./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.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_ec1ffb4a-c8c6-411a-a205-219f7c3ef54e/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1ffb4a-c8c6-411a-a205-219f7c3ef54e/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_ec1ffb4a-c8c6-411a-a205-219f7c3ef54e/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1ffb4a-c8c6-411a-a205-219f7c3ef54e/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1ffb4a-c8c6-411a-a205-219f7c3ef54e/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_ec1ffb4a-c8c6-411a-a205-219f7c3ef54e/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 a2c5c77b8d7714bea640ff99a5b0e1a19cf307340ccbaffec9b7e0efde04f6ec --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 11:54:27,071 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 11:54:27,128 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1ffb4a-c8c6-411a-a205-219f7c3ef54e/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 11:54:27,133 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 11:54:27,133 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 11:54:27,155 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 11:54:27,155 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 11:54:27,155 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 11:54:27,156 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 11:54:27,156 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 11:54:27,156 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 11:54:27,156 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 11:54:27,156 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 11:54:27,157 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 11:54:27,157 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 11:54:27,157 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 11:54:27,157 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 11:54:27,157 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 11:54:27,157 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 11:54:27,157 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 11:54:27,157 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 11:54:27,157 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 11:54:27,157 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 11:54:27,157 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 11:54:27,158 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 11:54:27,158 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 11:54:27,158 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 11:54:27,158 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 11:54:27,158 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 11:54:27,158 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:54:27,158 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:54:27,158 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:54:27,158 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:54:27,158 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 11:54:27,158 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:54:27,158 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:54:27,159 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:54:27,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:54:27,159 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 11:54:27,159 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 11:54:27,159 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 11:54:27,159 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 11:54:27,159 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 11:54:27,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 11:54:27,159 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 11:54:27,159 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 11:54:27,159 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 11:54:27,159 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 11:54:27,160 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_ec1ffb4a-c8c6-411a-a205-219f7c3ef54e/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 -> a2c5c77b8d7714bea640ff99a5b0e1a19cf307340ccbaffec9b7e0efde04f6ec [2024-12-02 11:54:27,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 11:54:27,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 11:54:27,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 11:54:27,437 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 11:54:27,438 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 11:54:27,439 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1ffb4a-c8c6-411a-a205-219f7c3ef54e/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c [2024-12-02 11:54:30,274 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1ffb4a-c8c6-411a-a205-219f7c3ef54e/bin/uautomizer-verify-84ZbGMXZE1/data/8f6dd5298/50e8f93515af4082a2da5d21a511a0b9/FLAGdbb181141 [2024-12-02 11:54:30,478 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 11:54:30,478 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1ffb4a-c8c6-411a-a205-219f7c3ef54e/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c [2024-12-02 11:54:30,487 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1ffb4a-c8c6-411a-a205-219f7c3ef54e/bin/uautomizer-verify-84ZbGMXZE1/data/8f6dd5298/50e8f93515af4082a2da5d21a511a0b9/FLAGdbb181141 [2024-12-02 11:54:30,502 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1ffb4a-c8c6-411a-a205-219f7c3ef54e/bin/uautomizer-verify-84ZbGMXZE1/data/8f6dd5298/50e8f93515af4082a2da5d21a511a0b9 [2024-12-02 11:54:30,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 11:54:30,506 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 11:54:30,507 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 11:54:30,507 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 11:54:30,511 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 11:54:30,512 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:54:30" (1/1) ... [2024-12-02 11:54:30,513 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@736e9bfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:54:30, skipping insertion in model container [2024-12-02 11:54:30,513 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:54:30" (1/1) ... [2024-12-02 11:54:30,535 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 11:54:30,746 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_ec1ffb4a-c8c6-411a-a205-219f7c3ef54e/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c[12951,12964] [2024-12-02 11:54:30,750 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:54:30,764 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 11:54:30,824 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_ec1ffb4a-c8c6-411a-a205-219f7c3ef54e/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c[12951,12964] [2024-12-02 11:54:30,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:54:30,843 INFO L204 MainTranslator]: Completed translation [2024-12-02 11:54:30,844 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:54:30 WrapperNode [2024-12-02 11:54:30,844 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 11:54:30,845 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 11:54:30,846 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 11:54:30,846 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 11:54:30,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:54:30" (1/1) ... [2024-12-02 11:54:30,867 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:54:30" (1/1) ... [2024-12-02 11:54:30,903 INFO L138 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 483 [2024-12-02 11:54:30,903 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 11:54:30,904 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 11:54:30,904 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 11:54:30,904 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 11:54:30,916 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:54:30" (1/1) ... [2024-12-02 11:54:30,916 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:54:30" (1/1) ... [2024-12-02 11:54:30,920 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:54:30" (1/1) ... [2024-12-02 11:54:30,937 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 11:54:30,938 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:54:30" (1/1) ... [2024-12-02 11:54:30,938 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:54:30" (1/1) ... [2024-12-02 11:54:30,949 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:54:30" (1/1) ... [2024-12-02 11:54:30,950 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:54:30" (1/1) ... [2024-12-02 11:54:30,958 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:54:30" (1/1) ... [2024-12-02 11:54:30,960 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:54:30" (1/1) ... [2024-12-02 11:54:30,962 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:54:30" (1/1) ... [2024-12-02 11:54:30,966 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 11:54:30,967 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 11:54:30,967 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 11:54:30,967 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 11:54:30,968 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:54:30" (1/1) ... [2024-12-02 11:54:30,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:54:30,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1ffb4a-c8c6-411a-a205-219f7c3ef54e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:54:31,000 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1ffb4a-c8c6-411a-a205-219f7c3ef54e/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 11:54:31,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1ffb4a-c8c6-411a-a205-219f7c3ef54e/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 11:54:31,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 11:54:31,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 11:54:31,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 11:54:31,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 11:54:31,134 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 11:54:31,136 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 11:54:31,701 INFO L? ?]: Removed 42 outVars from TransFormulas that were not future-live. [2024-12-02 11:54:31,701 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 11:54:31,713 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 11:54:31,713 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 11:54:31,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:54:31 BoogieIcfgContainer [2024-12-02 11:54:31,714 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 11:54:31,715 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 11:54:31,716 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 11:54:31,719 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 11:54:31,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:54:30" (1/3) ... [2024-12-02 11:54:31,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7043b6e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:54:31, skipping insertion in model container [2024-12-02 11:54:31,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:54:30" (2/3) ... [2024-12-02 11:54:31,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7043b6e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:54:31, skipping insertion in model container [2024-12-02 11:54:31,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:54:31" (3/3) ... [2024-12-02 11:54:31,722 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c [2024-12-02 11:54:31,733 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 11:54:31,736 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_opt-floodmax.3.1.ufo.UNBOUNDED.pals.c that has 1 procedures, 131 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 11:54:31,784 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 11:54:31,794 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6a7b3c82, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 11:54:31,795 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 11:54:31,798 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 129 states have (on average 1.7596899224806202) internal successors, (227), 130 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:31,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-12-02 11:54:31,804 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:31,805 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] [2024-12-02 11:54:31,805 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:31,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:31,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1334537196, now seen corresponding path program 1 times [2024-12-02 11:54:31,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:31,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062945108] [2024-12-02 11:54:31,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:31,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:32,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:54:32,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:32,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062945108] [2024-12-02 11:54:32,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062945108] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:32,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:32,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 11:54:32,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793786265] [2024-12-02 11:54:32,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:32,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 11:54:32,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:32,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 11:54:32,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 11:54:32,102 INFO L87 Difference]: Start difference. First operand has 131 states, 129 states have (on average 1.7596899224806202) internal successors, (227), 130 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:32,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:32,126 INFO L93 Difference]: Finished difference Result 205 states and 355 transitions. [2024-12-02 11:54:32,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 11:54:32,128 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2024-12-02 11:54:32,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:32,134 INFO L225 Difference]: With dead ends: 205 [2024-12-02 11:54:32,134 INFO L226 Difference]: Without dead ends: 127 [2024-12-02 11:54:32,137 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 11:54:32,139 INFO L435 NwaCegarLoop]: 220 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:32,139 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:54:32,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-12-02 11:54:32,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2024-12-02 11:54:32,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.746031746031746) internal successors, (220), 126 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:32,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 220 transitions. [2024-12-02 11:54:32,172 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 220 transitions. Word has length 37 [2024-12-02 11:54:32,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:32,172 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 220 transitions. [2024-12-02 11:54:32,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:32,173 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 220 transitions. [2024-12-02 11:54:32,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-12-02 11:54:32,174 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:32,174 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] [2024-12-02 11:54:32,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 11:54:32,175 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:32,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:32,175 INFO L85 PathProgramCache]: Analyzing trace with hash 516888746, now seen corresponding path program 1 times [2024-12-02 11:54:32,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:32,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462687594] [2024-12-02 11:54:32,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:32,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:32,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:32,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:54:32,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:32,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462687594] [2024-12-02 11:54:32,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462687594] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:32,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:32,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 11:54:32,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012506770] [2024-12-02 11:54:32,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:32,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:54:32,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:32,449 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:54:32,449 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:54:32,449 INFO L87 Difference]: Start difference. First operand 127 states and 220 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:32,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:32,538 INFO L93 Difference]: Finished difference Result 204 states and 348 transitions. [2024-12-02 11:54:32,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:54:32,539 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2024-12-02 11:54:32,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:32,541 INFO L225 Difference]: With dead ends: 204 [2024-12-02 11:54:32,541 INFO L226 Difference]: Without dead ends: 127 [2024-12-02 11:54:32,541 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:54:32,542 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 0 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:32,542 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 843 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:54:32,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-12-02 11:54:32,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2024-12-02 11:54:32,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.5555555555555556) internal successors, (196), 126 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:32,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 196 transitions. [2024-12-02 11:54:32,552 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 196 transitions. Word has length 37 [2024-12-02 11:54:32,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:32,552 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 196 transitions. [2024-12-02 11:54:32,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:32,552 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 196 transitions. [2024-12-02 11:54:32,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-12-02 11:54:32,553 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:32,554 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:32,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 11:54:32,554 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:32,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:32,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1955434923, now seen corresponding path program 1 times [2024-12-02 11:54:32,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:32,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70367872] [2024-12-02 11:54:32,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:32,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:32,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:54:32,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:32,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70367872] [2024-12-02 11:54:32,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70367872] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:32,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:32,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:54:32,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79460516] [2024-12-02 11:54:32,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:32,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:54:32,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:32,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:54:32,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:54:32,678 INFO L87 Difference]: Start difference. First operand 127 states and 196 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:32,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:32,761 INFO L93 Difference]: Finished difference Result 263 states and 426 transitions. [2024-12-02 11:54:32,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:54:32,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-12-02 11:54:32,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:32,764 INFO L225 Difference]: With dead ends: 263 [2024-12-02 11:54:32,764 INFO L226 Difference]: Without dead ends: 190 [2024-12-02 11:54:32,764 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:54:32,765 INFO L435 NwaCegarLoop]: 189 mSDtfsCounter, 97 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:32,765 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 346 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:54:32,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-12-02 11:54:32,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 187. [2024-12-02 11:54:32,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.5806451612903225) internal successors, (294), 186 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:32,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 294 transitions. [2024-12-02 11:54:32,777 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 294 transitions. Word has length 60 [2024-12-02 11:54:32,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:32,778 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 294 transitions. [2024-12-02 11:54:32,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:32,778 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 294 transitions. [2024-12-02 11:54:32,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-02 11:54:32,780 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:32,780 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:32,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 11:54:32,780 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:32,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:32,781 INFO L85 PathProgramCache]: Analyzing trace with hash 270760217, now seen corresponding path program 1 times [2024-12-02 11:54:32,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:32,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992308232] [2024-12-02 11:54:32,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:32,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:32,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:54:32,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:32,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992308232] [2024-12-02 11:54:32,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992308232] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:32,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:32,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:54:32,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444336373] [2024-12-02 11:54:32,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:32,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:54:32,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:32,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:54:32,908 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:54:32,908 INFO L87 Difference]: Start difference. First operand 187 states and 294 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:32,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:32,963 INFO L93 Difference]: Finished difference Result 437 states and 710 transitions. [2024-12-02 11:54:32,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:54:32,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-12-02 11:54:32,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:32,966 INFO L225 Difference]: With dead ends: 437 [2024-12-02 11:54:32,966 INFO L226 Difference]: Without dead ends: 304 [2024-12-02 11:54:32,967 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:54:32,968 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 99 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:32,969 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 359 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:54:32,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-12-02 11:54:32,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 300. [2024-12-02 11:54:32,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 1.608695652173913) internal successors, (481), 299 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:32,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 481 transitions. [2024-12-02 11:54:32,989 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 481 transitions. Word has length 62 [2024-12-02 11:54:32,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:32,990 INFO L471 AbstractCegarLoop]: Abstraction has 300 states and 481 transitions. [2024-12-02 11:54:32,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:32,990 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 481 transitions. [2024-12-02 11:54:32,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 11:54:32,992 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:32,992 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:32,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 11:54:32,993 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:32,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:32,993 INFO L85 PathProgramCache]: Analyzing trace with hash -839775865, now seen corresponding path program 1 times [2024-12-02 11:54:32,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:32,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380747207] [2024-12-02 11:54:32,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:32,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:33,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:33,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:54:33,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:33,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380747207] [2024-12-02 11:54:33,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380747207] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:33,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:33,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:54:33,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399442846] [2024-12-02 11:54:33,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:33,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:54:33,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:33,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:54:33,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:54:33,151 INFO L87 Difference]: Start difference. First operand 300 states and 481 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:33,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:33,198 INFO L93 Difference]: Finished difference Result 760 states and 1243 transitions. [2024-12-02 11:54:33,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:54:33,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-12-02 11:54:33,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:33,200 INFO L225 Difference]: With dead ends: 760 [2024-12-02 11:54:33,200 INFO L226 Difference]: Without dead ends: 514 [2024-12-02 11:54:33,201 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:54:33,202 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 93 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:33,203 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 360 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:54:33,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2024-12-02 11:54:33,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 508. [2024-12-02 11:54:33,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 507 states have (on average 1.6193293885601578) internal successors, (821), 507 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:33,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 821 transitions. [2024-12-02 11:54:33,229 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 821 transitions. Word has length 64 [2024-12-02 11:54:33,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:33,229 INFO L471 AbstractCegarLoop]: Abstraction has 508 states and 821 transitions. [2024-12-02 11:54:33,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:33,230 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 821 transitions. [2024-12-02 11:54:33,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-12-02 11:54:33,231 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:33,231 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:33,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 11:54:33,231 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:33,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:33,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1580383499, now seen corresponding path program 1 times [2024-12-02 11:54:33,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:33,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054590530] [2024-12-02 11:54:33,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:33,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:33,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:54:33,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:33,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054590530] [2024-12-02 11:54:33,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054590530] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:33,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:33,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 11:54:33,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128430105] [2024-12-02 11:54:33,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:33,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:54:33,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:33,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:54:33,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:54:33,397 INFO L87 Difference]: Start difference. First operand 508 states and 821 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:33,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:33,616 INFO L93 Difference]: Finished difference Result 2184 states and 3627 transitions. [2024-12-02 11:54:33,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 11:54:33,616 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2024-12-02 11:54:33,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:33,623 INFO L225 Difference]: With dead ends: 2184 [2024-12-02 11:54:33,623 INFO L226 Difference]: Without dead ends: 1730 [2024-12-02 11:54:33,624 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:54:33,625 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 816 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:33,626 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 1120 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:54:33,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2024-12-02 11:54:33,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 906. [2024-12-02 11:54:33,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 905 states have (on average 1.6331491712707182) internal successors, (1478), 905 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:33,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1478 transitions. [2024-12-02 11:54:33,660 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1478 transitions. Word has length 66 [2024-12-02 11:54:33,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:33,660 INFO L471 AbstractCegarLoop]: Abstraction has 906 states and 1478 transitions. [2024-12-02 11:54:33,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:33,660 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1478 transitions. [2024-12-02 11:54:33,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-02 11:54:33,661 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:33,661 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:33,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 11:54:33,662 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:33,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:33,662 INFO L85 PathProgramCache]: Analyzing trace with hash 624886438, now seen corresponding path program 1 times [2024-12-02 11:54:33,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:33,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394375019] [2024-12-02 11:54:33,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:33,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:33,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:33,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:54:33,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:33,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394375019] [2024-12-02 11:54:33,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394375019] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:33,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:33,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:54:33,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470649818] [2024-12-02 11:54:33,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:33,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:54:33,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:33,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:54:33,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:54:33,758 INFO L87 Difference]: Start difference. First operand 906 states and 1478 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:33,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:33,869 INFO L93 Difference]: Finished difference Result 2648 states and 4388 transitions. [2024-12-02 11:54:33,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:54:33,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2024-12-02 11:54:33,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:33,874 INFO L225 Difference]: With dead ends: 2648 [2024-12-02 11:54:33,874 INFO L226 Difference]: Without dead ends: 1796 [2024-12-02 11:54:33,875 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:54:33,876 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 357 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:33,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 635 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:54:33,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1796 states. [2024-12-02 11:54:33,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1796 to 1342. [2024-12-02 11:54:33,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1342 states, 1341 states have (on average 1.6413124533929904) internal successors, (2201), 1341 states have internal predecessors, (2201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:33,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 2201 transitions. [2024-12-02 11:54:33,920 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 2201 transitions. Word has length 67 [2024-12-02 11:54:33,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:33,921 INFO L471 AbstractCegarLoop]: Abstraction has 1342 states and 2201 transitions. [2024-12-02 11:54:33,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:33,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 2201 transitions. [2024-12-02 11:54:33,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-02 11:54:33,922 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:33,922 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:33,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 11:54:33,923 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:33,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:33,923 INFO L85 PathProgramCache]: Analyzing trace with hash 437782092, now seen corresponding path program 1 times [2024-12-02 11:54:33,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:33,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500404026] [2024-12-02 11:54:33,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:33,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:33,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:34,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:54:34,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:34,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500404026] [2024-12-02 11:54:34,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500404026] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:34,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:34,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:54:34,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815516671] [2024-12-02 11:54:34,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:34,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:54:34,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:34,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:54:34,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:54:34,012 INFO L87 Difference]: Start difference. First operand 1342 states and 2201 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:34,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:34,122 INFO L93 Difference]: Finished difference Result 3902 states and 6452 transitions. [2024-12-02 11:54:34,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:54:34,123 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2024-12-02 11:54:34,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:34,133 INFO L225 Difference]: With dead ends: 3902 [2024-12-02 11:54:34,133 INFO L226 Difference]: Without dead ends: 2614 [2024-12-02 11:54:34,135 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:54:34,136 INFO L435 NwaCegarLoop]: 186 mSDtfsCounter, 357 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:34,136 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 590 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:54:34,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2614 states. [2024-12-02 11:54:34,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2614 to 1966. [2024-12-02 11:54:34,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1966 states, 1965 states have (on average 1.6391857506361323) internal successors, (3221), 1965 states have internal predecessors, (3221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:34,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 3221 transitions. [2024-12-02 11:54:34,225 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 3221 transitions. Word has length 68 [2024-12-02 11:54:34,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:34,226 INFO L471 AbstractCegarLoop]: Abstraction has 1966 states and 3221 transitions. [2024-12-02 11:54:34,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:34,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 3221 transitions. [2024-12-02 11:54:34,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-02 11:54:34,228 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:34,228 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:34,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 11:54:34,228 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:34,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:34,229 INFO L85 PathProgramCache]: Analyzing trace with hash -898480995, now seen corresponding path program 1 times [2024-12-02 11:54:34,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:34,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298185169] [2024-12-02 11:54:34,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:34,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:34,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:54:34,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:34,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298185169] [2024-12-02 11:54:34,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298185169] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:34,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:34,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:54:34,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78509995] [2024-12-02 11:54:34,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:34,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:54:34,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:34,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:54:34,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:54:34,343 INFO L87 Difference]: Start difference. First operand 1966 states and 3221 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 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 11:54:34,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:34,500 INFO L93 Difference]: Finished difference Result 5686 states and 9376 transitions. [2024-12-02 11:54:34,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:54:34,500 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 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 69 [2024-12-02 11:54:34,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:34,515 INFO L225 Difference]: With dead ends: 5686 [2024-12-02 11:54:34,515 INFO L226 Difference]: Without dead ends: 3774 [2024-12-02 11:54:34,518 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:54:34,519 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 355 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:34,519 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 643 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:54:34,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3774 states. [2024-12-02 11:54:34,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3774 to 2854. [2024-12-02 11:54:34,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2854 states, 2853 states have (on average 1.6358219418156326) internal successors, (4667), 2853 states have internal predecessors, (4667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:34,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2854 states to 2854 states and 4667 transitions. [2024-12-02 11:54:34,638 INFO L78 Accepts]: Start accepts. Automaton has 2854 states and 4667 transitions. Word has length 69 [2024-12-02 11:54:34,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:34,638 INFO L471 AbstractCegarLoop]: Abstraction has 2854 states and 4667 transitions. [2024-12-02 11:54:34,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 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 11:54:34,638 INFO L276 IsEmpty]: Start isEmpty. Operand 2854 states and 4667 transitions. [2024-12-02 11:54:34,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-02 11:54:34,640 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:34,640 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:34,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 11:54:34,640 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:34,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:34,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1259123890, now seen corresponding path program 1 times [2024-12-02 11:54:34,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:34,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883682849] [2024-12-02 11:54:34,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:34,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:34,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:34,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:54:34,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:34,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883682849] [2024-12-02 11:54:34,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883682849] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:34,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:34,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:54:34,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227403948] [2024-12-02 11:54:34,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:34,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:54:34,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:34,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:54:34,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:54:34,730 INFO L87 Difference]: Start difference. First operand 2854 states and 4667 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:34,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:34,828 INFO L93 Difference]: Finished difference Result 6544 states and 10698 transitions. [2024-12-02 11:54:34,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:54:34,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2024-12-02 11:54:34,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:34,843 INFO L225 Difference]: With dead ends: 6544 [2024-12-02 11:54:34,843 INFO L226 Difference]: Without dead ends: 4506 [2024-12-02 11:54:34,847 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:54:34,847 INFO L435 NwaCegarLoop]: 229 mSDtfsCounter, 92 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:34,848 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 401 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:54:34,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4506 states. [2024-12-02 11:54:34,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4506 to 4504. [2024-12-02 11:54:34,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4504 states, 4503 states have (on average 1.6193648678658672) internal successors, (7292), 4503 states have internal predecessors, (7292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:35,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4504 states to 4504 states and 7292 transitions. [2024-12-02 11:54:35,012 INFO L78 Accepts]: Start accepts. Automaton has 4504 states and 7292 transitions. Word has length 70 [2024-12-02 11:54:35,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:35,012 INFO L471 AbstractCegarLoop]: Abstraction has 4504 states and 7292 transitions. [2024-12-02 11:54:35,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:35,012 INFO L276 IsEmpty]: Start isEmpty. Operand 4504 states and 7292 transitions. [2024-12-02 11:54:35,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-02 11:54:35,014 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:35,014 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:35,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 11:54:35,014 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:35,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:35,015 INFO L85 PathProgramCache]: Analyzing trace with hash 953540750, now seen corresponding path program 1 times [2024-12-02 11:54:35,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:35,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303066012] [2024-12-02 11:54:35,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:35,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:35,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:35,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:54:35,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:35,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303066012] [2024-12-02 11:54:35,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303066012] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:35,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:35,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:54:35,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500242404] [2024-12-02 11:54:35,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:35,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:54:35,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:35,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:54:35,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:54:35,100 INFO L87 Difference]: Start difference. First operand 4504 states and 7292 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:35,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:35,206 INFO L93 Difference]: Finished difference Result 9920 states and 16098 transitions. [2024-12-02 11:54:35,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:54:35,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2024-12-02 11:54:35,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:35,221 INFO L225 Difference]: With dead ends: 9920 [2024-12-02 11:54:35,221 INFO L226 Difference]: Without dead ends: 6726 [2024-12-02 11:54:35,225 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:54:35,225 INFO L435 NwaCegarLoop]: 258 mSDtfsCounter, 98 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:35,226 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 429 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:54:35,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6726 states. [2024-12-02 11:54:35,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6726 to 6724. [2024-12-02 11:54:35,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6724 states, 6723 states have (on average 1.6085081065000744) internal successors, (10814), 6723 states have internal predecessors, (10814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:35,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6724 states to 6724 states and 10814 transitions. [2024-12-02 11:54:35,380 INFO L78 Accepts]: Start accepts. Automaton has 6724 states and 10814 transitions. Word has length 70 [2024-12-02 11:54:35,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:35,380 INFO L471 AbstractCegarLoop]: Abstraction has 6724 states and 10814 transitions. [2024-12-02 11:54:35,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:35,380 INFO L276 IsEmpty]: Start isEmpty. Operand 6724 states and 10814 transitions. [2024-12-02 11:54:35,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-02 11:54:35,381 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:35,381 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:35,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 11:54:35,381 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:35,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:35,382 INFO L85 PathProgramCache]: Analyzing trace with hash 88311246, now seen corresponding path program 1 times [2024-12-02 11:54:35,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:35,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963045786] [2024-12-02 11:54:35,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:35,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:35,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:54:35,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:35,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963045786] [2024-12-02 11:54:35,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963045786] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:35,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:35,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:54:35,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85454346] [2024-12-02 11:54:35,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:35,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:54:35,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:35,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:54:35,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:54:35,460 INFO L87 Difference]: Start difference. First operand 6724 states and 10814 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:35,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:35,587 INFO L93 Difference]: Finished difference Result 15105 states and 24502 transitions. [2024-12-02 11:54:35,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:54:35,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2024-12-02 11:54:35,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:35,618 INFO L225 Difference]: With dead ends: 15105 [2024-12-02 11:54:35,618 INFO L226 Difference]: Without dead ends: 10165 [2024-12-02 11:54:35,623 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:54:35,624 INFO L435 NwaCegarLoop]: 279 mSDtfsCounter, 104 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:35,624 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 449 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:54:35,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10165 states. [2024-12-02 11:54:35,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10165 to 10163. [2024-12-02 11:54:35,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10163 states, 10162 states have (on average 1.6012595945679984) internal successors, (16272), 10162 states have internal predecessors, (16272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:35,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10163 states to 10163 states and 16272 transitions. [2024-12-02 11:54:35,908 INFO L78 Accepts]: Start accepts. Automaton has 10163 states and 16272 transitions. Word has length 70 [2024-12-02 11:54:35,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:35,908 INFO L471 AbstractCegarLoop]: Abstraction has 10163 states and 16272 transitions. [2024-12-02 11:54:35,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:35,908 INFO L276 IsEmpty]: Start isEmpty. Operand 10163 states and 16272 transitions. [2024-12-02 11:54:35,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-12-02 11:54:35,909 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:35,909 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:35,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 11:54:35,909 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:35,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:35,910 INFO L85 PathProgramCache]: Analyzing trace with hash 2015636053, now seen corresponding path program 1 times [2024-12-02 11:54:35,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:35,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874000134] [2024-12-02 11:54:35,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:35,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:35,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:36,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:54:36,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:36,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874000134] [2024-12-02 11:54:36,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874000134] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:36,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:36,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 11:54:36,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798875623] [2024-12-02 11:54:36,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:36,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:54:36,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:36,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:54:36,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:54:36,117 INFO L87 Difference]: Start difference. First operand 10163 states and 16272 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 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 11:54:36,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:36,356 INFO L93 Difference]: Finished difference Result 20256 states and 32447 transitions. [2024-12-02 11:54:36,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:54:36,357 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 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 71 [2024-12-02 11:54:36,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:36,374 INFO L225 Difference]: With dead ends: 20256 [2024-12-02 11:54:36,374 INFO L226 Difference]: Without dead ends: 10165 [2024-12-02 11:54:36,381 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:54:36,382 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 283 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:36,382 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 519 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:54:36,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10165 states. [2024-12-02 11:54:36,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10165 to 10163. [2024-12-02 11:54:36,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10163 states, 10162 states have (on average 1.5889588663648888) internal successors, (16147), 10162 states have internal predecessors, (16147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:36,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10163 states to 10163 states and 16147 transitions. [2024-12-02 11:54:36,648 INFO L78 Accepts]: Start accepts. Automaton has 10163 states and 16147 transitions. Word has length 71 [2024-12-02 11:54:36,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:36,649 INFO L471 AbstractCegarLoop]: Abstraction has 10163 states and 16147 transitions. [2024-12-02 11:54:36,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 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 11:54:36,650 INFO L276 IsEmpty]: Start isEmpty. Operand 10163 states and 16147 transitions. [2024-12-02 11:54:36,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-12-02 11:54:36,650 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:36,650 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:36,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 11:54:36,651 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:36,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:36,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1578831279, now seen corresponding path program 1 times [2024-12-02 11:54:36,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:36,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500805540] [2024-12-02 11:54:36,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:36,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:36,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:36,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:54:36,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:36,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500805540] [2024-12-02 11:54:36,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500805540] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:36,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:36,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 11:54:36,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717491252] [2024-12-02 11:54:36,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:36,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:54:36,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:36,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:54:36,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:54:36,882 INFO L87 Difference]: Start difference. First operand 10163 states and 16147 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:37,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:37,240 INFO L93 Difference]: Finished difference Result 29132 states and 46429 transitions. [2024-12-02 11:54:37,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:54:37,241 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2024-12-02 11:54:37,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:37,292 INFO L225 Difference]: With dead ends: 29132 [2024-12-02 11:54:37,292 INFO L226 Difference]: Without dead ends: 19041 [2024-12-02 11:54:37,305 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:54:37,305 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 277 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:37,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 523 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:54:37,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19041 states. [2024-12-02 11:54:37,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19041 to 19039. [2024-12-02 11:54:37,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19039 states, 19038 states have (on average 1.5752705116083623) internal successors, (29990), 19038 states have internal predecessors, (29990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:37,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19039 states to 19039 states and 29990 transitions. [2024-12-02 11:54:37,942 INFO L78 Accepts]: Start accepts. Automaton has 19039 states and 29990 transitions. Word has length 74 [2024-12-02 11:54:37,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:37,942 INFO L471 AbstractCegarLoop]: Abstraction has 19039 states and 29990 transitions. [2024-12-02 11:54:37,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:37,943 INFO L276 IsEmpty]: Start isEmpty. Operand 19039 states and 29990 transitions. [2024-12-02 11:54:37,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-12-02 11:54:37,944 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:37,944 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:37,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 11:54:37,944 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:37,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:37,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1270553726, now seen corresponding path program 1 times [2024-12-02 11:54:37,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:37,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439200280] [2024-12-02 11:54:37,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:37,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:37,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:38,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:54:38,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:38,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439200280] [2024-12-02 11:54:38,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439200280] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:38,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:38,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 11:54:38,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587323429] [2024-12-02 11:54:38,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:38,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 11:54:38,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:38,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 11:54:38,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:54:38,452 INFO L87 Difference]: Start difference. First operand 19039 states and 29990 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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 11:54:38,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:38,845 INFO L93 Difference]: Finished difference Result 20127 states and 31439 transitions. [2024-12-02 11:54:38,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 11:54:38,846 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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 75 [2024-12-02 11:54:38,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:38,898 INFO L225 Difference]: With dead ends: 20127 [2024-12-02 11:54:38,898 INFO L226 Difference]: Without dead ends: 20125 [2024-12-02 11:54:38,902 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 11:54:38,902 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 0 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:38,902 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1312 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:54:38,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20125 states. [2024-12-02 11:54:39,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20125 to 20125. [2024-12-02 11:54:39,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20125 states, 20124 states have (on average 1.5437785728483402) internal successors, (31067), 20124 states have internal predecessors, (31067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:39,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20125 states to 20125 states and 31067 transitions. [2024-12-02 11:54:39,346 INFO L78 Accepts]: Start accepts. Automaton has 20125 states and 31067 transitions. Word has length 75 [2024-12-02 11:54:39,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:39,346 INFO L471 AbstractCegarLoop]: Abstraction has 20125 states and 31067 transitions. [2024-12-02 11:54:39,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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 11:54:39,347 INFO L276 IsEmpty]: Start isEmpty. Operand 20125 states and 31067 transitions. [2024-12-02 11:54:39,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 11:54:39,348 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:39,349 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:39,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 11:54:39,349 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:39,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:39,349 INFO L85 PathProgramCache]: Analyzing trace with hash -873839161, now seen corresponding path program 1 times [2024-12-02 11:54:39,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:39,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519975646] [2024-12-02 11:54:39,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:39,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:39,581 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-02 11:54:39,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:39,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519975646] [2024-12-02 11:54:39,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519975646] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:39,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:39,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 11:54:39,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620287929] [2024-12-02 11:54:39,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:39,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:54:39,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:39,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:54:39,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:54:39,582 INFO L87 Difference]: Start difference. First operand 20125 states and 31067 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:40,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:40,163 INFO L93 Difference]: Finished difference Result 49393 states and 76487 transitions. [2024-12-02 11:54:40,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:54:40,163 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-12-02 11:54:40,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:40,279 INFO L225 Difference]: With dead ends: 49393 [2024-12-02 11:54:40,279 INFO L226 Difference]: Without dead ends: 39811 [2024-12-02 11:54:40,298 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:54:40,299 INFO L435 NwaCegarLoop]: 310 mSDtfsCounter, 450 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:40,299 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 876 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:54:40,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39811 states. [2024-12-02 11:54:40,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39811 to 30997. [2024-12-02 11:54:40,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30997 states, 30996 states have (on average 1.541908633372048) internal successors, (47793), 30996 states have internal predecessors, (47793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:40,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30997 states to 30997 states and 47793 transitions. [2024-12-02 11:54:40,971 INFO L78 Accepts]: Start accepts. Automaton has 30997 states and 47793 transitions. Word has length 103 [2024-12-02 11:54:40,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:40,971 INFO L471 AbstractCegarLoop]: Abstraction has 30997 states and 47793 transitions. [2024-12-02 11:54:40,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:40,971 INFO L276 IsEmpty]: Start isEmpty. Operand 30997 states and 47793 transitions. [2024-12-02 11:54:40,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 11:54:40,973 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:40,973 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:40,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 11:54:40,974 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:40,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:40,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1338825479, now seen corresponding path program 1 times [2024-12-02 11:54:40,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:40,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039347345] [2024-12-02 11:54:40,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:40,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:41,137 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 11:54:41,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:41,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039347345] [2024-12-02 11:54:41,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039347345] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:41,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:41,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 11:54:41,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053556974] [2024-12-02 11:54:41,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:41,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:54:41,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:41,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:54:41,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:54:41,138 INFO L87 Difference]: Start difference. First operand 30997 states and 47793 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:41,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:41,703 INFO L93 Difference]: Finished difference Result 53257 states and 82479 transitions. [2024-12-02 11:54:41,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:54:41,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-12-02 11:54:41,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:41,800 INFO L225 Difference]: With dead ends: 53257 [2024-12-02 11:54:41,801 INFO L226 Difference]: Without dead ends: 43675 [2024-12-02 11:54:41,816 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:54:41,816 INFO L435 NwaCegarLoop]: 312 mSDtfsCounter, 444 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:41,817 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 926 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:54:41,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43675 states. [2024-12-02 11:54:42,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43675 to 42069. [2024-12-02 11:54:42,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42069 states, 42068 states have (on average 1.54238375962727) internal successors, (64885), 42068 states have internal predecessors, (64885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:42,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42069 states to 42069 states and 64885 transitions. [2024-12-02 11:54:42,495 INFO L78 Accepts]: Start accepts. Automaton has 42069 states and 64885 transitions. Word has length 103 [2024-12-02 11:54:42,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:42,495 INFO L471 AbstractCegarLoop]: Abstraction has 42069 states and 64885 transitions. [2024-12-02 11:54:42,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:42,495 INFO L276 IsEmpty]: Start isEmpty. Operand 42069 states and 64885 transitions. [2024-12-02 11:54:42,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 11:54:42,497 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:42,497 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:42,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 11:54:42,497 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:42,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:42,497 INFO L85 PathProgramCache]: Analyzing trace with hash 473595975, now seen corresponding path program 1 times [2024-12-02 11:54:42,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:42,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243798379] [2024-12-02 11:54:42,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:42,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:42,611 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 11:54:42,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:42,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243798379] [2024-12-02 11:54:42,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243798379] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:42,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:42,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 11:54:42,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273261906] [2024-12-02 11:54:42,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:42,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:54:42,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:42,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:54:42,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:54:42,612 INFO L87 Difference]: Start difference. First operand 42069 states and 64885 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:43,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:43,269 INFO L93 Difference]: Finished difference Result 59853 states and 92849 transitions. [2024-12-02 11:54:43,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 11:54:43,269 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-12-02 11:54:43,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:43,367 INFO L225 Difference]: With dead ends: 59853 [2024-12-02 11:54:43,367 INFO L226 Difference]: Without dead ends: 50011 [2024-12-02 11:54:43,383 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:54:43,384 INFO L435 NwaCegarLoop]: 295 mSDtfsCounter, 444 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:43,384 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 892 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:54:43,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50011 states. [2024-12-02 11:54:44,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50011 to 48405. [2024-12-02 11:54:44,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48405 states, 48404 states have (on average 1.5450169407486984) internal successors, (74785), 48404 states have internal predecessors, (74785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:44,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48405 states to 48405 states and 74785 transitions. [2024-12-02 11:54:44,155 INFO L78 Accepts]: Start accepts. Automaton has 48405 states and 74785 transitions. Word has length 103 [2024-12-02 11:54:44,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:44,155 INFO L471 AbstractCegarLoop]: Abstraction has 48405 states and 74785 transitions. [2024-12-02 11:54:44,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:44,156 INFO L276 IsEmpty]: Start isEmpty. Operand 48405 states and 74785 transitions. [2024-12-02 11:54:44,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 11:54:44,157 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:44,157 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:44,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 11:54:44,158 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:44,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:44,158 INFO L85 PathProgramCache]: Analyzing trace with hash -126259308, now seen corresponding path program 1 times [2024-12-02 11:54:44,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:44,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520465411] [2024-12-02 11:54:44,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:44,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:44,240 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 11:54:44,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:44,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520465411] [2024-12-02 11:54:44,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520465411] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:44,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:44,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:54:44,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019157120] [2024-12-02 11:54:44,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:44,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:54:44,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:44,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:54:44,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:54:44,242 INFO L87 Difference]: Start difference. First operand 48405 states and 74785 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:45,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:45,239 INFO L93 Difference]: Finished difference Result 79148 states and 122944 transitions. [2024-12-02 11:54:45,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:54:45,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-12-02 11:54:45,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:45,329 INFO L225 Difference]: With dead ends: 79148 [2024-12-02 11:54:45,329 INFO L226 Difference]: Without dead ends: 62970 [2024-12-02 11:54:45,350 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:54:45,351 INFO L435 NwaCegarLoop]: 303 mSDtfsCounter, 187 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:45,351 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 660 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:54:45,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62970 states. [2024-12-02 11:54:46,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62970 to 61366. [2024-12-02 11:54:46,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61366 states, 61365 states have (on average 1.5451967734050354) internal successors, (94821), 61365 states have internal predecessors, (94821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:46,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61366 states to 61366 states and 94821 transitions. [2024-12-02 11:54:46,854 INFO L78 Accepts]: Start accepts. Automaton has 61366 states and 94821 transitions. Word has length 104 [2024-12-02 11:54:46,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:46,854 INFO L471 AbstractCegarLoop]: Abstraction has 61366 states and 94821 transitions. [2024-12-02 11:54:46,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:46,855 INFO L276 IsEmpty]: Start isEmpty. Operand 61366 states and 94821 transitions. [2024-12-02 11:54:46,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 11:54:46,856 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:46,857 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:46,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 11:54:46,857 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:46,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:46,857 INFO L85 PathProgramCache]: Analyzing trace with hash 296442518, now seen corresponding path program 1 times [2024-12-02 11:54:46,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:46,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900970096] [2024-12-02 11:54:46,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:46,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:46,915 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 11:54:46,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:46,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900970096] [2024-12-02 11:54:46,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900970096] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:46,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:46,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:54:46,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138827091] [2024-12-02 11:54:46,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:46,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:54:46,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:46,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:54:46,916 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:54:46,916 INFO L87 Difference]: Start difference. First operand 61366 states and 94821 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:47,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:47,627 INFO L93 Difference]: Finished difference Result 132982 states and 206190 transitions. [2024-12-02 11:54:47,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:54:47,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-12-02 11:54:47,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:47,747 INFO L225 Difference]: With dead ends: 132982 [2024-12-02 11:54:47,747 INFO L226 Difference]: Without dead ends: 103948 [2024-12-02 11:54:47,779 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:54:47,780 INFO L435 NwaCegarLoop]: 192 mSDtfsCounter, 81 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:47,780 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 356 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:54:47,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103948 states. [2024-12-02 11:54:49,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103948 to 103670. [2024-12-02 11:54:49,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103670 states, 103669 states have (on average 1.5448301806711746) internal successors, (160151), 103669 states have internal predecessors, (160151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:49,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103670 states to 103670 states and 160151 transitions. [2024-12-02 11:54:49,482 INFO L78 Accepts]: Start accepts. Automaton has 103670 states and 160151 transitions. Word has length 104 [2024-12-02 11:54:49,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:49,482 INFO L471 AbstractCegarLoop]: Abstraction has 103670 states and 160151 transitions. [2024-12-02 11:54:49,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:49,482 INFO L276 IsEmpty]: Start isEmpty. Operand 103670 states and 160151 transitions. [2024-12-02 11:54:49,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 11:54:49,484 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:49,484 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:49,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 11:54:49,484 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:49,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:49,485 INFO L85 PathProgramCache]: Analyzing trace with hash 162897308, now seen corresponding path program 1 times [2024-12-02 11:54:49,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:49,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490188201] [2024-12-02 11:54:49,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:49,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:49,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:49,553 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 11:54:49,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:49,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490188201] [2024-12-02 11:54:49,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490188201] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:49,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:49,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:54:49,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579594057] [2024-12-02 11:54:49,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:49,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:54:49,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:49,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:54:49,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:54:49,555 INFO L87 Difference]: Start difference. First operand 103670 states and 160151 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:51,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:51,441 INFO L93 Difference]: Finished difference Result 222542 states and 344702 transitions. [2024-12-02 11:54:51,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:54:51,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-12-02 11:54:51,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:51,638 INFO L225 Difference]: With dead ends: 222542 [2024-12-02 11:54:51,638 INFO L226 Difference]: Without dead ends: 164360 [2024-12-02 11:54:51,672 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:54:51,672 INFO L435 NwaCegarLoop]: 189 mSDtfsCounter, 81 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:51,673 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 354 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:54:51,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164360 states. [2024-12-02 11:54:54,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164360 to 163957. [2024-12-02 11:54:54,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163957 states, 163956 states have (on average 1.5444021566761814) internal successors, (253214), 163956 states have internal predecessors, (253214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:54,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163957 states to 163957 states and 253214 transitions. [2024-12-02 11:54:54,347 INFO L78 Accepts]: Start accepts. Automaton has 163957 states and 253214 transitions. Word has length 105 [2024-12-02 11:54:54,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:54:54,347 INFO L471 AbstractCegarLoop]: Abstraction has 163957 states and 253214 transitions. [2024-12-02 11:54:54,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:54,347 INFO L276 IsEmpty]: Start isEmpty. Operand 163957 states and 253214 transitions. [2024-12-02 11:54:54,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 11:54:54,349 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:54:54,349 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:54:54,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 11:54:54,349 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:54:54,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:54:54,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1183965662, now seen corresponding path program 1 times [2024-12-02 11:54:54,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:54:54,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501625063] [2024-12-02 11:54:54,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:54:54,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:54:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:54:54,433 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 11:54:54,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:54:54,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501625063] [2024-12-02 11:54:54,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501625063] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:54:54,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:54:54,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:54:54,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502858649] [2024-12-02 11:54:54,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:54:54,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:54:54,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:54:54,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:54:54,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:54:54,435 INFO L87 Difference]: Start difference. First operand 163957 states and 253214 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:54:56,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:54:56,760 INFO L93 Difference]: Finished difference Result 273908 states and 424327 transitions. [2024-12-02 11:54:56,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:54:56,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-12-02 11:54:56,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:54:57,085 INFO L225 Difference]: With dead ends: 273908 [2024-12-02 11:54:57,085 INFO L226 Difference]: Without dead ends: 213940 [2024-12-02 11:54:57,146 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:54:57,147 INFO L435 NwaCegarLoop]: 299 mSDtfsCounter, 192 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:54:57,148 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 653 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:54:57,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213940 states. [2024-12-02 11:55:00,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213940 to 201105. [2024-12-02 11:55:00,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201105 states, 201104 states have (on average 1.5416848993555574) internal successors, (310039), 201104 states have internal predecessors, (310039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:55:01,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201105 states to 201105 states and 310039 transitions. [2024-12-02 11:55:01,195 INFO L78 Accepts]: Start accepts. Automaton has 201105 states and 310039 transitions. Word has length 105 [2024-12-02 11:55:01,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:55:01,195 INFO L471 AbstractCegarLoop]: Abstraction has 201105 states and 310039 transitions. [2024-12-02 11:55:01,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:55:01,195 INFO L276 IsEmpty]: Start isEmpty. Operand 201105 states and 310039 transitions. [2024-12-02 11:55:01,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 11:55:01,197 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:55:01,197 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:55:01,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 11:55:01,197 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:55:01,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:55:01,198 INFO L85 PathProgramCache]: Analyzing trace with hash 874841087, now seen corresponding path program 1 times [2024-12-02 11:55:01,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:55:01,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872847725] [2024-12-02 11:55:01,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:55:01,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:55:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:55:01,262 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:55:01,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:55:01,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872847725] [2024-12-02 11:55:01,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872847725] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:55:01,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:55:01,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:55:01,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794174750] [2024-12-02 11:55:01,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:55:01,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:55:01,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:55:01,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:55:01,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:55:01,264 INFO L87 Difference]: Start difference. First operand 201105 states and 310039 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:55:05,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:55:05,349 INFO L93 Difference]: Finished difference Result 598934 states and 921405 transitions. [2024-12-02 11:55:05,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:55:05,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-12-02 11:55:05,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:55:05,935 INFO L225 Difference]: With dead ends: 598934 [2024-12-02 11:55:05,935 INFO L226 Difference]: Without dead ends: 397901 [2024-12-02 11:55:06,157 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:55:06,157 INFO L435 NwaCegarLoop]: 272 mSDtfsCounter, 145 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:55:06,158 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 460 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:55:06,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397901 states. [2024-12-02 11:55:12,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397901 to 397899. [2024-12-02 11:55:12,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397899 states, 397898 states have (on average 1.5259362952314413) internal successors, (607167), 397898 states have internal predecessors, (607167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:55:13,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397899 states to 397899 states and 607167 transitions. [2024-12-02 11:55:13,934 INFO L78 Accepts]: Start accepts. Automaton has 397899 states and 607167 transitions. Word has length 105 [2024-12-02 11:55:13,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:55:13,934 INFO L471 AbstractCegarLoop]: Abstraction has 397899 states and 607167 transitions. [2024-12-02 11:55:13,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:55:13,935 INFO L276 IsEmpty]: Start isEmpty. Operand 397899 states and 607167 transitions. [2024-12-02 11:55:13,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 11:55:13,938 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:55:13,938 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:55:13,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 11:55:13,938 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:55:13,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:55:13,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1806663769, now seen corresponding path program 1 times [2024-12-02 11:55:13,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:55:13,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125861752] [2024-12-02 11:55:13,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:55:13,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:55:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:55:14,008 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:55:14,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:55:14,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125861752] [2024-12-02 11:55:14,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125861752] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:55:14,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:55:14,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:55:14,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697086813] [2024-12-02 11:55:14,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:55:14,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:55:14,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:55:14,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:55:14,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:55:14,010 INFO L87 Difference]: Start difference. First operand 397899 states and 607167 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:55:22,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:55:22,098 INFO L93 Difference]: Finished difference Result 1185309 states and 1804815 transitions. [2024-12-02 11:55:22,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:55:22,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-12-02 11:55:22,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:55:23,365 INFO L225 Difference]: With dead ends: 1185309 [2024-12-02 11:55:23,366 INFO L226 Difference]: Without dead ends: 787529 [2024-12-02 11:55:23,567 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:55:23,567 INFO L435 NwaCegarLoop]: 246 mSDtfsCounter, 126 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:55:23,568 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 434 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:55:24,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787529 states. [2024-12-02 11:55:36,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787529 to 787527. [2024-12-02 11:55:36,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787527 states, 787526 states have (on average 1.5105063197913466) internal successors, (1189563), 787526 states have internal predecessors, (1189563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:55:38,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787527 states to 787527 states and 1189563 transitions. [2024-12-02 11:55:38,371 INFO L78 Accepts]: Start accepts. Automaton has 787527 states and 1189563 transitions. Word has length 105 [2024-12-02 11:55:38,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:55:38,371 INFO L471 AbstractCegarLoop]: Abstraction has 787527 states and 1189563 transitions. [2024-12-02 11:55:38,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:55:38,371 INFO L276 IsEmpty]: Start isEmpty. Operand 787527 states and 1189563 transitions. [2024-12-02 11:55:38,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-12-02 11:55:38,376 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:55:38,376 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:55:38,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 11:55:38,376 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:55:38,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:55:38,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1683352527, now seen corresponding path program 1 times [2024-12-02 11:55:38,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:55:38,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111488089] [2024-12-02 11:55:38,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:55:38,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:55:38,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:55:38,472 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:55:38,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:55:38,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111488089] [2024-12-02 11:55:38,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111488089] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:55:38,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:55:38,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:55:38,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851646378] [2024-12-02 11:55:38,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:55:38,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:55:38,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:55:38,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:55:38,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:55:38,476 INFO L87 Difference]: Start difference. First operand 787527 states and 1189563 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:55:46,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:55:46,718 INFO L93 Difference]: Finished difference Result 1176995 states and 1771453 transitions. [2024-12-02 11:55:46,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:55:46,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2024-12-02 11:55:46,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:55:48,071 INFO L225 Difference]: With dead ends: 1176995 [2024-12-02 11:55:48,071 INFO L226 Difference]: Without dead ends: 787642 [2024-12-02 11:55:48,269 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:55:48,270 INFO L435 NwaCegarLoop]: 360 mSDtfsCounter, 133 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:55:48,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 544 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:55:48,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787642 states. [2024-12-02 11:56:00,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787642 to 787640. [2024-12-02 11:56:00,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787640 states, 787639 states have (on average 1.4995600776497862) internal successors, (1181112), 787639 states have internal predecessors, (1181112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:56:02,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787640 states to 787640 states and 1181112 transitions. [2024-12-02 11:56:02,195 INFO L78 Accepts]: Start accepts. Automaton has 787640 states and 1181112 transitions. Word has length 106 [2024-12-02 11:56:02,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:56:02,195 INFO L471 AbstractCegarLoop]: Abstraction has 787640 states and 1181112 transitions. [2024-12-02 11:56:02,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:56:02,196 INFO L276 IsEmpty]: Start isEmpty. Operand 787640 states and 1181112 transitions. [2024-12-02 11:56:02,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-12-02 11:56:02,200 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:56:02,200 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:56:02,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 11:56:02,200 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:56:02,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:56:02,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1870825333, now seen corresponding path program 1 times [2024-12-02 11:56:02,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:56:02,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007065988] [2024-12-02 11:56:02,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:56:02,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:56:02,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:56:02,318 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-02 11:56:02,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:56:02,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007065988] [2024-12-02 11:56:02,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007065988] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:56:02,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:56:02,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:56:02,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061687251] [2024-12-02 11:56:02,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:56:02,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:56:02,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:56:02,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:56:02,320 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:56:02,320 INFO L87 Difference]: Start difference. First operand 787640 states and 1181112 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:56:10,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:56:10,399 INFO L93 Difference]: Finished difference Result 1147822 states and 1729771 transitions. [2024-12-02 11:56:10,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:56:10,399 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2024-12-02 11:56:10,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:56:11,885 INFO L225 Difference]: With dead ends: 1147822 [2024-12-02 11:56:11,885 INFO L226 Difference]: Without dead ends: 950532 [2024-12-02 11:56:12,027 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:56:12,028 INFO L435 NwaCegarLoop]: 301 mSDtfsCounter, 202 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:56:12,028 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 597 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:56:12,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950532 states. [2024-12-02 11:56:24,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950532 to 863168. [2024-12-02 11:56:25,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863168 states, 863167 states have (on average 1.4997051555492737) internal successors, (1294496), 863167 states have internal predecessors, (1294496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:56:26,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863168 states to 863168 states and 1294496 transitions. [2024-12-02 11:56:26,849 INFO L78 Accepts]: Start accepts. Automaton has 863168 states and 1294496 transitions. Word has length 106 [2024-12-02 11:56:26,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:56:26,849 INFO L471 AbstractCegarLoop]: Abstraction has 863168 states and 1294496 transitions. [2024-12-02 11:56:26,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:56:26,849 INFO L276 IsEmpty]: Start isEmpty. Operand 863168 states and 1294496 transitions. [2024-12-02 11:56:26,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-12-02 11:56:26,854 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:56:26,854 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:56:26,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 11:56:26,855 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:56:26,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:56:26,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1169760755, now seen corresponding path program 1 times [2024-12-02 11:56:26,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:56:26,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961774805] [2024-12-02 11:56:26,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:56:26,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:56:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:56:26,917 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-02 11:56:26,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:56:26,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961774805] [2024-12-02 11:56:26,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961774805] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:56:26,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:56:26,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:56:26,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217555244] [2024-12-02 11:56:26,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:56:26,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:56:26,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:56:26,918 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:56:26,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:56:26,918 INFO L87 Difference]: Start difference. First operand 863168 states and 1294496 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:56:39,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:56:39,025 INFO L93 Difference]: Finished difference Result 1797974 states and 2704946 transitions. [2024-12-02 11:56:39,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:56:39,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2024-12-02 11:56:39,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted.