./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.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_5ff6c7a9-5859-44a6-b52b-f8c2e43c47dc/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff6c7a9-5859-44a6-b52b-f8c2e43c47dc/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_5ff6c7a9-5859-44a6-b52b-f8c2e43c47dc/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff6c7a9-5859-44a6-b52b-f8c2e43c47dc/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff6c7a9-5859-44a6-b52b-f8c2e43c47dc/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_5ff6c7a9-5859-44a6-b52b-f8c2e43c47dc/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 b8f220cadba131cee309fef082c623cdd627c534b9e708cc4a4f1dd2aa7336b9 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 10:16:25,069 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 10:16:25,124 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff6c7a9-5859-44a6-b52b-f8c2e43c47dc/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 10:16:25,129 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 10:16:25,129 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 10:16:25,152 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 10:16:25,153 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 10:16:25,153 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 10:16:25,153 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 10:16:25,153 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 10:16:25,153 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 10:16:25,154 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 10:16:25,154 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 10:16:25,154 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 10:16:25,154 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 10:16:25,154 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 10:16:25,154 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 10:16:25,154 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 10:16:25,154 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 10:16:25,155 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 10:16:25,155 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 10:16:25,155 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 10:16:25,155 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 10:16:25,155 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 10:16:25,155 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 10:16:25,155 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 10:16:25,155 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 10:16:25,155 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 10:16:25,155 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 10:16:25,156 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:16:25,156 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:16:25,156 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:16:25,156 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:16:25,156 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 10:16:25,156 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:16:25,156 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:16:25,156 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:16:25,156 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:16:25,156 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 10:16:25,157 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 10:16:25,157 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 10:16:25,157 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 10:16:25,157 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 10:16:25,157 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 10:16:25,157 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 10:16:25,157 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 10:16:25,157 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 10:16:25,157 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 10:16:25,157 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_5ff6c7a9-5859-44a6-b52b-f8c2e43c47dc/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 -> b8f220cadba131cee309fef082c623cdd627c534b9e708cc4a4f1dd2aa7336b9 [2024-12-02 10:16:25,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 10:16:25,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 10:16:25,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 10:16:25,371 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 10:16:25,371 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 10:16:25,372 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff6c7a9-5859-44a6-b52b-f8c2e43c47dc/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2024-12-02 10:16:27,974 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff6c7a9-5859-44a6-b52b-f8c2e43c47dc/bin/uautomizer-verify-84ZbGMXZE1/data/e0db7c844/b9bcd1f932a741db8014734c05b4565c/FLAG9f38c53c2 [2024-12-02 10:16:28,179 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 10:16:28,179 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff6c7a9-5859-44a6-b52b-f8c2e43c47dc/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2024-12-02 10:16:28,188 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff6c7a9-5859-44a6-b52b-f8c2e43c47dc/bin/uautomizer-verify-84ZbGMXZE1/data/e0db7c844/b9bcd1f932a741db8014734c05b4565c/FLAG9f38c53c2 [2024-12-02 10:16:28,534 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff6c7a9-5859-44a6-b52b-f8c2e43c47dc/bin/uautomizer-verify-84ZbGMXZE1/data/e0db7c844/b9bcd1f932a741db8014734c05b4565c [2024-12-02 10:16:28,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 10:16:28,537 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 10:16:28,538 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 10:16:28,538 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 10:16:28,542 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 10:16:28,543 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:16:28" (1/1) ... [2024-12-02 10:16:28,544 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75d9de92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:16:28, skipping insertion in model container [2024-12-02 10:16:28,544 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:16:28" (1/1) ... [2024-12-02 10:16:28,569 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 10:16:28,745 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_5ff6c7a9-5859-44a6-b52b-f8c2e43c47dc/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[6322,6335] [2024-12-02 10:16:28,775 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:16:28,787 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 10:16:28,828 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_5ff6c7a9-5859-44a6-b52b-f8c2e43c47dc/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[6322,6335] [2024-12-02 10:16:28,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:16:28,863 INFO L204 MainTranslator]: Completed translation [2024-12-02 10:16:28,863 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:16:28 WrapperNode [2024-12-02 10:16:28,864 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 10:16:28,865 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 10:16:28,865 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 10:16:28,865 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 10:16:28,871 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:16:28" (1/1) ... [2024-12-02 10:16:28,881 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:16:28" (1/1) ... [2024-12-02 10:16:28,908 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 564 [2024-12-02 10:16:28,908 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 10:16:28,909 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 10:16:28,909 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 10:16:28,909 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 10:16:28,918 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:16:28" (1/1) ... [2024-12-02 10:16:28,919 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:16:28" (1/1) ... [2024-12-02 10:16:28,922 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:16:28" (1/1) ... [2024-12-02 10:16:28,937 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 10:16:28,937 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:16:28" (1/1) ... [2024-12-02 10:16:28,937 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:16:28" (1/1) ... [2024-12-02 10:16:28,945 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:16:28" (1/1) ... [2024-12-02 10:16:28,946 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:16:28" (1/1) ... [2024-12-02 10:16:28,950 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:16:28" (1/1) ... [2024-12-02 10:16:28,952 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:16:28" (1/1) ... [2024-12-02 10:16:28,954 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:16:28" (1/1) ... [2024-12-02 10:16:28,957 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 10:16:28,957 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 10:16:28,958 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 10:16:28,958 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 10:16:28,958 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:16:28" (1/1) ... [2024-12-02 10:16:28,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:16:28,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff6c7a9-5859-44a6-b52b-f8c2e43c47dc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:16:28,989 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff6c7a9-5859-44a6-b52b-f8c2e43c47dc/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 10:16:28,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff6c7a9-5859-44a6-b52b-f8c2e43c47dc/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 10:16:29,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 10:16:29,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 10:16:29,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 10:16:29,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 10:16:29,119 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 10:16:29,120 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 10:16:29,587 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2024-12-02 10:16:29,587 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 10:16:29,598 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 10:16:29,599 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-02 10:16:29,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:16:29 BoogieIcfgContainer [2024-12-02 10:16:29,599 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 10:16:29,608 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 10:16:29,608 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 10:16:29,612 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 10:16:29,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 10:16:28" (1/3) ... [2024-12-02 10:16:29,613 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44741559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:16:29, skipping insertion in model container [2024-12-02 10:16:29,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:16:28" (2/3) ... [2024-12-02 10:16:29,613 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44741559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:16:29, skipping insertion in model container [2024-12-02 10:16:29,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:16:29" (3/3) ... [2024-12-02 10:16:29,615 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2024-12-02 10:16:29,630 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 10:16:29,633 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c that has 1 procedures, 131 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-12-02 10:16:29,685 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 10:16:29,695 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;@7f519394, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 10:16:29,695 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 10:16:29,699 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 129 states have (on average 1.7054263565891472) internal successors, (220), 130 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 10:16:29,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-12-02 10:16:29,706 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:16:29,707 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 10:16:29,707 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:16:29,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:16:29,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1065941507, now seen corresponding path program 1 times [2024-12-02 10:16:29,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:16:29,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165389761] [2024-12-02 10:16:29,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:16:29,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:16:29,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:16:30,062 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 10:16:30,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:16:30,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165389761] [2024-12-02 10:16:30,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165389761] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:16:30,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:16:30,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:16:30,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999684891] [2024-12-02 10:16:30,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:16:30,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:16:30,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:16:30,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:16:30,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:16:30,087 INFO L87 Difference]: Start difference. First operand has 131 states, 129 states have (on average 1.7054263565891472) internal successors, (220), 130 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) 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 10:16:30,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:16:30,149 INFO L93 Difference]: Finished difference Result 307 states and 498 transitions. [2024-12-02 10:16:30,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:16:30,152 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 10:16:30,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:16:30,160 INFO L225 Difference]: With dead ends: 307 [2024-12-02 10:16:30,160 INFO L226 Difference]: Without dead ends: 205 [2024-12-02 10:16:30,163 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 10:16:30,165 INFO L435 NwaCegarLoop]: 318 mSDtfsCounter, 158 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:16:30,166 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 467 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:16:30,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-12-02 10:16:30,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 203. [2024-12-02 10:16:30,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 1.5) internal successors, (303), 202 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:30,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 303 transitions. [2024-12-02 10:16:30,200 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 303 transitions. Word has length 60 [2024-12-02 10:16:30,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:16:30,200 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 303 transitions. [2024-12-02 10:16:30,201 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 10:16:30,201 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 303 transitions. [2024-12-02 10:16:30,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-12-02 10:16:30,202 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:16:30,202 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] [2024-12-02 10:16:30,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 10:16:30,202 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:16:30,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:16:30,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1987406881, now seen corresponding path program 1 times [2024-12-02 10:16:30,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:16:30,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260443461] [2024-12-02 10:16:30,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:16:30,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:16:30,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:16:30,352 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 10:16:30,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:16:30,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260443461] [2024-12-02 10:16:30,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260443461] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:16:30,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:16:30,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:16:30,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212877303] [2024-12-02 10:16:30,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:16:30,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:16:30,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:16:30,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:16:30,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:16:30,355 INFO L87 Difference]: Start difference. First operand 203 states and 303 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:30,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:16:30,389 INFO L93 Difference]: Finished difference Result 507 states and 787 transitions. [2024-12-02 10:16:30,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:16:30,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-12-02 10:16:30,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:16:30,392 INFO L225 Difference]: With dead ends: 507 [2024-12-02 10:16:30,392 INFO L226 Difference]: Without dead ends: 339 [2024-12-02 10:16:30,393 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 10:16:30,393 INFO L435 NwaCegarLoop]: 261 mSDtfsCounter, 127 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 402 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 10:16:30,393 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 402 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:16:30,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2024-12-02 10:16:30,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 337. [2024-12-02 10:16:30,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 1.5357142857142858) internal successors, (516), 336 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:30,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 516 transitions. [2024-12-02 10:16:30,409 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 516 transitions. Word has length 61 [2024-12-02 10:16:30,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:16:30,409 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 516 transitions. [2024-12-02 10:16:30,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:30,410 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 516 transitions. [2024-12-02 10:16:30,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-02 10:16:30,411 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:16:30,411 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 10:16:30,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 10:16:30,411 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:16:30,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:16:30,412 INFO L85 PathProgramCache]: Analyzing trace with hash 175155952, now seen corresponding path program 1 times [2024-12-02 10:16:30,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:16:30,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386666349] [2024-12-02 10:16:30,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:16:30,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:16:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:16:30,522 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 10:16:30,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:16:30,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386666349] [2024-12-02 10:16:30,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386666349] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:16:30,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:16:30,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:16:30,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698663953] [2024-12-02 10:16:30,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:16:30,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:16:30,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:16:30,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:16:30,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:16:30,524 INFO L87 Difference]: Start difference. First operand 337 states and 516 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 10:16:30,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:16:30,556 INFO L93 Difference]: Finished difference Result 877 states and 1374 transitions. [2024-12-02 10:16:30,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:16:30,557 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 10:16:30,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:16:30,559 INFO L225 Difference]: With dead ends: 877 [2024-12-02 10:16:30,559 INFO L226 Difference]: Without dead ends: 575 [2024-12-02 10:16:30,560 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 10:16:30,561 INFO L435 NwaCegarLoop]: 242 mSDtfsCounter, 122 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 387 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 10:16:30,561 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 387 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:16:30,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2024-12-02 10:16:30,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 573. [2024-12-02 10:16:30,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 572 states have (on average 1.5524475524475525) internal successors, (888), 572 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:30,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 888 transitions. [2024-12-02 10:16:30,584 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 888 transitions. Word has length 62 [2024-12-02 10:16:30,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:16:30,584 INFO L471 AbstractCegarLoop]: Abstraction has 573 states and 888 transitions. [2024-12-02 10:16:30,584 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 10:16:30,584 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 888 transitions. [2024-12-02 10:16:30,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 10:16:30,585 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:16:30,585 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] [2024-12-02 10:16:30,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 10:16:30,586 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:16:30,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:16:30,586 INFO L85 PathProgramCache]: Analyzing trace with hash -546721508, now seen corresponding path program 1 times [2024-12-02 10:16:30,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:16:30,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743870514] [2024-12-02 10:16:30,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:16:30,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:16:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:16:30,684 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 10:16:30,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:16:30,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743870514] [2024-12-02 10:16:30,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743870514] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:16:30,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:16:30,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:16:30,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602296795] [2024-12-02 10:16:30,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:16:30,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:16:30,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:16:30,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:16:30,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:16:30,686 INFO L87 Difference]: Start difference. First operand 573 states and 888 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:30,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:16:30,717 INFO L93 Difference]: Finished difference Result 1521 states and 2386 transitions. [2024-12-02 10:16:30,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:16:30,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-12-02 10:16:30,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:16:30,721 INFO L225 Difference]: With dead ends: 1521 [2024-12-02 10:16:30,722 INFO L226 Difference]: Without dead ends: 983 [2024-12-02 10:16:30,722 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 10:16:30,723 INFO L435 NwaCegarLoop]: 223 mSDtfsCounter, 117 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 372 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 10:16:30,724 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 372 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:16:30,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2024-12-02 10:16:30,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 981. [2024-12-02 10:16:30,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 980 states have (on average 1.5551020408163265) internal successors, (1524), 980 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:30,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1524 transitions. [2024-12-02 10:16:30,764 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1524 transitions. Word has length 63 [2024-12-02 10:16:30,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:16:30,764 INFO L471 AbstractCegarLoop]: Abstraction has 981 states and 1524 transitions. [2024-12-02 10:16:30,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:30,764 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1524 transitions. [2024-12-02 10:16:30,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 10:16:30,765 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:16:30,765 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 10:16:30,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 10:16:30,766 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:16:30,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:16:30,766 INFO L85 PathProgramCache]: Analyzing trace with hash -8861705, now seen corresponding path program 1 times [2024-12-02 10:16:30,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:16:30,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573911557] [2024-12-02 10:16:30,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:16:30,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:16:30,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:16:30,956 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 10:16:30,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:16:30,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573911557] [2024-12-02 10:16:30,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573911557] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:16:30,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:16:30,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 10:16:30,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785553293] [2024-12-02 10:16:30,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:16:30,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:16:30,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:16:30,958 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:16:30,958 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:16:30,958 INFO L87 Difference]: Start difference. First operand 981 states and 1524 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 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 10:16:31,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:16:31,169 INFO L93 Difference]: Finished difference Result 6657 states and 10458 transitions. [2024-12-02 10:16:31,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:16:31,169 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 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 10:16:31,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:16:31,189 INFO L225 Difference]: With dead ends: 6657 [2024-12-02 10:16:31,190 INFO L226 Difference]: Without dead ends: 5711 [2024-12-02 10:16:31,191 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-12-02 10:16:31,192 INFO L435 NwaCegarLoop]: 181 mSDtfsCounter, 1940 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1940 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:16:31,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1940 Valid, 1661 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:16:31,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5711 states. [2024-12-02 10:16:31,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5711 to 1925. [2024-12-02 10:16:31,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1925 states, 1924 states have (on average 1.5488565488565489) internal successors, (2980), 1924 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:31,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 2980 transitions. [2024-12-02 10:16:31,312 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 2980 transitions. Word has length 64 [2024-12-02 10:16:31,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:16:31,312 INFO L471 AbstractCegarLoop]: Abstraction has 1925 states and 2980 transitions. [2024-12-02 10:16:31,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 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 10:16:31,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 2980 transitions. [2024-12-02 10:16:31,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-12-02 10:16:31,314 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:16:31,314 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] [2024-12-02 10:16:31,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 10:16:31,314 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:16:31,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:16:31,315 INFO L85 PathProgramCache]: Analyzing trace with hash -294169095, now seen corresponding path program 1 times [2024-12-02 10:16:31,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:16:31,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096691167] [2024-12-02 10:16:31,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:16:31,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:16:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:16:31,615 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 10:16:31,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:16:31,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096691167] [2024-12-02 10:16:31,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096691167] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:16:31,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:16:31,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 10:16:31,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23423098] [2024-12-02 10:16:31,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:16:31,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:16:31,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:16:31,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:16:31,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:16:31,617 INFO L87 Difference]: Start difference. First operand 1925 states and 2980 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:31,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:16:31,808 INFO L93 Difference]: Finished difference Result 10095 states and 15593 transitions. [2024-12-02 10:16:31,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:16:31,808 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-12-02 10:16:31,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:16:31,836 INFO L225 Difference]: With dead ends: 10095 [2024-12-02 10:16:31,836 INFO L226 Difference]: Without dead ends: 8205 [2024-12-02 10:16:31,841 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:16:31,842 INFO L435 NwaCegarLoop]: 489 mSDtfsCounter, 627 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:16:31,842 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 1025 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:16:31,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8205 states. [2024-12-02 10:16:32,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8205 to 8197. [2024-12-02 10:16:32,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8197 states, 8196 states have (on average 1.5387994143484627) internal successors, (12612), 8196 states have internal predecessors, (12612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:32,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8197 states to 8197 states and 12612 transitions. [2024-12-02 10:16:32,090 INFO L78 Accepts]: Start accepts. Automaton has 8197 states and 12612 transitions. Word has length 65 [2024-12-02 10:16:32,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:16:32,090 INFO L471 AbstractCegarLoop]: Abstraction has 8197 states and 12612 transitions. [2024-12-02 10:16:32,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:32,091 INFO L276 IsEmpty]: Start isEmpty. Operand 8197 states and 12612 transitions. [2024-12-02 10:16:32,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-12-02 10:16:32,092 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:16:32,092 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] [2024-12-02 10:16:32,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 10:16:32,092 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:16:32,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:16:32,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1075132642, now seen corresponding path program 1 times [2024-12-02 10:16:32,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:16:32,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586124028] [2024-12-02 10:16:32,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:16:32,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:16:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:16:32,195 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 10:16:32,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:16:32,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586124028] [2024-12-02 10:16:32,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586124028] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:16:32,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:16:32,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:16:32,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763988563] [2024-12-02 10:16:32,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:16:32,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:16:32,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:16:32,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:16:32,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:16:32,196 INFO L87 Difference]: Start difference. First operand 8197 states and 12612 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:32,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:16:32,265 INFO L93 Difference]: Finished difference Result 22761 states and 34886 transitions. [2024-12-02 10:16:32,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:16:32,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-12-02 10:16:32,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:16:32,304 INFO L225 Difference]: With dead ends: 22761 [2024-12-02 10:16:32,304 INFO L226 Difference]: Without dead ends: 14599 [2024-12-02 10:16:32,312 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 10:16:32,313 INFO L435 NwaCegarLoop]: 309 mSDtfsCounter, 136 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 450 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 10:16:32,313 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 450 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:16:32,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14599 states. [2024-12-02 10:16:32,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14599 to 14597. [2024-12-02 10:16:32,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14597 states, 14596 states have (on average 1.5174020279528637) internal successors, (22148), 14596 states have internal predecessors, (22148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:32,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14597 states to 14597 states and 22148 transitions. [2024-12-02 10:16:32,601 INFO L78 Accepts]: Start accepts. Automaton has 14597 states and 22148 transitions. Word has length 65 [2024-12-02 10:16:32,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:16:32,602 INFO L471 AbstractCegarLoop]: Abstraction has 14597 states and 22148 transitions. [2024-12-02 10:16:32,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:32,602 INFO L276 IsEmpty]: Start isEmpty. Operand 14597 states and 22148 transitions. [2024-12-02 10:16:32,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-02 10:16:32,603 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:16:32,603 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 10:16:32,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 10:16:32,603 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:16:32,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:16:32,604 INFO L85 PathProgramCache]: Analyzing trace with hash -938816400, now seen corresponding path program 1 times [2024-12-02 10:16:32,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:16:32,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020729318] [2024-12-02 10:16:32,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:16:32,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:16:32,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:16:32,742 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 10:16:32,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:16:32,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020729318] [2024-12-02 10:16:32,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020729318] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:16:32,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:16:32,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:16:32,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359444216] [2024-12-02 10:16:32,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:16:32,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:16:32,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:16:32,743 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:16:32,743 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:16:32,744 INFO L87 Difference]: Start difference. First operand 14597 states and 22148 transitions. Second operand has 5 states, 5 states have (on average 13.4) 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 10:16:33,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:16:33,020 INFO L93 Difference]: Finished difference Result 43721 states and 66374 transitions. [2024-12-02 10:16:33,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:16:33,021 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) 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 10:16:33,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:16:33,081 INFO L225 Difference]: With dead ends: 43721 [2024-12-02 10:16:33,081 INFO L226 Difference]: Without dead ends: 29159 [2024-12-02 10:16:33,096 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:16:33,096 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 777 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 10:16:33,097 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [777 Valid, 212 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 10:16:33,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29159 states. [2024-12-02 10:16:33,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29159 to 29157. [2024-12-02 10:16:33,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29157 states, 29156 states have (on average 1.509260529565098) internal successors, (44004), 29156 states have internal predecessors, (44004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:33,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29157 states to 29157 states and 44004 transitions. [2024-12-02 10:16:33,534 INFO L78 Accepts]: Start accepts. Automaton has 29157 states and 44004 transitions. Word has length 67 [2024-12-02 10:16:33,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:16:33,534 INFO L471 AbstractCegarLoop]: Abstraction has 29157 states and 44004 transitions. [2024-12-02 10:16:33,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) 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 10:16:33,535 INFO L276 IsEmpty]: Start isEmpty. Operand 29157 states and 44004 transitions. [2024-12-02 10:16:33,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-02 10:16:33,536 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:16:33,536 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:16:33,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 10:16:33,536 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:16:33,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:16:33,537 INFO L85 PathProgramCache]: Analyzing trace with hash 831155307, now seen corresponding path program 1 times [2024-12-02 10:16:33,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:16:33,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254539278] [2024-12-02 10:16:33,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:16:33,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:16:33,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:16:33,964 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 10:16:33,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:16:33,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254539278] [2024-12-02 10:16:33,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254539278] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:16:33,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:16:33,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:16:33,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361457535] [2024-12-02 10:16:33,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:16:33,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:16:33,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:16:33,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:16:33,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:16:33,966 INFO L87 Difference]: Start difference. First operand 29157 states and 44004 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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 10:16:34,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:16:34,082 INFO L93 Difference]: Finished difference Result 30439 states and 45925 transitions. [2024-12-02 10:16:34,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:16:34,082 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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 10:16:34,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:16:34,156 INFO L225 Difference]: With dead ends: 30439 [2024-12-02 10:16:34,156 INFO L226 Difference]: Without dead ends: 30437 [2024-12-02 10:16:34,165 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 10:16:34,165 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 0 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:16:34,166 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 709 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:16:34,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30437 states. [2024-12-02 10:16:34,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30437 to 30437. [2024-12-02 10:16:34,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30437 states, 30436 states have (on average 1.4878433434091207) internal successors, (45284), 30436 states have internal predecessors, (45284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:34,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30437 states to 30437 states and 45284 transitions. [2024-12-02 10:16:34,509 INFO L78 Accepts]: Start accepts. Automaton has 30437 states and 45284 transitions. Word has length 67 [2024-12-02 10:16:34,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:16:34,509 INFO L471 AbstractCegarLoop]: Abstraction has 30437 states and 45284 transitions. [2024-12-02 10:16:34,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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 10:16:34,509 INFO L276 IsEmpty]: Start isEmpty. Operand 30437 states and 45284 transitions. [2024-12-02 10:16:34,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-02 10:16:34,510 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:16:34,510 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 10:16:34,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 10:16:34,510 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:16:34,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:16:34,510 INFO L85 PathProgramCache]: Analyzing trace with hash 6583829, now seen corresponding path program 1 times [2024-12-02 10:16:34,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:16:34,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163386107] [2024-12-02 10:16:34,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:16:34,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:16:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:16:34,588 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 10:16:34,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:16:34,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163386107] [2024-12-02 10:16:34,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163386107] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:16:34,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:16:34,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:16:34,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478808709] [2024-12-02 10:16:34,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:16:34,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:16:34,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:16:34,590 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:16:34,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:16:34,590 INFO L87 Difference]: Start difference. First operand 30437 states and 45284 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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 10:16:34,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:16:34,750 INFO L93 Difference]: Finished difference Result 74187 states and 110320 transitions. [2024-12-02 10:16:34,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:16:34,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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 10:16:34,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:16:34,822 INFO L225 Difference]: With dead ends: 74187 [2024-12-02 10:16:34,822 INFO L226 Difference]: Without dead ends: 43785 [2024-12-02 10:16:34,846 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 10:16:34,847 INFO L435 NwaCegarLoop]: 183 mSDtfsCounter, 107 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:16:34,847 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 328 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:16:34,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43785 states. [2024-12-02 10:16:35,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43785 to 43783. [2024-12-02 10:16:35,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43783 states, 43782 states have (on average 1.4796491708921475) internal successors, (64782), 43782 states have internal predecessors, (64782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:35,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43783 states to 43783 states and 64782 transitions. [2024-12-02 10:16:35,597 INFO L78 Accepts]: Start accepts. Automaton has 43783 states and 64782 transitions. Word has length 68 [2024-12-02 10:16:35,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:16:35,597 INFO L471 AbstractCegarLoop]: Abstraction has 43783 states and 64782 transitions. [2024-12-02 10:16:35,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 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 10:16:35,597 INFO L276 IsEmpty]: Start isEmpty. Operand 43783 states and 64782 transitions. [2024-12-02 10:16:35,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-12-02 10:16:35,612 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:16:35,612 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:35,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 10:16:35,613 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:16:35,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:16:35,613 INFO L85 PathProgramCache]: Analyzing trace with hash -83102152, now seen corresponding path program 1 times [2024-12-02 10:16:35,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:16:35,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436970365] [2024-12-02 10:16:35,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:16:35,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:16:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:16:35,818 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 10:16:35,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:16:35,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436970365] [2024-12-02 10:16:35,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436970365] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:16:35,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519743373] [2024-12-02 10:16:35,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:16:35,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:16:35,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff6c7a9-5859-44a6-b52b-f8c2e43c47dc/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:16:35,821 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff6c7a9-5859-44a6-b52b-f8c2e43c47dc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:16:35,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff6c7a9-5859-44a6-b52b-f8c2e43c47dc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 10:16:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:16:35,985 INFO L256 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 10:16:35,992 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:16:36,615 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:16:36,615 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:16:37,437 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:16:37,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519743373] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:16:37,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:16:37,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 7] total 15 [2024-12-02 10:16:37,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574193265] [2024-12-02 10:16:37,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:16:37,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 10:16:37,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:16:37,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 10:16:37,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2024-12-02 10:16:37,439 INFO L87 Difference]: Start difference. First operand 43783 states and 64782 transitions. Second operand has 15 states, 15 states have (on average 17.8) internal successors, (267), 15 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:38,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:16:38,333 INFO L93 Difference]: Finished difference Result 177941 states and 264054 transitions. [2024-12-02 10:16:38,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 10:16:38,334 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 17.8) internal successors, (267), 15 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-12-02 10:16:38,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:16:38,477 INFO L225 Difference]: With dead ends: 177941 [2024-12-02 10:16:38,477 INFO L226 Difference]: Without dead ends: 134195 [2024-12-02 10:16:38,514 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=175, Invalid=377, Unknown=0, NotChecked=0, Total=552 [2024-12-02 10:16:38,515 INFO L435 NwaCegarLoop]: 260 mSDtfsCounter, 2991 mSDsluCounter, 1958 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2991 SdHoareTripleChecker+Valid, 2218 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 10:16:38,515 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2991 Valid, 2218 Invalid, 158 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [35 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 10:16:38,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134195 states. [2024-12-02 10:16:39,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134195 to 119171. [2024-12-02 10:16:39,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119171 states, 119170 states have (on average 1.4725853822270705) internal successors, (175488), 119170 states have internal predecessors, (175488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:39,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119171 states to 119171 states and 175488 transitions. [2024-12-02 10:16:39,957 INFO L78 Accepts]: Start accepts. Automaton has 119171 states and 175488 transitions. Word has length 93 [2024-12-02 10:16:39,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:16:39,958 INFO L471 AbstractCegarLoop]: Abstraction has 119171 states and 175488 transitions. [2024-12-02 10:16:39,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 17.8) internal successors, (267), 15 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:39,958 INFO L276 IsEmpty]: Start isEmpty. Operand 119171 states and 175488 transitions. [2024-12-02 10:16:39,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 10:16:39,966 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:16:39,966 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:39,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff6c7a9-5859-44a6-b52b-f8c2e43c47dc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 10:16:40,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff6c7a9-5859-44a6-b52b-f8c2e43c47dc/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:16:40,167 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:16:40,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:16:40,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1524201728, now seen corresponding path program 1 times [2024-12-02 10:16:40,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:16:40,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715123551] [2024-12-02 10:16:40,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:16:40,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:16:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:16:40,245 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:16:40,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:16:40,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715123551] [2024-12-02 10:16:40,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715123551] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:16:40,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:16:40,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:16:40,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570484587] [2024-12-02 10:16:40,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:16:40,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:16:40,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:16:40,246 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:16:40,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:16:40,246 INFO L87 Difference]: Start difference. First operand 119171 states and 175488 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:40,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:16:40,855 INFO L93 Difference]: Finished difference Result 162823 states and 239402 transitions. [2024-12-02 10:16:40,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:16:40,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-12-02 10:16:40,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:16:40,966 INFO L225 Difference]: With dead ends: 162823 [2024-12-02 10:16:40,966 INFO L226 Difference]: Without dead ends: 121851 [2024-12-02 10:16:41,001 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 10:16:41,002 INFO L435 NwaCegarLoop]: 250 mSDtfsCounter, 109 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:16:41,002 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 418 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:16:41,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121851 states. [2024-12-02 10:16:42,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121851 to 119214. [2024-12-02 10:16:42,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119214 states, 119213 states have (on average 1.451393723838843) internal successors, (173025), 119213 states have internal predecessors, (173025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:42,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119214 states to 119214 states and 173025 transitions. [2024-12-02 10:16:42,248 INFO L78 Accepts]: Start accepts. Automaton has 119214 states and 173025 transitions. Word has length 94 [2024-12-02 10:16:42,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:16:42,248 INFO L471 AbstractCegarLoop]: Abstraction has 119214 states and 173025 transitions. [2024-12-02 10:16:42,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:42,248 INFO L276 IsEmpty]: Start isEmpty. Operand 119214 states and 173025 transitions. [2024-12-02 10:16:42,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 10:16:42,251 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:16:42,251 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:42,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 10:16:42,252 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:16:42,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:16:42,252 INFO L85 PathProgramCache]: Analyzing trace with hash -894082791, now seen corresponding path program 1 times [2024-12-02 10:16:42,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:16:42,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296092791] [2024-12-02 10:16:42,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:16:42,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:16:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:16:42,466 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:16:42,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:16:42,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296092791] [2024-12-02 10:16:42,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296092791] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:16:42,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:16:42,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:16:42,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924939302] [2024-12-02 10:16:42,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:16:42,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:16:42,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:16:42,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:16:42,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:16:42,473 INFO L87 Difference]: Start difference. First operand 119214 states and 173025 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:43,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:16:43,138 INFO L93 Difference]: Finished difference Result 214643 states and 311814 transitions. [2024-12-02 10:16:43,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:16:43,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-12-02 10:16:43,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:16:43,280 INFO L225 Difference]: With dead ends: 214643 [2024-12-02 10:16:43,280 INFO L226 Difference]: Without dead ends: 153854 [2024-12-02 10:16:43,325 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 10:16:43,325 INFO L435 NwaCegarLoop]: 231 mSDtfsCounter, 108 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:16:43,326 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 399 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:16:43,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153854 states. [2024-12-02 10:16:44,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153854 to 148404. [2024-12-02 10:16:44,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148404 states, 148403 states have (on average 1.434775577313127) internal successors, (212925), 148403 states have internal predecessors, (212925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:45,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148404 states to 148404 states and 212925 transitions. [2024-12-02 10:16:45,274 INFO L78 Accepts]: Start accepts. Automaton has 148404 states and 212925 transitions. Word has length 94 [2024-12-02 10:16:45,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:16:45,274 INFO L471 AbstractCegarLoop]: Abstraction has 148404 states and 212925 transitions. [2024-12-02 10:16:45,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:45,274 INFO L276 IsEmpty]: Start isEmpty. Operand 148404 states and 212925 transitions. [2024-12-02 10:16:45,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 10:16:45,277 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:16:45,277 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:45,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 10:16:45,277 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:16:45,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:16:45,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1845591972, now seen corresponding path program 1 times [2024-12-02 10:16:45,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:16:45,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057257486] [2024-12-02 10:16:45,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:16:45,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:16:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:16:45,348 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:16:45,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:16:45,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057257486] [2024-12-02 10:16:45,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057257486] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:16:45,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:16:45,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:16:45,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581471808] [2024-12-02 10:16:45,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:16:45,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:16:45,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:16:45,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:16:45,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:16:45,349 INFO L87 Difference]: Start difference. First operand 148404 states and 212925 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:46,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:16:46,077 INFO L93 Difference]: Finished difference Result 337301 states and 483970 transitions. [2024-12-02 10:16:46,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:16:46,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-12-02 10:16:46,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:16:46,463 INFO L225 Difference]: With dead ends: 337301 [2024-12-02 10:16:46,463 INFO L226 Difference]: Without dead ends: 226166 [2024-12-02 10:16:46,504 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 10:16:46,505 INFO L435 NwaCegarLoop]: 212 mSDtfsCounter, 107 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:16:46,505 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 380 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:16:46,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226166 states. [2024-12-02 10:16:48,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226166 to 224242. [2024-12-02 10:16:48,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224242 states, 224241 states have (on average 1.419566448597714) internal successors, (318325), 224241 states have internal predecessors, (318325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:49,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224242 states to 224242 states and 318325 transitions. [2024-12-02 10:16:49,017 INFO L78 Accepts]: Start accepts. Automaton has 224242 states and 318325 transitions. Word has length 94 [2024-12-02 10:16:49,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:16:49,017 INFO L471 AbstractCegarLoop]: Abstraction has 224242 states and 318325 transitions. [2024-12-02 10:16:49,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:49,017 INFO L276 IsEmpty]: Start isEmpty. Operand 224242 states and 318325 transitions. [2024-12-02 10:16:49,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 10:16:49,024 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:16:49,024 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:49,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 10:16:49,025 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:16:49,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:16:49,025 INFO L85 PathProgramCache]: Analyzing trace with hash 343887049, now seen corresponding path program 1 times [2024-12-02 10:16:49,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:16:49,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262717754] [2024-12-02 10:16:49,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:16:49,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:16:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:16:49,192 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 10:16:49,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:16:49,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262717754] [2024-12-02 10:16:49,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262717754] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:16:49,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:16:49,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 10:16:49,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569444848] [2024-12-02 10:16:49,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:16:49,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:16:49,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:16:49,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:16:49,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:16:49,194 INFO L87 Difference]: Start difference. First operand 224242 states and 318325 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:50,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:16:50,944 INFO L93 Difference]: Finished difference Result 646944 states and 927717 transitions. [2024-12-02 10:16:50,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:16:50,944 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-12-02 10:16:50,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:16:51,427 INFO L225 Difference]: With dead ends: 646944 [2024-12-02 10:16:51,427 INFO L226 Difference]: Without dead ends: 542934 [2024-12-02 10:16:51,477 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-12-02 10:16:51,477 INFO L435 NwaCegarLoop]: 336 mSDtfsCounter, 1176 mSDsluCounter, 1534 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:16:51,477 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1176 Valid, 1870 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:16:51,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542934 states. [2024-12-02 10:16:55,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542934 to 323432. [2024-12-02 10:16:55,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323432 states, 323431 states have (on average 1.4170286707211122) internal successors, (458311), 323431 states have internal predecessors, (458311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:55,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323432 states to 323432 states and 458311 transitions. [2024-12-02 10:16:55,936 INFO L78 Accepts]: Start accepts. Automaton has 323432 states and 458311 transitions. Word has length 94 [2024-12-02 10:16:55,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:16:55,936 INFO L471 AbstractCegarLoop]: Abstraction has 323432 states and 458311 transitions. [2024-12-02 10:16:55,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:55,936 INFO L276 IsEmpty]: Start isEmpty. Operand 323432 states and 458311 transitions. [2024-12-02 10:16:55,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 10:16:55,941 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:16:55,941 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:55,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 10:16:55,942 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:16:55,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:16:55,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1789805472, now seen corresponding path program 1 times [2024-12-02 10:16:55,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:16:55,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720710270] [2024-12-02 10:16:55,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:16:55,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:16:55,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:16:55,986 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:16:55,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:16:55,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720710270] [2024-12-02 10:16:55,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720710270] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:16:55,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:16:55,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:16:55,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520006652] [2024-12-02 10:16:55,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:16:55,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:16:55,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:16:55,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:16:55,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:16:55,987 INFO L87 Difference]: Start difference. First operand 323432 states and 458311 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:16:58,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:16:58,417 INFO L93 Difference]: Finished difference Result 916231 states and 1295343 transitions. [2024-12-02 10:16:58,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:16:58,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-12-02 10:16:58,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:16:58,981 INFO L225 Difference]: With dead ends: 916231 [2024-12-02 10:16:58,981 INFO L226 Difference]: Without dead ends: 608049 [2024-12-02 10:16:59,051 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 10:16:59,051 INFO L435 NwaCegarLoop]: 184 mSDtfsCounter, 104 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:16:59,051 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 360 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:16:59,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608049 states. [2024-12-02 10:17:04,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608049 to 607087. [2024-12-02 10:17:04,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607087 states, 607086 states have (on average 1.4010272020768062) internal successors, (850544), 607086 states have internal predecessors, (850544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:17:05,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607087 states to 607087 states and 850544 transitions. [2024-12-02 10:17:05,851 INFO L78 Accepts]: Start accepts. Automaton has 607087 states and 850544 transitions. Word has length 94 [2024-12-02 10:17:05,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:17:05,851 INFO L471 AbstractCegarLoop]: Abstraction has 607087 states and 850544 transitions. [2024-12-02 10:17:05,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:17:05,851 INFO L276 IsEmpty]: Start isEmpty. Operand 607087 states and 850544 transitions. [2024-12-02 10:17:05,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 10:17:05,863 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:17:05,863 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:17:05,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 10:17:05,863 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:17:05,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:17:05,863 INFO L85 PathProgramCache]: Analyzing trace with hash 623184037, now seen corresponding path program 1 times [2024-12-02 10:17:05,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:17:05,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463340978] [2024-12-02 10:17:05,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:17:05,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:17:05,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:17:06,028 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 10:17:06,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:17:06,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463340978] [2024-12-02 10:17:06,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463340978] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:17:06,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:17:06,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 10:17:06,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265569136] [2024-12-02 10:17:06,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:17:06,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:17:06,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:17:06,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:17:06,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:17:06,030 INFO L87 Difference]: Start difference. First operand 607087 states and 850544 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:17:09,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:17:09,391 INFO L93 Difference]: Finished difference Result 1372089 states and 1942841 transitions. [2024-12-02 10:17:09,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:17:09,392 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-12-02 10:17:09,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:17:10,597 INFO L225 Difference]: With dead ends: 1372089 [2024-12-02 10:17:10,597 INFO L226 Difference]: Without dead ends: 1197588 [2024-12-02 10:17:10,702 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-12-02 10:17:10,702 INFO L435 NwaCegarLoop]: 329 mSDtfsCounter, 1208 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1208 SdHoareTripleChecker+Valid, 1552 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:17:10,703 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1208 Valid, 1552 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:17:11,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197588 states. [2024-12-02 10:17:19,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197588 to 774992. [2024-12-02 10:17:20,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774992 states, 774991 states have (on average 1.4006640077110573) internal successors, (1085502), 774991 states have internal predecessors, (1085502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:17:21,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774992 states to 774992 states and 1085502 transitions. [2024-12-02 10:17:21,588 INFO L78 Accepts]: Start accepts. Automaton has 774992 states and 1085502 transitions. Word has length 94 [2024-12-02 10:17:21,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:17:21,588 INFO L471 AbstractCegarLoop]: Abstraction has 774992 states and 1085502 transitions. [2024-12-02 10:17:21,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:17:21,588 INFO L276 IsEmpty]: Start isEmpty. Operand 774992 states and 1085502 transitions. [2024-12-02 10:17:21,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 10:17:21,596 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:17:21,596 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:17:21,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 10:17:21,597 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:17:21,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:17:21,597 INFO L85 PathProgramCache]: Analyzing trace with hash -32322572, now seen corresponding path program 1 times [2024-12-02 10:17:21,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:17:21,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441266157] [2024-12-02 10:17:21,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:17:21,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:17:21,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:17:21,739 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 10:17:21,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:17:21,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441266157] [2024-12-02 10:17:21,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441266157] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:17:21,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:17:21,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 10:17:21,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584721006] [2024-12-02 10:17:21,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:17:21,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:17:21,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:17:21,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:17:21,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:17:21,741 INFO L87 Difference]: Start difference. First operand 774992 states and 1085502 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 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 10:17:24,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:17:24,962 INFO L93 Difference]: Finished difference Result 1485377 states and 2100573 transitions. [2024-12-02 10:17:24,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:17:24,963 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 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 94 [2024-12-02 10:17:24,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:17:26,440 INFO L225 Difference]: With dead ends: 1485377 [2024-12-02 10:17:26,441 INFO L226 Difference]: Without dead ends: 1339212 [2024-12-02 10:17:26,651 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-12-02 10:17:26,655 INFO L435 NwaCegarLoop]: 327 mSDtfsCounter, 1282 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1282 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:17:26,655 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1282 Valid, 1524 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:17:27,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339212 states. [2024-12-02 10:17:36,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339212 to 894474. [2024-12-02 10:17:36,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894474 states, 894473 states have (on average 1.4014799775957463) internal successors, (1253586), 894473 states have internal predecessors, (1253586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:17:38,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894474 states to 894474 states and 1253586 transitions. [2024-12-02 10:17:38,799 INFO L78 Accepts]: Start accepts. Automaton has 894474 states and 1253586 transitions. Word has length 94 [2024-12-02 10:17:38,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:17:38,799 INFO L471 AbstractCegarLoop]: Abstraction has 894474 states and 1253586 transitions. [2024-12-02 10:17:38,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 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 10:17:38,799 INFO L276 IsEmpty]: Start isEmpty. Operand 894474 states and 1253586 transitions. [2024-12-02 10:17:38,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 10:17:38,809 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:17:38,809 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:17:38,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 10:17:38,809 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:17:38,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:17:38,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1163205815, now seen corresponding path program 1 times [2024-12-02 10:17:38,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:17:38,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657461037] [2024-12-02 10:17:38,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:17:38,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:17:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:17:38,943 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 10:17:38,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:17:38,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657461037] [2024-12-02 10:17:38,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657461037] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:17:38,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:17:38,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 10:17:38,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486339927] [2024-12-02 10:17:38,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:17:38,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:17:38,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:17:38,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:17:38,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:17:38,944 INFO L87 Difference]: Start difference. First operand 894474 states and 1253586 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:17:42,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:17:42,348 INFO L93 Difference]: Finished difference Result 1531774 states and 2163175 transitions. [2024-12-02 10:17:42,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:17:42,349 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-12-02 10:17:42,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:17:44,321 INFO L225 Difference]: With dead ends: 1531774 [2024-12-02 10:17:44,322 INFO L226 Difference]: Without dead ends: 1434044 [2024-12-02 10:17:44,462 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-12-02 10:17:44,463 INFO L435 NwaCegarLoop]: 325 mSDtfsCounter, 1198 mSDsluCounter, 1281 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1198 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:17:44,463 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1198 Valid, 1606 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:17:45,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434044 states.