: Without dead ends: 1972 [2024-12-02 07:07:27,528 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 07:07:27,529 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 07:07:27,529 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 07:07:27,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2024-12-02 07:07:27,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 1626. [2024-12-02 07:07:27,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1624 states have (on average 1.8152709359605912) internal successors, (2948), 1625 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:07:27,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 2948 transitions. [2024-12-02 07:07:27,558 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 2948 transitions. Word has length 55 [2024-12-02 07:07:27,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:07:27,559 INFO L471 AbstractCegarLoop]: Abstraction has 1626 states and 2948 transitions. [2024-12-02 07:07:27,559 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 07:07:27,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 2948 transitions. [2024-12-02 07:07:27,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-12-02 07:07:27,560 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:07:27,561 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 07:07:27,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 07:07:27,561 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:07:27,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:07:27,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1347601061, now seen corresponding path program 1 times [2024-12-02 07:07:27,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:07:27,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634703671] [2024-12-02 07:07:27,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:07:27,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:07:27,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:07:27,629 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 07:07:27,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:07:27,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634703671] [2024-12-02 07:07:27,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634703671] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:07:27,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:07:27,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:07:27,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257243658] [2024-12-02 07:07:27,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:07:27,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:07:27,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:07:27,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:07:27,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:07:27,630 INFO L87 Difference]: Start difference. First operand 1626 states and 2948 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 07:07:27,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:07:27,660 INFO L93 Difference]: Finished difference Result 1783 states and 3195 transitions. [2024-12-02 07:07:27,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:07:27,661 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 07:07:27,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:07:27,666 INFO L225 Difference]: With dead ends: 1783 [2024-12-02 07:07:27,666 INFO L226 Difference]: Without dead ends: 1699 [2024-12-02 07:07:27,666 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 07:07:27,667 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 07:07:27,667 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 07:07:27,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2024-12-02 07:07:27,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1697. [2024-12-02 07:07:27,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1697 states, 1695 states have (on average 1.8041297935103244) internal successors, (3058), 1696 states have internal predecessors, (3058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:07:27,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 3058 transitions. [2024-12-02 07:07:27,694 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 3058 transitions. Word has length 57 [2024-12-02 07:07:27,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:07:27,694 INFO L471 AbstractCegarLoop]: Abstraction has 1697 states and 3058 transitions. [2024-12-02 07:07:27,695 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 07:07:27,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 3058 transitions. [2024-12-02 07:07:27,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-12-02 07:07:27,696 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:07:27,696 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 07:07:27,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 07:07:27,697 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:07:27,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:07:27,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1281107549, now seen corresponding path program 1 times [2024-12-02 07:07:27,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:07:27,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16213434] [2024-12-02 07:07:27,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:07:27,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:07:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:07:27,976 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 07:07:27,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:07:27,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16213434] [2024-12-02 07:07:27,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16213434] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:07:27,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:07:27,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:07:27,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932636387] [2024-12-02 07:07:27,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:07:27,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:07:27,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:07:27,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:07:27,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:07:27,978 INFO L87 Difference]: Start difference. First operand 1697 states and 3058 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 07:07:28,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:07:28,162 INFO L93 Difference]: Finished difference Result 1854 states and 3302 transitions. [2024-12-02 07:07:28,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:07:28,162 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 07:07:28,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:07:28,170 INFO L225 Difference]: With dead ends: 1854 [2024-12-02 07:07:28,170 INFO L226 Difference]: Without dead ends: 1699 [2024-12-02 07:07:28,171 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 07:07:28,172 INFO L435 NwaCegarLoop]: 1537 mSDtfsCounter, 2994 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2994 SdHoareTripleChecker+Valid, 1800 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:07:28,172 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2994 Valid, 1800 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:07:28,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2024-12-02 07:07:28,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1697. [2024-12-02 07:07:28,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1697 states, 1695 states have (on average 1.8029498525073746) internal successors, (3056), 1696 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:07:28,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 3056 transitions. [2024-12-02 07:07:28,214 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 3056 transitions. Word has length 57 [2024-12-02 07:07:28,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:07:28,214 INFO L471 AbstractCegarLoop]: Abstraction has 1697 states and 3056 transitions. [2024-12-02 07:07:28,214 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 07:07:28,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 3056 transitions. [2024-12-02 07:07:28,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-12-02 07:07:28,215 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:07:28,216 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 07:07:28,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 07:07:28,216 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:07:28,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:07:28,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1474351433, now seen corresponding path program 1 times [2024-12-02 07:07:28,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:07:28,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453994423] [2024-12-02 07:07:28,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:07:28,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:07:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:07:28,481 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 07:07:28,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:07:28,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453994423] [2024-12-02 07:07:28,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453994423] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:07:28,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:07:28,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 07:07:28,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229080965] [2024-12-02 07:07:28,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:07:28,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 07:07:28,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:07:28,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 07:07:28,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:07:28,483 INFO L87 Difference]: Start difference. First operand 1697 states and 3056 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 07:07:28,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:07:28,564 INFO L93 Difference]: Finished difference Result 1705 states and 3065 transitions. [2024-12-02 07:07:28,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 07:07:28,564 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 07:07:28,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:07:28,571 INFO L225 Difference]: With dead ends: 1705 [2024-12-02 07:07:28,571 INFO L226 Difference]: Without dead ends: 1703 [2024-12-02 07:07:28,572 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 07:07:28,572 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 07:07:28,573 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 07:07:28,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2024-12-02 07:07:28,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1703. [2024-12-02 07:07:28,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1703 states, 1701 states have (on average 1.7995296884185774) internal successors, (3061), 1702 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:07:28,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1703 states to 1703 states and 3061 transitions. [2024-12-02 07:07:28,609 INFO L78 Accepts]: Start accepts. Automaton has 1703 states and 3061 transitions. Word has length 58 [2024-12-02 07:07:28,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:07:28,609 INFO L471 AbstractCegarLoop]: Abstraction has 1703 states and 3061 transitions. [2024-12-02 07:07:28,609 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 07:07:28,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1703 states and 3061 transitions. [2024-12-02 07:07:28,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-12-02 07:07:28,610 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:07:28,610 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 07:07:28,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 07:07:28,610 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:07:28,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:07:28,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1913192451, now seen corresponding path program 1 times [2024-12-02 07:07:28,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:07:28,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750252880] [2024-12-02 07:07:28,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:07:28,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:07:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:07:28,695 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 07:07:28,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:07:28,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750252880] [2024-12-02 07:07:28,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750252880] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:07:28,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:07:28,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:07:28,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010121332] [2024-12-02 07:07:28,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:07:28,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:07:28,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:07:28,697 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:07:28,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:07:28,697 INFO L87 Difference]: Start difference. First operand 1703 states and 3061 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 07:07:28,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:07:28,743 INFO L93 Difference]: Finished difference Result 1878 states and 3327 transitions. [2024-12-02 07:07:28,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:07:28,744 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 07:07:28,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:07:28,751 INFO L225 Difference]: With dead ends: 1878 [2024-12-02 07:07:28,751 INFO L226 Difference]: Without dead ends: 1788 [2024-12-02 07:07:28,752 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 07:07:28,753 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 07:07:28,753 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 07:07:28,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1788 states. [2024-12-02 07:07:28,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1788 to 1786. [2024-12-02 07:07:28,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1786 states, 1784 states have (on average 1.7853139013452914) internal successors, (3185), 1785 states have internal predecessors, (3185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:07:28,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1786 states to 1786 states and 3185 transitions. [2024-12-02 07:07:28,810 INFO L78 Accepts]: Start accepts. Automaton has 1786 states and 3185 transitions. Word has length 59 [2024-12-02 07:07:28,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:07:28,810 INFO L471 AbstractCegarLoop]: Abstraction has 1786 states and 3185 transitions. [2024-12-02 07:07:28,810 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 07:07:28,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1786 states and 3185 transitions. [2024-12-02 07:07:28,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-12-02 07:07:28,811 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:07:28,811 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 07:07:28,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 07:07:28,812 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:07:28,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:07:28,812 INFO L85 PathProgramCache]: Analyzing trace with hash -2117918461, now seen corresponding path program 1 times [2024-12-02 07:07:28,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:07:28,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473356859] [2024-12-02 07:07:28,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:07:28,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:07:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:07:28,877 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 07:07:28,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:07:28,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473356859] [2024-12-02 07:07:28,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473356859] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:07:28,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:07:28,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:07:28,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277883747] [2024-12-02 07:07:28,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:07:28,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:07:28,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:07:28,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:07:28,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:07:28,879 INFO L87 Difference]: Start difference. First operand 1786 states and 3185 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 07:07:28,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:07:28,924 INFO L93 Difference]: Finished difference Result 2244 states and 3877 transitions. [2024-12-02 07:07:28,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:07:28,925 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 07:07:28,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:07:28,932 INFO L225 Difference]: With dead ends: 2244 [2024-12-02 07:07:28,932 INFO L226 Difference]: Without dead ends: 2003 [2024-12-02 07:07:28,933 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 07:07:28,934 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 07:07:28,934 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 07:07:28,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2003 states. [2024-12-02 07:07:28,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2003 to 2001. [2024-12-02 07:07:28,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2001 states, 1999 states have (on average 1.752376188094047) internal successors, (3503), 2000 states have internal predecessors, (3503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:07:28,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2001 states to 2001 states and 3503 transitions. [2024-12-02 07:07:28,999 INFO L78 Accepts]: Start accepts. Automaton has 2001 states and 3503 transitions. Word has length 59 [2024-12-02 07:07:28,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:07:28,999 INFO L471 AbstractCegarLoop]: Abstraction has 2001 states and 3503 transitions. [2024-12-02 07:07:28,999 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 07:07:28,999 INFO L276 IsEmpty]: Start isEmpty. Operand 2001 states and 3503 transitions. [2024-12-02 07:07:29,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-12-02 07:07:29,000 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:07:29,000 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 07:07:29,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 07:07:29,000 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:07:29,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:07:29,001 INFO L85 PathProgramCache]: Analyzing trace with hash -879656445, now seen corresponding path program 1 times [2024-12-02 07:07:29,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:07:29,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113091270] [2024-12-02 07:07:29,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:07:29,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:07:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:07:29,079 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 07:07:29,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:07:29,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113091270] [2024-12-02 07:07:29,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113091270] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:07:29,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:07:29,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:07:29,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934599020] [2024-12-02 07:07:29,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:07:29,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:07:29,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:07:29,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:07:29,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:07:29,082 INFO L87 Difference]: Start difference. First operand 2001 states and 3503 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 07:07:29,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:07:29,140 INFO L93 Difference]: Finished difference Result 2865 states and 4789 transitions. [2024-12-02 07:07:29,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:07:29,141 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 07:07:29,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:07:29,150 INFO L225 Difference]: With dead ends: 2865 [2024-12-02 07:07:29,150 INFO L226 Difference]: Without dead ends: 2409 [2024-12-02 07:07:29,152 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 07:07:29,152 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 07:07:29,152 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 07:07:29,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2409 states. [2024-12-02 07:07:29,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2409 to 2407. [2024-12-02 07:07:29,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2407 states, 2405 states have (on average 1.701039501039501) internal successors, (4091), 2406 states have internal predecessors, (4091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:07:29,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2407 states to 2407 states and 4091 transitions. [2024-12-02 07:07:29,228 INFO L78 Accepts]: Start accepts. Automaton has 2407 states and 4091 transitions. Word has length 59 [2024-12-02 07:07:29,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:07:29,228 INFO L471 AbstractCegarLoop]: Abstraction has 2407 states and 4091 transitions. [2024-12-02 07:07:29,228 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 07:07:29,228 INFO L276 IsEmpty]: Start isEmpty. Operand 2407 states and 4091 transitions. [2024-12-02 07:07:29,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-12-02 07:07:29,228 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:07:29,229 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 07:07:29,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 07:07:29,229 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:07:29,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:07:29,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1199842051, now seen corresponding path program 1 times [2024-12-02 07:07:29,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:07:29,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157403330] [2024-12-02 07:07:29,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:07:29,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:07:29,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:07:29,286 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 07:07:29,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:07:29,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157403330] [2024-12-02 07:07:29,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157403330] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:07:29,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:07:29,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:07:29,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770335637] [2024-12-02 07:07:29,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:07:29,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:07:29,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:07:29,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:07:29,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:07:29,287 INFO L87 Difference]: Start difference. First operand 2407 states and 4091 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 07:07:29,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:07:29,339 INFO L93 Difference]: Finished difference Result 4035 states and 6469 transitions. [2024-12-02 07:07:29,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:07:29,340 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 07:07:29,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:07:29,350 INFO L225 Difference]: With dead ends: 4035 [2024-12-02 07:07:29,350 INFO L226 Difference]: Without dead ends: 3173 [2024-12-02 07:07:29,352 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 07:07:29,352 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 07:07:29,353 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 07:07:29,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3173 states. [2024-12-02 07:07:29,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3173 to 3171. [2024-12-02 07:07:29,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3171 states, 3169 states have (on average 1.631745029977911) internal successors, (5171), 3170 states have internal predecessors, (5171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:07:29,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3171 states to 3171 states and 5171 transitions. [2024-12-02 07:07:29,436 INFO L78 Accepts]: Start accepts. Automaton has 3171 states and 5171 transitions. Word has length 59 [2024-12-02 07:07:29,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:07:29,436 INFO L471 AbstractCegarLoop]: Abstraction has 3171 states and 5171 transitions. [2024-12-02 07:07:29,436 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 07:07:29,437 INFO L276 IsEmpty]: Start isEmpty. Operand 3171 states and 5171 transitions. [2024-12-02 07:07:29,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-12-02 07:07:29,437 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:07:29,437 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 07:07:29,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 07:07:29,437 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:07:29,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:07:29,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1314192381, now seen corresponding path program 1 times [2024-12-02 07:07:29,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:07:29,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653232694] [2024-12-02 07:07:29,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:07:29,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:07:29,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:07:29,498 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 07:07:29,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:07:29,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653232694] [2024-12-02 07:07:29,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653232694] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:07:29,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:07:29,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:07:29,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149867158] [2024-12-02 07:07:29,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:07:29,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:07:29,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:07:29,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:07:29,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:07:29,499 INFO L87 Difference]: Start difference. First operand 3171 states and 5171 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 07:07:29,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:07:29,577 INFO L93 Difference]: Finished difference Result 6231 states and 9541 transitions. [2024-12-02 07:07:29,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:07:29,578 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 07:07:29,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:07:29,592 INFO L225 Difference]: With dead ends: 6231 [2024-12-02 07:07:29,592 INFO L226 Difference]: Without dead ends: 4605 [2024-12-02 07:07:29,595 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 07:07:29,595 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 07:07:29,596 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 07:07:29,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4605 states. [2024-12-02 07:07:29,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4605 to 4603. [2024-12-02 07:07:29,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4603 states, 4601 states have (on average 1.5516192132145186) internal successors, (7139), 4602 states have internal predecessors, (7139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:07:29,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4603 states to 4603 states and 7139 transitions. [2024-12-02 07:07:29,752 INFO L78 Accepts]: Start accepts. Automaton has 4603 states and 7139 transitions. Word has length 59 [2024-12-02 07:07:29,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:07:29,752 INFO L471 AbstractCegarLoop]: Abstraction has 4603 states and 7139 transitions. [2024-12-02 07:07:29,753 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 07:07:29,753 INFO L276 IsEmpty]: Start isEmpty. Operand 4603 states and 7139 transitions. [2024-12-02 07:07:29,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-12-02 07:07:29,754 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:07:29,754 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:29,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 07:07:29,755 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:07:29,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:07:29,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1667914046, now seen corresponding path program 1 times [2024-12-02 07:07:29,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:07:29,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565718192] [2024-12-02 07:07:29,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:07:29,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:07:29,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:07:29,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:07:29,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:07:29,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565718192] [2024-12-02 07:07:29,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565718192] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:07:29,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:07:29,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:07:29,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340474302] [2024-12-02 07:07:29,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:07:29,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:07:29,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:07:29,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:07:29,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:07:29,983 INFO L87 Difference]: Start difference. First operand 4603 states and 7139 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:07:35,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:07:35,250 INFO L93 Difference]: Finished difference Result 8360 states and 14029 transitions. [2024-12-02 07:07:35,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:07:35,250 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2024-12-02 07:07:35,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:07:35,260 INFO L225 Difference]: With dead ends: 8360 [2024-12-02 07:07:35,260 INFO L226 Difference]: Without dead ends: 6856 [2024-12-02 07:07:35,262 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 07:07:35,263 INFO L435 NwaCegarLoop]: 799 mSDtfsCounter, 2369 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 4805 mSolverCounterSat, 1138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2369 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 5943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1138 IncrementalHoareTripleChecker+Valid, 4805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:07:35,263 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2369 Valid, 819 Invalid, 5943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1138 Valid, 4805 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-12-02 07:07:35,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6856 states. [2024-12-02 07:07:35,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6856 to 6856. [2024-12-02 07:07:35,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6856 states, 6854 states have (on average 1.419317187044062) internal successors, (9728), 6855 states have internal predecessors, (9728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:07:35,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6856 states to 6856 states and 9728 transitions. [2024-12-02 07:07:35,450 INFO L78 Accepts]: Start accepts. Automaton has 6856 states and 9728 transitions. Word has length 76 [2024-12-02 07:07:35,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:07:35,451 INFO L471 AbstractCegarLoop]: Abstraction has 6856 states and 9728 transitions. [2024-12-02 07:07:35,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:07:35,451 INFO L276 IsEmpty]: Start isEmpty. Operand 6856 states and 9728 transitions. [2024-12-02 07:07:35,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-12-02 07:07:35,453 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:07:35,453 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:35,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 07:07:35,454 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:07:35,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:07:35,455 INFO L85 PathProgramCache]: Analyzing trace with hash -797514595, now seen corresponding path program 1 times [2024-12-02 07:07:35,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:07:35,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603767489] [2024-12-02 07:07:35,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:07:35,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:07:35,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:07:35,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 07:07:35,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:07:35,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603767489] [2024-12-02 07:07:35,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603767489] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:07:35,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:07:35,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 07:07:35,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746594173] [2024-12-02 07:07:35,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:07:35,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:07:35,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:07:35,558 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:07:35,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:07:35,558 INFO L87 Difference]: Start difference. First operand 6856 states and 9728 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:07:38,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:07:38,568 INFO L93 Difference]: Finished difference Result 11364 states and 17111 transitions. [2024-12-02 07:07:38,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:07:38,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 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 78 [2024-12-02 07:07:38,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:07:38,579 INFO L225 Difference]: With dead ends: 11364 [2024-12-02 07:07:38,579 INFO L226 Difference]: Without dead ends: 8358 [2024-12-02 07:07:38,581 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 07:07:38,581 INFO L435 NwaCegarLoop]: 572 mSDtfsCounter, 830 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-12-02 07:07:38,582 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 579 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-12-02 07:07:38,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8358 states. [2024-12-02 07:07:38,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8358 to 8358. [2024-12-02 07:07:38,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8358 states, 8356 states have (on average 1.3942077549066538) internal successors, (11650), 8357 states have internal predecessors, (11650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:07:38,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8358 states to 8358 states and 11650 transitions. [2024-12-02 07:07:38,676 INFO L78 Accepts]: Start accepts. Automaton has 8358 states and 11650 transitions. Word has length 78 [2024-12-02 07:07:38,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:07:38,677 INFO L471 AbstractCegarLoop]: Abstraction has 8358 states and 11650 transitions. [2024-12-02 07:07:38,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:07:38,677 INFO L276 IsEmpty]: Start isEmpty. Operand 8358 states and 11650 transitions. [2024-12-02 07:07:38,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-12-02 07:07:38,678 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:07:38,678 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 07:07:38,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 07:07:38,679 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:07:38,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:07:38,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1793062525, now seen corresponding path program 1 times [2024-12-02 07:07:38,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:07:38,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684260065] [2024-12-02 07:07:38,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:07:38,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:07:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:07:38,804 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 07:07:38,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:07:38,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684260065] [2024-12-02 07:07:38,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684260065] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:07:38,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:07:38,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:07:38,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964015485] [2024-12-02 07:07:38,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:07:38,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:07:38,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:07:38,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:07:38,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:07:38,805 INFO L87 Difference]: Start difference. First operand 8358 states and 11650 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 07:07:39,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:07:39,130 INFO L93 Difference]: Finished difference Result 23426 states and 32920 transitions. [2024-12-02 07:07:39,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:07:39,131 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 07:07:39,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:07:39,158 INFO L225 Difference]: With dead ends: 23426 [2024-12-02 07:07:39,158 INFO L226 Difference]: Without dead ends: 21248 [2024-12-02 07:07:39,162 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 07:07:39,163 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 07:07:39,163 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 07:07:39,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21248 states. [2024-12-02 07:07:39,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21248 to 10982. [2024-12-02 07:07:39,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10982 states, 10980 states have (on average 1.3947176684881604) internal successors, (15314), 10981 states have internal predecessors, (15314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:07:39,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10982 states to 10982 states and 15314 transitions. [2024-12-02 07:07:39,342 INFO L78 Accepts]: Start accepts. Automaton has 10982 states and 15314 transitions. Word has length 79 [2024-12-02 07:07:39,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:07:39,343 INFO L471 AbstractCegarLoop]: Abstraction has 10982 states and 15314 transitions. [2024-12-02 07:07:39,343 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 07:07:39,343 INFO L276 IsEmpty]: Start isEmpty. Operand 10982 states and 15314 transitions. [2024-12-02 07:07:39,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-12-02 07:07:39,344 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:07:39,344 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 07:07:39,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 07:07:39,345 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:07:39,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:07:39,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1529206141, now seen corresponding path program 1 times [2024-12-02 07:07:39,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:07:39,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089930748] [2024-12-02 07:07:39,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:07:39,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:07:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:07:39,544 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 07:07:39,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:07:39,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089930748] [2024-12-02 07:07:39,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089930748] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:07:39,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:07:39,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:07:39,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348570084] [2024-12-02 07:07:39,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:07:39,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:07:39,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:07:39,546 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:07:39,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:07:39,546 INFO L87 Difference]: Start difference. First operand 10982 states and 15314 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 07:07:40,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:07:40,002 INFO L93 Difference]: Finished difference Result 26482 states and 37208 transitions. [2024-12-02 07:07:40,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:07:40,003 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 07:07:40,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:07:40,043 INFO L225 Difference]: With dead ends: 26482 [2024-12-02 07:07:40,043 INFO L226 Difference]: Without dead ends: 23424 [2024-12-02 07:07:40,049 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 07:07:40,050 INFO L435 NwaCegarLoop]: 1608 mSDtfsCounter, 6316 mSDsluCounter, 2067 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6316 SdHoareTripleChecker+Valid, 3675 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:07:40,050 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6316 Valid, 3675 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:07:40,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23424 states. [2024-12-02 07:07:40,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23424 to 15126. [2024-12-02 07:07:40,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15126 states, 15124 states have (on average 1.3944723618090453) internal successors, (21090), 15125 states have internal predecessors, (21090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:07:40,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15126 states to 15126 states and 21090 transitions. [2024-12-02 07:07:40,428 INFO L78 Accepts]: Start accepts. Automaton has 15126 states and 21090 transitions. Word has length 79 [2024-12-02 07:07:40,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:07:40,428 INFO L471 AbstractCegarLoop]: Abstraction has 15126 states and 21090 transitions. [2024-12-02 07:07:40,429 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 07:07:40,429 INFO L276 IsEmpty]: Start isEmpty. Operand 15126 states and 21090 transitions. [2024-12-02 07:07:40,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-12-02 07:07:40,431 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:07:40,431 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 07:07:40,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 07:07:40,431 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:07:40,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:07:40,432 INFO L85 PathProgramCache]: Analyzing trace with hash -290944125, now seen corresponding path program 1 times [2024-12-02 07:07:40,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:07:40,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337239017] [2024-12-02 07:07:40,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:07:40,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:07:40,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:07:40,642 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 07:07:40,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:07:40,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337239017] [2024-12-02 07:07:40,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337239017] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:07:40,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:07:40,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:07:40,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116970084] [2024-12-02 07:07:40,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:07:40,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:07:40,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:07:40,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:07:40,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:07:40,644 INFO L87 Difference]: Start difference. First operand 15126 states and 21090 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 07:07:41,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:07:41,445 INFO L93 Difference]: Finished difference Result 29538 states and 41480 transitions. [2024-12-02 07:07:41,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:07:41,445 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 07:07:41,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:07:41,493 INFO L225 Difference]: With dead ends: 29538 [2024-12-02 07:07:41,493 INFO L226 Difference]: Without dead ends: 26480 [2024-12-02 07:07:41,501 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 07:07:41,502 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 07:07:41,502 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 07:07:41,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26480 states. [2024-12-02 07:07:41,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26480 to 18182. [2024-12-02 07:07:41,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18182 states, 18180 states have (on average 1.395049504950495) internal successors, (25362), 18181 states have internal predecessors, (25362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:07:41,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18182 states to 18182 states and 25362 transitions. [2024-12-02 07:07:41,964 INFO L78 Accepts]: Start accepts. Automaton has 18182 states and 25362 transitions. Word has length 79 [2024-12-02 07:07:41,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:07:41,964 INFO L471 AbstractCegarLoop]: Abstraction has 18182 states and 25362 transitions. [2024-12-02 07:07:41,964 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 07:07:41,964 INFO L276 IsEmpty]: Start isEmpty. Operand 18182 states and 25362 transitions. [2024-12-02 07:07:41,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-12-02 07:07:41,966 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:07:41,966 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 07:07:41,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 07:07:41,967 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:07:41,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:07:41,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1788554371, now seen corresponding path program 1 times [2024-12-02 07:07:41,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:07:41,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633975569] [2024-12-02 07:07:41,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:07:41,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:07:41,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:07:42,075 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 07:07:42,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:07:42,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633975569] [2024-12-02 07:07:42,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633975569] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:07:42,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:07:42,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:07:42,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401086838] [2024-12-02 07:07:42,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:07:42,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:07:42,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:07:42,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:07:42,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:07:42,076 INFO L87 Difference]: Start difference. First operand 18182 states and 25362 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 07:07:42,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:07:42,597 INFO L93 Difference]: Finished difference Result 32594 states and 45752 transitions. [2024-12-02 07:07:42,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:07:42,597 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 07:07:42,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:07:42,624 INFO L225 Difference]: With dead ends: 32594 [2024-12-02 07:07:42,625 INFO L226 Difference]: Without dead ends: 29536 [2024-12-02 07:07:42,631 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 07:07:42,632 INFO L435 NwaCegarLoop]: 1604 mSDtfsCounter, 6378 mSDsluCounter, 2032 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6378 SdHoareTripleChecker+Valid, 3636 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:07:42,632 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6378 Valid, 3636 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:07:42,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29536 states. [2024-12-02 07:07:43,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29536 to 21238. [2024-12-02 07:07:43,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21238 states, 21236 states have (on average 1.3954605387078547) internal successors, (29634), 21237 states have internal predecessors, (29634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:07:43,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21238 states to 21238 states and 29634 transitions. [2024-12-02 07:07:43,073 INFO L78 Accepts]: Start accepts. Automaton has 21238 states and 29634 transitions. Word has length 79 [2024-12-02 07:07:43,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:07:43,073 INFO L471 AbstractCegarLoop]: Abstraction has 21238 states and 29634 transitions. [2024-12-02 07:07:43,073 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 07:07:43,073 INFO L276 IsEmpty]: Start isEmpty. Operand 21238 states and 29634 transitions. [2024-12-02 07:07:43,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-12-02 07:07:43,075 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:07:43,075 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 07:07:43,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 07:07:43,075 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:07:43,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:07:43,075 INFO L85 PathProgramCache]: Analyzing trace with hash -725480061, now seen corresponding path program 1 times [2024-12-02 07:07:43,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:07:43,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735318064] [2024-12-02 07:07:43,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:07:43,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:07:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:07:43,178 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 07:07:43,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:07:43,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735318064] [2024-12-02 07:07:43,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735318064] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:07:43,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:07:43,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:07:43,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459522230] [2024-12-02 07:07:43,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:07:43,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:07:43,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:07:43,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:07:43,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:07:43,180 INFO L87 Difference]: Start difference. First operand 21238 states and 29634 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 07:07:43,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:07:43,949 INFO L93 Difference]: Finished difference Result 35650 states and 50024 transitions. [2024-12-02 07:07:43,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:07:43,950 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 07:07:43,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:07:43,980 INFO L225 Difference]: With dead ends: 35650 [2024-12-02 07:07:43,980 INFO L226 Difference]: Without dead ends: 32592 [2024-12-02 07:07:43,988 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 07:07:43,989 INFO L435 NwaCegarLoop]: 1603 mSDtfsCounter, 6332 mSDsluCounter, 2096 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6332 SdHoareTripleChecker+Valid, 3699 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:07:43,989 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6332 Valid, 3699 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:07:44,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32592 states. [2024-12-02 07:07:44,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32592 to 24294. [2024-12-02 07:07:44,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24294 states, 24292 states have (on average 1.3957681541248148) internal successors, (33906), 24293 states have internal predecessors, (33906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:07:44,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24294 states to 24294 states and 33906 transitions. [2024-12-02 07:07:44,541 INFO L78 Accepts]: Start accepts. Automaton has 24294 states and 33906 transitions. Word has length 79 [2024-12-02 07:07:44,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:07:44,541 INFO L471 AbstractCegarLoop]: Abstraction has 24294 states and 33906 transitions. [2024-12-02 07:07:44,542 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 07:07:44,542 INFO L276 IsEmpty]: Start isEmpty. Operand 24294 states and 33906 transitions. [2024-12-02 07:07:44,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-12-02 07:07:44,544 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:07:44,544 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 07:07:44,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 07:07:44,544 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:07:44,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:07:44,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1265022664, now seen corresponding path program 1 times [2024-12-02 07:07:44,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:07:44,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529357230] [2024-12-02 07:07:44,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:07:44,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:07:44,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:07:44,606 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 07:07:44,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:07:44,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529357230] [2024-12-02 07:07:44,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529357230] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:07:44,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:07:44,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:07:44,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021853204] [2024-12-02 07:07:44,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:07:44,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:07:44,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:07:44,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:07:44,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:07:44,608 INFO L87 Difference]: Start difference. First operand 24294 states and 33906 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 07:07:44,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:07:44,929 INFO L93 Difference]: Finished difference Result 43290 states and 60484 transitions. [2024-12-02 07:07:44,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:07:44,930 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 07:07:44,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:07:44,957 INFO L225 Difference]: With dead ends: 43290 [2024-12-02 07:07:44,957 INFO L226 Difference]: Without dead ends: 24296 [2024-12-02 07:07:44,970 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 07:07:44,971 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 07:07:44,971 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 07:07:44,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24296 states. [2024-12-02 07:07:45,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24296 to 24294. [2024-12-02 07:07:45,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24294 states, 24292 states have (on average 1.3835830726164993) internal successors, (33610), 24293 states have internal predecessors, (33610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:07:45,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24294 states to 24294 states and 33610 transitions. [2024-12-02 07:07:45,466 INFO L78 Accepts]: Start accepts. Automaton has 24294 states and 33610 transitions. Word has length 80 [2024-12-02 07:07:45,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:07:45,466 INFO L471 AbstractCegarLoop]: Abstraction has 24294 states and 33610 transitions. [2024-12-02 07:07:45,466 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 07:07:45,467 INFO L276 IsEmpty]: Start isEmpty. Operand 24294 states and 33610 transitions. [2024-12-02 07:07:45,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-12-02 07:07:45,468 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:07:45,468 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 07:07:45,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 07:07:45,468 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:07:45,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:07:45,468 INFO L85 PathProgramCache]: Analyzing trace with hash -2037489509, now seen corresponding path program 1 times [2024-12-02 07:07:45,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:07:45,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763426988] [2024-12-02 07:07:45,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:07:45,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:07:45,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:07:45,546 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 07:07:45,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:07:45,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763426988] [2024-12-02 07:07:45,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763426988] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:07:45,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:07:45,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:07:45,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644250666] [2024-12-02 07:07:45,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:07:45,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:07:45,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:07:45,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:07:45,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:07:45,548 INFO L87 Difference]: Start difference. First operand 24294 states and 33610 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 07:07:45,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:07:45,770 INFO L93 Difference]: Finished difference Result 31390 states and 43513 transitions. [2024-12-02 07:07:45,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:07:45,770 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 07:07:45,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:07:45,780 INFO L225 Difference]: With dead ends: 31390 [2024-12-02 07:07:45,780 INFO L226 Difference]: Without dead ends: 12396 [2024-12-02 07:07:45,789 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 07:07:45,790 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 07:07:45,790 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 07:07:45,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12396 states. [2024-12-02 07:07:45,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12396 to 12387. [2024-12-02 07:07:45,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12387 states, 12385 states have (on average 1.3822365765038354) internal successors, (17119), 12386 states have internal predecessors, (17119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:07:45,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12387 states to 12387 states and 17119 transitions. [2024-12-02 07:07:45,965 INFO L78 Accepts]: Start accepts. Automaton has 12387 states and 17119 transitions. Word has length 81 [2024-12-02 07:07:45,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:07:45,965 INFO L471 AbstractCegarLoop]: Abstraction has 12387 states and 17119 transitions. [2024-12-02 07:07:45,966 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 07:07:45,966 INFO L276 IsEmpty]: Start isEmpty. Operand 12387 states and 17119 transitions. [2024-12-02 07:07:45,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-12-02 07:07:45,967 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:07:45,967 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 07:07:45,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 07:07:45,967 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:07:45,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:07:45,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1483523354, now seen corresponding path program 1 times [2024-12-02 07:07:45,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:07:45,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46916144] [2024-12-02 07:07:45,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:07:45,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:07:45,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:07:46,073 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 07:07:46,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:07:46,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46916144] [2024-12-02 07:07:46,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46916144] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:07:46,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:07:46,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:07:46,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285511361] [2024-12-02 07:07:46,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:07:46,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:07:46,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:07:46,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:07:46,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:07:46,075 INFO L87 Difference]: Start difference. First operand 12387 states and 17119 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 07:07:46,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:07:46,166 INFO L93 Difference]: Finished difference Result 15927 states and 22009 transitions. [2024-12-02 07:07:46,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:07:46,166 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 07:07:46,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:07:46,173 INFO L225 Difference]: With dead ends: 15927 [2024-12-02 07:07:46,173 INFO L226 Difference]: Without dead ends: 8853 [2024-12-02 07:07:46,177 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 07:07:46,178 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 07:07:46,178 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 07:07:46,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8853 states. [2024-12-02 07:07:46,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8853 to 8851. [2024-12-02 07:07:46,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8851 states, 8849 states have (on average 1.3763137077635892) internal successors, (12179), 8850 states have internal predecessors, (12179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:07:46,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8851 states to 8851 states and 12179 transitions. [2024-12-02 07:07:46,280 INFO L78 Accepts]: Start accepts. Automaton has 8851 states and 12179 transitions. Word has length 82 [2024-12-02 07:07:46,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:07:46,280 INFO L471 AbstractCegarLoop]: Abstraction has 8851 states and 12179 transitions. [2024-12-02 07:07:46,280 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 07:07:46,280 INFO L276 IsEmpty]: Start isEmpty. Operand 8851 states and 12179 transitions. [2024-12-02 07:07:46,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-12-02 07:07:46,281 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:07:46,281 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 07:07:46,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 07:07:46,281 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:07:46,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:07:46,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1068531220, now seen corresponding path program 1 times [2024-12-02 07:07:46,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:07:46,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914104538] [2024-12-02 07:07:46,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:07:46,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:07:46,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:07:46,334 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 07:07:46,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:07:46,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914104538] [2024-12-02 07:07:46,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914104538] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:07:46,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:07:46,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:07:46,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926703017] [2024-12-02 07:07:46,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:07:46,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:07:46,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:07:46,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:07:46,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:07:46,335 INFO L87 Difference]: Start difference. First operand 8851 states and 12179 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 07:07:46,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:07:46,388 INFO L93 Difference]: Finished difference Result 10623 states and 14599 transitions. [2024-12-02 07:07:46,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:07:46,389 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 07:07:46,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:07:46,395 INFO L225 Difference]: With dead ends: 10623 [2024-12-02 07:07:46,396 INFO L226 Difference]: Without dead ends: 7085 [2024-12-02 07:07:46,398 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 07:07:46,400 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 07:07:46,400 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 07:07:46,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7085 states. [2024-12-02 07:07:46,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7085 to 7083. [2024-12-02 07:07:46,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7083 states, 7081 states have (on average 1.3748058183872334) internal successors, (9735), 7082 states have internal predecessors, (9735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:07:46,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7083 states to 7083 states and 9735 transitions. [2024-12-02 07:07:46,472 INFO L78 Accepts]: Start accepts. Automaton has 7083 states and 9735 transitions. Word has length 84 [2024-12-02 07:07:46,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:07:46,473 INFO L471 AbstractCegarLoop]: Abstraction has 7083 states and 9735 transitions. [2024-12-02 07:07:46,473 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 07:07:46,473 INFO L276 IsEmpty]: Start isEmpty. Operand 7083 states and 9735 transitions. [2024-12-02 07:07:46,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-12-02 07:07:46,474 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:07:46,474 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 07:07:46,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 07:07:46,474 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:07:46,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:07:46,474 INFO L85 PathProgramCache]: Analyzing trace with hash -2111828674, now seen corresponding path program 1 times [2024-12-02 07:07:46,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:07:46,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293535864] [2024-12-02 07:07:46,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:07:46,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:07:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:07:46,542 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 07:07:46,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:07:46,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293535864] [2024-12-02 07:07:46,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293535864] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:07:46,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:07:46,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:07:46,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032410166] [2024-12-02 07:07:46,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:07:46,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:07:46,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:07:46,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:07:46,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:07:46,543 INFO L87 Difference]: Start difference. First operand 7083 states and 9735 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 07:07:46,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:07:46,592 INFO L93 Difference]: Finished difference Result 7971 states and 10933 transitions. [2024-12-02 07:07:46,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:07:46,592 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 07:07:46,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:07:46,597 INFO L225 Difference]: With dead ends: 7971 [2024-12-02 07:07:46,597 INFO L226 Difference]: Without dead ends: 6201 [2024-12-02 07:07:46,598 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 07:07:46,599 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 07:07:46,599 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 07:07:46,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6201 states. [2024-12-02 07:07:46,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6201 to 6199. [2024-12-02 07:07:46,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6199 states, 6197 states have (on average 1.3758270130708408) internal successors, (8526), 6198 states have internal predecessors, (8526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:07:46,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6199 states to 6199 states and 8526 transitions. [2024-12-02 07:07:46,654 INFO L78 Accepts]: Start accepts. Automaton has 6199 states and 8526 transitions. Word has length 86 [2024-12-02 07:07:46,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:07:46,654 INFO L471 AbstractCegarLoop]: Abstraction has 6199 states and 8526 transitions. [2024-12-02 07:07:46,654 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 07:07:46,654 INFO L276 IsEmpty]: Start isEmpty. Operand 6199 states and 8526 transitions. [2024-12-02 07:07:46,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-12-02 07:07:46,655 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:07:46,655 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 07:07:46,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 07:07:46,655 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:07:46,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:07:46,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1630042352, now seen corresponding path program 1 times [2024-12-02 07:07:46,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:07:46,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796807058] [2024-12-02 07:07:46,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:07:46,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:07:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:07:46,949 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 07:07:46,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:07:46,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796807058] [2024-12-02 07:07:46,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796807058] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:07:46,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770594769] [2024-12-02 07:07:46,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:07:46,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:07:46,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:07:46,953 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:07:46,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 07:07:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:07:47,096 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 07:07:47,102 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:07:47,362 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 07:07:47,362 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:07:47,939 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:07:47,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770594769] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:07:47,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:07:47,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 6] total 19 [2024-12-02 07:07:47,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635595122] [2024-12-02 07:07:47,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:07:47,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 07:07:47,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:07:47,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 07:07:47,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-12-02 07:07:47,941 INFO L87 Difference]: Start difference. First operand 6199 states and 8526 transitions. Second operand has 19 states, 19 states have (on average 13.210526315789474) internal successors, (251), 19 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:07:50,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:07:50,171 INFO L93 Difference]: Finished difference Result 12397 states and 16610 transitions. [2024-12-02 07:07:50,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-12-02 07:07:50,172 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 13.210526315789474) internal successors, (251), 19 states have internal predecessors, (251), 0 states have call successors, (0), 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 07:07:50,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:07:50,181 INFO L225 Difference]: With dead ends: 12397 [2024-12-02 07:07:50,181 INFO L226 Difference]: Without dead ends: 11433 [2024-12-02 07:07:50,185 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1213 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=781, Invalid=3251, Unknown=0, NotChecked=0, Total=4032 [2024-12-02 07:07:50,185 INFO L435 NwaCegarLoop]: 1551 mSDtfsCounter, 11117 mSDsluCounter, 8063 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11117 SdHoareTripleChecker+Valid, 9614 SdHoareTripleChecker+Invalid, 1430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 07:07:50,185 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11117 Valid, 9614 Invalid, 1430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 07:07:50,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11433 states. [2024-12-02 07:07:50,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11433 to 10800. [2024-12-02 07:07:50,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10800 states, 10798 states have (on average 1.3358955362104092) internal successors, (14425), 10799 states have internal predecessors, (14425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:07:50,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10800 states to 10800 states and 14425 transitions. [2024-12-02 07:07:50,522 INFO L78 Accepts]: Start accepts. Automaton has 10800 states and 14425 transitions. Word has length 88 [2024-12-02 07:07:50,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:07:50,522 INFO L471 AbstractCegarLoop]: Abstraction has 10800 states and 14425 transitions. [2024-12-02 07:07:50,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 13.210526315789474) internal successors, (251), 19 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:07:50,522 INFO L276 IsEmpty]: Start isEmpty. Operand 10800 states and 14425 transitions. [2024-12-02 07:07:50,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-12-02 07:07:50,524 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:07:50,524 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 07:07:50,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 07:07:50,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-12-02 07:07:50,724 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:07:50,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:07:50,725 INFO L85 PathProgramCache]: Analyzing trace with hash -976563003, now seen corresponding path program 1 times [2024-12-02 07:07:50,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:07:50,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953001040] [2024-12-02 07:07:50,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:07:50,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:07:50,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:07:51,958 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 07:07:51,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:07:51,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953001040] [2024-12-02 07:07:51,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953001040] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:07:51,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332414435] [2024-12-02 07:07:51,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:07:51,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:07:51,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:07:51,960 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:07:51,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 07:07:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:07:52,088 INFO L256 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 07:07:52,091 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:07:52,629 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 07:07:52,629 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:07:53,502 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 07:07:53,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332414435] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:07:53,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:07:53,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2024-12-02 07:07:53,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976425366] [2024-12-02 07:07:53,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:07:53,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-12-02 07:07:53,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:07:53,503 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-12-02 07:07:53,503 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=561, Unknown=0, NotChecked=0, Total=650 [2024-12-02 07:07:53,504 INFO L87 Difference]: Start difference. First operand 10800 states and 14425 transitions. Second operand has 26 states, 26 states have (on average 8.884615384615385) internal successors, (231), 25 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:07:54,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:07:54,331 INFO L93 Difference]: Finished difference Result 21688 states and 28548 transitions. [2024-12-02 07:07:54,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 07:07:54,331 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 8.884615384615385) internal successors, (231), 25 states have internal predecessors, (231), 0 states have call successors, (0), 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 07:07:54,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:07:54,342 INFO L225 Difference]: With dead ends: 21688 [2024-12-02 07:07:54,342 INFO L226 Difference]: Without dead ends: 16485 [2024-12-02 07:07:54,347 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=279, Invalid=1053, Unknown=0, NotChecked=0, Total=1332 [2024-12-02 07:07:54,347 INFO L435 NwaCegarLoop]: 1512 mSDtfsCounter, 18788 mSDsluCounter, 3474 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18788 SdHoareTripleChecker+Valid, 4986 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:07:54,347 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18788 Valid, 4986 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 07:07:54,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16485 states. [2024-12-02 07:07:54,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16485 to 16337. [2024-12-02 07:07:54,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16337 states, 16335 states have (on average 1.309825528007346) internal successors, (21396), 16336 states have internal predecessors, (21396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:07:54,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16337 states to 16337 states and 21396 transitions. [2024-12-02 07:07:54,655 INFO L78 Accepts]: Start accepts. Automaton has 16337 states and 21396 transitions. Word has length 89 [2024-12-02 07:07:54,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:07:54,655 INFO L471 AbstractCegarLoop]: Abstraction has 16337 states and 21396 transitions. [2024-12-02 07:07:54,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.884615384615385) internal successors, (231), 25 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:07:54,655 INFO L276 IsEmpty]: Start isEmpty. Operand 16337 states and 21396 transitions. [2024-12-02 07:07:54,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-12-02 07:07:54,655 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:07:54,656 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 07:07:54,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 07:07:54,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:07:54,856 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:07:54,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:07:54,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1535524411, now seen corresponding path program 1 times [2024-12-02 07:07:54,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:07:54,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807560290] [2024-12-02 07:07:54,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:07:54,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:07:54,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:07:56,015 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 07:07:56,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:07:56,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807560290] [2024-12-02 07:07:56,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807560290] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:07:56,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674979825] [2024-12-02 07:07:56,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:07:56,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:07:56,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:07:56,017 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:07:56,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 07:07:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:07:56,133 INFO L256 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 07:07:56,134 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:07:56,653 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 07:07:56,653 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:07:57,612 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 07:07:57,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674979825] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:07:57,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:07:57,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 34 [2024-12-02 07:07:57,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033889472] [2024-12-02 07:07:57,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:07:57,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-12-02 07:07:57,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:07:57,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-12-02 07:07:57,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=963, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 07:07:57,614 INFO L87 Difference]: Start difference. First operand 16337 states and 21396 transitions. Second operand has 34 states, 34 states have (on average 6.970588235294118) internal successors, (237), 34 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 07:08:00,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:08:00,779 INFO L93 Difference]: Finished difference Result 63062 states and 81544 transitions. [2024-12-02 07:08:00,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-12-02 07:08:00,779 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 6.970588235294118) internal successors, (237), 34 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 89 [2024-12-02 07:08:00,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:08:00,813 INFO L225 Difference]: With dead ends: 63062 [2024-12-02 07:08:00,813 INFO L226 Difference]: Without dead ends: 52410 [2024-12-02 07:08:00,821 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=926, Invalid=3766, Unknown=0, NotChecked=0, Total=4692 [2024-12-02 07:08:00,821 INFO L435 NwaCegarLoop]: 1540 mSDtfsCounter, 20116 mSDsluCounter, 6819 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20116 SdHoareTripleChecker+Valid, 8359 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 07:08:00,822 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20116 Valid, 8359 Invalid, 1403 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [36 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 07:08:00,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52410 states. [2024-12-02 07:08:02,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52410 to 51858. [2024-12-02 07:08:02,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51858 states, 51856 states have (on average 1.2728903116322123) internal successors, (66007), 51857 states have internal predecessors, (66007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:08:02,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51858 states to 51858 states and 66007 transitions. [2024-12-02 07:08:02,090 INFO L78 Accepts]: Start accepts. Automaton has 51858 states and 66007 transitions. Word has length 89 [2024-12-02 07:08:02,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:08:02,090 INFO L471 AbstractCegarLoop]: Abstraction has 51858 states and 66007 transitions. [2024-12-02 07:08:02,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 6.970588235294118) internal successors, (237), 34 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 07:08:02,090 INFO L276 IsEmpty]: Start isEmpty. Operand 51858 states and 66007 transitions. [2024-12-02 07:08:02,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-12-02 07:08:02,091 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:08:02,091 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 07:08:02,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 07:08:02,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-02 07:08:02,292 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:08:02,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:08:02,292 INFO L85 PathProgramCache]: Analyzing trace with hash 154349394, now seen corresponding path program 1 times [2024-12-02 07:08:02,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:08:02,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587589476] [2024-12-02 07:08:02,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:08:02,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:08:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:08:02,608 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 07:08:02,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:08:02,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587589476] [2024-12-02 07:08:02,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587589476] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:08:02,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749816386] [2024-12-02 07:08:02,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:08:02,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:08:02,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:08:02,610 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:08:02,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 07:08:02,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:08:02,714 INFO L256 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 07:08:02,716 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:08:03,088 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 07:08:03,088 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:08:03,792 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 07:08:03,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749816386] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:08:03,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:08:03,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-12-02 07:08:03,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315697749] [2024-12-02 07:08:03,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:08:03,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-12-02 07:08:03,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:08:03,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-12-02 07:08:03,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2024-12-02 07:08:03,793 INFO L87 Difference]: Start difference. First operand 51858 states and 66007 transitions. Second operand has 25 states, 25 states have (on average 9.76) internal successors, (244), 24 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 07:08:07,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:08:07,462 INFO L93 Difference]: Finished difference Result 145701 states and 185032 transitions. [2024-12-02 07:08:07,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-12-02 07:08:07,462 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 9.76) internal successors, (244), 24 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 90 [2024-12-02 07:08:07,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:08:07,544 INFO L225 Difference]: With dead ends: 145701 [2024-12-02 07:08:07,544 INFO L226 Difference]: Without dead ends: 101897 [2024-12-02 07:08:07,571 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=622, Invalid=2458, Unknown=0, NotChecked=0, Total=3080 [2024-12-02 07:08:07,572 INFO L435 NwaCegarLoop]: 1544 mSDtfsCounter, 19943 mSDsluCounter, 5428 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19943 SdHoareTripleChecker+Valid, 6972 SdHoareTripleChecker+Invalid, 1167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 07:08:07,572 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19943 Valid, 6972 Invalid, 1167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 07:08:07,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101897 states. [2024-12-02 07:08:10,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101897 to 94745. [2024-12-02 07:08:10,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94745 states, 94743 states have (on average 1.2424031326852643) internal successors, (117709), 94744 states have internal predecessors, (117709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:08:10,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94745 states to 94745 states and 117709 transitions. [2024-12-02 07:08:10,799 INFO L78 Accepts]: Start accepts. Automaton has 94745 states and 117709 transitions. Word has length 90 [2024-12-02 07:08:10,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:08:10,799 INFO L471 AbstractCegarLoop]: Abstraction has 94745 states and 117709 transitions. [2024-12-02 07:08:10,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.76) internal successors, (244), 24 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 07:08:10,799 INFO L276 IsEmpty]: Start isEmpty. Operand 94745 states and 117709 transitions. [2024-12-02 07:08:10,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-12-02 07:08:10,801 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:08:10,801 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 07:08:10,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 07:08:11,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 07:08:11,001 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:08:11,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:08:11,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1858200354, now seen corresponding path program 1 times [2024-12-02 07:08:11,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:08:11,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297712213] [2024-12-02 07:08:11,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:08:11,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:08:11,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:08:12,246 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 07:08:12,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:08:12,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297712213] [2024-12-02 07:08:12,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297712213] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:08:12,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35861132] [2024-12-02 07:08:12,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:08:12,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:08:12,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:08:12,248 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:08:12,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 07:08:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:08:12,377 INFO L256 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-12-02 07:08:12,379 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:08:16,900 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 07:08:16,900 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:08:21,409 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 07:08:21,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35861132] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:08:21,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:08:21,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 25, 20] total 60 [2024-12-02 07:08:21,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141525517] [2024-12-02 07:08:21,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:08:21,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-12-02 07:08:21,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:08:21,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-12-02 07:08:21,412 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=3275, Unknown=0, NotChecked=0, Total=3540 [2024-12-02 07:08:21,412 INFO L87 Difference]: Start difference. First operand 94745 states and 117709 transitions. Second operand has 60 states, 60 states have (on average 4.233333333333333) internal successors, (254), 60 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 07:13:54,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:13:54,949 INFO L93 Difference]: Finished difference Result 359050 states and 444890 transitions. [2024-12-02 07:13:54,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 814 states. [2024-12-02 07:13:54,950 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.233333333333333) internal successors, (254), 60 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 92 [2024-12-02 07:13:54,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:13:55,517 INFO L225 Difference]: With dead ends: 359050 [2024-12-02 07:13:55,517 INFO L226 Difference]: Without dead ends: 324889 [2024-12-02 07:13:55,617 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1012 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 869 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355959 ImplicationChecksByTransitivity, 307.5s TimeCoverageRelationStatistics Valid=71648, Invalid=686122, Unknown=0, NotChecked=0, Total=757770 [2024-12-02 07:13:55,618 INFO L435 NwaCegarLoop]: 1765 mSDtfsCounter, 37512 mSDsluCounter, 39635 mSDsCounter, 0 mSdLazyCounter, 16229 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37512 SdHoareTripleChecker+Valid, 41400 SdHoareTripleChecker+Invalid, 16558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 16229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2024-12-02 07:13:55,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37512 Valid, 41400 Invalid, 16558 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [329 Valid, 16229 Invalid, 0 Unknown, 0 Unchecked, 16.4s Time] [2024-12-02 07:13:55,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324889 states. [2024-12-02 07:14:02,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324889 to 131174. [2024-12-02 07:14:02,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131174 states, 131172 states have (on average 1.2473546183636752) internal successors, (163618), 131173 states have internal predecessors, (163618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:14:02,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131174 states to 131174 states and 163618 transitions. [2024-12-02 07:14:02,926 INFO L78 Accepts]: Start accepts. Automaton has 131174 states and 163618 transitions. Word has length 92 [2024-12-02 07:14:02,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:14:02,927 INFO L471 AbstractCegarLoop]: Abstraction has 131174 states and 163618 transitions. [2024-12-02 07:14:02,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.233333333333333) internal successors, (254), 60 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 07:14:02,927 INFO L276 IsEmpty]: Start isEmpty. Operand 131174 states and 163618 transitions. [2024-12-02 07:14:02,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-12-02 07:14:02,929 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:14:02,929 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 07:14:02,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-12-02 07:14:03,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 07:14:03,130 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:14:03,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:14:03,131 INFO L85 PathProgramCache]: Analyzing trace with hash 2026037978, now seen corresponding path program 1 times [2024-12-02 07:14:03,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:14:03,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226996681] [2024-12-02 07:14:03,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:14:03,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:14:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:14:07,563 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 07:14:07,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:14:07,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226996681] [2024-12-02 07:14:07,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226996681] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:14:07,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678143459] [2024-12-02 07:14:07,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:14:07,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:14:07,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:14:07,566 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:14:07,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 07:14:07,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:14:07,726 INFO L256 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 07:14:07,729 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:14:08,670 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 07:14:08,670 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:14:10,389 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 07:14:10,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678143459] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:14:10,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:14:10,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 12, 12] total 51 [2024-12-02 07:14:10,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565474127] [2024-12-02 07:14:10,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:14:10,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-12-02 07:14:10,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:14:10,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-12-02 07:14:10,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=2402, Unknown=0, NotChecked=0, Total=2550 [2024-12-02 07:14:10,391 INFO L87 Difference]: Start difference. First operand 131174 states and 163618 transitions. Second operand has 51 states, 51 states have (on average 4.686274509803922) internal successors, (239), 51 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:15:09,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:15:09,502 INFO L93 Difference]: Finished difference Result 241476 states and 299547 transitions. [2024-12-02 07:15:09,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2024-12-02 07:15:09,502 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 4.686274509803922) internal successors, (239), 51 states have internal predecessors, (239), 0 states have call successors, (0), 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 07:15:09,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:15:09,715 INFO L225 Difference]: With dead ends: 241476 [2024-12-02 07:15:09,715 INFO L226 Difference]: Without dead ends: 201185 [2024-12-02 07:15:09,748 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16701 ImplicationChecksByTransitivity, 43.8s TimeCoverageRelationStatistics Valid=9549, Invalid=43121, Unknown=0, NotChecked=0, Total=52670 [2024-12-02 07:15:09,749 INFO L435 NwaCegarLoop]: 1690 mSDtfsCounter, 37917 mSDsluCounter, 31960 mSDsCounter, 0 mSdLazyCounter, 7422 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37917 SdHoareTripleChecker+Valid, 33650 SdHoareTripleChecker+Invalid, 7631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 7422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:15:09,749 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37917 Valid, 33650 Invalid, 7631 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [209 Valid, 7422 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2024-12-02 07:15:09,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201185 states. [2024-12-02 07:15:17,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201185 to 117489. [2024-12-02 07:15:17,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117489 states, 117487 states have (on average 1.2422225437708) internal successors, (145945), 117488 states have internal predecessors, (145945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:15:17,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117489 states to 117489 states and 145945 transitions. [2024-12-02 07:15:17,540 INFO L78 Accepts]: Start accepts. Automaton has 117489 states and 145945 transitions. Word has length 92 [2024-12-02 07:15:17,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:15:17,540 INFO L471 AbstractCegarLoop]: Abstraction has 117489 states and 145945 transitions. [2024-12-02 07:15:17,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 4.686274509803922) internal successors, (239), 51 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:15:17,540 INFO L276 IsEmpty]: Start isEmpty. Operand 117489 states and 145945 transitions. [2024-12-02 07:15:17,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-12-02 07:15:17,542 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:15:17,542 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, 1] [2024-12-02 07:15:17,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-12-02 07:15:17,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 07:15:17,743 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:15:17,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:15:17,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1004211701, now seen corresponding path program 1 times [2024-12-02 07:15:17,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:15:17,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368627215] [2024-12-02 07:15:17,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:15:17,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:15:17,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:15:20,120 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 07:15:20,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:15:20,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368627215] [2024-12-02 07:15:20,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368627215] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:15:20,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938643424] [2024-12-02 07:15:20,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:15:20,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:15:20,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:15:20,123 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:15:20,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 07:15:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:15:20,237 INFO L256 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-12-02 07:15:20,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:15:22,443 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 07:15:22,443 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:15:25,452 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 07:15:25,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938643424] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:15:25,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:15:25,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 19] total 58 [2024-12-02 07:15:25,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108366667] [2024-12-02 07:15:25,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:15:25,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-12-02 07:15:25,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:15:25,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-12-02 07:15:25,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=3034, Unknown=0, NotChecked=0, Total=3306 [2024-12-02 07:15:25,454 INFO L87 Difference]: Start difference. First operand 117489 states and 145945 transitions. Second operand has 58 states, 58 states have (on average 4.241379310344827) internal successors, (246), 58 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:16:41,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:16:41,202 INFO L93 Difference]: Finished difference Result 280054 states and 346994 transitions. [2024-12-02 07:16:41,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 258 states. [2024-12-02 07:16:41,203 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 4.241379310344827) internal successors, (246), 58 states have internal predecessors, (246), 0 states have call successors, (0), 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 07:16:41,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:16:41,488 INFO L225 Difference]: With dead ends: 280054 [2024-12-02 07:16:41,488 INFO L226 Difference]: Without dead ends: 241646 [2024-12-02 07:16:41,522 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 311 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39550 ImplicationChecksByTransitivity, 57.0s TimeCoverageRelationStatistics Valid=15447, Invalid=82209, Unknown=0, NotChecked=0, Total=97656 [2024-12-02 07:16:41,523 INFO L435 NwaCegarLoop]: 1645 mSDtfsCounter, 40944 mSDsluCounter, 31057 mSDsCounter, 0 mSdLazyCounter, 7614 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40944 SdHoareTripleChecker+Valid, 32702 SdHoareTripleChecker+Invalid, 7894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 7614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2024-12-02 07:16:41,523 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40944 Valid, 32702 Invalid, 7894 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [280 Valid, 7614 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2024-12-02 07:16:41,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241646 states. [2024-12-02 07:16:50,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241646 to 132918. [2024-12-02 07:16:50,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132918 states, 132916 states have (on average 1.2395196966505162) internal successors, (164752), 132917 states have internal predecessors, (164752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:16:51,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132918 states to 132918 states and 164752 transitions. [2024-12-02 07:16:51,054 INFO L78 Accepts]: Start accepts. Automaton has 132918 states and 164752 transitions. Word has length 93 [2024-12-02 07:16:51,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:16:51,055 INFO L471 AbstractCegarLoop]: Abstraction has 132918 states and 164752 transitions. [2024-12-02 07:16:51,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 4.241379310344827) internal successors, (246), 58 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:16:51,055 INFO L276 IsEmpty]: Start isEmpty. Operand 132918 states and 164752 transitions. [2024-12-02 07:16:51,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-12-02 07:16:51,056 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:16:51,056 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, 1] [2024-12-02 07:16:51,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-12-02 07:16:51,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:16:51,257 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:16:51,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:16:51,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1461263243, now seen corresponding path program 1 times [2024-12-02 07:16:51,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:16:51,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138637894] [2024-12-02 07:16:51,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:16:51,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:16:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:16:51,883 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 07:16:51,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:16:51,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138637894] [2024-12-02 07:16:51,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138637894] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:16:51,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122398173] [2024-12-02 07:16:51,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:16:51,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:16:51,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:16:51,885 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:16:51,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 07:16:51,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:16:51,995 INFO L256 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 07:16:51,996 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:16:52,722 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 07:16:52,722 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:16:53,509 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 07:16:53,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122398173] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:16:53,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:16:53,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2024-12-02 07:16:53,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576281619] [2024-12-02 07:16:53,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:16:53,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-12-02 07:16:53,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:16:53,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-12-02 07:16:53,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=997, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 07:16:53,510 INFO L87 Difference]: Start difference. First operand 132918 states and 164752 transitions. Second operand has 34 states, 34 states have (on average 7.323529411764706) internal successors, (249), 34 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:17:08,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:17:08,257 INFO L93 Difference]: Finished difference Result 231490 states and 284903 transitions. [2024-12-02 07:17:08,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-12-02 07:17:08,257 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 7.323529411764706) internal successors, (249), 34 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-12-02 07:17:08,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:17:08,386 INFO L225 Difference]: With dead ends: 231490 [2024-12-02 07:17:08,386 INFO L226 Difference]: Without dead ends: 165028 [2024-12-02 07:17:08,416 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2176 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1632, Invalid=6378, Unknown=0, NotChecked=0, Total=8010 [2024-12-02 07:17:08,417 INFO L435 NwaCegarLoop]: 1559 mSDtfsCounter, 7836 mSDsluCounter, 24836 mSDsCounter, 0 mSdLazyCounter, 1928 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7836 SdHoareTripleChecker+Valid, 26395 SdHoareTripleChecker+Invalid, 1963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:17:08,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7836 Valid, 26395 Invalid, 1963 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [35 Valid, 1928 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 07:17:08,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165028 states. [2024-12-02 07:17:13,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165028 to 77903. [2024-12-02 07:17:13,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77903 states, 77901 states have (on average 1.233745394795959) internal successors, (96110), 77902 states have internal predecessors, (96110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:17:13,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77903 states to 77903 states and 96110 transitions. [2024-12-02 07:17:13,470 INFO L78 Accepts]: Start accepts. Automaton has 77903 states and 96110 transitions. Word has length 93 [2024-12-02 07:17:13,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:17:13,470 INFO L471 AbstractCegarLoop]: Abstraction has 77903 states and 96110 transitions. [2024-12-02 07:17:13,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.323529411764706) internal successors, (249), 34 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:17:13,470 INFO L276 IsEmpty]: Start isEmpty. Operand 77903 states and 96110 transitions. [2024-12-02 07:17:13,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 07:17:13,471 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:17:13,471 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 07:17:13,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 07:17:13,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:17:13,671 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:17:13,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:17:13,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1057586264, now seen corresponding path program 1 times [2024-12-02 07:17:13,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:17:13,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589330651] [2024-12-02 07:17:13,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:17:13,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:17:13,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:17:14,390 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 07:17:14,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:17:14,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589330651] [2024-12-02 07:17:14,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589330651] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:17:14,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674553037] [2024-12-02 07:17:14,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:17:14,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:17:14,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:17:14,392 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:17:14,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 07:17:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:17:14,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-12-02 07:17:14,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:17:22,464 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 07:17:22,464 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:17:36,450 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 07:17:36,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674553037] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:17:36,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:17:36,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 38, 31] total 75 [2024-12-02 07:17:36,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796096293] [2024-12-02 07:17:36,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:17:36,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-12-02 07:17:36,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:17:36,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-12-02 07:17:36,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=723, Invalid=4827, Unknown=0, NotChecked=0, Total=5550 [2024-12-02 07:17:36,452 INFO L87 Difference]: Start difference. First operand 77903 states and 96110 transitions. Second operand has 75 states, 75 states have (on average 3.4133333333333336) internal successors, (256), 75 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:19:45,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:19:45,162 INFO L93 Difference]: Finished difference Result 240523 states and 297165 transitions. [2024-12-02 07:19:45,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2024-12-02 07:19:45,163 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 3.4133333333333336) internal successors, (256), 75 states have internal predecessors, (256), 0 states have call successors, (0), 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 07:19:45,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:19:45,327 INFO L225 Difference]: With dead ends: 240523 [2024-12-02 07:19:45,328 INFO L226 Difference]: Without dead ends: 210963 [2024-12-02 07:19:45,355 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26513 ImplicationChecksByTransitivity, 111.4s TimeCoverageRelationStatistics Valid=11949, Invalid=59073, Unknown=0, NotChecked=0, Total=71022 [2024-12-02 07:19:45,355 INFO L435 NwaCegarLoop]: 1598 mSDtfsCounter, 27212 mSDsluCounter, 27765 mSDsCounter, 0 mSdLazyCounter, 8453 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27212 SdHoareTripleChecker+Valid, 29363 SdHoareTripleChecker+Invalid, 8621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 8453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:19:45,355 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27212 Valid, 29363 Invalid, 8621 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [168 Valid, 8453 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2024-12-02 07:19:45,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210963 states. [2024-12-02 07:19:51,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210963 to 65944. [2024-12-02 07:19:51,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65944 states, 65942 states have (on average 1.2331897728306693) internal successors, (81319), 65943 states have internal predecessors, (81319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:19:51,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65944 states to 65944 states and 81319 transitions. [2024-12-02 07:19:51,637 INFO L78 Accepts]: Start accepts. Automaton has 65944 states and 81319 transitions. Word has length 94 [2024-12-02 07:19:51,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:19:51,638 INFO L471 AbstractCegarLoop]: Abstraction has 65944 states and 81319 transitions. [2024-12-02 07:19:51,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 3.4133333333333336) internal successors, (256), 75 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:19:51,638 INFO L276 IsEmpty]: Start isEmpty. Operand 65944 states and 81319 transitions. [2024-12-02 07:19:51,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-12-02 07:19:51,644 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:19:51,644 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:19:51,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-12-02 07:19:51,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:19:51,845 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:19:51,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:19:51,845 INFO L85 PathProgramCache]: Analyzing trace with hash 108690406, now seen corresponding path program 1 times [2024-12-02 07:19:51,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:19:51,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166207917] [2024-12-02 07:19:51,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:19:51,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:19:51,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:19:52,709 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 55 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:19:52,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:19:52,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166207917] [2024-12-02 07:19:52,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166207917] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:19:52,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272116835] [2024-12-02 07:19:52,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:19:52,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:19:52,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:19:52,711 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:19:52,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 07:19:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:19:52,876 INFO L256 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 07:19:52,878 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:19:53,880 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 42 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:19:53,880 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:19:55,646 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 39 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:19:55,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272116835] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:19:55,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:19:55,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 34 [2024-12-02 07:19:55,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297009355] [2024-12-02 07:19:55,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:19:55,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-12-02 07:19:55,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:19:55,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-12-02 07:19:55,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1072, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 07:19:55,648 INFO L87 Difference]: Start difference. First operand 65944 states and 81319 transitions. Second operand has 35 states, 35 states have (on average 11.2) internal successors, (392), 34 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:20:13,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:20:13,311 INFO L93 Difference]: Finished difference Result 158015 states and 193538 transitions. [2024-12-02 07:20:13,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-12-02 07:20:13,312 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 11.2) internal successors, (392), 34 states have internal predecessors, (392), 0 states have call successors, (0), 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 144 [2024-12-02 07:20:13,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:20:13,391 INFO L225 Difference]: With dead ends: 158015 [2024-12-02 07:20:13,392 INFO L226 Difference]: Without dead ends: 106142 [2024-12-02 07:20:13,408 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5723 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=3251, Invalid=15931, Unknown=0, NotChecked=0, Total=19182 [2024-12-02 07:20:13,409 INFO L435 NwaCegarLoop]: 1560 mSDtfsCounter, 29319 mSDsluCounter, 14768 mSDsCounter, 0 mSdLazyCounter, 2532 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29319 SdHoareTripleChecker+Valid, 16328 SdHoareTripleChecker+Invalid, 2616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-12-02 07:20:13,409 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29319 Valid, 16328 Invalid, 2616 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 2532 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-12-02 07:20:13,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106142 states. [2024-12-02 07:20:20,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106142 to 87848. [2024-12-02 07:20:20,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87848 states, 87846 states have (on average 1.2230835780798215) internal successors, (107443), 87847 states have internal predecessors, (107443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:20:20,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87848 states to 87848 states and 107443 transitions. [2024-12-02 07:20:20,730 INFO L78 Accepts]: Start accepts. Automaton has 87848 states and 107443 transitions. Word has length 144 [2024-12-02 07:20:20,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:20:20,730 INFO L471 AbstractCegarLoop]: Abstraction has 87848 states and 107443 transitions. [2024-12-02 07:20:20,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 11.2) internal successors, (392), 34 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:20:20,731 INFO L276 IsEmpty]: Start isEmpty. Operand 87848 states and 107443 transitions. [2024-12-02 07:20:20,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-12-02 07:20:20,735 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:20:20,735 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:20:20,742 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 07:20:20,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:20:20,936 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:20:20,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:20:20,936 INFO L85 PathProgramCache]: Analyzing trace with hash 148767320, now seen corresponding path program 1 times [2024-12-02 07:20:20,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:20:20,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541421996] [2024-12-02 07:20:20,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:20:20,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:20:20,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:20:21,720 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 41 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:20:21,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:20:21,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541421996] [2024-12-02 07:20:21,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541421996] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:20:21,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012862568] [2024-12-02 07:20:21,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:20:21,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:20:21,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:20:21,722 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:20:21,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 07:20:21,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:20:21,876 INFO L256 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 07:20:21,878 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:20:22,826 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 29 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:20:22,826 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:20:24,752 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 24 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:20:24,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012862568] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:20:24,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:20:24,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 35 [2024-12-02 07:20:24,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264769619] [2024-12-02 07:20:24,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:20:24,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-12-02 07:20:24,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:20:24,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-12-02 07:20:24,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1138, Unknown=0, NotChecked=0, Total=1260 [2024-12-02 07:20:24,754 INFO L87 Difference]: Start difference. First operand 87848 states and 107443 transitions. Second operand has 36 states, 36 states have (on average 11.333333333333334) internal successors, (408), 35 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:20:42,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:20:42,911 INFO L93 Difference]: Finished difference Result 161300 states and 198325 transitions. [2024-12-02 07:20:42,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-12-02 07:20:42,911 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 11.333333333333334) internal successors, (408), 35 states have internal predecessors, (408), 0 states have call successors, (0), 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 144 [2024-12-02 07:20:42,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:20:43,162 INFO L225 Difference]: With dead ends: 161300 [2024-12-02 07:20:43,162 INFO L226 Difference]: Without dead ends: 103402 [2024-12-02 07:20:43,183 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5614 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=3311, Invalid=16149, Unknown=0, NotChecked=0, Total=19460 [2024-12-02 07:20:43,183 INFO L435 NwaCegarLoop]: 1555 mSDtfsCounter, 31704 mSDsluCounter, 17835 mSDsCounter, 0 mSdLazyCounter, 2791 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31704 SdHoareTripleChecker+Valid, 19390 SdHoareTripleChecker+Invalid, 2873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:20:43,183 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31704 Valid, 19390 Invalid, 2873 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 2791 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 07:20:43,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103402 states. [2024-12-02 07:20:49,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103402 to 66684. [2024-12-02 07:20:49,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66684 states, 66682 states have (on average 1.2157253831618728) internal successors, (81067), 66683 states have internal predecessors, (81067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:20:49,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66684 states to 66684 states and 81067 transitions. [2024-12-02 07:20:49,754 INFO L78 Accepts]: Start accepts. Automaton has 66684 states and 81067 transitions. Word has length 144 [2024-12-02 07:20:49,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:20:49,754 INFO L471 AbstractCegarLoop]: Abstraction has 66684 states and 81067 transitions. [2024-12-02 07:20:49,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 11.333333333333334) internal successors, (408), 35 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:20:49,755 INFO L276 IsEmpty]: Start isEmpty. Operand 66684 states and 81067 transitions. [2024-12-02 07:20:49,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-12-02 07:20:49,759 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:20:49,759 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:20:49,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 07:20:49,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:20:49,960 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:20:49,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:20:49,960 INFO L85 PathProgramCache]: Analyzing trace with hash 767624872, now seen corresponding path program 1 times [2024-12-02 07:20:49,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:20:49,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086210948] [2024-12-02 07:20:49,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:20:49,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:20:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:20:50,544 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 16 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:20:50,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:20:50,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086210948] [2024-12-02 07:20:50,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086210948] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:20:50,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900609023] [2024-12-02 07:20:50,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:20:50,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:20:50,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:20:50,546 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:20:50,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c5ef87-1d5d-42ba-8ddc-47bc20056a6d/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 07:20:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:20:50,707 INFO L256 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 07:20:50,709 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:20:51,764 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 23 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:20:51,765 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:20:54,106 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 16 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:20:54,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900609023] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:20:54,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:20:54,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2024-12-02 07:20:54,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35673330] [2024-12-02 07:20:54,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:20:54,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 07:20:54,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:20:54,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 07:20:54,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2024-12-02 07:20:54,107 INFO L87 Difference]: Start difference. First operand 66684 states and 81067 transitions. Second operand has 28 states, 28 states have (on average 13.214285714285714) internal successors, (370), 27 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:21:01,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:21:01,657 INFO L93 Difference]: Finished difference Result 106357 states and 129129 transitions. [2024-12-02 07:21:01,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 07:21:01,658 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 13.214285714285714) internal successors, (370), 27 states have internal predecessors, (370), 0 states have call successors, (0), 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 07:21:01,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:21:01,709 INFO L225 Difference]: With dead ends: 106357 [2024-12-02 07:21:01,709 INFO L226 Difference]: Without dead ends: 67168 [2024-12-02 07:21:01,728 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=370, Invalid=1270, Unknown=0, NotChecked=0, Total=1640 [2024-12-02 07:21:01,729 INFO L435 NwaCegarLoop]: 1544 mSDtfsCounter, 15030 mSDsluCounter, 9355 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15030 SdHoareTripleChecker+Valid, 10899 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:21:01,729 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15030 Valid, 10899 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 07:21:01,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67168 states.