./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.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_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/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_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/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_dbf3d20e-464a-46c8-aaff-0e31964fd959/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 a7994e4b0bfbe275d233e5a25c7b22888e2d55ba388328f1fc4435f77ac9412d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 14:45:05,100 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 14:45:05,156 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 14:45:05,160 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 14:45:05,160 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 14:45:05,182 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 14:45:05,182 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 14:45:05,182 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 14:45:05,183 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 14:45:05,183 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 14:45:05,183 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 14:45:05,183 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 14:45:05,183 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 14:45:05,183 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 14:45:05,184 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 14:45:05,184 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 14:45:05,184 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 14:45:05,184 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 14:45:05,184 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 14:45:05,184 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 14:45:05,184 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 14:45:05,184 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 14:45:05,184 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 14:45:05,184 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 14:45:05,184 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 14:45:05,185 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 14:45:05,185 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 14:45:05,185 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 14:45:05,185 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 14:45:05,185 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:45:05,185 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:45:05,185 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:45:05,185 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:45:05,185 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 14:45:05,185 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:45:05,185 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:45:05,185 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:45:05,186 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:45:05,186 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 14:45:05,186 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 14:45:05,186 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 14:45:05,186 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 14:45:05,186 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 14:45:05,186 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 14:45:05,186 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 14:45:05,186 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 14:45:05,186 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 14:45:05,186 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 14:45:05,186 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_dbf3d20e-464a-46c8-aaff-0e31964fd959/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 -> a7994e4b0bfbe275d233e5a25c7b22888e2d55ba388328f1fc4435f77ac9412d [2024-12-02 14:45:05,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 14:45:05,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 14:45:05,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 14:45:05,425 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 14:45:05,425 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 14:45:05,426 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-12-02 14:45:08,101 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/data/142bf50a8/6c8cc62584634674a5793570c3088ffc/FLAGa62a7bcc4 [2024-12-02 14:45:08,298 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 14:45:08,299 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-12-02 14:45:08,305 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/data/142bf50a8/6c8cc62584634674a5793570c3088ffc/FLAGa62a7bcc4 [2024-12-02 14:45:08,674 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/data/142bf50a8/6c8cc62584634674a5793570c3088ffc [2024-12-02 14:45:08,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 14:45:08,677 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 14:45:08,678 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 14:45:08,678 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 14:45:08,682 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 14:45:08,683 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:45:08" (1/1) ... [2024-12-02 14:45:08,683 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68f51823 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:08, skipping insertion in model container [2024-12-02 14:45:08,683 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:45:08" (1/1) ... [2024-12-02 14:45:08,702 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 14:45:08,861 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_dbf3d20e-464a-46c8-aaff-0e31964fd959/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4409,4422] [2024-12-02 14:45:08,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:45:08,894 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 14:45:08,921 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_dbf3d20e-464a-46c8-aaff-0e31964fd959/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4409,4422] [2024-12-02 14:45:08,934 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:45:08,950 INFO L204 MainTranslator]: Completed translation [2024-12-02 14:45:08,951 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:08 WrapperNode [2024-12-02 14:45:08,951 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 14:45:08,952 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 14:45:08,952 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 14:45:08,952 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 14:45:08,958 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:08" (1/1) ... [2024-12-02 14:45:08,965 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:08" (1/1) ... [2024-12-02 14:45:08,987 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 361 [2024-12-02 14:45:08,988 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 14:45:08,988 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 14:45:08,988 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 14:45:08,988 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 14:45:08,998 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:08" (1/1) ... [2024-12-02 14:45:08,999 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:08" (1/1) ... [2024-12-02 14:45:09,001 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:08" (1/1) ... [2024-12-02 14:45:09,015 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 14:45:09,015 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:08" (1/1) ... [2024-12-02 14:45:09,016 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:08" (1/1) ... [2024-12-02 14:45:09,021 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:08" (1/1) ... [2024-12-02 14:45:09,022 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:08" (1/1) ... [2024-12-02 14:45:09,026 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:08" (1/1) ... [2024-12-02 14:45:09,028 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:08" (1/1) ... [2024-12-02 14:45:09,029 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:08" (1/1) ... [2024-12-02 14:45:09,031 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 14:45:09,032 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 14:45:09,032 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 14:45:09,033 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 14:45:09,033 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:08" (1/1) ... [2024-12-02 14:45:09,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:45:09,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:45:09,063 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 14:45:09,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 14:45:09,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 14:45:09,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 14:45:09,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 14:45:09,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 14:45:09,182 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 14:45:09,183 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 14:45:09,510 INFO L? ?]: Removed 35 outVars from TransFormulas that were not future-live. [2024-12-02 14:45:09,510 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 14:45:09,520 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 14:45:09,520 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-02 14:45:09,521 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:45:09 BoogieIcfgContainer [2024-12-02 14:45:09,521 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 14:45:09,523 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 14:45:09,523 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 14:45:09,528 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 14:45:09,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:45:08" (1/3) ... [2024-12-02 14:45:09,529 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32316c0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:45:09, skipping insertion in model container [2024-12-02 14:45:09,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:45:08" (2/3) ... [2024-12-02 14:45:09,529 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32316c0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:45:09, skipping insertion in model container [2024-12-02 14:45:09,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:45:09" (3/3) ... [2024-12-02 14:45:09,531 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-12-02 14:45:09,546 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 14:45:09,548 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c that has 1 procedures, 87 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-12-02 14:45:09,600 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 14:45:09,610 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;@66f1f22b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 14:45:09,610 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 14:45:09,614 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 85 states have (on average 1.6705882352941177) internal successors, (142), 86 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:09,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-12-02 14:45:09,619 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:09,619 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:09,620 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:09,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:09,623 INFO L85 PathProgramCache]: Analyzing trace with hash 716810707, now seen corresponding path program 1 times [2024-12-02 14:45:09,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:09,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781506083] [2024-12-02 14:45:09,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:09,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:09,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:45:09,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:09,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781506083] [2024-12-02 14:45:09,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781506083] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:09,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:09,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:45:09,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385199382] [2024-12-02 14:45:09,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:09,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:45:09,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:09,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:45:09,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:45:09,934 INFO L87 Difference]: Start difference. First operand has 87 states, 85 states have (on average 1.6705882352941177) internal successors, (142), 86 states have internal predecessors, (142), 0 states have call successors, (0), 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 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:09,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:09,983 INFO L93 Difference]: Finished difference Result 205 states and 324 transitions. [2024-12-02 14:45:09,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:45:09,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-12-02 14:45:09,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:09,993 INFO L225 Difference]: With dead ends: 205 [2024-12-02 14:45:09,993 INFO L226 Difference]: Without dead ends: 132 [2024-12-02 14:45:09,996 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:45:09,999 INFO L435 NwaCegarLoop]: 182 mSDtfsCounter, 94 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 283 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 14:45:09,999 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 283 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:45:10,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-12-02 14:45:10,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2024-12-02 14:45:10,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.503875968992248) internal successors, (194), 129 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:10,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 194 transitions. [2024-12-02 14:45:10,034 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 194 transitions. Word has length 38 [2024-12-02 14:45:10,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:10,034 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 194 transitions. [2024-12-02 14:45:10,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:10,034 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 194 transitions. [2024-12-02 14:45:10,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-12-02 14:45:10,035 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:10,035 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:10,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 14:45:10,036 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:10,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:10,037 INFO L85 PathProgramCache]: Analyzing trace with hash -935293361, now seen corresponding path program 1 times [2024-12-02 14:45:10,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:10,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013968262] [2024-12-02 14:45:10,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:10,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:10,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:10,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:45:10,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:10,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013968262] [2024-12-02 14:45:10,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013968262] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:10,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:10,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:45:10,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848711962] [2024-12-02 14:45:10,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:10,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:45:10,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:10,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:45:10,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:45:10,137 INFO L87 Difference]: Start difference. First operand 130 states and 194 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:10,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:10,168 INFO L93 Difference]: Finished difference Result 318 states and 490 transitions. [2024-12-02 14:45:10,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:45:10,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-12-02 14:45:10,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:10,170 INFO L225 Difference]: With dead ends: 318 [2024-12-02 14:45:10,170 INFO L226 Difference]: Without dead ends: 208 [2024-12-02 14:45:10,171 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:45:10,172 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 79 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 235 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 14:45:10,172 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 235 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:45:10,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-12-02 14:45:10,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 206. [2024-12-02 14:45:10,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 1.526829268292683) internal successors, (313), 205 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:10,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 313 transitions. [2024-12-02 14:45:10,186 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 313 transitions. Word has length 39 [2024-12-02 14:45:10,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:10,187 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 313 transitions. [2024-12-02 14:45:10,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:10,187 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 313 transitions. [2024-12-02 14:45:10,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-12-02 14:45:10,188 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:10,188 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:10,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 14:45:10,188 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:10,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:10,188 INFO L85 PathProgramCache]: Analyzing trace with hash 830312666, now seen corresponding path program 1 times [2024-12-02 14:45:10,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:10,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604853828] [2024-12-02 14:45:10,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:10,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:10,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:10,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:45:10,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:10,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604853828] [2024-12-02 14:45:10,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604853828] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:10,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:10,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:45:10,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909564089] [2024-12-02 14:45:10,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:10,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:45:10,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:10,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:45:10,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:45:10,357 INFO L87 Difference]: Start difference. First operand 206 states and 313 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:10,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:10,451 INFO L93 Difference]: Finished difference Result 950 states and 1485 transitions. [2024-12-02 14:45:10,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:45:10,451 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-12-02 14:45:10,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:10,455 INFO L225 Difference]: With dead ends: 950 [2024-12-02 14:45:10,455 INFO L226 Difference]: Without dead ends: 764 [2024-12-02 14:45:10,456 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 14:45:10,457 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 501 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:10,457 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 676 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:45:10,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2024-12-02 14:45:10,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 390. [2024-12-02 14:45:10,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 1.5347043701799485) internal successors, (597), 389 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:10,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 597 transitions. [2024-12-02 14:45:10,480 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 597 transitions. Word has length 40 [2024-12-02 14:45:10,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:10,481 INFO L471 AbstractCegarLoop]: Abstraction has 390 states and 597 transitions. [2024-12-02 14:45:10,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:10,481 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 597 transitions. [2024-12-02 14:45:10,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-12-02 14:45:10,482 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:10,482 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] [2024-12-02 14:45:10,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 14:45:10,482 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:10,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:10,483 INFO L85 PathProgramCache]: Analyzing trace with hash -49567444, now seen corresponding path program 1 times [2024-12-02 14:45:10,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:10,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009266099] [2024-12-02 14:45:10,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:10,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:10,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:45:10,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:10,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009266099] [2024-12-02 14:45:10,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009266099] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:10,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:10,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:45:10,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983264707] [2024-12-02 14:45:10,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:10,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:45:10,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:10,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:45:10,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:45:10,655 INFO L87 Difference]: Start difference. First operand 390 states and 597 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:10,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:10,724 INFO L93 Difference]: Finished difference Result 1348 states and 2080 transitions. [2024-12-02 14:45:10,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:45:10,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2024-12-02 14:45:10,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:10,729 INFO L225 Difference]: With dead ends: 1348 [2024-12-02 14:45:10,729 INFO L226 Difference]: Without dead ends: 978 [2024-12-02 14:45:10,730 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:45:10,731 INFO L435 NwaCegarLoop]: 220 mSDtfsCounter, 275 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:10,731 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 439 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:45:10,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2024-12-02 14:45:10,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 974. [2024-12-02 14:45:10,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 973 states have (on average 1.5344295991778005) internal successors, (1493), 973 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:10,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1493 transitions. [2024-12-02 14:45:10,763 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1493 transitions. Word has length 41 [2024-12-02 14:45:10,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:10,764 INFO L471 AbstractCegarLoop]: Abstraction has 974 states and 1493 transitions. [2024-12-02 14:45:10,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:10,764 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1493 transitions. [2024-12-02 14:45:10,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-12-02 14:45:10,765 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:10,765 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] [2024-12-02 14:45:10,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 14:45:10,766 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:10,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:10,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1536012938, now seen corresponding path program 1 times [2024-12-02 14:45:10,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:10,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266904698] [2024-12-02 14:45:10,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:10,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:10,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:45:10,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:10,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266904698] [2024-12-02 14:45:10,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266904698] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:10,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:10,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:45:10,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778917861] [2024-12-02 14:45:10,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:10,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:45:10,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:10,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:45:10,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:45:10,824 INFO L87 Difference]: Start difference. First operand 974 states and 1493 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:10,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:10,851 INFO L93 Difference]: Finished difference Result 2490 states and 3807 transitions. [2024-12-02 14:45:10,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:45:10,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2024-12-02 14:45:10,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:10,856 INFO L225 Difference]: With dead ends: 2490 [2024-12-02 14:45:10,856 INFO L226 Difference]: Without dead ends: 1536 [2024-12-02 14:45:10,857 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:45:10,857 INFO L435 NwaCegarLoop]: 189 mSDtfsCounter, 86 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 275 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 14:45:10,858 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 275 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:45:10,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2024-12-02 14:45:10,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1534. [2024-12-02 14:45:10,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1534 states, 1533 states have (on average 1.5061969993476843) internal successors, (2309), 1533 states have internal predecessors, (2309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:10,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1534 states to 1534 states and 2309 transitions. [2024-12-02 14:45:10,900 INFO L78 Accepts]: Start accepts. Automaton has 1534 states and 2309 transitions. Word has length 42 [2024-12-02 14:45:10,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:10,900 INFO L471 AbstractCegarLoop]: Abstraction has 1534 states and 2309 transitions. [2024-12-02 14:45:10,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:10,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1534 states and 2309 transitions. [2024-12-02 14:45:10,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-12-02 14:45:10,902 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:10,902 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] [2024-12-02 14:45:10,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 14:45:10,902 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:10,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:10,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1650560821, now seen corresponding path program 1 times [2024-12-02 14:45:10,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:10,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071961997] [2024-12-02 14:45:10,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:10,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:11,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:45:11,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:11,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071961997] [2024-12-02 14:45:11,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071961997] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:11,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:11,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:45:11,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030720678] [2024-12-02 14:45:11,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:11,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:45:11,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:11,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:45:11,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:45:11,023 INFO L87 Difference]: Start difference. First operand 1534 states and 2309 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:11,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:11,197 INFO L93 Difference]: Finished difference Result 4106 states and 6199 transitions. [2024-12-02 14:45:11,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:45:11,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2024-12-02 14:45:11,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:11,207 INFO L225 Difference]: With dead ends: 4106 [2024-12-02 14:45:11,207 INFO L226 Difference]: Without dead ends: 2592 [2024-12-02 14:45:11,209 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 14:45:11,210 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 524 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:11,210 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 137 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:45:11,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2592 states. [2024-12-02 14:45:11,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2592 to 2590. [2024-12-02 14:45:11,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2590 states, 2589 states have (on average 1.4943993820007726) internal successors, (3869), 2589 states have internal predecessors, (3869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:11,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2590 states to 2590 states and 3869 transitions. [2024-12-02 14:45:11,282 INFO L78 Accepts]: Start accepts. Automaton has 2590 states and 3869 transitions. Word has length 43 [2024-12-02 14:45:11,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:11,282 INFO L471 AbstractCegarLoop]: Abstraction has 2590 states and 3869 transitions. [2024-12-02 14:45:11,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:11,282 INFO L276 IsEmpty]: Start isEmpty. Operand 2590 states and 3869 transitions. [2024-12-02 14:45:11,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-12-02 14:45:11,283 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:11,283 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] [2024-12-02 14:45:11,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 14:45:11,284 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:11,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:11,284 INFO L85 PathProgramCache]: Analyzing trace with hash 836148826, now seen corresponding path program 1 times [2024-12-02 14:45:11,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:11,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257754102] [2024-12-02 14:45:11,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:11,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:11,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:11,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:45:11,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:11,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257754102] [2024-12-02 14:45:11,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257754102] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:11,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:11,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:45:11,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725425001] [2024-12-02 14:45:11,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:11,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:45:11,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:11,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:45:11,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:45:11,545 INFO L87 Difference]: Start difference. First operand 2590 states and 3869 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:11,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:11,579 INFO L93 Difference]: Finished difference Result 2752 states and 4110 transitions. [2024-12-02 14:45:11,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:45:11,593 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2024-12-02 14:45:11,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:11,601 INFO L225 Difference]: With dead ends: 2752 [2024-12-02 14:45:11,602 INFO L226 Difference]: Without dead ends: 2750 [2024-12-02 14:45:11,602 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 14:45:11,603 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 0 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:11,603 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 462 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:45:11,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2750 states. [2024-12-02 14:45:11,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2750 to 2750. [2024-12-02 14:45:11,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2750 states, 2749 states have (on average 1.46562386322299) internal successors, (4029), 2749 states have internal predecessors, (4029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:11,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2750 states to 2750 states and 4029 transitions. [2024-12-02 14:45:11,667 INFO L78 Accepts]: Start accepts. Automaton has 2750 states and 4029 transitions. Word has length 43 [2024-12-02 14:45:11,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:11,667 INFO L471 AbstractCegarLoop]: Abstraction has 2750 states and 4029 transitions. [2024-12-02 14:45:11,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:11,667 INFO L276 IsEmpty]: Start isEmpty. Operand 2750 states and 4029 transitions. [2024-12-02 14:45:11,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-12-02 14:45:11,668 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:11,668 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] [2024-12-02 14:45:11,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 14:45:11,668 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:11,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:11,669 INFO L85 PathProgramCache]: Analyzing trace with hash 161382844, now seen corresponding path program 1 times [2024-12-02 14:45:11,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:11,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977070915] [2024-12-02 14:45:11,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:11,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:11,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:11,742 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 14:45:11,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:11,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977070915] [2024-12-02 14:45:11,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977070915] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:11,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:11,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:45:11,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402336941] [2024-12-02 14:45:11,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:11,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:45:11,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:11,743 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:45:11,743 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:45:11,743 INFO L87 Difference]: Start difference. First operand 2750 states and 4029 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:11,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:11,779 INFO L93 Difference]: Finished difference Result 6192 states and 9053 transitions. [2024-12-02 14:45:11,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:45:11,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2024-12-02 14:45:11,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:11,790 INFO L225 Difference]: With dead ends: 6192 [2024-12-02 14:45:11,790 INFO L226 Difference]: Without dead ends: 3462 [2024-12-02 14:45:11,793 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:45:11,794 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 66 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:11,794 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 214 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:45:11,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3462 states. [2024-12-02 14:45:11,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3462 to 3440. [2024-12-02 14:45:11,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3440 states, 3439 states have (on average 1.4489677231753417) internal successors, (4983), 3439 states have internal predecessors, (4983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:11,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3440 states to 3440 states and 4983 transitions. [2024-12-02 14:45:11,886 INFO L78 Accepts]: Start accepts. Automaton has 3440 states and 4983 transitions. Word has length 44 [2024-12-02 14:45:11,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:11,886 INFO L471 AbstractCegarLoop]: Abstraction has 3440 states and 4983 transitions. [2024-12-02 14:45:11,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:11,886 INFO L276 IsEmpty]: Start isEmpty. Operand 3440 states and 4983 transitions. [2024-12-02 14:45:11,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 14:45:11,888 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:11,888 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] [2024-12-02 14:45:11,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 14:45:11,889 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:11,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:11,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1477612707, now seen corresponding path program 1 times [2024-12-02 14:45:11,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:11,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864556065] [2024-12-02 14:45:11,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:11,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:11,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:11,958 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:45:11,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:11,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864556065] [2024-12-02 14:45:11,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864556065] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:11,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:11,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:45:11,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688696673] [2024-12-02 14:45:11,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:11,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:45:11,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:11,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:45:11,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:45:11,960 INFO L87 Difference]: Start difference. First operand 3440 states and 4983 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 14:45:11,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:11,995 INFO L93 Difference]: Finished difference Result 8581 states and 12443 transitions. [2024-12-02 14:45:11,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:45:11,995 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 14:45:11,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:12,009 INFO L225 Difference]: With dead ends: 8581 [2024-12-02 14:45:12,010 INFO L226 Difference]: Without dead ends: 5763 [2024-12-02 14:45:12,013 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:45:12,014 INFO L435 NwaCegarLoop]: 173 mSDtfsCounter, 69 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:12,014 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 277 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:45:12,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5763 states. [2024-12-02 14:45:12,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5763 to 5761. [2024-12-02 14:45:12,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5761 states, 5760 states have (on average 1.4314236111111112) internal successors, (8245), 5760 states have internal predecessors, (8245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:12,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5761 states to 5761 states and 8245 transitions. [2024-12-02 14:45:12,144 INFO L78 Accepts]: Start accepts. Automaton has 5761 states and 8245 transitions. Word has length 63 [2024-12-02 14:45:12,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:12,144 INFO L471 AbstractCegarLoop]: Abstraction has 5761 states and 8245 transitions. [2024-12-02 14:45:12,144 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 14:45:12,144 INFO L276 IsEmpty]: Start isEmpty. Operand 5761 states and 8245 transitions. [2024-12-02 14:45:12,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 14:45:12,147 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:12,147 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:12,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 14:45:12,148 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:12,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:12,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1700716252, now seen corresponding path program 1 times [2024-12-02 14:45:12,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:12,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789448786] [2024-12-02 14:45:12,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:12,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:12,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:12,484 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:45:12,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:12,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789448786] [2024-12-02 14:45:12,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789448786] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:45:12,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069861616] [2024-12-02 14:45:12,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:12,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:45:12,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:45:12,487 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:45:12,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 14:45:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:12,615 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 14:45:12,622 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:45:13,221 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:45:13,222 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:45:13,688 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:45:13,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069861616] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:45:13,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:45:13,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 21 [2024-12-02 14:45:13,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728790513] [2024-12-02 14:45:13,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:45:13,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 14:45:13,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:13,689 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 14:45:13,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-12-02 14:45:13,690 INFO L87 Difference]: Start difference. First operand 5761 states and 8245 transitions. Second operand has 21 states, 21 states have (on average 8.571428571428571) internal successors, (180), 21 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:19,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:19,343 INFO L93 Difference]: Finished difference Result 34398 states and 48975 transitions. [2024-12-02 14:45:19,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-12-02 14:45:19,343 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.571428571428571) internal successors, (180), 21 states have internal predecessors, (180), 0 states have call successors, (0), 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 14:45:19,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:19,398 INFO L225 Difference]: With dead ends: 34398 [2024-12-02 14:45:19,398 INFO L226 Difference]: Without dead ends: 28660 [2024-12-02 14:45:19,406 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5847 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2929, Invalid=12571, Unknown=0, NotChecked=0, Total=15500 [2024-12-02 14:45:19,407 INFO L435 NwaCegarLoop]: 191 mSDtfsCounter, 8023 mSDsluCounter, 1926 mSDsCounter, 0 mSdLazyCounter, 2415 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8023 SdHoareTripleChecker+Valid, 2117 SdHoareTripleChecker+Invalid, 2535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:19,407 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8023 Valid, 2117 Invalid, 2535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2415 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-12-02 14:45:19,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28660 states. [2024-12-02 14:45:19,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28660 to 21188. [2024-12-02 14:45:19,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21188 states, 21187 states have (on average 1.4064756690423372) internal successors, (29799), 21187 states have internal predecessors, (29799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:19,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21188 states to 21188 states and 29799 transitions. [2024-12-02 14:45:19,773 INFO L78 Accepts]: Start accepts. Automaton has 21188 states and 29799 transitions. Word has length 63 [2024-12-02 14:45:19,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:19,774 INFO L471 AbstractCegarLoop]: Abstraction has 21188 states and 29799 transitions. [2024-12-02 14:45:19,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.571428571428571) internal successors, (180), 21 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:19,775 INFO L276 IsEmpty]: Start isEmpty. Operand 21188 states and 29799 transitions. [2024-12-02 14:45:19,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 14:45:19,777 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:19,777 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:19,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 14:45:19,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:45:19,978 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:19,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:19,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1430287189, now seen corresponding path program 1 times [2024-12-02 14:45:19,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:19,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96071170] [2024-12-02 14:45:19,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:19,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:20,041 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:45:20,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:20,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96071170] [2024-12-02 14:45:20,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96071170] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:20,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:20,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:45:20,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015182180] [2024-12-02 14:45:20,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:20,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:45:20,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:20,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:45:20,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:45:20,043 INFO L87 Difference]: Start difference. First operand 21188 states and 29799 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:20,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:20,169 INFO L93 Difference]: Finished difference Result 41449 states and 57916 transitions. [2024-12-02 14:45:20,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:45:20,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-12-02 14:45:20,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:20,221 INFO L225 Difference]: With dead ends: 41449 [2024-12-02 14:45:20,221 INFO L226 Difference]: Without dead ends: 28704 [2024-12-02 14:45:20,231 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:45:20,232 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 67 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 266 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 14:45:20,232 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 266 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:45:20,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28704 states. [2024-12-02 14:45:20,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28704 to 28702. [2024-12-02 14:45:20,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28702 states, 28701 states have (on average 1.3816243336469112) internal successors, (39654), 28701 states have internal predecessors, (39654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:20,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28702 states to 28702 states and 39654 transitions. [2024-12-02 14:45:20,802 INFO L78 Accepts]: Start accepts. Automaton has 28702 states and 39654 transitions. Word has length 64 [2024-12-02 14:45:20,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:20,802 INFO L471 AbstractCegarLoop]: Abstraction has 28702 states and 39654 transitions. [2024-12-02 14:45:20,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:20,802 INFO L276 IsEmpty]: Start isEmpty. Operand 28702 states and 39654 transitions. [2024-12-02 14:45:20,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 14:45:20,804 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:20,804 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:20,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 14:45:20,804 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:20,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:20,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1004794437, now seen corresponding path program 1 times [2024-12-02 14:45:20,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:20,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543890486] [2024-12-02 14:45:20,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:20,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:20,846 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:45:20,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:20,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543890486] [2024-12-02 14:45:20,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543890486] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:20,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:20,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:45:20,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039897916] [2024-12-02 14:45:20,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:20,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:45:20,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:20,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:45:20,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:45:20,847 INFO L87 Difference]: Start difference. First operand 28702 states and 39654 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:20,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:20,909 INFO L93 Difference]: Finished difference Result 40144 states and 55296 transitions. [2024-12-02 14:45:20,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:45:20,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-12-02 14:45:20,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:20,941 INFO L225 Difference]: With dead ends: 40144 [2024-12-02 14:45:20,941 INFO L226 Difference]: Without dead ends: 24408 [2024-12-02 14:45:20,950 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:45:20,951 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 64 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 250 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 14:45:20,951 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 250 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:45:20,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24408 states. [2024-12-02 14:45:21,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24408 to 23102. [2024-12-02 14:45:21,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23102 states, 23101 states have (on average 1.3666507943379074) internal successors, (31571), 23101 states have internal predecessors, (31571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:21,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23102 states to 23102 states and 31571 transitions. [2024-12-02 14:45:21,250 INFO L78 Accepts]: Start accepts. Automaton has 23102 states and 31571 transitions. Word has length 64 [2024-12-02 14:45:21,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:21,250 INFO L471 AbstractCegarLoop]: Abstraction has 23102 states and 31571 transitions. [2024-12-02 14:45:21,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:21,250 INFO L276 IsEmpty]: Start isEmpty. Operand 23102 states and 31571 transitions. [2024-12-02 14:45:21,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 14:45:21,254 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:21,254 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:21,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 14:45:21,254 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:21,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:21,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1956303618, now seen corresponding path program 1 times [2024-12-02 14:45:21,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:21,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993401817] [2024-12-02 14:45:21,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:21,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:21,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:21,377 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 14:45:21,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:21,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993401817] [2024-12-02 14:45:21,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993401817] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:21,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:21,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:45:21,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573732139] [2024-12-02 14:45:21,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:21,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:45:21,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:21,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:45:21,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:45:21,379 INFO L87 Difference]: Start difference. First operand 23102 states and 31571 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 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 14:45:21,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:21,565 INFO L93 Difference]: Finished difference Result 43767 states and 60207 transitions. [2024-12-02 14:45:21,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:45:21,566 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 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 64 [2024-12-02 14:45:21,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:21,624 INFO L225 Difference]: With dead ends: 43767 [2024-12-02 14:45:21,624 INFO L226 Difference]: Without dead ends: 34545 [2024-12-02 14:45:21,636 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:45:21,637 INFO L435 NwaCegarLoop]: 216 mSDtfsCounter, 342 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:21,637 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 577 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:45:21,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34545 states. [2024-12-02 14:45:22,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34545 to 30803. [2024-12-02 14:45:22,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30803 states, 30802 states have (on average 1.3607882605025647) internal successors, (41915), 30802 states have internal predecessors, (41915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:22,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30803 states to 30803 states and 41915 transitions. [2024-12-02 14:45:22,191 INFO L78 Accepts]: Start accepts. Automaton has 30803 states and 41915 transitions. Word has length 64 [2024-12-02 14:45:22,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:22,191 INFO L471 AbstractCegarLoop]: Abstraction has 30803 states and 41915 transitions. [2024-12-02 14:45:22,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 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 14:45:22,191 INFO L276 IsEmpty]: Start isEmpty. Operand 30803 states and 41915 transitions. [2024-12-02 14:45:22,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 14:45:22,195 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:22,195 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:22,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 14:45:22,196 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:22,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:22,196 INFO L85 PathProgramCache]: Analyzing trace with hash 79620841, now seen corresponding path program 1 times [2024-12-02 14:45:22,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:22,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314857538] [2024-12-02 14:45:22,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:22,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:22,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:22,269 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:45:22,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:22,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314857538] [2024-12-02 14:45:22,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314857538] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:22,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:22,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:45:22,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670312115] [2024-12-02 14:45:22,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:22,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:45:22,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:22,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:45:22,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:45:22,271 INFO L87 Difference]: Start difference. First operand 30803 states and 41915 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:22,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:22,427 INFO L93 Difference]: Finished difference Result 53762 states and 72703 transitions. [2024-12-02 14:45:22,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:45:22,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-12-02 14:45:22,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:22,493 INFO L225 Difference]: With dead ends: 53762 [2024-12-02 14:45:22,493 INFO L226 Difference]: Without dead ends: 31792 [2024-12-02 14:45:22,512 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:45:22,512 INFO L435 NwaCegarLoop]: 163 mSDtfsCounter, 67 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 268 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 14:45:22,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 268 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:45:22,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31792 states. [2024-12-02 14:45:22,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31792 to 30846. [2024-12-02 14:45:22,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30846 states, 30845 states have (on average 1.341676122548225) internal successors, (41384), 30845 states have internal predecessors, (41384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:23,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30846 states to 30846 states and 41384 transitions. [2024-12-02 14:45:23,112 INFO L78 Accepts]: Start accepts. Automaton has 30846 states and 41384 transitions. Word has length 64 [2024-12-02 14:45:23,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:23,112 INFO L471 AbstractCegarLoop]: Abstraction has 30846 states and 41384 transitions. [2024-12-02 14:45:23,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:23,112 INFO L276 IsEmpty]: Start isEmpty. Operand 30846 states and 41384 transitions. [2024-12-02 14:45:23,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 14:45:23,115 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:23,115 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:23,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 14:45:23,115 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:23,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:23,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1706388265, now seen corresponding path program 1 times [2024-12-02 14:45:23,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:23,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557478024] [2024-12-02 14:45:23,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:23,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:23,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:23,203 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 14:45:23,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:23,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557478024] [2024-12-02 14:45:23,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557478024] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:23,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:23,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:45:23,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028219571] [2024-12-02 14:45:23,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:23,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:45:23,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:23,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:45:23,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:45:23,204 INFO L87 Difference]: Start difference. First operand 30846 states and 41384 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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 14:45:23,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:23,331 INFO L93 Difference]: Finished difference Result 46723 states and 63228 transitions. [2024-12-02 14:45:23,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:45:23,332 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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 64 [2024-12-02 14:45:23,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:23,387 INFO L225 Difference]: With dead ends: 46723 [2024-12-02 14:45:23,387 INFO L226 Difference]: Without dead ends: 40533 [2024-12-02 14:45:23,399 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:45:23,399 INFO L435 NwaCegarLoop]: 211 mSDtfsCounter, 350 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:23,399 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 564 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:45:23,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40533 states. [2024-12-02 14:45:23,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40533 to 36800. [2024-12-02 14:45:23,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36800 states, 36799 states have (on average 1.3412320986983342) internal successors, (49356), 36799 states have internal predecessors, (49356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:23,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36800 states to 36800 states and 49356 transitions. [2024-12-02 14:45:23,927 INFO L78 Accepts]: Start accepts. Automaton has 36800 states and 49356 transitions. Word has length 64 [2024-12-02 14:45:23,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:23,927 INFO L471 AbstractCegarLoop]: Abstraction has 36800 states and 49356 transitions. [2024-12-02 14:45:23,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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 14:45:23,927 INFO L276 IsEmpty]: Start isEmpty. Operand 36800 states and 49356 transitions. [2024-12-02 14:45:23,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-12-02 14:45:23,928 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:23,928 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 14:45:23,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 14:45:23,928 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:23,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:23,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1607670003, now seen corresponding path program 1 times [2024-12-02 14:45:23,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:23,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663180355] [2024-12-02 14:45:23,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:23,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:24,012 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 14:45:24,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:24,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663180355] [2024-12-02 14:45:24,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663180355] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:24,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:24,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:45:24,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141570192] [2024-12-02 14:45:24,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:24,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:45:24,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:24,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:45:24,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:45:24,014 INFO L87 Difference]: Start difference. First operand 36800 states and 49356 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 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 14:45:24,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:24,161 INFO L93 Difference]: Finished difference Result 53352 states and 71996 transitions. [2024-12-02 14:45:24,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:45:24,162 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 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 65 [2024-12-02 14:45:24,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:24,210 INFO L225 Difference]: With dead ends: 53352 [2024-12-02 14:45:24,210 INFO L226 Difference]: Without dead ends: 45907 [2024-12-02 14:45:24,222 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:45:24,223 INFO L435 NwaCegarLoop]: 208 mSDtfsCounter, 333 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:24,223 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 592 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:45:24,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45907 states. [2024-12-02 14:45:24,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45907 to 42161. [2024-12-02 14:45:24,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42161 states, 42160 states have (on average 1.3383776091081594) internal successors, (56426), 42160 states have internal predecessors, (56426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:24,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42161 states to 42161 states and 56426 transitions. [2024-12-02 14:45:24,759 INFO L78 Accepts]: Start accepts. Automaton has 42161 states and 56426 transitions. Word has length 65 [2024-12-02 14:45:24,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:24,759 INFO L471 AbstractCegarLoop]: Abstraction has 42161 states and 56426 transitions. [2024-12-02 14:45:24,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 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 14:45:24,759 INFO L276 IsEmpty]: Start isEmpty. Operand 42161 states and 56426 transitions. [2024-12-02 14:45:24,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-02 14:45:24,761 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:24,761 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 14:45:24,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 14:45:24,761 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:24,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:24,761 INFO L85 PathProgramCache]: Analyzing trace with hash -292012416, now seen corresponding path program 1 times [2024-12-02 14:45:24,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:24,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121828375] [2024-12-02 14:45:24,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:24,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:24,832 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 14:45:24,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:24,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121828375] [2024-12-02 14:45:24,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121828375] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:24,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:24,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:45:24,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525789266] [2024-12-02 14:45:24,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:24,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:45:24,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:24,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:45:24,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:45:24,834 INFO L87 Difference]: Start difference. First operand 42161 states and 56426 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:25,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:25,208 INFO L93 Difference]: Finished difference Result 101565 states and 135676 transitions. [2024-12-02 14:45:25,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:45:25,209 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-12-02 14:45:25,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:25,286 INFO L225 Difference]: With dead ends: 101565 [2024-12-02 14:45:25,286 INFO L226 Difference]: Without dead ends: 59464 [2024-12-02 14:45:25,301 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 14:45:25,302 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 480 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:25,302 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 141 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:45:25,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59464 states. [2024-12-02 14:45:25,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59464 to 59108. [2024-12-02 14:45:25,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59108 states, 59107 states have (on average 1.3236503290642394) internal successors, (78237), 59107 states have internal predecessors, (78237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:25,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59108 states to 59108 states and 78237 transitions. [2024-12-02 14:45:25,778 INFO L78 Accepts]: Start accepts. Automaton has 59108 states and 78237 transitions. Word has length 69 [2024-12-02 14:45:25,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:25,778 INFO L471 AbstractCegarLoop]: Abstraction has 59108 states and 78237 transitions. [2024-12-02 14:45:25,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:25,778 INFO L276 IsEmpty]: Start isEmpty. Operand 59108 states and 78237 transitions. [2024-12-02 14:45:25,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-02 14:45:25,780 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:25,780 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 14:45:25,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 14:45:25,780 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:25,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:25,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1359557829, now seen corresponding path program 1 times [2024-12-02 14:45:25,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:25,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244770689] [2024-12-02 14:45:25,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:25,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:25,939 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:45:25,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:25,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244770689] [2024-12-02 14:45:25,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244770689] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:45:25,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825929974] [2024-12-02 14:45:25,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:25,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:45:25,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:45:25,942 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:45:25,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 14:45:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:26,048 INFO L256 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 14:45:26,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:45:26,244 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:45:26,244 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:45:26,343 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:45:26,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825929974] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:45:26,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:45:26,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-12-02 14:45:26,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240799225] [2024-12-02 14:45:26,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:45:26,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 14:45:26,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:26,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 14:45:26,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-12-02 14:45:26,345 INFO L87 Difference]: Start difference. First operand 59108 states and 78237 transitions. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:26,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:26,727 INFO L93 Difference]: Finished difference Result 98579 states and 130176 transitions. [2024-12-02 14:45:26,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:45:26,728 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-12-02 14:45:26,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:26,790 INFO L225 Difference]: With dead ends: 98579 [2024-12-02 14:45:26,790 INFO L226 Difference]: Without dead ends: 71034 [2024-12-02 14:45:26,813 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 128 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-12-02 14:45:26,814 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 996 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:26,814 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 357 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 14:45:26,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71034 states. [2024-12-02 14:45:27,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71034 to 61034. [2024-12-02 14:45:27,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61034 states, 61033 states have (on average 1.3143872986744876) internal successors, (80221), 61033 states have internal predecessors, (80221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:27,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61034 states to 61034 states and 80221 transitions. [2024-12-02 14:45:27,514 INFO L78 Accepts]: Start accepts. Automaton has 61034 states and 80221 transitions. Word has length 69 [2024-12-02 14:45:27,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:27,514 INFO L471 AbstractCegarLoop]: Abstraction has 61034 states and 80221 transitions. [2024-12-02 14:45:27,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:27,515 INFO L276 IsEmpty]: Start isEmpty. Operand 61034 states and 80221 transitions. [2024-12-02 14:45:27,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-02 14:45:27,516 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:27,516 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 14:45:27,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 14:45:27,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 14:45:27,717 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:27,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:27,717 INFO L85 PathProgramCache]: Analyzing trace with hash -2115524128, now seen corresponding path program 1 times [2024-12-02 14:45:27,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:27,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787570087] [2024-12-02 14:45:27,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:27,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:27,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:27,771 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 14:45:27,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:27,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787570087] [2024-12-02 14:45:27,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787570087] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:27,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:27,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:45:27,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892326519] [2024-12-02 14:45:27,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:27,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:45:27,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:27,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:45:27,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:45:27,772 INFO L87 Difference]: Start difference. First operand 61034 states and 80221 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 14:45:28,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:28,204 INFO L93 Difference]: Finished difference Result 138276 states and 181468 transitions. [2024-12-02 14:45:28,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:45:28,204 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 69 [2024-12-02 14:45:28,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:28,254 INFO L225 Difference]: With dead ends: 138276 [2024-12-02 14:45:28,254 INFO L226 Difference]: Without dead ends: 77421 [2024-12-02 14:45:28,268 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 14:45:28,269 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 462 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:28,269 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 149 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:45:28,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77421 states. [2024-12-02 14:45:28,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77421 to 77112. [2024-12-02 14:45:28,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77112 states, 77111 states have (on average 1.2990883272166098) internal successors, (100174), 77111 states have internal predecessors, (100174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:28,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77112 states to 77112 states and 100174 transitions. [2024-12-02 14:45:28,863 INFO L78 Accepts]: Start accepts. Automaton has 77112 states and 100174 transitions. Word has length 69 [2024-12-02 14:45:28,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:28,863 INFO L471 AbstractCegarLoop]: Abstraction has 77112 states and 100174 transitions. [2024-12-02 14:45:28,863 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 14:45:28,863 INFO L276 IsEmpty]: Start isEmpty. Operand 77112 states and 100174 transitions. [2024-12-02 14:45:28,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-02 14:45:28,866 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:28,867 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 14:45:28,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 14:45:28,867 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:28,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:28,867 INFO L85 PathProgramCache]: Analyzing trace with hash 2022495301, now seen corresponding path program 1 times [2024-12-02 14:45:28,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:28,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384616024] [2024-12-02 14:45:28,867 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:28,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:28,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:28,961 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:45:28,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:28,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384616024] [2024-12-02 14:45:28,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384616024] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:45:28,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126090858] [2024-12-02 14:45:28,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:28,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:45:28,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:45:28,964 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:45:28,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 14:45:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:29,069 INFO L256 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 14:45:29,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:45:29,244 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:45:29,245 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:45:29,336 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:45:29,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126090858] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:45:29,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:45:29,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-12-02 14:45:29,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702985443] [2024-12-02 14:45:29,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:45:29,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 14:45:29,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:29,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 14:45:29,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-12-02 14:45:29,338 INFO L87 Difference]: Start difference. First operand 77112 states and 100174 transitions. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:29,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:29,935 INFO L93 Difference]: Finished difference Result 157663 states and 205680 transitions. [2024-12-02 14:45:29,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 14:45:29,936 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-12-02 14:45:29,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:30,017 INFO L225 Difference]: With dead ends: 157663 [2024-12-02 14:45:30,018 INFO L226 Difference]: Without dead ends: 97300 [2024-12-02 14:45:30,046 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 128 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-12-02 14:45:30,046 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 1228 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1228 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:30,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1228 Valid, 405 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 14:45:30,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97300 states. [2024-12-02 14:45:30,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97300 to 80601. [2024-12-02 14:45:30,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80601 states, 80600 states have (on average 1.2975558312655087) internal successors, (104583), 80600 states have internal predecessors, (104583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:30,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80601 states to 80601 states and 104583 transitions. [2024-12-02 14:45:30,919 INFO L78 Accepts]: Start accepts. Automaton has 80601 states and 104583 transitions. Word has length 69 [2024-12-02 14:45:30,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:30,919 INFO L471 AbstractCegarLoop]: Abstraction has 80601 states and 104583 transitions. [2024-12-02 14:45:30,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:30,920 INFO L276 IsEmpty]: Start isEmpty. Operand 80601 states and 104583 transitions. [2024-12-02 14:45:30,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-02 14:45:30,922 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:30,922 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:45:30,928 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 14:45:31,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:45:31,122 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:31,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:31,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1494386851, now seen corresponding path program 1 times [2024-12-02 14:45:31,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:31,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679938204] [2024-12-02 14:45:31,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:31,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:31,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:31,203 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:45:31,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:31,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679938204] [2024-12-02 14:45:31,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679938204] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:45:31,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156975735] [2024-12-02 14:45:31,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:31,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:45:31,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:45:31,205 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:45:31,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 14:45:31,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:31,312 INFO L256 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 14:45:31,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:45:31,519 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:45:31,520 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:45:31,755 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:45:31,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156975735] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:45:31,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:45:31,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-12-02 14:45:31,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929809070] [2024-12-02 14:45:31,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:45:31,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 14:45:31,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:31,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 14:45:31,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-12-02 14:45:31,756 INFO L87 Difference]: Start difference. First operand 80601 states and 104583 transitions. Second operand has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 10 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:32,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:32,116 INFO L93 Difference]: Finished difference Result 161484 states and 210426 transitions. [2024-12-02 14:45:32,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 14:45:32,116 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 10 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-12-02 14:45:32,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:32,208 INFO L225 Difference]: With dead ends: 161484 [2024-12-02 14:45:32,208 INFO L226 Difference]: Without dead ends: 119214 [2024-12-02 14:45:32,238 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 130 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-12-02 14:45:32,239 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 817 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:32,239 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 280 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:45:32,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119214 states. [2024-12-02 14:45:33,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119214 to 91256. [2024-12-02 14:45:33,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91256 states, 91255 states have (on average 1.298339816996329) internal successors, (118480), 91255 states have internal predecessors, (118480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:33,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91256 states to 91256 states and 118480 transitions. [2024-12-02 14:45:33,259 INFO L78 Accepts]: Start accepts. Automaton has 91256 states and 118480 transitions. Word has length 70 [2024-12-02 14:45:33,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:33,259 INFO L471 AbstractCegarLoop]: Abstraction has 91256 states and 118480 transitions. [2024-12-02 14:45:33,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 10 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:45:33,259 INFO L276 IsEmpty]: Start isEmpty. Operand 91256 states and 118480 transitions. [2024-12-02 14:45:33,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-12-02 14:45:33,262 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:33,262 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 14:45:33,268 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 14:45:33,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:45:33,463 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:33,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:33,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1653225065, now seen corresponding path program 1 times [2024-12-02 14:45:33,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:33,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842216672] [2024-12-02 14:45:33,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:33,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:33,764 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:45:33,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:33,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842216672] [2024-12-02 14:45:33,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842216672] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:45:33,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603908915] [2024-12-02 14:45:33,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:33,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:45:33,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:45:33,766 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:45:33,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 14:45:33,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:33,891 INFO L256 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 14:45:33,894 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:45:35,024 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:45:35,024 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:45:35,747 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:45:35,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603908915] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:45:35,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:45:35,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2024-12-02 14:45:35,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106265428] [2024-12-02 14:45:35,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:45:35,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-12-02 14:45:35,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:35,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-12-02 14:45:35,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=892, Unknown=0, NotChecked=0, Total=992 [2024-12-02 14:45:35,749 INFO L87 Difference]: Start difference. First operand 91256 states and 118480 transitions. Second operand has 32 states, 32 states have (on average 6.125) internal successors, (196), 32 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:46:27,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:46:27,686 INFO L93 Difference]: Finished difference Result 968934 states and 1256693 transitions. [2024-12-02 14:46:27,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 767 states. [2024-12-02 14:46:27,687 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.125) internal successors, (196), 32 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-12-02 14:46:27,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:46:28,647 INFO L225 Difference]: With dead ends: 968934 [2024-12-02 14:46:28,647 INFO L226 Difference]: Without dead ends: 878672 [2024-12-02 14:46:28,774 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 915 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 795 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317452 ImplicationChecksByTransitivity, 41.2s TimeCoverageRelationStatistics Valid=55032, Invalid=579380, Unknown=0, NotChecked=0, Total=634412 [2024-12-02 14:46:28,775 INFO L435 NwaCegarLoop]: 295 mSDtfsCounter, 28268 mSDsluCounter, 6413 mSDsCounter, 0 mSdLazyCounter, 9124 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28268 SdHoareTripleChecker+Valid, 6708 SdHoareTripleChecker+Invalid, 9649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 9124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2024-12-02 14:46:28,776 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28268 Valid, 6708 Invalid, 9649 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [525 Valid, 9124 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2024-12-02 14:46:29,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878672 states. [2024-12-02 14:46:33,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878672 to 167750. [2024-12-02 14:46:33,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167750 states, 167749 states have (on average 1.2996441111422423) internal successors, (218014), 167749 states have internal predecessors, (218014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:46:33,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167750 states to 167750 states and 218014 transitions. [2024-12-02 14:46:33,637 INFO L78 Accepts]: Start accepts. Automaton has 167750 states and 218014 transitions. Word has length 71 [2024-12-02 14:46:33,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:46:33,637 INFO L471 AbstractCegarLoop]: Abstraction has 167750 states and 218014 transitions. [2024-12-02 14:46:33,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.125) internal successors, (196), 32 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:46:33,637 INFO L276 IsEmpty]: Start isEmpty. Operand 167750 states and 218014 transitions. [2024-12-02 14:46:33,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-12-02 14:46:33,639 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:46:33,639 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 14:46:33,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-12-02 14:46:33,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-12-02 14:46:33,840 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:46:33,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:46:33,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1601087637, now seen corresponding path program 1 times [2024-12-02 14:46:33,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:46:33,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257645300] [2024-12-02 14:46:33,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:46:33,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:46:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:46:33,869 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:46:33,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:46:33,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257645300] [2024-12-02 14:46:33,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257645300] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:46:33,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:46:33,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:46:33,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912310494] [2024-12-02 14:46:33,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:46:33,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:46:33,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:46:33,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:46:33,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:46:33,870 INFO L87 Difference]: Start difference. First operand 167750 states and 218014 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:46:34,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:46:34,188 INFO L93 Difference]: Finished difference Result 199625 states and 259262 transitions. [2024-12-02 14:46:34,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:46:34,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2024-12-02 14:46:34,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:46:34,584 INFO L225 Difference]: With dead ends: 199625 [2024-12-02 14:46:34,584 INFO L226 Difference]: Without dead ends: 145723 [2024-12-02 14:46:34,608 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:46:34,609 INFO L435 NwaCegarLoop]: 183 mSDtfsCounter, 59 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:46:34,609 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 285 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:46:34,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145723 states. [2024-12-02 14:46:35,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145723 to 145721. [2024-12-02 14:46:36,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145721 states, 145720 states have (on average 1.283132034037881) internal successors, (186978), 145720 states have internal predecessors, (186978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:46:36,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145721 states to 145721 states and 186978 transitions. [2024-12-02 14:46:36,178 INFO L78 Accepts]: Start accepts. Automaton has 145721 states and 186978 transitions. Word has length 72 [2024-12-02 14:46:36,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:46:36,178 INFO L471 AbstractCegarLoop]: Abstraction has 145721 states and 186978 transitions. [2024-12-02 14:46:36,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:46:36,179 INFO L276 IsEmpty]: Start isEmpty. Operand 145721 states and 186978 transitions. [2024-12-02 14:46:36,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-12-02 14:46:36,181 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:46:36,181 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 14:46:36,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 14:46:36,182 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:46:36,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:46:36,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1087206807, now seen corresponding path program 1 times [2024-12-02 14:46:36,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:46:36,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559804165] [2024-12-02 14:46:36,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:46:36,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:46:36,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:46:36,203 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 14:46:36,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:46:36,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559804165] [2024-12-02 14:46:36,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559804165] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:46:36,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:46:36,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:46:36,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535307108] [2024-12-02 14:46:36,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:46:36,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:46:36,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:46:36,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:46:36,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:46:36,204 INFO L87 Difference]: Start difference. First operand 145721 states and 186978 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 14:46:36,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:46:36,581 INFO L93 Difference]: Finished difference Result 252204 states and 324142 transitions. [2024-12-02 14:46:36,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:46:36,582 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 72 [2024-12-02 14:46:36,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:46:36,676 INFO L225 Difference]: With dead ends: 252204 [2024-12-02 14:46:36,676 INFO L226 Difference]: Without dead ends: 107838 [2024-12-02 14:46:36,943 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:46:36,944 INFO L435 NwaCegarLoop]: 93 mSDtfsCounter, 88 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:46:36,944 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 146 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:46:36,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107838 states. [2024-12-02 14:46:37,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107838 to 105870. [2024-12-02 14:46:37,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105870 states, 105869 states have (on average 1.2694462023821893) internal successors, (134395), 105869 states have internal predecessors, (134395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:46:37,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105870 states to 105870 states and 134395 transitions. [2024-12-02 14:46:37,949 INFO L78 Accepts]: Start accepts. Automaton has 105870 states and 134395 transitions. Word has length 72 [2024-12-02 14:46:37,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:46:37,949 INFO L471 AbstractCegarLoop]: Abstraction has 105870 states and 134395 transitions. [2024-12-02 14:46:37,949 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 14:46:37,950 INFO L276 IsEmpty]: Start isEmpty. Operand 105870 states and 134395 transitions. [2024-12-02 14:46:37,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-12-02 14:46:37,953 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:46:37,953 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 14:46:37,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 14:46:37,953 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:46:37,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:46:37,953 INFO L85 PathProgramCache]: Analyzing trace with hash -360511201, now seen corresponding path program 1 times [2024-12-02 14:46:37,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:46:37,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709638457] [2024-12-02 14:46:37,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:46:37,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:46:37,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:46:39,325 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:46:39,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:46:39,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709638457] [2024-12-02 14:46:39,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709638457] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:46:39,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256279173] [2024-12-02 14:46:39,326 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:46:39,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:46:39,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:46:39,327 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:46:39,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 14:46:39,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:46:39,426 INFO L256 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-12-02 14:46:39,427 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:46:42,199 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:46:42,199 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:46:43,624 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:46:43,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256279173] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:46:43,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:46:43,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 19, 16] total 53 [2024-12-02 14:46:43,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137515817] [2024-12-02 14:46:43,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:46:43,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-12-02 14:46:43,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:46:43,626 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-12-02 14:46:43,626 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=2541, Unknown=0, NotChecked=0, Total=2756 [2024-12-02 14:46:43,626 INFO L87 Difference]: Start difference. First operand 105870 states and 134395 transitions. Second operand has 53 states, 53 states have (on average 3.849056603773585) internal successors, (204), 53 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:47:00,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:47:00,901 INFO L93 Difference]: Finished difference Result 260069 states and 329574 transitions. [2024-12-02 14:47:00,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2024-12-02 14:47:00,902 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 3.849056603773585) internal successors, (204), 53 states have internal predecessors, (204), 0 states have call successors, (0), 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 73 [2024-12-02 14:47:00,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:47:01,077 INFO L225 Difference]: With dead ends: 260069 [2024-12-02 14:47:01,077 INFO L226 Difference]: Without dead ends: 200811 [2024-12-02 14:47:01,124 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5745 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=3898, Invalid=19054, Unknown=0, NotChecked=0, Total=22952 [2024-12-02 14:47:01,125 INFO L435 NwaCegarLoop]: 267 mSDtfsCounter, 4358 mSDsluCounter, 7805 mSDsCounter, 0 mSdLazyCounter, 4943 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4358 SdHoareTripleChecker+Valid, 8072 SdHoareTripleChecker+Invalid, 5019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 4943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:47:01,125 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4358 Valid, 8072 Invalid, 5019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 4943 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-12-02 14:47:01,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200811 states. [2024-12-02 14:47:02,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200811 to 112703. [2024-12-02 14:47:02,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112703 states, 112702 states have (on average 1.2659935049954747) internal successors, (142680), 112702 states have internal predecessors, (142680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:47:02,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112703 states to 112703 states and 142680 transitions. [2024-12-02 14:47:02,563 INFO L78 Accepts]: Start accepts. Automaton has 112703 states and 142680 transitions. Word has length 73 [2024-12-02 14:47:02,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:47:02,563 INFO L471 AbstractCegarLoop]: Abstraction has 112703 states and 142680 transitions. [2024-12-02 14:47:02,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 3.849056603773585) internal successors, (204), 53 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:47:02,563 INFO L276 IsEmpty]: Start isEmpty. Operand 112703 states and 142680 transitions. [2024-12-02 14:47:02,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-12-02 14:47:02,565 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:47:02,565 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:47:02,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 14:47:02,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-02 14:47:02,766 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:47:02,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:47:02,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1557673133, now seen corresponding path program 1 times [2024-12-02 14:47:02,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:47:02,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949868868] [2024-12-02 14:47:02,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:47:02,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:47:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:47:03,320 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:47:03,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:47:03,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949868868] [2024-12-02 14:47:03,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949868868] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:47:03,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226490739] [2024-12-02 14:47:03,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:47:03,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:47:03,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:47:03,323 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:47:03,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 14:47:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:47:03,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 14:47:03,447 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:47:04,371 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:47:04,371 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:47:04,823 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:47:04,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226490739] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:47:04,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:47:04,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 28 [2024-12-02 14:47:04,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212151761] [2024-12-02 14:47:04,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:47:04,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 14:47:04,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:47:04,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 14:47:04,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=662, Unknown=0, NotChecked=0, Total=756 [2024-12-02 14:47:04,824 INFO L87 Difference]: Start difference. First operand 112703 states and 142680 transitions. Second operand has 28 states, 28 states have (on average 7.178571428571429) internal successors, (201), 28 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:47:06,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:47:06,448 INFO L93 Difference]: Finished difference Result 206833 states and 261568 transitions. [2024-12-02 14:47:06,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-12-02 14:47:06,449 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.178571428571429) internal successors, (201), 28 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-12-02 14:47:06,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:47:06,569 INFO L225 Difference]: With dead ends: 206833 [2024-12-02 14:47:06,569 INFO L226 Difference]: Without dead ends: 167682 [2024-12-02 14:47:06,592 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=456, Invalid=1706, Unknown=0, NotChecked=0, Total=2162 [2024-12-02 14:47:06,592 INFO L435 NwaCegarLoop]: 195 mSDtfsCounter, 1633 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1633 SdHoareTripleChecker+Valid, 1696 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:47:06,593 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1633 Valid, 1696 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 14:47:06,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167682 states. [2024-12-02 14:47:07,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167682 to 121377. [2024-12-02 14:47:07,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121377 states, 121376 states have (on average 1.2640802135512788) internal successors, (153429), 121376 states have internal predecessors, (153429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:47:07,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121377 states to 121377 states and 153429 transitions. [2024-12-02 14:47:07,972 INFO L78 Accepts]: Start accepts. Automaton has 121377 states and 153429 transitions. Word has length 74 [2024-12-02 14:47:07,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:47:07,972 INFO L471 AbstractCegarLoop]: Abstraction has 121377 states and 153429 transitions. [2024-12-02 14:47:07,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.178571428571429) internal successors, (201), 28 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:47:07,972 INFO L276 IsEmpty]: Start isEmpty. Operand 121377 states and 153429 transitions. [2024-12-02 14:47:07,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-12-02 14:47:07,974 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:47:07,974 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:47:07,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 14:47:08,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-02 14:47:08,175 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:47:08,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:47:08,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1891211123, now seen corresponding path program 1 times [2024-12-02 14:47:08,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:47:08,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787177037] [2024-12-02 14:47:08,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:47:08,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:47:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:47:08,209 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 14:47:08,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:47:08,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787177037] [2024-12-02 14:47:08,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787177037] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:47:08,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:47:08,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:47:08,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327148186] [2024-12-02 14:47:08,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:47:08,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:47:08,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:47:08,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:47:08,211 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:47:08,211 INFO L87 Difference]: Start difference. First operand 121377 states and 153429 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:47:08,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:47:08,543 INFO L93 Difference]: Finished difference Result 207469 states and 262703 transitions. [2024-12-02 14:47:08,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:47:08,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-12-02 14:47:08,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:47:08,625 INFO L225 Difference]: With dead ends: 207469 [2024-12-02 14:47:08,625 INFO L226 Difference]: Without dead ends: 95923 [2024-12-02 14:47:08,662 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:47:08,663 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 78 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:47:08,663 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 117 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:47:08,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95923 states. [2024-12-02 14:47:09,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95923 to 95047. [2024-12-02 14:47:09,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95047 states, 95046 states have (on average 1.2455021778928097) internal successors, (118380), 95046 states have internal predecessors, (118380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:47:09,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95047 states to 95047 states and 118380 transitions. [2024-12-02 14:47:09,767 INFO L78 Accepts]: Start accepts. Automaton has 95047 states and 118380 transitions. Word has length 74 [2024-12-02 14:47:09,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:47:09,767 INFO L471 AbstractCegarLoop]: Abstraction has 95047 states and 118380 transitions. [2024-12-02 14:47:09,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:47:09,767 INFO L276 IsEmpty]: Start isEmpty. Operand 95047 states and 118380 transitions. [2024-12-02 14:47:09,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 14:47:09,786 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:47:09,786 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:47:09,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-02 14:47:09,787 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:47:09,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:47:09,787 INFO L85 PathProgramCache]: Analyzing trace with hash 164219623, now seen corresponding path program 1 times [2024-12-02 14:47:09,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:47:09,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432711821] [2024-12-02 14:47:09,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:47:09,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:47:09,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:47:10,402 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 30 proven. 21 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-12-02 14:47:10,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:47:10,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432711821] [2024-12-02 14:47:10,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432711821] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:47:10,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527950040] [2024-12-02 14:47:10,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:47:10,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:47:10,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:47:10,404 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:47:10,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 14:47:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:47:10,530 INFO L256 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 14:47:10,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:47:11,043 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 32 proven. 49 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 14:47:11,043 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:47:12,228 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 58 proven. 23 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 14:47:12,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527950040] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:47:12,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:47:12,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 13] total 27 [2024-12-02 14:47:12,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352612883] [2024-12-02 14:47:12,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:47:12,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 14:47:12,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:47:12,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 14:47:12,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=641, Unknown=0, NotChecked=0, Total=756 [2024-12-02 14:47:12,230 INFO L87 Difference]: Start difference. First operand 95047 states and 118380 transitions. Second operand has 28 states, 28 states have (on average 9.821428571428571) internal successors, (275), 27 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:47:15,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:47:15,279 INFO L93 Difference]: Finished difference Result 338249 states and 416823 transitions. [2024-12-02 14:47:15,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-12-02 14:47:15,280 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.821428571428571) internal successors, (275), 27 states have internal predecessors, (275), 0 states have call successors, (0), 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 117 [2024-12-02 14:47:15,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:47:15,556 INFO L225 Difference]: With dead ends: 338249 [2024-12-02 14:47:15,556 INFO L226 Difference]: Without dead ends: 289693 [2024-12-02 14:47:15,623 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2329 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1969, Invalid=6403, Unknown=0, NotChecked=0, Total=8372 [2024-12-02 14:47:15,623 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 2052 mSDsluCounter, 1538 mSDsCounter, 0 mSdLazyCounter, 1502 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2052 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 14:47:15,624 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2052 Valid, 1646 Invalid, 1551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1502 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 14:47:15,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289693 states. [2024-12-02 14:47:17,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289693 to 151461. [2024-12-02 14:47:17,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151461 states, 151460 states have (on average 1.249399181301994) internal successors, (189234), 151460 states have internal predecessors, (189234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:47:17,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151461 states to 151461 states and 189234 transitions. [2024-12-02 14:47:17,681 INFO L78 Accepts]: Start accepts. Automaton has 151461 states and 189234 transitions. Word has length 117 [2024-12-02 14:47:17,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:47:17,681 INFO L471 AbstractCegarLoop]: Abstraction has 151461 states and 189234 transitions. [2024-12-02 14:47:17,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.821428571428571) internal successors, (275), 27 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:47:17,681 INFO L276 IsEmpty]: Start isEmpty. Operand 151461 states and 189234 transitions. [2024-12-02 14:47:17,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-12-02 14:47:17,694 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:47:17,694 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:47:17,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 14:47:17,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 14:47:17,894 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:47:17,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:47:17,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1880708762, now seen corresponding path program 1 times [2024-12-02 14:47:17,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:47:17,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760118847] [2024-12-02 14:47:17,895 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:47:17,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:47:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:47:17,923 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-12-02 14:47:17,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:47:17,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760118847] [2024-12-02 14:47:17,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760118847] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:47:17,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:47:17,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:47:17,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074853990] [2024-12-02 14:47:17,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:47:17,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:47:17,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:47:17,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:47:17,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:47:17,925 INFO L87 Difference]: Start difference. First operand 151461 states and 189234 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:47:18,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:47:18,328 INFO L93 Difference]: Finished difference Result 283517 states and 354084 transitions. [2024-12-02 14:47:18,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:47:18,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 118 [2024-12-02 14:47:18,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:47:18,732 INFO L225 Difference]: With dead ends: 283517 [2024-12-02 14:47:18,732 INFO L226 Difference]: Without dead ends: 132223 [2024-12-02 14:47:18,763 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:47:18,763 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 70 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:47:18,763 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 99 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:47:18,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132223 states. [2024-12-02 14:47:19,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132223 to 131861. [2024-12-02 14:47:19,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131861 states, 131860 states have (on average 1.2322084028515092) internal successors, (162479), 131860 states have internal predecessors, (162479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:47:20,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131861 states to 131861 states and 162479 transitions. [2024-12-02 14:47:20,057 INFO L78 Accepts]: Start accepts. Automaton has 131861 states and 162479 transitions. Word has length 118 [2024-12-02 14:47:20,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:47:20,057 INFO L471 AbstractCegarLoop]: Abstraction has 131861 states and 162479 transitions. [2024-12-02 14:47:20,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:47:20,057 INFO L276 IsEmpty]: Start isEmpty. Operand 131861 states and 162479 transitions. [2024-12-02 14:47:20,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-12-02 14:47:20,075 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:47:20,075 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:47:20,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-12-02 14:47:20,075 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:47:20,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:47:20,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1621382645, now seen corresponding path program 1 times [2024-12-02 14:47:20,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:47:20,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518393060] [2024-12-02 14:47:20,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:47:20,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:47:20,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:47:20,158 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-12-02 14:47:20,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:47:20,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518393060] [2024-12-02 14:47:20,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518393060] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:47:20,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:47:20,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:47:20,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114139146] [2024-12-02 14:47:20,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:47:20,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:47:20,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:47:20,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:47:20,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:47:20,159 INFO L87 Difference]: Start difference. First operand 131861 states and 162479 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:47:20,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:47:20,820 INFO L93 Difference]: Finished difference Result 213057 states and 262050 transitions. [2024-12-02 14:47:20,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:47:20,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 118 [2024-12-02 14:47:20,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:47:20,877 INFO L225 Difference]: With dead ends: 213057 [2024-12-02 14:47:20,877 INFO L226 Difference]: Without dead ends: 83575 [2024-12-02 14:47:20,898 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:47:20,898 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 51 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:47:20,898 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 224 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:47:20,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83575 states. [2024-12-02 14:47:21,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83575 to 82712. [2024-12-02 14:47:21,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82712 states, 82711 states have (on average 1.2024277302898043) internal successors, (99454), 82711 states have internal predecessors, (99454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:47:21,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82712 states to 82712 states and 99454 transitions. [2024-12-02 14:47:21,478 INFO L78 Accepts]: Start accepts. Automaton has 82712 states and 99454 transitions. Word has length 118 [2024-12-02 14:47:21,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:47:21,478 INFO L471 AbstractCegarLoop]: Abstraction has 82712 states and 99454 transitions. [2024-12-02 14:47:21,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:47:21,479 INFO L276 IsEmpty]: Start isEmpty. Operand 82712 states and 99454 transitions. [2024-12-02 14:47:21,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-12-02 14:47:21,675 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:47:21,675 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 14:47:21,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-12-02 14:47:21,676 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:47:21,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:47:21,676 INFO L85 PathProgramCache]: Analyzing trace with hash 43526760, now seen corresponding path program 1 times [2024-12-02 14:47:21,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:47:21,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897102970] [2024-12-02 14:47:21,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:47:21,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:47:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:47:22,218 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 21 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:47:22,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:47:22,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897102970] [2024-12-02 14:47:22,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897102970] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:47:22,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269450132] [2024-12-02 14:47:22,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:47:22,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:47:22,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:47:22,220 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:47:22,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 14:47:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:47:22,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 14:47:22,343 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:47:22,882 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 23 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:47:22,882 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:47:24,113 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 21 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:47:24,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269450132] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:47:24,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:47:24,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 30 [2024-12-02 14:47:24,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027430745] [2024-12-02 14:47:24,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:47:24,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-12-02 14:47:24,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:47:24,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-12-02 14:47:24,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=818, Unknown=0, NotChecked=0, Total=930 [2024-12-02 14:47:24,114 INFO L87 Difference]: Start difference. First operand 82712 states and 99454 transitions. Second operand has 31 states, 31 states have (on average 9.451612903225806) internal successors, (293), 30 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:47:25,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:47:25,863 INFO L93 Difference]: Finished difference Result 127368 states and 153427 transitions. [2024-12-02 14:47:25,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-12-02 14:47:25,864 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 9.451612903225806) internal successors, (293), 30 states have internal predecessors, (293), 0 states have call successors, (0), 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 118 [2024-12-02 14:47:25,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:47:25,934 INFO L225 Difference]: With dead ends: 127368 [2024-12-02 14:47:25,934 INFO L226 Difference]: Without dead ends: 97229 [2024-12-02 14:47:25,955 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=805, Invalid=2977, Unknown=0, NotChecked=0, Total=3782 [2024-12-02 14:47:25,955 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 2259 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 1740 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2259 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 1777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 14:47:25,956 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2259 Valid, 1486 Invalid, 1777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1740 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 14:47:25,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97229 states. [2024-12-02 14:47:26,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97229 to 81901. [2024-12-02 14:47:26,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81901 states, 81900 states have (on average 1.2008547008547008) internal successors, (98350), 81900 states have internal predecessors, (98350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:47:26,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81901 states to 81901 states and 98350 transitions. [2024-12-02 14:47:26,766 INFO L78 Accepts]: Start accepts. Automaton has 81901 states and 98350 transitions. Word has length 118 [2024-12-02 14:47:26,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:47:26,767 INFO L471 AbstractCegarLoop]: Abstraction has 81901 states and 98350 transitions. [2024-12-02 14:47:26,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 9.451612903225806) internal successors, (293), 30 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:47:26,767 INFO L276 IsEmpty]: Start isEmpty. Operand 81901 states and 98350 transitions. [2024-12-02 14:47:26,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-12-02 14:47:26,775 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:47:26,775 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:47:26,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 14:47:26,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:47:26,975 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:47:26,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:47:26,976 INFO L85 PathProgramCache]: Analyzing trace with hash -966506893, now seen corresponding path program 1 times [2024-12-02 14:47:26,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:47:26,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897224506] [2024-12-02 14:47:26,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:47:26,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:47:27,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:47:27,364 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 58 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 14:47:27,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:47:27,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897224506] [2024-12-02 14:47:27,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897224506] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:47:27,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259722638] [2024-12-02 14:47:27,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:47:27,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:47:27,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:47:27,366 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:47:27,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 14:47:27,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:47:27,489 INFO L256 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-12-02 14:47:27,491 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:47:28,376 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 53 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 14:47:28,376 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:47:29,260 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 49 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 14:47:29,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259722638] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:47:29,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:47:29,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 41 [2024-12-02 14:47:29,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984857574] [2024-12-02 14:47:29,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:47:29,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-12-02 14:47:29,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:47:29,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-12-02 14:47:29,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1476, Unknown=0, NotChecked=0, Total=1640 [2024-12-02 14:47:29,262 INFO L87 Difference]: Start difference. First operand 81901 states and 98350 transitions. Second operand has 41 states, 41 states have (on average 7.902439024390244) internal successors, (324), 41 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:47:31,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:47:31,643 INFO L93 Difference]: Finished difference Result 160793 states and 192282 transitions. [2024-12-02 14:47:31,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-12-02 14:47:31,644 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 7.902439024390244) internal successors, (324), 41 states have internal predecessors, (324), 0 states have call successors, (0), 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 119 [2024-12-02 14:47:31,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:47:31,725 INFO L225 Difference]: With dead ends: 160793 [2024-12-02 14:47:31,725 INFO L226 Difference]: Without dead ends: 106276 [2024-12-02 14:47:31,754 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1421 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1309, Invalid=5831, Unknown=0, NotChecked=0, Total=7140 [2024-12-02 14:47:31,755 INFO L435 NwaCegarLoop]: 253 mSDtfsCounter, 1733 mSDsluCounter, 4391 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1733 SdHoareTripleChecker+Valid, 4644 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 14:47:31,755 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1733 Valid, 4644 Invalid, 1362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 14:47:31,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106276 states. [2024-12-02 14:47:32,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106276 to 99741. [2024-12-02 14:47:32,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99741 states, 99740 states have (on average 1.200090234609986) internal successors, (119697), 99740 states have internal predecessors, (119697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:47:32,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99741 states to 99741 states and 119697 transitions. [2024-12-02 14:47:32,605 INFO L78 Accepts]: Start accepts. Automaton has 99741 states and 119697 transitions. Word has length 119 [2024-12-02 14:47:32,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:47:32,605 INFO L471 AbstractCegarLoop]: Abstraction has 99741 states and 119697 transitions. [2024-12-02 14:47:32,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 7.902439024390244) internal successors, (324), 41 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:47:32,605 INFO L276 IsEmpty]: Start isEmpty. Operand 99741 states and 119697 transitions. [2024-12-02 14:47:32,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-12-02 14:47:32,611 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:47:32,611 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:47:32,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 14:47:32,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:47:32,812 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:47:32,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:47:32,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1914503597, now seen corresponding path program 2 times [2024-12-02 14:47:32,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:47:32,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253860495] [2024-12-02 14:47:32,813 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 14:47:32,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:47:32,842 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 14:47:32,842 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 14:47:33,617 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 13 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:47:33,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:47:33,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253860495] [2024-12-02 14:47:33,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253860495] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:47:33,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938089077] [2024-12-02 14:47:33,618 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 14:47:33,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:47:33,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:47:33,619 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:47:33,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 14:47:33,746 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 14:47:33,746 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 14:47:33,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 14:47:33,749 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:47:34,374 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 55 proven. 28 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 14:47:34,374 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:47:34,990 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 62 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 14:47:34,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938089077] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:47:34,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:47:34,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 12, 11] total 37 [2024-12-02 14:47:34,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359020382] [2024-12-02 14:47:34,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:47:34,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-12-02 14:47:34,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:47:34,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-12-02 14:47:34,991 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1232, Unknown=0, NotChecked=0, Total=1332 [2024-12-02 14:47:34,991 INFO L87 Difference]: Start difference. First operand 99741 states and 119697 transitions. Second operand has 37 states, 37 states have (on average 8.594594594594595) internal successors, (318), 37 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:47:42,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:47:42,327 INFO L93 Difference]: Finished difference Result 135707 states and 161714 transitions. [2024-12-02 14:47:42,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2024-12-02 14:47:42,327 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 8.594594594594595) internal successors, (318), 37 states have internal predecessors, (318), 0 states have call successors, (0), 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 119 [2024-12-02 14:47:42,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:47:42,403 INFO L225 Difference]: With dead ends: 135707 [2024-12-02 14:47:42,404 INFO L226 Difference]: Without dead ends: 101673 [2024-12-02 14:47:42,429 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4821 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1766, Invalid=16324, Unknown=0, NotChecked=0, Total=18090 [2024-12-02 14:47:42,430 INFO L435 NwaCegarLoop]: 481 mSDtfsCounter, 1120 mSDsluCounter, 12326 mSDsCounter, 0 mSdLazyCounter, 6027 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 12807 SdHoareTripleChecker+Invalid, 6043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 6027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-12-02 14:47:42,430 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1120 Valid, 12807 Invalid, 6043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 6027 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-12-02 14:47:42,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101673 states. [2024-12-02 14:47:42,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101673 to 83092. [2024-12-02 14:47:43,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83092 states, 83091 states have (on average 1.1996365430672395) internal successors, (99679), 83091 states have internal predecessors, (99679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:47:43,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83092 states to 83092 states and 99679 transitions. [2024-12-02 14:47:43,090 INFO L78 Accepts]: Start accepts. Automaton has 83092 states and 99679 transitions. Word has length 119 [2024-12-02 14:47:43,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:47:43,090 INFO L471 AbstractCegarLoop]: Abstraction has 83092 states and 99679 transitions. [2024-12-02 14:47:43,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 8.594594594594595) internal successors, (318), 37 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:47:43,090 INFO L276 IsEmpty]: Start isEmpty. Operand 83092 states and 99679 transitions. [2024-12-02 14:47:43,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-12-02 14:47:43,098 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:47:43,098 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 14:47:43,104 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 14:47:43,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-12-02 14:47:43,298 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:47:43,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:47:43,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1624672499, now seen corresponding path program 2 times [2024-12-02 14:47:43,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:47:43,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438068014] [2024-12-02 14:47:43,299 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 14:47:43,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:47:43,345 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 14:47:43,345 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 14:47:43,790 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 30 proven. 24 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-12-02 14:47:43,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:47:43,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438068014] [2024-12-02 14:47:43,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438068014] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:47:43,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908047842] [2024-12-02 14:47:43,791 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 14:47:43,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:47:43,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:47:43,792 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:47:43,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 14:47:43,929 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 14:47:43,929 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 14:47:43,931 INFO L256 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-12-02 14:47:43,933 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:47:44,442 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 14:47:44,442 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:47:44,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908047842] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:47:44,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:47:44,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 23 [2024-12-02 14:47:44,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005151564] [2024-12-02 14:47:44,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:47:44,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 14:47:44,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:47:44,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 14:47:44,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2024-12-02 14:47:44,443 INFO L87 Difference]: Start difference. First operand 83092 states and 99679 transitions. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:47:44,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:47:44,981 INFO L93 Difference]: Finished difference Result 113806 states and 136403 transitions. [2024-12-02 14:47:44,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 14:47:44,982 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 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 120 [2024-12-02 14:47:44,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:47:45,038 INFO L225 Difference]: With dead ends: 113806 [2024-12-02 14:47:45,038 INFO L226 Difference]: Without dead ends: 90135 [2024-12-02 14:47:45,051 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=742, Unknown=0, NotChecked=0, Total=930 [2024-12-02 14:47:45,052 INFO L435 NwaCegarLoop]: 153 mSDtfsCounter, 653 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:47:45,052 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 861 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:47:45,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90135 states. [2024-12-02 14:47:45,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90135 to 78666. [2024-12-02 14:47:45,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78666 states, 78665 states have (on average 1.200216106273438) internal successors, (94415), 78665 states have internal predecessors, (94415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:47:45,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78666 states to 78666 states and 94415 transitions. [2024-12-02 14:47:45,626 INFO L78 Accepts]: Start accepts. Automaton has 78666 states and 94415 transitions. Word has length 120 [2024-12-02 14:47:45,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:47:45,626 INFO L471 AbstractCegarLoop]: Abstraction has 78666 states and 94415 transitions. [2024-12-02 14:47:45,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:47:45,626 INFO L276 IsEmpty]: Start isEmpty. Operand 78666 states and 94415 transitions. [2024-12-02 14:47:45,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-12-02 14:47:45,631 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:47:45,631 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 14:47:45,637 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 14:47:45,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-12-02 14:47:45,832 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:47:45,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:47:45,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1474095239, now seen corresponding path program 1 times [2024-12-02 14:47:45,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:47:45,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461922555] [2024-12-02 14:47:45,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:47:45,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:47:45,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:47:46,260 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 33 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:47:46,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:47:46,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461922555] [2024-12-02 14:47:46,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461922555] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:47:46,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253826772] [2024-12-02 14:47:46,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:47:46,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:47:46,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:47:46,262 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:47:46,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 14:47:46,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:47:46,405 INFO L256 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-12-02 14:47:46,407 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:47:52,079 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 33 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:47:52,079 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:48:17,126 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 23 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:48:17,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253826772] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:48:17,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:48:17,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 28, 31] total 67 [2024-12-02 14:48:17,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549336064] [2024-12-02 14:48:17,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:48:17,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-12-02 14:48:17,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:48:17,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-12-02 14:48:17,128 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=3818, Unknown=4, NotChecked=0, Total=4422 [2024-12-02 14:48:17,128 INFO L87 Difference]: Start difference. First operand 78666 states and 94415 transitions. Second operand has 67 states, 67 states have (on average 4.91044776119403) internal successors, (329), 67 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:48:29,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 14:48:42,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 14:48:49,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.80s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 14:49:35,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:49:35,448 INFO L93 Difference]: Finished difference Result 161606 states and 192587 transitions. [2024-12-02 14:49:35,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 458 states. [2024-12-02 14:49:35,448 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 4.91044776119403) internal successors, (329), 67 states have internal predecessors, (329), 0 states have call successors, (0), 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 122 [2024-12-02 14:49:35,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:49:35,541 INFO L225 Difference]: With dead ends: 161606 [2024-12-02 14:49:35,541 INFO L226 Difference]: Without dead ends: 120664 [2024-12-02 14:49:35,585 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 710 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 521 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110192 ImplicationChecksByTransitivity, 73.0s TimeCoverageRelationStatistics Valid=32022, Invalid=240980, Unknown=4, NotChecked=0, Total=273006 [2024-12-02 14:49:35,585 INFO L435 NwaCegarLoop]: 592 mSDtfsCounter, 7456 mSDsluCounter, 13940 mSDsCounter, 0 mSdLazyCounter, 18304 mSolverCounterSat, 273 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7456 SdHoareTripleChecker+Valid, 14532 SdHoareTripleChecker+Invalid, 18578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 18304 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.8s IncrementalHoareTripleChecker+Time [2024-12-02 14:49:35,585 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7456 Valid, 14532 Invalid, 18578 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [273 Valid, 18304 Invalid, 1 Unknown, 0 Unchecked, 24.8s Time] [2024-12-02 14:49:35,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120664 states. [2024-12-02 14:49:36,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120664 to 75058. [2024-12-02 14:49:36,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75058 states, 75057 states have (on average 1.1964906670930093) internal successors, (89805), 75057 states have internal predecessors, (89805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:49:36,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75058 states to 75058 states and 89805 transitions. [2024-12-02 14:49:36,272 INFO L78 Accepts]: Start accepts. Automaton has 75058 states and 89805 transitions. Word has length 122 [2024-12-02 14:49:36,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:49:36,273 INFO L471 AbstractCegarLoop]: Abstraction has 75058 states and 89805 transitions. [2024-12-02 14:49:36,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 4.91044776119403) internal successors, (329), 67 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:49:36,273 INFO L276 IsEmpty]: Start isEmpty. Operand 75058 states and 89805 transitions. [2024-12-02 14:49:36,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-12-02 14:49:36,278 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:49:36,278 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:49:36,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-12-02 14:49:36,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-12-02 14:49:36,479 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:49:36,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:49:36,479 INFO L85 PathProgramCache]: Analyzing trace with hash -858710363, now seen corresponding path program 1 times [2024-12-02 14:49:36,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:49:36,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389204668] [2024-12-02 14:49:36,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:49:36,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:49:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:49:37,119 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 13 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:49:37,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:49:37,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389204668] [2024-12-02 14:49:37,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389204668] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:49:37,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477581177] [2024-12-02 14:49:37,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:49:37,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:49:37,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:49:37,122 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:49:37,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 14:49:37,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:49:37,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-12-02 14:49:37,276 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:49:38,428 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 33 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:49:38,428 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:49:40,232 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 33 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:49:40,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477581177] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:49:40,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:49:40,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 17] total 49 [2024-12-02 14:49:40,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727369484] [2024-12-02 14:49:40,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:49:40,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-12-02 14:49:40,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:49:40,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-12-02 14:49:40,233 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=2178, Unknown=0, NotChecked=0, Total=2352 [2024-12-02 14:49:40,233 INFO L87 Difference]: Start difference. First operand 75058 states and 89805 transitions. Second operand has 49 states, 49 states have (on average 6.836734693877551) internal successors, (335), 49 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:50:57,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:50:57,050 INFO L93 Difference]: Finished difference Result 205456 states and 243036 transitions. [2024-12-02 14:50:57,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 744 states. [2024-12-02 14:50:57,051 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 6.836734693877551) internal successors, (335), 49 states have internal predecessors, (335), 0 states have call successors, (0), 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 124 [2024-12-02 14:50:57,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:50:57,180 INFO L225 Difference]: With dead ends: 205456 [2024-12-02 14:50:57,180 INFO L226 Difference]: Without dead ends: 176120 [2024-12-02 14:50:57,216 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1005 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 788 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275694 ImplicationChecksByTransitivity, 66.2s TimeCoverageRelationStatistics Valid=32359, Invalid=590951, Unknown=0, NotChecked=0, Total=623310 [2024-12-02 14:50:57,216 INFO L435 NwaCegarLoop]: 934 mSDtfsCounter, 4639 mSDsluCounter, 25718 mSDsCounter, 0 mSdLazyCounter, 17183 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4639 SdHoareTripleChecker+Valid, 26652 SdHoareTripleChecker+Invalid, 17277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 17183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:50:57,217 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4639 Valid, 26652 Invalid, 17277 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [94 Valid, 17183 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2024-12-02 14:50:57,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176120 states. [2024-12-02 14:50:58,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176120 to 119566. [2024-12-02 14:50:58,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119566 states, 119565 states have (on average 1.192196713084933) internal successors, (142545), 119565 states have internal predecessors, (142545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:50:58,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119566 states to 119566 states and 142545 transitions. [2024-12-02 14:50:58,325 INFO L78 Accepts]: Start accepts. Automaton has 119566 states and 142545 transitions. Word has length 124 [2024-12-02 14:50:58,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:50:58,325 INFO L471 AbstractCegarLoop]: Abstraction has 119566 states and 142545 transitions. [2024-12-02 14:50:58,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 6.836734693877551) internal successors, (335), 49 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:50:58,325 INFO L276 IsEmpty]: Start isEmpty. Operand 119566 states and 142545 transitions. [2024-12-02 14:50:58,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-02 14:50:58,330 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:50:58,330 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:50:58,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-12-02 14:50:58,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-12-02 14:50:58,531 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:50:58,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:50:58,531 INFO L85 PathProgramCache]: Analyzing trace with hash -632268755, now seen corresponding path program 1 times [2024-12-02 14:50:58,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:50:58,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942870317] [2024-12-02 14:50:58,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:50:58,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:50:58,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:50:59,230 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 24 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:50:59,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:50:59,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942870317] [2024-12-02 14:50:59,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942870317] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:50:59,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618328639] [2024-12-02 14:50:59,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:50:59,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:50:59,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:50:59,232 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:50:59,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 14:50:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:50:59,377 INFO L256 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-12-02 14:50:59,379 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:51:01,198 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 24 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:51:01,198 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:51:03,199 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 24 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:51:03,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618328639] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:51:03,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:51:03,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 18] total 47 [2024-12-02 14:51:03,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217357699] [2024-12-02 14:51:03,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:51:03,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-12-02 14:51:03,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:51:03,201 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-12-02 14:51:03,201 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1987, Unknown=0, NotChecked=0, Total=2162 [2024-12-02 14:51:03,201 INFO L87 Difference]: Start difference. First operand 119566 states and 142545 transitions. Second operand has 47 states, 47 states have (on average 7.191489361702128) internal successors, (338), 47 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:51:06,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:51:06,385 INFO L93 Difference]: Finished difference Result 178245 states and 211983 transitions. [2024-12-02 14:51:06,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-12-02 14:51:06,386 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 7.191489361702128) internal successors, (338), 47 states have internal predecessors, (338), 0 states have call successors, (0), 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 125 [2024-12-02 14:51:06,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:51:06,499 INFO L225 Difference]: With dead ends: 178245 [2024-12-02 14:51:06,500 INFO L226 Difference]: Without dead ends: 135766 [2024-12-02 14:51:06,533 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1740 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=745, Invalid=6227, Unknown=0, NotChecked=0, Total=6972 [2024-12-02 14:51:06,533 INFO L435 NwaCegarLoop]: 530 mSDtfsCounter, 1566 mSDsluCounter, 9742 mSDsCounter, 0 mSdLazyCounter, 1996 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1566 SdHoareTripleChecker+Valid, 10272 SdHoareTripleChecker+Invalid, 2021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:51:06,533 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1566 Valid, 10272 Invalid, 2021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1996 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 14:51:06,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135766 states. [2024-12-02 14:51:07,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135766 to 126611. [2024-12-02 14:51:07,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126611 states, 126610 states have (on average 1.1913829871258195) internal successors, (150841), 126610 states have internal predecessors, (150841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:51:07,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126611 states to 126611 states and 150841 transitions. [2024-12-02 14:51:07,597 INFO L78 Accepts]: Start accepts. Automaton has 126611 states and 150841 transitions. Word has length 125 [2024-12-02 14:51:07,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:51:07,598 INFO L471 AbstractCegarLoop]: Abstraction has 126611 states and 150841 transitions. [2024-12-02 14:51:07,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 7.191489361702128) internal successors, (338), 47 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:51:07,598 INFO L276 IsEmpty]: Start isEmpty. Operand 126611 states and 150841 transitions. [2024-12-02 14:51:07,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-12-02 14:51:07,608 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:51:07,608 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:51:07,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-02 14:51:07,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-12-02 14:51:07,809 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:51:07,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:51:07,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1243189914, now seen corresponding path program 2 times [2024-12-02 14:51:07,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:51:07,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32062293] [2024-12-02 14:51:07,809 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 14:51:07,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:51:07,831 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 14:51:07,831 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 14:51:07,873 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-12-02 14:51:07,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:51:07,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32062293] [2024-12-02 14:51:07,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32062293] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:51:07,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:51:07,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:51:07,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55733761] [2024-12-02 14:51:07,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:51:07,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:51:07,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:51:07,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:51:07,874 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:51:07,874 INFO L87 Difference]: Start difference. First operand 126611 states and 150841 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:51:08,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:51:08,159 INFO L93 Difference]: Finished difference Result 173061 states and 205349 transitions. [2024-12-02 14:51:08,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:51:08,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2024-12-02 14:51:08,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:51:08,196 INFO L225 Difference]: With dead ends: 173061 [2024-12-02 14:51:08,196 INFO L226 Difference]: Without dead ends: 48295 [2024-12-02 14:51:08,232 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:51:08,232 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 41 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:51:08,233 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 205 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:51:08,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48295 states. [2024-12-02 14:51:08,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48295 to 45808. [2024-12-02 14:51:08,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45808 states, 45807 states have (on average 1.1563953107603642) internal successors, (52971), 45807 states have internal predecessors, (52971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:51:08,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45808 states to 45808 states and 52971 transitions. [2024-12-02 14:51:08,586 INFO L78 Accepts]: Start accepts. Automaton has 45808 states and 52971 transitions. Word has length 146 [2024-12-02 14:51:08,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:51:08,586 INFO L471 AbstractCegarLoop]: Abstraction has 45808 states and 52971 transitions. [2024-12-02 14:51:08,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:51:08,586 INFO L276 IsEmpty]: Start isEmpty. Operand 45808 states and 52971 transitions. [2024-12-02 14:51:08,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-12-02 14:51:08,591 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:51:08,591 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:51:08,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-12-02 14:51:08,591 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:51:08,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:51:08,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1881977751, now seen corresponding path program 1 times [2024-12-02 14:51:08,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:51:08,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554109542] [2024-12-02 14:51:08,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:51:08,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:51:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:51:08,659 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-12-02 14:51:08,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:51:08,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554109542] [2024-12-02 14:51:08,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554109542] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:51:08,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:51:08,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:51:08,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904281753] [2024-12-02 14:51:08,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:51:08,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:51:08,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:51:08,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:51:08,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:51:08,660 INFO L87 Difference]: Start difference. First operand 45808 states and 52971 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 14:51:08,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:51:08,738 INFO L93 Difference]: Finished difference Result 68329 states and 78986 transitions. [2024-12-02 14:51:08,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:51:08,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 146 [2024-12-02 14:51:08,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:51:08,757 INFO L225 Difference]: With dead ends: 68329 [2024-12-02 14:51:08,757 INFO L226 Difference]: Without dead ends: 23752 [2024-12-02 14:51:08,770 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:51:08,771 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 30 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:51:08,771 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 188 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:51:08,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23752 states. [2024-12-02 14:51:08,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23752 to 23441. [2024-12-02 14:51:08,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23441 states, 23440 states have (on average 1.1354095563139932) internal successors, (26614), 23440 states have internal predecessors, (26614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:51:08,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23441 states to 23441 states and 26614 transitions. [2024-12-02 14:51:08,934 INFO L78 Accepts]: Start accepts. Automaton has 23441 states and 26614 transitions. Word has length 146 [2024-12-02 14:51:08,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:51:08,934 INFO L471 AbstractCegarLoop]: Abstraction has 23441 states and 26614 transitions. [2024-12-02 14:51:08,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 14:51:08,934 INFO L276 IsEmpty]: Start isEmpty. Operand 23441 states and 26614 transitions. [2024-12-02 14:51:08,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-12-02 14:51:08,937 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:51:08,937 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:51:08,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-12-02 14:51:08,937 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:51:08,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:51:08,937 INFO L85 PathProgramCache]: Analyzing trace with hash 572194181, now seen corresponding path program 1 times [2024-12-02 14:51:08,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:51:08,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872313477] [2024-12-02 14:51:08,937 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:51:08,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:51:08,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:51:09,294 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 132 proven. 26 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-12-02 14:51:09,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:51:09,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872313477] [2024-12-02 14:51:09,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872313477] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:51:09,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541058633] [2024-12-02 14:51:09,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:51:09,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:51:09,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:51:09,296 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:51:09,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 14:51:09,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:51:09,438 INFO L256 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 14:51:09,440 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:51:10,143 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 139 proven. 19 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-12-02 14:51:10,143 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:51:10,596 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 132 proven. 26 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-12-02 14:51:10,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541058633] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:51:10,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:51:10,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 29 [2024-12-02 14:51:10,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258777861] [2024-12-02 14:51:10,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:51:10,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-12-02 14:51:10,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:51:10,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-12-02 14:51:10,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=679, Unknown=0, NotChecked=0, Total=812 [2024-12-02 14:51:10,597 INFO L87 Difference]: Start difference. First operand 23441 states and 26614 transitions. Second operand has 29 states, 29 states have (on average 7.137931034482759) internal successors, (207), 29 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:51:11,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:51:11,834 INFO L93 Difference]: Finished difference Result 46504 states and 53171 transitions. [2024-12-02 14:51:11,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-12-02 14:51:11,835 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 7.137931034482759) internal successors, (207), 29 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2024-12-02 14:51:11,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:51:11,863 INFO L225 Difference]: With dead ends: 46504 [2024-12-02 14:51:11,863 INFO L226 Difference]: Without dead ends: 40704 [2024-12-02 14:51:11,871 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=656, Invalid=2424, Unknown=0, NotChecked=0, Total=3080 [2024-12-02 14:51:11,872 INFO L435 NwaCegarLoop]: 198 mSDtfsCounter, 2526 mSDsluCounter, 3089 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2526 SdHoareTripleChecker+Valid, 3287 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:51:11,872 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2526 Valid, 3287 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 14:51:11,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40704 states. [2024-12-02 14:51:12,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40704 to 23117. [2024-12-02 14:51:12,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23117 states, 23116 states have (on average 1.1341927669146912) internal successors, (26218), 23116 states have internal predecessors, (26218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:51:12,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23117 states to 23117 states and 26218 transitions. [2024-12-02 14:51:12,094 INFO L78 Accepts]: Start accepts. Automaton has 23117 states and 26218 transitions. Word has length 148 [2024-12-02 14:51:12,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:51:12,094 INFO L471 AbstractCegarLoop]: Abstraction has 23117 states and 26218 transitions. [2024-12-02 14:51:12,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 7.137931034482759) internal successors, (207), 29 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:51:12,094 INFO L276 IsEmpty]: Start isEmpty. Operand 23117 states and 26218 transitions. [2024-12-02 14:51:12,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-12-02 14:51:12,096 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:51:12,097 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:51:12,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-12-02 14:51:12,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-12-02 14:51:12,297 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:51:12,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:51:12,297 INFO L85 PathProgramCache]: Analyzing trace with hash 223907263, now seen corresponding path program 1 times [2024-12-02 14:51:12,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:51:12,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608200948] [2024-12-02 14:51:12,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:51:12,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:51:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:51:12,936 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 132 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 14:51:12,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:51:12,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608200948] [2024-12-02 14:51:12,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608200948] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:51:12,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692060286] [2024-12-02 14:51:12,937 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:51:12,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:51:12,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:51:12,938 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:51:12,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 14:51:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:51:13,101 INFO L256 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-12-02 14:51:13,103 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:51:13,964 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 148 proven. 19 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-12-02 14:51:13,964 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:51:14,726 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 134 proven. 33 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-12-02 14:51:14,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692060286] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:51:14,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:51:14,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 15] total 40 [2024-12-02 14:51:14,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936141796] [2024-12-02 14:51:14,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:51:14,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-12-02 14:51:14,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:51:14,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-12-02 14:51:14,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=1266, Unknown=0, NotChecked=0, Total=1560 [2024-12-02 14:51:14,728 INFO L87 Difference]: Start difference. First operand 23117 states and 26218 transitions. Second operand has 40 states, 40 states have (on average 6.75) internal successors, (270), 40 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:51:16,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:51:16,172 INFO L93 Difference]: Finished difference Result 30825 states and 35042 transitions. [2024-12-02 14:51:16,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-12-02 14:51:16,172 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 6.75) internal successors, (270), 40 states have internal predecessors, (270), 0 states have call successors, (0), 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 148 [2024-12-02 14:51:16,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:51:16,189 INFO L225 Difference]: With dead ends: 30825 [2024-12-02 14:51:16,189 INFO L226 Difference]: Without dead ends: 26798 [2024-12-02 14:51:16,194 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=832, Invalid=2828, Unknown=0, NotChecked=0, Total=3660 [2024-12-02 14:51:16,195 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 1485 mSDsluCounter, 3101 mSDsCounter, 0 mSdLazyCounter, 1455 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 3289 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 14:51:16,195 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 3289 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1455 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 14:51:16,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26798 states. [2024-12-02 14:51:16,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26798 to 24755. [2024-12-02 14:51:16,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24755 states, 24754 states have (on average 1.1312515149066817) internal successors, (28003), 24754 states have internal predecessors, (28003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:51:16,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24755 states to 24755 states and 28003 transitions. [2024-12-02 14:51:16,375 INFO L78 Accepts]: Start accepts. Automaton has 24755 states and 28003 transitions. Word has length 148 [2024-12-02 14:51:16,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:51:16,375 INFO L471 AbstractCegarLoop]: Abstraction has 24755 states and 28003 transitions. [2024-12-02 14:51:16,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 6.75) internal successors, (270), 40 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:51:16,375 INFO L276 IsEmpty]: Start isEmpty. Operand 24755 states and 28003 transitions. [2024-12-02 14:51:16,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-12-02 14:51:16,378 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:51:16,378 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:51:16,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-12-02 14:51:16,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:51:16,578 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:51:16,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:51:16,579 INFO L85 PathProgramCache]: Analyzing trace with hash -409016323, now seen corresponding path program 1 times [2024-12-02 14:51:16,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:51:16,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733789752] [2024-12-02 14:51:16,579 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:51:16,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:51:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:51:16,950 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 130 proven. 17 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-12-02 14:51:16,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:51:16,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733789752] [2024-12-02 14:51:16,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733789752] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:51:16,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588011337] [2024-12-02 14:51:16,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:51:16,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:51:16,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:51:16,952 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:51:16,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-02 14:51:17,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:51:17,105 INFO L256 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 14:51:17,107 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:51:17,927 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 130 proven. 17 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-12-02 14:51:17,927 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:51:18,487 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 130 proven. 17 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-12-02 14:51:18,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588011337] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:51:18,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:51:18,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 29 [2024-12-02 14:51:18,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724298072] [2024-12-02 14:51:18,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:51:18,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-12-02 14:51:18,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:51:18,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-12-02 14:51:18,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=701, Unknown=0, NotChecked=0, Total=812 [2024-12-02 14:51:18,488 INFO L87 Difference]: Start difference. First operand 24755 states and 28003 transitions. Second operand has 29 states, 29 states have (on average 7.0) internal successors, (203), 29 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:51:19,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:51:19,605 INFO L93 Difference]: Finished difference Result 32200 states and 36507 transitions. [2024-12-02 14:51:19,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-12-02 14:51:19,606 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 7.0) internal successors, (203), 29 states have internal predecessors, (203), 0 states have call successors, (0), 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 148 [2024-12-02 14:51:19,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:51:19,624 INFO L225 Difference]: With dead ends: 32200 [2024-12-02 14:51:19,624 INFO L226 Difference]: Without dead ends: 28796 [2024-12-02 14:51:19,629 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=520, Invalid=1642, Unknown=0, NotChecked=0, Total=2162 [2024-12-02 14:51:19,630 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 2122 mSDsluCounter, 2253 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2122 SdHoareTripleChecker+Valid, 2429 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:51:19,630 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2122 Valid, 2429 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 14:51:19,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28796 states. [2024-12-02 14:51:19,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28796 to 26536. [2024-12-02 14:51:19,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26536 states, 26535 states have (on average 1.1325419257584322) internal successors, (30052), 26535 states have internal predecessors, (30052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:51:19,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26536 states to 26536 states and 30052 transitions. [2024-12-02 14:51:19,826 INFO L78 Accepts]: Start accepts. Automaton has 26536 states and 30052 transitions. Word has length 148 [2024-12-02 14:51:19,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:51:19,826 INFO L471 AbstractCegarLoop]: Abstraction has 26536 states and 30052 transitions. [2024-12-02 14:51:19,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 7.0) internal successors, (203), 29 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:51:19,826 INFO L276 IsEmpty]: Start isEmpty. Operand 26536 states and 30052 transitions. [2024-12-02 14:51:19,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-12-02 14:51:19,829 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:51:19,829 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 14:51:19,837 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-12-02 14:51:20,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:51:20,030 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:51:20,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:51:20,030 INFO L85 PathProgramCache]: Analyzing trace with hash -475847515, now seen corresponding path program 1 times [2024-12-02 14:51:20,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:51:20,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925887404] [2024-12-02 14:51:20,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:51:20,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:51:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:51:20,456 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 27 proven. 183 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 14:51:20,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:51:20,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925887404] [2024-12-02 14:51:20,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925887404] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:51:20,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750004850] [2024-12-02 14:51:20,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:51:20,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:51:20,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:51:20,458 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:51:20,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-02 14:51:20,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:51:20,638 INFO L256 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-12-02 14:51:20,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:51:21,139 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 136 proven. 70 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 14:51:21,140 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:51:22,075 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 136 proven. 70 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 14:51:22,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750004850] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:51:22,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:51:22,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 33 [2024-12-02 14:51:22,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407794195] [2024-12-02 14:51:22,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:51:22,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-12-02 14:51:22,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:51:22,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-12-02 14:51:22,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=999, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 14:51:22,077 INFO L87 Difference]: Start difference. First operand 26536 states and 30052 transitions. Second operand has 34 states, 34 states have (on average 9.764705882352942) internal successors, (332), 33 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:51:23,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:51:23,671 INFO L93 Difference]: Finished difference Result 34546 states and 39081 transitions. [2024-12-02 14:51:23,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-12-02 14:51:23,671 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 9.764705882352942) internal successors, (332), 33 states have internal predecessors, (332), 0 states have call successors, (0), 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 154 [2024-12-02 14:51:23,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:51:23,693 INFO L225 Difference]: With dead ends: 34546 [2024-12-02 14:51:23,693 INFO L226 Difference]: Without dead ends: 29570 [2024-12-02 14:51:23,700 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=878, Invalid=4378, Unknown=0, NotChecked=0, Total=5256 [2024-12-02 14:51:23,701 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 1359 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 1803 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1359 SdHoareTripleChecker+Valid, 1786 SdHoareTripleChecker+Invalid, 1822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 14:51:23,701 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1359 Valid, 1786 Invalid, 1822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1803 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 14:51:23,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29570 states. [2024-12-02 14:51:23,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29570 to 26833. [2024-12-02 14:51:23,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26833 states, 26832 states have (on average 1.1323792486583184) internal successors, (30384), 26832 states have internal predecessors, (30384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:51:23,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26833 states to 26833 states and 30384 transitions. [2024-12-02 14:51:23,904 INFO L78 Accepts]: Start accepts. Automaton has 26833 states and 30384 transitions. Word has length 154 [2024-12-02 14:51:23,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:51:23,905 INFO L471 AbstractCegarLoop]: Abstraction has 26833 states and 30384 transitions. [2024-12-02 14:51:23,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 9.764705882352942) internal successors, (332), 33 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:51:23,905 INFO L276 IsEmpty]: Start isEmpty. Operand 26833 states and 30384 transitions. [2024-12-02 14:51:23,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-12-02 14:51:23,909 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:51:23,909 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 14:51:23,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-12-02 14:51:24,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:51:24,109 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:51:24,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:51:24,110 INFO L85 PathProgramCache]: Analyzing trace with hash 995778851, now seen corresponding path program 1 times [2024-12-02 14:51:24,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:51:24,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876475731] [2024-12-02 14:51:24,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:51:24,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:51:24,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:51:24,159 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-12-02 14:51:24,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:51:24,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876475731] [2024-12-02 14:51:24,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876475731] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:51:24,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:51:24,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:51:24,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355289816] [2024-12-02 14:51:24,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:51:24,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:51:24,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:51:24,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:51:24,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:51:24,160 INFO L87 Difference]: Start difference. First operand 26833 states and 30384 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:51:24,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:51:24,246 INFO L93 Difference]: Finished difference Result 32667 states and 37049 transitions. [2024-12-02 14:51:24,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:51:24,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 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 154 [2024-12-02 14:51:24,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:51:24,263 INFO L225 Difference]: With dead ends: 32667 [2024-12-02 14:51:24,263 INFO L226 Difference]: Without dead ends: 26784 [2024-12-02 14:51:24,269 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:51:24,270 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 64 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:51:24,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 288 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:51:24,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26784 states. [2024-12-02 14:51:24,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26784 to 26760. [2024-12-02 14:51:24,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26760 states, 26759 states have (on average 1.1300123322994133) internal successors, (30238), 26759 states have internal predecessors, (30238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:51:24,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26760 states to 26760 states and 30238 transitions. [2024-12-02 14:51:24,487 INFO L78 Accepts]: Start accepts. Automaton has 26760 states and 30238 transitions. Word has length 154 [2024-12-02 14:51:24,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:51:24,487 INFO L471 AbstractCegarLoop]: Abstraction has 26760 states and 30238 transitions. [2024-12-02 14:51:24,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:51:24,487 INFO L276 IsEmpty]: Start isEmpty. Operand 26760 states and 30238 transitions. [2024-12-02 14:51:24,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-12-02 14:51:24,492 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:51:24,492 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 14:51:24,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-12-02 14:51:24,492 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:51:24,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:51:24,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1144638723, now seen corresponding path program 1 times [2024-12-02 14:51:24,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:51:24,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047307377] [2024-12-02 14:51:24,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:51:24,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:51:24,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:51:25,034 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 140 proven. 53 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 14:51:25,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:51:25,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047307377] [2024-12-02 14:51:25,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047307377] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:51:25,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135121191] [2024-12-02 14:51:25,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:51:25,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:51:25,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:51:25,036 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:51:25,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-12-02 14:51:25,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:51:25,210 INFO L256 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 14:51:25,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:51:26,115 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 157 proven. 36 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 14:51:26,115 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:51:26,982 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 157 proven. 36 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 14:51:26,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135121191] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:51:26,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:51:26,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 30 [2024-12-02 14:51:26,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514863195] [2024-12-02 14:51:26,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:51:26,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-12-02 14:51:26,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:51:26,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-12-02 14:51:26,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=768, Unknown=0, NotChecked=0, Total=870 [2024-12-02 14:51:26,983 INFO L87 Difference]: Start difference. First operand 26760 states and 30238 transitions. Second operand has 30 states, 30 states have (on average 10.166666666666666) internal successors, (305), 30 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:51:30,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:51:30,835 INFO L93 Difference]: Finished difference Result 44621 states and 50305 transitions. [2024-12-02 14:51:30,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-12-02 14:51:30,836 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 10.166666666666666) internal successors, (305), 30 states have internal predecessors, (305), 0 states have call successors, (0), 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 154 [2024-12-02 14:51:30,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:51:30,861 INFO L225 Difference]: With dead ends: 44621 [2024-12-02 14:51:30,861 INFO L226 Difference]: Without dead ends: 39042 [2024-12-02 14:51:30,869 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1738 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1354, Invalid=5956, Unknown=0, NotChecked=0, Total=7310 [2024-12-02 14:51:30,869 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 2120 mSDsluCounter, 1814 mSDsCounter, 0 mSdLazyCounter, 2164 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2120 SdHoareTripleChecker+Valid, 1960 SdHoareTripleChecker+Invalid, 2215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:51:30,869 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2120 Valid, 1960 Invalid, 2215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2164 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 14:51:30,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39042 states. [2024-12-02 14:51:31,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39042 to 26464. [2024-12-02 14:51:31,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26464 states, 26463 states have (on average 1.1283301213014398) internal successors, (29859), 26463 states have internal predecessors, (29859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:51:31,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26464 states to 26464 states and 29859 transitions. [2024-12-02 14:51:31,101 INFO L78 Accepts]: Start accepts. Automaton has 26464 states and 29859 transitions. Word has length 154 [2024-12-02 14:51:31,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:51:31,101 INFO L471 AbstractCegarLoop]: Abstraction has 26464 states and 29859 transitions. [2024-12-02 14:51:31,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 10.166666666666666) internal successors, (305), 30 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:51:31,101 INFO L276 IsEmpty]: Start isEmpty. Operand 26464 states and 29859 transitions. [2024-12-02 14:51:31,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-12-02 14:51:31,104 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:51:31,104 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 14:51:31,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-12-02 14:51:31,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:51:31,304 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:51:31,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:51:31,304 INFO L85 PathProgramCache]: Analyzing trace with hash 244659917, now seen corresponding path program 1 times [2024-12-02 14:51:31,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:51:31,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652798771] [2024-12-02 14:51:31,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:51:31,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:51:31,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:51:31,356 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-12-02 14:51:31,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:51:31,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652798771] [2024-12-02 14:51:31,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652798771] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:51:31,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:51:31,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:51:31,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230839180] [2024-12-02 14:51:31,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:51:31,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:51:31,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:51:31,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:51:31,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:51:31,357 INFO L87 Difference]: Start difference. First operand 26464 states and 29859 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:51:31,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:51:31,449 INFO L93 Difference]: Finished difference Result 31413 states and 35520 transitions. [2024-12-02 14:51:31,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:51:31,449 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 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 154 [2024-12-02 14:51:31,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:51:31,469 INFO L225 Difference]: With dead ends: 31413 [2024-12-02 14:51:31,469 INFO L226 Difference]: Without dead ends: 26408 [2024-12-02 14:51:31,475 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:51:31,475 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 66 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:51:31,475 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 242 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:51:31,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26408 states. [2024-12-02 14:51:31,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26408 to 26381. [2024-12-02 14:51:31,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26381 states, 26380 states have (on average 1.125587566338135) internal successors, (29693), 26380 states have internal predecessors, (29693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:51:31,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26381 states to 26381 states and 29693 transitions. [2024-12-02 14:51:31,668 INFO L78 Accepts]: Start accepts. Automaton has 26381 states and 29693 transitions. Word has length 154 [2024-12-02 14:51:31,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:51:31,668 INFO L471 AbstractCegarLoop]: Abstraction has 26381 states and 29693 transitions. [2024-12-02 14:51:31,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:51:31,668 INFO L276 IsEmpty]: Start isEmpty. Operand 26381 states and 29693 transitions. [2024-12-02 14:51:31,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-12-02 14:51:31,671 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:51:31,671 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 14:51:31,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-12-02 14:51:31,671 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:51:31,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:51:31,672 INFO L85 PathProgramCache]: Analyzing trace with hash 928109229, now seen corresponding path program 1 times [2024-12-02 14:51:31,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:51:31,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946662762] [2024-12-02 14:51:31,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:51:31,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:51:31,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:51:32,048 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 138 proven. 62 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-12-02 14:51:32,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:51:32,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946662762] [2024-12-02 14:51:32,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946662762] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:51:32,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432992797] [2024-12-02 14:51:32,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:51:32,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:51:32,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:51:32,049 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:51:32,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-12-02 14:51:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:51:32,216 INFO L256 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-12-02 14:51:32,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:51:33,457 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 148 proven. 52 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-12-02 14:51:33,457 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:51:34,139 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 164 proven. 36 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-12-02 14:51:34,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432992797] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:51:34,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:51:34,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 33 [2024-12-02 14:51:34,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523715165] [2024-12-02 14:51:34,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:51:34,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-12-02 14:51:34,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:51:34,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-12-02 14:51:34,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=942, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 14:51:34,141 INFO L87 Difference]: Start difference. First operand 26381 states and 29693 transitions. Second operand has 33 states, 33 states have (on average 9.151515151515152) internal successors, (302), 33 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:51:37,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:51:37,526 INFO L93 Difference]: Finished difference Result 31676 states and 35631 transitions. [2024-12-02 14:51:37,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-12-02 14:51:37,527 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 9.151515151515152) internal successors, (302), 33 states have internal predecessors, (302), 0 states have call successors, (0), 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 154 [2024-12-02 14:51:37,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:51:37,543 INFO L225 Difference]: With dead ends: 31676 [2024-12-02 14:51:37,543 INFO L226 Difference]: Without dead ends: 27044 [2024-12-02 14:51:37,549 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1357 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1198, Invalid=4964, Unknown=0, NotChecked=0, Total=6162 [2024-12-02 14:51:37,549 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 2134 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 1347 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2134 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 14:51:37,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2134 Valid, 1394 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1347 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 14:51:37,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27044 states. [2024-12-02 14:51:37,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27044 to 26089. [2024-12-02 14:51:37,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26089 states, 26088 states have (on average 1.124310027598896) internal successors, (29331), 26088 states have internal predecessors, (29331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:51:37,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26089 states to 26089 states and 29331 transitions. [2024-12-02 14:51:37,736 INFO L78 Accepts]: Start accepts. Automaton has 26089 states and 29331 transitions. Word has length 154 [2024-12-02 14:51:37,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:51:37,736 INFO L471 AbstractCegarLoop]: Abstraction has 26089 states and 29331 transitions. [2024-12-02 14:51:37,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 9.151515151515152) internal successors, (302), 33 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:51:37,736 INFO L276 IsEmpty]: Start isEmpty. Operand 26089 states and 29331 transitions. [2024-12-02 14:51:37,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-12-02 14:51:37,739 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:51:37,739 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 14:51:37,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-12-02 14:51:37,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:51:37,939 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:51:37,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:51:37,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1621930783, now seen corresponding path program 1 times [2024-12-02 14:51:37,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:51:37,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511337817] [2024-12-02 14:51:37,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:51:37,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:51:37,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:51:38,593 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 91 proven. 133 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 14:51:38,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:51:38,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511337817] [2024-12-02 14:51:38,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511337817] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:51:38,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529698165] [2024-12-02 14:51:38,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:51:38,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:51:38,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:51:38,595 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:51:38,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-12-02 14:51:38,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:51:38,774 INFO L256 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-12-02 14:51:38,776 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:51:41,314 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 104 proven. 120 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 14:51:41,314 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:51:43,249 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 91 proven. 133 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 14:51:43,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529698165] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:51:43,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:51:43,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 29, 21] total 58 [2024-12-02 14:51:43,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384681356] [2024-12-02 14:51:43,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:51:43,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-12-02 14:51:43,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:51:43,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-12-02 14:51:43,250 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=427, Invalid=2879, Unknown=0, NotChecked=0, Total=3306 [2024-12-02 14:51:43,250 INFO L87 Difference]: Start difference. First operand 26089 states and 29331 transitions. Second operand has 58 states, 58 states have (on average 6.086206896551724) internal successors, (353), 58 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:51:51,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:51:51,896 INFO L93 Difference]: Finished difference Result 29701 states and 33392 transitions. [2024-12-02 14:51:51,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2024-12-02 14:51:51,896 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 6.086206896551724) internal successors, (353), 58 states have internal predecessors, (353), 0 states have call successors, (0), 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 156 [2024-12-02 14:51:51,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:51:51,912 INFO L225 Difference]: With dead ends: 29701 [2024-12-02 14:51:51,912 INFO L226 Difference]: Without dead ends: 26832 [2024-12-02 14:51:51,918 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8361 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=4238, Invalid=22494, Unknown=0, NotChecked=0, Total=26732 [2024-12-02 14:51:51,918 INFO L435 NwaCegarLoop]: 330 mSDtfsCounter, 3283 mSDsluCounter, 8118 mSDsCounter, 0 mSdLazyCounter, 4182 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3283 SdHoareTripleChecker+Valid, 8448 SdHoareTripleChecker+Invalid, 4229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 4182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-12-02 14:51:51,918 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3283 Valid, 8448 Invalid, 4229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 4182 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-12-02 14:51:51,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26832 states. [2024-12-02 14:51:52,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26832 to 25346. [2024-12-02 14:51:52,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25346 states, 25345 states have (on average 1.123535214046163) internal successors, (28476), 25345 states have internal predecessors, (28476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:51:52,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25346 states to 25346 states and 28476 transitions. [2024-12-02 14:51:52,100 INFO L78 Accepts]: Start accepts. Automaton has 25346 states and 28476 transitions. Word has length 156 [2024-12-02 14:51:52,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:51:52,100 INFO L471 AbstractCegarLoop]: Abstraction has 25346 states and 28476 transitions. [2024-12-02 14:51:52,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 6.086206896551724) internal successors, (353), 58 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:51:52,100 INFO L276 IsEmpty]: Start isEmpty. Operand 25346 states and 28476 transitions. [2024-12-02 14:51:52,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-12-02 14:51:52,103 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:51:52,103 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 14:51:52,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-12-02 14:51:52,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:51:52,303 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:51:52,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:51:52,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1512115377, now seen corresponding path program 1 times [2024-12-02 14:51:52,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:51:52,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362451337] [2024-12-02 14:51:52,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:51:52,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:51:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:51:53,035 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 122 proven. 98 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 14:51:53,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:51:53,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362451337] [2024-12-02 14:51:53,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362451337] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:51:53,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639105447] [2024-12-02 14:51:53,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:51:53,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:51:53,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:51:53,037 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:51:53,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-12-02 14:51:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:51:53,226 INFO L256 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-12-02 14:51:53,228 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:51:55,115 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 122 proven. 98 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 14:51:55,115 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:51:56,499 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 122 proven. 98 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 14:51:56,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639105447] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:51:56,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:51:56,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 43 [2024-12-02 14:51:56,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164074168] [2024-12-02 14:51:56,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:51:56,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-12-02 14:51:56,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:51:56,501 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-12-02 14:51:56,501 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1648, Unknown=0, NotChecked=0, Total=1806 [2024-12-02 14:51:56,501 INFO L87 Difference]: Start difference. First operand 25346 states and 28476 transitions. Second operand has 43 states, 43 states have (on average 7.930232558139535) internal successors, (341), 43 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:52:03,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:52:03,838 INFO L93 Difference]: Finished difference Result 38283 states and 43105 transitions. [2024-12-02 14:52:03,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-12-02 14:52:03,839 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 7.930232558139535) internal successors, (341), 43 states have internal predecessors, (341), 0 states have call successors, (0), 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 156 [2024-12-02 14:52:03,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:52:03,865 INFO L225 Difference]: With dead ends: 38283 [2024-12-02 14:52:03,865 INFO L226 Difference]: Without dead ends: 35460 [2024-12-02 14:52:03,873 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3014 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=2146, Invalid=10064, Unknown=0, NotChecked=0, Total=12210 [2024-12-02 14:52:03,873 INFO L435 NwaCegarLoop]: 327 mSDtfsCounter, 2111 mSDsluCounter, 6828 mSDsCounter, 0 mSdLazyCounter, 3356 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2111 SdHoareTripleChecker+Valid, 7155 SdHoareTripleChecker+Invalid, 3387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 3356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:52:03,873 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2111 Valid, 7155 Invalid, 3387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 3356 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-12-02 14:52:03,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35460 states. [2024-12-02 14:52:04,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35460 to 25199. [2024-12-02 14:52:04,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25199 states, 25198 states have (on average 1.1235812366060798) internal successors, (28312), 25198 states have internal predecessors, (28312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:52:04,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25199 states to 25199 states and 28312 transitions. [2024-12-02 14:52:04,093 INFO L78 Accepts]: Start accepts. Automaton has 25199 states and 28312 transitions. Word has length 156 [2024-12-02 14:52:04,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:52:04,093 INFO L471 AbstractCegarLoop]: Abstraction has 25199 states and 28312 transitions. [2024-12-02 14:52:04,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 7.930232558139535) internal successors, (341), 43 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:52:04,093 INFO L276 IsEmpty]: Start isEmpty. Operand 25199 states and 28312 transitions. [2024-12-02 14:52:04,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-12-02 14:52:04,096 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:52:04,096 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 14:52:04,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-12-02 14:52:04,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:52:04,296 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:52:04,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:52:04,297 INFO L85 PathProgramCache]: Analyzing trace with hash -124387059, now seen corresponding path program 1 times [2024-12-02 14:52:04,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:52:04,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107638687] [2024-12-02 14:52:04,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:52:04,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:52:04,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:52:04,938 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 107 proven. 115 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 14:52:04,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:52:04,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107638687] [2024-12-02 14:52:04,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107638687] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:52:04,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509032311] [2024-12-02 14:52:04,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:52:04,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:52:04,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:52:04,940 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:52:04,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-12-02 14:52:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:52:05,145 INFO L256 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-12-02 14:52:05,147 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:52:07,727 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 117 proven. 105 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 14:52:07,727 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:52:11,194 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 107 proven. 115 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 14:52:11,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509032311] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:52:11,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:52:11,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 27, 25] total 64 [2024-12-02 14:52:11,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041859702] [2024-12-02 14:52:11,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:52:11,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-12-02 14:52:11,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:52:11,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-12-02 14:52:11,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=3649, Unknown=0, NotChecked=0, Total=4032 [2024-12-02 14:52:11,195 INFO L87 Difference]: Start difference. First operand 25199 states and 28312 transitions. Second operand has 64 states, 64 states have (on average 5.75) internal successors, (368), 64 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:52:35,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:52:35,393 INFO L93 Difference]: Finished difference Result 33946 states and 38050 transitions. [2024-12-02 14:52:35,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2024-12-02 14:52:35,394 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 5.75) internal successors, (368), 64 states have internal predecessors, (368), 0 states have call successors, (0), 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 156 [2024-12-02 14:52:35,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:52:35,414 INFO L225 Difference]: With dead ends: 33946 [2024-12-02 14:52:35,414 INFO L226 Difference]: Without dead ends: 30945 [2024-12-02 14:52:35,423 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 264 SyntacticMatches, 1 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26028 ImplicationChecksByTransitivity, 20.3s TimeCoverageRelationStatistics Valid=12920, Invalid=58102, Unknown=0, NotChecked=0, Total=71022 [2024-12-02 14:52:35,423 INFO L435 NwaCegarLoop]: 220 mSDtfsCounter, 9007 mSDsluCounter, 5596 mSDsCounter, 0 mSdLazyCounter, 6474 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9007 SdHoareTripleChecker+Valid, 5816 SdHoareTripleChecker+Invalid, 6693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 6474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-12-02 14:52:35,423 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9007 Valid, 5816 Invalid, 6693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 6474 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-12-02 14:52:35,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30945 states. [2024-12-02 14:52:35,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30945 to 25497. [2024-12-02 14:52:35,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25497 states, 25496 states have (on average 1.122254471289614) internal successors, (28613), 25496 states have internal predecessors, (28613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:52:35,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25497 states to 25497 states and 28613 transitions. [2024-12-02 14:52:35,612 INFO L78 Accepts]: Start accepts. Automaton has 25497 states and 28613 transitions. Word has length 156 [2024-12-02 14:52:35,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:52:35,612 INFO L471 AbstractCegarLoop]: Abstraction has 25497 states and 28613 transitions. [2024-12-02 14:52:35,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 5.75) internal successors, (368), 64 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:52:35,612 INFO L276 IsEmpty]: Start isEmpty. Operand 25497 states and 28613 transitions. [2024-12-02 14:52:35,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-12-02 14:52:35,614 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:52:35,614 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 14:52:35,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-12-02 14:52:35,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:52:35,815 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:52:35,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:52:35,815 INFO L85 PathProgramCache]: Analyzing trace with hash 350272171, now seen corresponding path program 1 times [2024-12-02 14:52:35,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:52:35,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244024606] [2024-12-02 14:52:35,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:52:35,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:52:35,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:52:36,387 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 27 proven. 202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:52:36,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:52:36,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244024606] [2024-12-02 14:52:36,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244024606] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:52:36,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830512116] [2024-12-02 14:52:36,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:52:36,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:52:36,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:52:36,389 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:52:36,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-12-02 14:52:36,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:52:36,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-12-02 14:52:36,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:52:37,795 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 102 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:52:37,795 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:52:38,642 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 149 proven. 63 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-12-02 14:52:38,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830512116] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:52:38,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:52:38,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 25, 11] total 45 [2024-12-02 14:52:38,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436702470] [2024-12-02 14:52:38,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:52:38,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-12-02 14:52:38,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:52:38,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-12-02 14:52:38,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1792, Unknown=0, NotChecked=0, Total=1980 [2024-12-02 14:52:38,644 INFO L87 Difference]: Start difference. First operand 25497 states and 28613 transitions. Second operand has 45 states, 45 states have (on average 8.6) internal successors, (387), 45 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:52:54,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:52:54,823 INFO L93 Difference]: Finished difference Result 37805 states and 42455 transitions. [2024-12-02 14:52:54,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2024-12-02 14:52:54,823 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 8.6) internal successors, (387), 45 states have internal predecessors, (387), 0 states have call successors, (0), 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 159 [2024-12-02 14:52:54,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:52:54,844 INFO L225 Difference]: With dead ends: 37805 [2024-12-02 14:52:54,844 INFO L226 Difference]: Without dead ends: 33094 [2024-12-02 14:52:54,853 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 677 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31498 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=7575, Invalid=72797, Unknown=0, NotChecked=0, Total=80372 [2024-12-02 14:52:54,854 INFO L435 NwaCegarLoop]: 228 mSDtfsCounter, 1981 mSDsluCounter, 5112 mSDsCounter, 0 mSdLazyCounter, 5534 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1981 SdHoareTripleChecker+Valid, 5340 SdHoareTripleChecker+Invalid, 5580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 5534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:52:54,854 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1981 Valid, 5340 Invalid, 5580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 5534 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-12-02 14:52:54,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33094 states. [2024-12-02 14:52:55,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33094 to 25622. [2024-12-02 14:52:55,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25622 states, 25621 states have (on average 1.118769759181921) internal successors, (28664), 25621 states have internal predecessors, (28664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:52:55,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25622 states to 25622 states and 28664 transitions. [2024-12-02 14:52:55,047 INFO L78 Accepts]: Start accepts. Automaton has 25622 states and 28664 transitions. Word has length 159 [2024-12-02 14:52:55,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:52:55,047 INFO L471 AbstractCegarLoop]: Abstraction has 25622 states and 28664 transitions. [2024-12-02 14:52:55,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 8.6) internal successors, (387), 45 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:52:55,047 INFO L276 IsEmpty]: Start isEmpty. Operand 25622 states and 28664 transitions. [2024-12-02 14:52:55,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-12-02 14:52:55,050 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:52:55,050 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 14:52:55,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-12-02 14:52:55,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:52:55,250 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:52:55,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:52:55,251 INFO L85 PathProgramCache]: Analyzing trace with hash 669115490, now seen corresponding path program 1 times [2024-12-02 14:52:55,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:52:55,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134400837] [2024-12-02 14:52:55,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:52:55,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:52:55,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:52:55,837 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 58 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:52:55,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:52:55,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134400837] [2024-12-02 14:52:55,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134400837] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:52:55,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642812665] [2024-12-02 14:52:55,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:52:55,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:52:55,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:52:55,839 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:52:55,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-12-02 14:52:56,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:52:56,058 INFO L256 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-12-02 14:52:56,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:52:57,283 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 60 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:52:57,284 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:52:59,125 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 58 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:52:59,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642812665] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:52:59,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:52:59,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21, 19] total 53 [2024-12-02 14:52:59,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186124469] [2024-12-02 14:52:59,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:52:59,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-12-02 14:52:59,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:52:59,126 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-12-02 14:52:59,126 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=2483, Unknown=0, NotChecked=0, Total=2756 [2024-12-02 14:52:59,127 INFO L87 Difference]: Start difference. First operand 25622 states and 28664 transitions. Second operand has 53 states, 53 states have (on average 8.169811320754716) internal successors, (433), 53 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:53:20,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:53:20,136 INFO L93 Difference]: Finished difference Result 29455 states and 32917 transitions. [2024-12-02 14:53:20,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2024-12-02 14:53:20,136 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 8.169811320754716) internal successors, (433), 53 states have internal predecessors, (433), 0 states have call successors, (0), 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 161 [2024-12-02 14:53:20,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:53:20,155 INFO L225 Difference]: With dead ends: 29455 [2024-12-02 14:53:20,155 INFO L226 Difference]: Without dead ends: 28613 [2024-12-02 14:53:20,164 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 286 SyntacticMatches, 2 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23961 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=9387, Invalid=54369, Unknown=0, NotChecked=0, Total=63756 [2024-12-02 14:53:20,164 INFO L435 NwaCegarLoop]: 207 mSDtfsCounter, 3820 mSDsluCounter, 5904 mSDsCounter, 0 mSdLazyCounter, 5852 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3820 SdHoareTripleChecker+Valid, 6111 SdHoareTripleChecker+Invalid, 5944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 5852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:53:20,165 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3820 Valid, 6111 Invalid, 5944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 5852 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-12-02 14:53:20,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28613 states. [2024-12-02 14:53:20,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28613 to 24782. [2024-12-02 14:53:20,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24782 states, 24781 states have (on average 1.1188410475767725) internal successors, (27726), 24781 states have internal predecessors, (27726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:53:20,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24782 states to 24782 states and 27726 transitions. [2024-12-02 14:53:20,353 INFO L78 Accepts]: Start accepts. Automaton has 24782 states and 27726 transitions. Word has length 161 [2024-12-02 14:53:20,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:53:20,353 INFO L471 AbstractCegarLoop]: Abstraction has 24782 states and 27726 transitions. [2024-12-02 14:53:20,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 8.169811320754716) internal successors, (433), 53 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:53:20,353 INFO L276 IsEmpty]: Start isEmpty. Operand 24782 states and 27726 transitions. [2024-12-02 14:53:20,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-12-02 14:53:20,355 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:53:20,355 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 14:53:20,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-12-02 14:53:20,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:53:20,556 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:53:20,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:53:20,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1590882187, now seen corresponding path program 1 times [2024-12-02 14:53:20,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:53:20,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560376930] [2024-12-02 14:53:20,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:53:20,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:53:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:53:21,204 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 43 proven. 186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:53:21,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:53:21,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560376930] [2024-12-02 14:53:21,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560376930] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:53:21,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154738462] [2024-12-02 14:53:21,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:53:21,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:53:21,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:53:21,206 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:53:21,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-12-02 14:53:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:53:21,405 INFO L256 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-12-02 14:53:21,407 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:53:22,452 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 71 proven. 158 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:53:22,452 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:53:23,702 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 43 proven. 186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:53:23,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154738462] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:53:23,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:53:23,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 18] total 48 [2024-12-02 14:53:23,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984258474] [2024-12-02 14:53:23,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:53:23,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-12-02 14:53:23,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:53:23,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-12-02 14:53:23,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=2012, Unknown=0, NotChecked=0, Total=2256 [2024-12-02 14:53:23,704 INFO L87 Difference]: Start difference. First operand 24782 states and 27726 transitions. Second operand has 48 states, 48 states have (on average 8.604166666666666) internal successors, (413), 48 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:53:26,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:53:26,754 INFO L93 Difference]: Finished difference Result 37095 states and 41634 transitions. [2024-12-02 14:53:26,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-12-02 14:53:26,755 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 8.604166666666666) internal successors, (413), 48 states have internal predecessors, (413), 0 states have call successors, (0), 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 161 [2024-12-02 14:53:26,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:53:26,774 INFO L225 Difference]: With dead ends: 37095 [2024-12-02 14:53:26,774 INFO L226 Difference]: Without dead ends: 34429 [2024-12-02 14:53:26,781 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 292 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3162 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1564, Invalid=10868, Unknown=0, NotChecked=0, Total=12432 [2024-12-02 14:53:26,781 INFO L435 NwaCegarLoop]: 236 mSDtfsCounter, 1227 mSDsluCounter, 5027 mSDsCounter, 0 mSdLazyCounter, 2070 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 5263 SdHoareTripleChecker+Invalid, 2105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:53:26,781 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1227 Valid, 5263 Invalid, 2105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 2070 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 14:53:26,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34429 states. [2024-12-02 14:53:26,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34429 to 24711. [2024-12-02 14:53:26,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24711 states, 24710 states have (on average 1.118535006070417) internal successors, (27639), 24710 states have internal predecessors, (27639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:53:27,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24711 states to 24711 states and 27639 transitions. [2024-12-02 14:53:27,059 INFO L78 Accepts]: Start accepts. Automaton has 24711 states and 27639 transitions. Word has length 161 [2024-12-02 14:53:27,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:53:27,059 INFO L471 AbstractCegarLoop]: Abstraction has 24711 states and 27639 transitions. [2024-12-02 14:53:27,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 8.604166666666666) internal successors, (413), 48 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:53:27,059 INFO L276 IsEmpty]: Start isEmpty. Operand 24711 states and 27639 transitions. [2024-12-02 14:53:27,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-12-02 14:53:27,062 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:53:27,062 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 14:53:27,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-12-02 14:53:27,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:53:27,263 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:53:27,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:53:27,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1917865665, now seen corresponding path program 1 times [2024-12-02 14:53:27,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:53:27,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391124601] [2024-12-02 14:53:27,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:53:27,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:53:27,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:53:27,971 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 27 proven. 202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:53:27,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:53:27,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391124601] [2024-12-02 14:53:27,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391124601] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:53:27,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885346230] [2024-12-02 14:53:27,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:53:27,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:53:27,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:53:27,973 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:53:27,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-12-02 14:53:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:53:28,215 INFO L256 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-12-02 14:53:28,216 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:53:30,942 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 27 proven. 202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:53:30,942 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:53:33,147 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 27 proven. 202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:53:33,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885346230] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:53:33,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:53:33,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 20] total 53 [2024-12-02 14:53:33,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826945553] [2024-12-02 14:53:33,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:53:33,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-12-02 14:53:33,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:53:33,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-12-02 14:53:33,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=2556, Unknown=0, NotChecked=0, Total=2756 [2024-12-02 14:53:33,149 INFO L87 Difference]: Start difference. First operand 24711 states and 27639 transitions. Second operand has 53 states, 53 states have (on average 8.226415094339623) internal successors, (436), 53 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:54:14,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:54:14,913 INFO L93 Difference]: Finished difference Result 28708 states and 32040 transitions. [2024-12-02 14:54:14,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2024-12-02 14:54:14,913 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 8.226415094339623) internal successors, (436), 53 states have internal predecessors, (436), 0 states have call successors, (0), 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 161 [2024-12-02 14:54:14,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:54:14,929 INFO L225 Difference]: With dead ends: 28708 [2024-12-02 14:54:14,929 INFO L226 Difference]: Without dead ends: 27668 [2024-12-02 14:54:14,936 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 287 SyntacticMatches, 1 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20666 ImplicationChecksByTransitivity, 38.4s TimeCoverageRelationStatistics Valid=9150, Invalid=52602, Unknown=0, NotChecked=0, Total=61752 [2024-12-02 14:54:14,936 INFO L435 NwaCegarLoop]: 216 mSDtfsCounter, 3349 mSDsluCounter, 5881 mSDsCounter, 0 mSdLazyCounter, 5892 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3349 SdHoareTripleChecker+Valid, 6097 SdHoareTripleChecker+Invalid, 5975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 5892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-12-02 14:54:14,936 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3349 Valid, 6097 Invalid, 5975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 5892 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-12-02 14:54:14,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27668 states. [2024-12-02 14:54:15,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27668 to 23760. [2024-12-02 14:54:15,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23760 states, 23759 states have (on average 1.1189444000168358) internal successors, (26585), 23759 states have internal predecessors, (26585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:54:15,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23760 states to 23760 states and 26585 transitions. [2024-12-02 14:54:15,096 INFO L78 Accepts]: Start accepts. Automaton has 23760 states and 26585 transitions. Word has length 161 [2024-12-02 14:54:15,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:54:15,096 INFO L471 AbstractCegarLoop]: Abstraction has 23760 states and 26585 transitions. [2024-12-02 14:54:15,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 8.226415094339623) internal successors, (436), 53 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:54:15,097 INFO L276 IsEmpty]: Start isEmpty. Operand 23760 states and 26585 transitions. [2024-12-02 14:54:15,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-12-02 14:54:15,099 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:54:15,099 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:54:15,106 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-12-02 14:54:15,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2024-12-02 14:54:15,300 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:54:15,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:54:15,300 INFO L85 PathProgramCache]: Analyzing trace with hash -235838712, now seen corresponding path program 1 times [2024-12-02 14:54:15,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:54:15,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160524213] [2024-12-02 14:54:15,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:15,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:54:15,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:15,403 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-12-02 14:54:15,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:54:15,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160524213] [2024-12-02 14:54:15,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160524213] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:54:15,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:54:15,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:54:15,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469696688] [2024-12-02 14:54:15,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:54:15,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:54:15,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:54:15,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:54:15,405 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:54:15,405 INFO L87 Difference]: Start difference. First operand 23760 states and 26585 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:54:15,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:54:15,475 INFO L93 Difference]: Finished difference Result 31296 states and 35116 transitions. [2024-12-02 14:54:15,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:54:15,475 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2024-12-02 14:54:15,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:54:15,489 INFO L225 Difference]: With dead ends: 31296 [2024-12-02 14:54:15,489 INFO L226 Difference]: Without dead ends: 24146 [2024-12-02 14:54:15,495 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:54:15,495 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 249 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:54:15,495 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 431 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:54:15,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24146 states. [2024-12-02 14:54:15,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24146 to 23476. [2024-12-02 14:54:15,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23476 states, 23475 states have (on average 1.1124600638977635) internal successors, (26115), 23475 states have internal predecessors, (26115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:54:15,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23476 states to 23476 states and 26115 transitions. [2024-12-02 14:54:15,649 INFO L78 Accepts]: Start accepts. Automaton has 23476 states and 26115 transitions. Word has length 162 [2024-12-02 14:54:15,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:54:15,649 INFO L471 AbstractCegarLoop]: Abstraction has 23476 states and 26115 transitions. [2024-12-02 14:54:15,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:54:15,649 INFO L276 IsEmpty]: Start isEmpty. Operand 23476 states and 26115 transitions. [2024-12-02 14:54:15,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-12-02 14:54:15,651 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:54:15,651 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:54:15,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-12-02 14:54:15,651 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:54:15,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:54:15,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1924782454, now seen corresponding path program 1 times [2024-12-02 14:54:15,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:54:15,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493450157] [2024-12-02 14:54:15,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:15,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:54:15,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:16,376 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 58 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:54:16,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:54:16,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493450157] [2024-12-02 14:54:16,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493450157] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:54:16,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433348434] [2024-12-02 14:54:16,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:16,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:54:16,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:54:16,378 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:54:16,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-12-02 14:54:16,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:16,586 INFO L256 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-12-02 14:54:16,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:54:18,158 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 65 proven. 164 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:54:18,158 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:54:21,159 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 58 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:54:21,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433348434] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:54:21,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:54:21,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 22] total 62 [2024-12-02 14:54:21,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370981680] [2024-12-02 14:54:21,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:54:21,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-12-02 14:54:21,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:54:21,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-12-02 14:54:21,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=3444, Unknown=0, NotChecked=0, Total=3782 [2024-12-02 14:54:21,160 INFO L87 Difference]: Start difference. First operand 23476 states and 26115 transitions. Second operand has 62 states, 62 states have (on average 7.193548387096774) internal successors, (446), 62 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:54:50,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:54:50,426 INFO L93 Difference]: Finished difference Result 29576 states and 32872 transitions. [2024-12-02 14:54:50,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2024-12-02 14:54:50,427 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 7.193548387096774) internal successors, (446), 62 states have internal predecessors, (446), 0 states have call successors, (0), 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 162 [2024-12-02 14:54:50,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:54:50,444 INFO L225 Difference]: With dead ends: 29576 [2024-12-02 14:54:50,444 INFO L226 Difference]: Without dead ends: 26099 [2024-12-02 14:54:50,451 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 281 SyntacticMatches, 1 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18323 ImplicationChecksByTransitivity, 27.1s TimeCoverageRelationStatistics Valid=7214, Invalid=44542, Unknown=0, NotChecked=0, Total=51756 [2024-12-02 14:54:50,451 INFO L435 NwaCegarLoop]: 208 mSDtfsCounter, 2968 mSDsluCounter, 5319 mSDsCounter, 0 mSdLazyCounter, 5109 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2968 SdHoareTripleChecker+Valid, 5527 SdHoareTripleChecker+Invalid, 5189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 5109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-12-02 14:54:50,451 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2968 Valid, 5527 Invalid, 5189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 5109 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-12-02 14:54:50,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26099 states. [2024-12-02 14:54:50,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26099 to 23229. [2024-12-02 14:54:50,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23229 states, 23228 states have (on average 1.112579645255726) internal successors, (25843), 23228 states have internal predecessors, (25843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:54:50,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23229 states to 23229 states and 25843 transitions. [2024-12-02 14:54:50,599 INFO L78 Accepts]: Start accepts. Automaton has 23229 states and 25843 transitions. Word has length 162 [2024-12-02 14:54:50,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:54:50,599 INFO L471 AbstractCegarLoop]: Abstraction has 23229 states and 25843 transitions. [2024-12-02 14:54:50,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 7.193548387096774) internal successors, (446), 62 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:54:50,599 INFO L276 IsEmpty]: Start isEmpty. Operand 23229 states and 25843 transitions. [2024-12-02 14:54:50,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-12-02 14:54:50,601 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:54:50,602 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:54:50,608 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-12-02 14:54:50,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2024-12-02 14:54:50,802 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:54:50,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:54:50,802 INFO L85 PathProgramCache]: Analyzing trace with hash -2104170615, now seen corresponding path program 1 times [2024-12-02 14:54:50,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:54:50,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24150218] [2024-12-02 14:54:50,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:50,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:54:50,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:50,904 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-12-02 14:54:50,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:54:50,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24150218] [2024-12-02 14:54:50,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24150218] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:54:50,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:54:50,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:54:50,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146703754] [2024-12-02 14:54:50,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:54:50,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:54:50,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:54:50,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:54:50,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:54:50,905 INFO L87 Difference]: Start difference. First operand 23229 states and 25843 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:54:50,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:54:50,969 INFO L93 Difference]: Finished difference Result 30211 states and 33751 transitions. [2024-12-02 14:54:50,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:54:50,970 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2024-12-02 14:54:50,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:54:50,982 INFO L225 Difference]: With dead ends: 30211 [2024-12-02 14:54:50,982 INFO L226 Difference]: Without dead ends: 22443 [2024-12-02 14:54:50,988 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:54:50,988 INFO L435 NwaCegarLoop]: 171 mSDtfsCounter, 250 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:54:50,988 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 454 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:54:50,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22443 states. [2024-12-02 14:54:51,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22443 to 21817. [2024-12-02 14:54:51,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21817 states, 21816 states have (on average 1.1064814814814814) internal successors, (24139), 21816 states have internal predecessors, (24139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:54:51,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21817 states to 21817 states and 24139 transitions. [2024-12-02 14:54:51,131 INFO L78 Accepts]: Start accepts. Automaton has 21817 states and 24139 transitions. Word has length 162 [2024-12-02 14:54:51,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:54:51,132 INFO L471 AbstractCegarLoop]: Abstraction has 21817 states and 24139 transitions. [2024-12-02 14:54:51,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:54:51,132 INFO L276 IsEmpty]: Start isEmpty. Operand 21817 states and 24139 transitions. [2024-12-02 14:54:51,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-12-02 14:54:51,134 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:54:51,134 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:54:51,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-12-02 14:54:51,134 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:54:51,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:54:51,134 INFO L85 PathProgramCache]: Analyzing trace with hash -435866445, now seen corresponding path program 1 times [2024-12-02 14:54:51,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:54:51,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030281751] [2024-12-02 14:54:51,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:51,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:54:51,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:51,236 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2024-12-02 14:54:51,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:54:51,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030281751] [2024-12-02 14:54:51,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030281751] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:54:51,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:54:51,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:54:51,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548592512] [2024-12-02 14:54:51,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:54:51,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:54:51,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:54:51,237 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:54:51,237 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:54:51,237 INFO L87 Difference]: Start difference. First operand 21817 states and 24139 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:54:51,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:54:51,300 INFO L93 Difference]: Finished difference Result 27024 states and 30052 transitions. [2024-12-02 14:54:51,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:54:51,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2024-12-02 14:54:51,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:54:51,312 INFO L225 Difference]: With dead ends: 27024 [2024-12-02 14:54:51,312 INFO L226 Difference]: Without dead ends: 21852 [2024-12-02 14:54:51,317 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:54:51,317 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 264 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:54:51,317 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 459 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:54:51,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21852 states. [2024-12-02 14:54:51,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21852 to 21470. [2024-12-02 14:54:51,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21470 states, 21469 states have (on average 1.1023801760678187) internal successors, (23667), 21469 states have internal predecessors, (23667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:54:51,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21470 states to 21470 states and 23667 transitions. [2024-12-02 14:54:51,446 INFO L78 Accepts]: Start accepts. Automaton has 21470 states and 23667 transitions. Word has length 162 [2024-12-02 14:54:51,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:54:51,446 INFO L471 AbstractCegarLoop]: Abstraction has 21470 states and 23667 transitions. [2024-12-02 14:54:51,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:54:51,446 INFO L276 IsEmpty]: Start isEmpty. Operand 21470 states and 23667 transitions. [2024-12-02 14:54:51,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-12-02 14:54:51,448 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:54:51,448 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:54:51,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-12-02 14:54:51,448 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:54:51,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:54:51,448 INFO L85 PathProgramCache]: Analyzing trace with hash 2082768331, now seen corresponding path program 1 times [2024-12-02 14:54:51,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:54:51,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217643545] [2024-12-02 14:54:51,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:51,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:54:51,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:52,172 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 27 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:54:52,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:54:52,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217643545] [2024-12-02 14:54:52,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217643545] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:54:52,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875573408] [2024-12-02 14:54:52,172 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:52,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:54:52,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:54:52,173 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:54:52,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-12-02 14:54:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:52,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 14:54:52,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:54:53,429 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 72 proven. 144 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-12-02 14:54:53,429 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:54:55,366 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 27 proven. 189 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-12-02 14:54:55,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875573408] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:54:55,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:54:55,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 11] total 34 [2024-12-02 14:54:55,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934509921] [2024-12-02 14:54:55,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:54:55,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-12-02 14:54:55,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:54:55,367 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-12-02 14:54:55,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1070, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 14:54:55,368 INFO L87 Difference]: Start difference. First operand 21470 states and 23667 transitions. Second operand has 35 states, 35 states have (on average 12.057142857142857) internal successors, (422), 34 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:55:02,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:55:02,234 INFO L93 Difference]: Finished difference Result 42186 states and 46785 transitions. [2024-12-02 14:55:02,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-12-02 14:55:02,234 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 12.057142857142857) internal successors, (422), 34 states have internal predecessors, (422), 0 states have call successors, (0), 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 163 [2024-12-02 14:55:02,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:55:02,254 INFO L225 Difference]: With dead ends: 42186 [2024-12-02 14:55:02,254 INFO L226 Difference]: Without dead ends: 33757 [2024-12-02 14:55:02,261 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 309 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3752 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=2216, Invalid=12304, Unknown=0, NotChecked=0, Total=14520 [2024-12-02 14:55:02,261 INFO L435 NwaCegarLoop]: 287 mSDtfsCounter, 1402 mSDsluCounter, 4242 mSDsCounter, 0 mSdLazyCounter, 4396 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1402 SdHoareTripleChecker+Valid, 4529 SdHoareTripleChecker+Invalid, 4429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 4396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:55:02,261 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1402 Valid, 4529 Invalid, 4429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 4396 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-02 14:55:02,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33757 states. [2024-12-02 14:55:02,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33757 to 17440. [2024-12-02 14:55:02,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17440 states, 17439 states have (on average 1.0978267102471473) internal successors, (19145), 17439 states have internal predecessors, (19145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:55:02,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17440 states to 17440 states and 19145 transitions. [2024-12-02 14:55:02,427 INFO L78 Accepts]: Start accepts. Automaton has 17440 states and 19145 transitions. Word has length 163 [2024-12-02 14:55:02,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:55:02,427 INFO L471 AbstractCegarLoop]: Abstraction has 17440 states and 19145 transitions. [2024-12-02 14:55:02,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 12.057142857142857) internal successors, (422), 34 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:55:02,427 INFO L276 IsEmpty]: Start isEmpty. Operand 17440 states and 19145 transitions. [2024-12-02 14:55:02,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-12-02 14:55:02,429 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:55:02,429 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:55:02,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-12-02 14:55:02,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-12-02 14:55:02,629 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:55:02,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:55:02,630 INFO L85 PathProgramCache]: Analyzing trace with hash -2060155773, now seen corresponding path program 1 times [2024-12-02 14:55:02,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:55:02,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293226424] [2024-12-02 14:55:02,630 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:55:02,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:55:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:55:03,231 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 145 proven. 55 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-12-02 14:55:03,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:55:03,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293226424] [2024-12-02 14:55:03,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293226424] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:55:03,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625276538] [2024-12-02 14:55:03,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:55:03,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:55:03,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:55:03,233 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:55:03,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-12-02 14:55:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:55:03,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-12-02 14:55:03,442 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:55:06,378 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 96 proven. 136 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 14:55:06,378 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:55:08,119 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 94 proven. 138 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 14:55:08,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625276538] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:55:08,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:55:08,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 18] total 53 [2024-12-02 14:55:08,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876440632] [2024-12-02 14:55:08,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:55:08,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-12-02 14:55:08,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:55:08,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-12-02 14:55:08,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=2569, Unknown=0, NotChecked=0, Total=2756 [2024-12-02 14:55:08,121 INFO L87 Difference]: Start difference. First operand 17440 states and 19145 transitions. Second operand has 53 states, 53 states have (on average 7.735849056603773) internal successors, (410), 53 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:55:40,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:55:40,047 INFO L93 Difference]: Finished difference Result 32895 states and 36236 transitions. [2024-12-02 14:55:40,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 240 states. [2024-12-02 14:55:40,048 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 7.735849056603773) internal successors, (410), 53 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2024-12-02 14:55:40,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:55:40,067 INFO L225 Difference]: With dead ends: 32895 [2024-12-02 14:55:40,067 INFO L226 Difference]: Without dead ends: 28380 [2024-12-02 14:55:40,074 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 287 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27542 ImplicationChecksByTransitivity, 26.1s TimeCoverageRelationStatistics Valid=8696, Invalid=74536, Unknown=0, NotChecked=0, Total=83232 [2024-12-02 14:55:40,074 INFO L435 NwaCegarLoop]: 535 mSDtfsCounter, 2674 mSDsluCounter, 16898 mSDsCounter, 0 mSdLazyCounter, 10816 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2674 SdHoareTripleChecker+Valid, 17433 SdHoareTripleChecker+Invalid, 10859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 10816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2024-12-02 14:55:40,074 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2674 Valid, 17433 Invalid, 10859 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [43 Valid, 10816 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2024-12-02 14:55:40,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28380 states. [2024-12-02 14:55:40,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28380 to 17918. [2024-12-02 14:55:40,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17918 states, 17917 states have (on average 1.094044761957917) internal successors, (19602), 17917 states have internal predecessors, (19602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:55:40,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17918 states to 17918 states and 19602 transitions. [2024-12-02 14:55:40,235 INFO L78 Accepts]: Start accepts. Automaton has 17918 states and 19602 transitions. Word has length 165 [2024-12-02 14:55:40,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:55:40,235 INFO L471 AbstractCegarLoop]: Abstraction has 17918 states and 19602 transitions. [2024-12-02 14:55:40,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 7.735849056603773) internal successors, (410), 53 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:55:40,235 INFO L276 IsEmpty]: Start isEmpty. Operand 17918 states and 19602 transitions. [2024-12-02 14:55:40,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-12-02 14:55:40,237 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:55:40,237 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:55:40,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-12-02 14:55:40,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-12-02 14:55:40,438 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:55:40,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:55:40,438 INFO L85 PathProgramCache]: Analyzing trace with hash 399364577, now seen corresponding path program 1 times [2024-12-02 14:55:40,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:55:40,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727398702] [2024-12-02 14:55:40,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:55:40,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:55:40,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:55:41,287 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 141 proven. 74 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 14:55:41,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:55:41,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727398702] [2024-12-02 14:55:41,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727398702] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:55:41,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622246952] [2024-12-02 14:55:41,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:55:41,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:55:41,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:55:41,289 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:55:41,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-12-02 14:55:41,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:55:41,491 INFO L256 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-12-02 14:55:41,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:55:44,241 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 130 proven. 98 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 14:55:44,241 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:55:46,370 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 126 proven. 102 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 14:55:46,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622246952] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:55:46,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:55:46,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21, 18] total 59 [2024-12-02 14:55:46,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721389639] [2024-12-02 14:55:46,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:55:46,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-12-02 14:55:46,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:55:46,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-12-02 14:55:46,372 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=3184, Unknown=0, NotChecked=0, Total=3422 [2024-12-02 14:55:46,372 INFO L87 Difference]: Start difference. First operand 17918 states and 19602 transitions. Second operand has 59 states, 59 states have (on average 6.661016949152542) internal successors, (393), 59 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:56:14,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:56:14,454 INFO L93 Difference]: Finished difference Result 37447 states and 41151 transitions. [2024-12-02 14:56:14,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2024-12-02 14:56:14,455 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 6.661016949152542) internal successors, (393), 59 states have internal predecessors, (393), 0 states have call successors, (0), 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 165 [2024-12-02 14:56:14,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:56:14,471 INFO L225 Difference]: With dead ends: 37447 [2024-12-02 14:56:14,471 INFO L226 Difference]: Without dead ends: 29348 [2024-12-02 14:56:14,478 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16482 ImplicationChecksByTransitivity, 23.6s TimeCoverageRelationStatistics Valid=7416, Invalid=50424, Unknown=0, NotChecked=0, Total=57840 [2024-12-02 14:56:14,478 INFO L435 NwaCegarLoop]: 505 mSDtfsCounter, 3218 mSDsluCounter, 17119 mSDsCounter, 0 mSdLazyCounter, 9521 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3218 SdHoareTripleChecker+Valid, 17624 SdHoareTripleChecker+Invalid, 9591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 9521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:56:14,479 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3218 Valid, 17624 Invalid, 9591 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 9521 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2024-12-02 14:56:14,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29348 states. [2024-12-02 14:56:14,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29348 to 18858. [2024-12-02 14:56:14,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18858 states, 18857 states have (on average 1.0919552420851673) internal successors, (20591), 18857 states have internal predecessors, (20591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:56:14,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18858 states to 18858 states and 20591 transitions. [2024-12-02 14:56:14,621 INFO L78 Accepts]: Start accepts. Automaton has 18858 states and 20591 transitions. Word has length 165 [2024-12-02 14:56:14,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:56:14,621 INFO L471 AbstractCegarLoop]: Abstraction has 18858 states and 20591 transitions. [2024-12-02 14:56:14,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 6.661016949152542) internal successors, (393), 59 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:56:14,621 INFO L276 IsEmpty]: Start isEmpty. Operand 18858 states and 20591 transitions. [2024-12-02 14:56:14,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-12-02 14:56:14,623 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:56:14,623 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:56:14,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-12-02 14:56:14,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:56:14,823 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:56:14,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:56:14,823 INFO L85 PathProgramCache]: Analyzing trace with hash -193484875, now seen corresponding path program 1 times [2024-12-02 14:56:14,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:56:14,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961843606] [2024-12-02 14:56:14,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:56:14,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:56:14,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:56:15,708 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 110 proven. 120 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 14:56:15,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:56:15,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961843606] [2024-12-02 14:56:15,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961843606] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:56:15,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871210922] [2024-12-02 14:56:15,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:56:15,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:56:15,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:56:15,710 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:56:15,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-12-02 14:56:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:56:15,931 INFO L256 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-12-02 14:56:15,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:56:19,694 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 110 proven. 120 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 14:56:19,695 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:56:21,575 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 110 proven. 120 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 14:56:21,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871210922] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:56:21,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:56:21,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 19] total 48 [2024-12-02 14:56:21,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745211576] [2024-12-02 14:56:21,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:56:21,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-12-02 14:56:21,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:56:21,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-12-02 14:56:21,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=2042, Unknown=0, NotChecked=0, Total=2256 [2024-12-02 14:56:21,577 INFO L87 Difference]: Start difference. First operand 18858 states and 20591 transitions. Second operand has 48 states, 48 states have (on average 7.5) internal successors, (360), 48 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:56:36,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:56:36,416 INFO L93 Difference]: Finished difference Result 28548 states and 31299 transitions. [2024-12-02 14:56:36,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-12-02 14:56:36,416 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 7.5) internal successors, (360), 48 states have internal predecessors, (360), 0 states have call successors, (0), 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 166 [2024-12-02 14:56:36,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:56:36,428 INFO L225 Difference]: With dead ends: 28548 [2024-12-02 14:56:36,428 INFO L226 Difference]: Without dead ends: 22693 [2024-12-02 14:56:36,431 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3950 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=3042, Invalid=14250, Unknown=0, NotChecked=0, Total=17292 [2024-12-02 14:56:36,431 INFO L435 NwaCegarLoop]: 393 mSDtfsCounter, 2222 mSDsluCounter, 7784 mSDsCounter, 0 mSdLazyCounter, 4134 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2222 SdHoareTripleChecker+Valid, 8177 SdHoareTripleChecker+Invalid, 4176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 4134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:56:36,431 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2222 Valid, 8177 Invalid, 4176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 4134 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-12-02 14:56:36,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22693 states. [2024-12-02 14:56:36,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22693 to 18806. [2024-12-02 14:56:36,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18806 states, 18805 states have (on average 1.0905610210050518) internal successors, (20508), 18805 states have internal predecessors, (20508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:56:36,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18806 states to 18806 states and 20508 transitions. [2024-12-02 14:56:36,554 INFO L78 Accepts]: Start accepts. Automaton has 18806 states and 20508 transitions. Word has length 166 [2024-12-02 14:56:36,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:56:36,555 INFO L471 AbstractCegarLoop]: Abstraction has 18806 states and 20508 transitions. [2024-12-02 14:56:36,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 7.5) internal successors, (360), 48 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:56:36,555 INFO L276 IsEmpty]: Start isEmpty. Operand 18806 states and 20508 transitions. [2024-12-02 14:56:36,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-12-02 14:56:36,557 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:56:36,557 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:56:36,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-12-02 14:56:36,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:56:36,758 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:56:36,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:56:36,760 INFO L85 PathProgramCache]: Analyzing trace with hash -2028283774, now seen corresponding path program 1 times [2024-12-02 14:56:36,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:56:36,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396653203] [2024-12-02 14:56:36,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:56:36,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:56:36,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:56:36,837 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-12-02 14:56:36,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:56:36,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396653203] [2024-12-02 14:56:36,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396653203] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:56:36,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298226336] [2024-12-02 14:56:36,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:56:36,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:56:36,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:56:36,839 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:56:36,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-12-02 14:56:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:56:37,051 INFO L256 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 14:56:37,052 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:56:37,081 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-12-02 14:56:37,082 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:56:37,109 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-12-02 14:56:37,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298226336] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:56:37,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:56:37,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-12-02 14:56:37,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167861711] [2024-12-02 14:56:37,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:56:37,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:56:37,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:56:37,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:56:37,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:56:37,110 INFO L87 Difference]: Start difference. First operand 18806 states and 20508 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:56:37,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:56:37,175 INFO L93 Difference]: Finished difference Result 18810 states and 20510 transitions. [2024-12-02 14:56:37,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 14:56:37,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 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 168 [2024-12-02 14:56:37,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:56:37,186 INFO L225 Difference]: With dead ends: 18810 [2024-12-02 14:56:37,186 INFO L226 Difference]: Without dead ends: 18335 [2024-12-02 14:56:37,189 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:56:37,189 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 151 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:56:37,189 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 200 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:56:37,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18335 states. [2024-12-02 14:56:37,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18335 to 18333. [2024-12-02 14:56:37,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18333 states, 18332 states have (on average 1.0905520401483744) internal successors, (19992), 18332 states have internal predecessors, (19992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:56:37,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18333 states to 18333 states and 19992 transitions. [2024-12-02 14:56:37,334 INFO L78 Accepts]: Start accepts. Automaton has 18333 states and 19992 transitions. Word has length 168 [2024-12-02 14:56:37,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:56:37,334 INFO L471 AbstractCegarLoop]: Abstraction has 18333 states and 19992 transitions. [2024-12-02 14:56:37,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:56:37,334 INFO L276 IsEmpty]: Start isEmpty. Operand 18333 states and 19992 transitions. [2024-12-02 14:56:37,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-12-02 14:56:37,337 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:56:37,337 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 14:56:37,344 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-12-02 14:56:37,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:56:37,538 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:56:37,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:56:37,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1586225040, now seen corresponding path program 1 times [2024-12-02 14:56:37,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:56:37,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375507408] [2024-12-02 14:56:37,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:56:37,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:56:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:56:38,527 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 61 proven. 181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:56:38,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:56:38,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375507408] [2024-12-02 14:56:38,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375507408] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:56:38,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038432247] [2024-12-02 14:56:38,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:56:38,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:56:38,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:56:38,529 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:56:38,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-12-02 14:56:38,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:56:38,780 INFO L256 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-12-02 14:56:38,782 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:56:41,124 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 68 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:56:41,124 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:56:43,769 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 61 proven. 181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:56:43,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038432247] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:56:43,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:56:43,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24, 24] total 63 [2024-12-02 14:56:43,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486400908] [2024-12-02 14:56:43,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:56:43,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-12-02 14:56:43,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:56:43,770 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-12-02 14:56:43,770 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=3561, Unknown=0, NotChecked=0, Total=3906 [2024-12-02 14:56:43,770 INFO L87 Difference]: Start difference. First operand 18333 states and 19992 transitions. Second operand has 63 states, 63 states have (on average 7.174603174603175) internal successors, (452), 63 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:57:01,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:57:01,098 INFO L93 Difference]: Finished difference Result 27043 states and 29597 transitions. [2024-12-02 14:57:01,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2024-12-02 14:57:01,099 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 7.174603174603175) internal successors, (452), 63 states have internal predecessors, (452), 0 states have call successors, (0), 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 171 [2024-12-02 14:57:01,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:57:01,110 INFO L225 Difference]: With dead ends: 27043 [2024-12-02 14:57:01,110 INFO L226 Difference]: Without dead ends: 21600 [2024-12-02 14:57:01,115 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 301 SyntacticMatches, 1 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14634 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=5383, Invalid=40627, Unknown=0, NotChecked=0, Total=46010 [2024-12-02 14:57:01,116 INFO L435 NwaCegarLoop]: 255 mSDtfsCounter, 1664 mSDsluCounter, 9277 mSDsCounter, 0 mSdLazyCounter, 5712 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1664 SdHoareTripleChecker+Valid, 9532 SdHoareTripleChecker+Invalid, 5771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 5712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-12-02 14:57:01,116 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1664 Valid, 9532 Invalid, 5771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 5712 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-12-02 14:57:01,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21600 states. [2024-12-02 14:57:01,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21600 to 16632. [2024-12-02 14:57:01,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16632 states, 16631 states have (on average 1.0916962299320545) internal successors, (18156), 16631 states have internal predecessors, (18156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:57:01,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16632 states to 16632 states and 18156 transitions. [2024-12-02 14:57:01,227 INFO L78 Accepts]: Start accepts. Automaton has 16632 states and 18156 transitions. Word has length 171 [2024-12-02 14:57:01,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:57:01,227 INFO L471 AbstractCegarLoop]: Abstraction has 16632 states and 18156 transitions. [2024-12-02 14:57:01,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 7.174603174603175) internal successors, (452), 63 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:57:01,228 INFO L276 IsEmpty]: Start isEmpty. Operand 16632 states and 18156 transitions. [2024-12-02 14:57:01,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-12-02 14:57:01,230 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:57:01,230 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 14:57:01,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-12-02 14:57:01,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:57:01,430 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:57:01,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:57:01,431 INFO L85 PathProgramCache]: Analyzing trace with hash 520155363, now seen corresponding path program 1 times [2024-12-02 14:57:01,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:57:01,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338841758] [2024-12-02 14:57:01,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:57:01,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:57:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:57:02,098 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 27 proven. 215 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:57:02,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:57:02,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338841758] [2024-12-02 14:57:02,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338841758] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:57:02,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301950830] [2024-12-02 14:57:02,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:57:02,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:57:02,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:57:02,099 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:57:02,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-12-02 14:57:02,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:57:02,326 INFO L256 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-12-02 14:57:02,328 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:57:04,688 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 29 proven. 213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:57:04,688 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:57:07,356 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 27 proven. 215 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:57:07,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301950830] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:57:07,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:57:07,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22, 20] total 55 [2024-12-02 14:57:07,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971191588] [2024-12-02 14:57:07,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:57:07,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-12-02 14:57:07,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:57:07,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-12-02 14:57:07,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=2689, Unknown=0, NotChecked=0, Total=2970 [2024-12-02 14:57:07,357 INFO L87 Difference]: Start difference. First operand 16632 states and 18156 transitions. Second operand has 55 states, 55 states have (on average 8.4) internal successors, (462), 55 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:57:22,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:57:22,175 INFO L93 Difference]: Finished difference Result 21788 states and 23864 transitions. [2024-12-02 14:57:22,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2024-12-02 14:57:22,176 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 8.4) internal successors, (462), 55 states have internal predecessors, (462), 0 states have call successors, (0), 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 171 [2024-12-02 14:57:22,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:57:22,184 INFO L225 Difference]: With dead ends: 21788 [2024-12-02 14:57:22,184 INFO L226 Difference]: Without dead ends: 18847 [2024-12-02 14:57:22,188 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 305 SyntacticMatches, 1 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11056 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=6816, Invalid=28716, Unknown=0, NotChecked=0, Total=35532 [2024-12-02 14:57:22,188 INFO L435 NwaCegarLoop]: 201 mSDtfsCounter, 2734 mSDsluCounter, 4274 mSDsCounter, 0 mSdLazyCounter, 3938 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2734 SdHoareTripleChecker+Valid, 4475 SdHoareTripleChecker+Invalid, 4000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 3938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:57:22,188 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2734 Valid, 4475 Invalid, 4000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 3938 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-12-02 14:57:22,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18847 states. [2024-12-02 14:57:22,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18847 to 15162. [2024-12-02 14:57:22,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15162 states, 15161 states have (on average 1.0923421937866895) internal successors, (16561), 15161 states have internal predecessors, (16561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:57:22,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15162 states to 15162 states and 16561 transitions. [2024-12-02 14:57:22,284 INFO L78 Accepts]: Start accepts. Automaton has 15162 states and 16561 transitions. Word has length 171 [2024-12-02 14:57:22,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:57:22,284 INFO L471 AbstractCegarLoop]: Abstraction has 15162 states and 16561 transitions. [2024-12-02 14:57:22,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 8.4) internal successors, (462), 55 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:57:22,284 INFO L276 IsEmpty]: Start isEmpty. Operand 15162 states and 16561 transitions. [2024-12-02 14:57:22,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-12-02 14:57:22,286 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:57:22,286 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:57:22,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-12-02 14:57:22,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:57:22,487 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:57:22,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:57:22,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1912249605, now seen corresponding path program 1 times [2024-12-02 14:57:22,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:57:22,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007754434] [2024-12-02 14:57:22,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:57:22,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:57:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:57:23,139 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 27 proven. 215 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:57:23,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:57:23,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007754434] [2024-12-02 14:57:23,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007754434] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:57:23,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270037132] [2024-12-02 14:57:23,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:57:23,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:57:23,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:57:23,141 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:57:23,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-12-02 14:57:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:57:23,368 INFO L256 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-02 14:57:23,370 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:57:24,229 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 164 proven. 56 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 14:57:24,230 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:57:24,968 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 173 proven. 47 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 14:57:24,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270037132] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:57:24,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:57:24,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13, 12] total 38 [2024-12-02 14:57:24,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972052868] [2024-12-02 14:57:24,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:57:24,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-12-02 14:57:24,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:57:24,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-12-02 14:57:24,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1275, Unknown=0, NotChecked=0, Total=1406 [2024-12-02 14:57:24,970 INFO L87 Difference]: Start difference. First operand 15162 states and 16561 transitions. Second operand has 38 states, 38 states have (on average 10.263157894736842) internal successors, (390), 38 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:57:34,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:57:34,008 INFO L93 Difference]: Finished difference Result 32540 states and 35823 transitions. [2024-12-02 14:57:34,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2024-12-02 14:57:34,008 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 10.263157894736842) internal successors, (390), 38 states have internal predecessors, (390), 0 states have call successors, (0), 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 171 [2024-12-02 14:57:34,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:57:34,020 INFO L225 Difference]: With dead ends: 32540 [2024-12-02 14:57:34,020 INFO L226 Difference]: Without dead ends: 22435 [2024-12-02 14:57:34,025 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 365 SyntacticMatches, 1 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11281 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=3997, Invalid=31159, Unknown=0, NotChecked=0, Total=35156 [2024-12-02 14:57:34,025 INFO L435 NwaCegarLoop]: 402 mSDtfsCounter, 1392 mSDsluCounter, 8351 mSDsCounter, 0 mSdLazyCounter, 4109 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1392 SdHoareTripleChecker+Valid, 8753 SdHoareTripleChecker+Invalid, 4139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 4109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:57:34,026 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1392 Valid, 8753 Invalid, 4139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 4109 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-02 14:57:34,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22435 states. [2024-12-02 14:57:34,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22435 to 18264. [2024-12-02 14:57:34,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18264 states, 18263 states have (on average 1.0964244647648251) internal successors, (20024), 18263 states have internal predecessors, (20024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:57:34,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18264 states to 18264 states and 20024 transitions. [2024-12-02 14:57:34,162 INFO L78 Accepts]: Start accepts. Automaton has 18264 states and 20024 transitions. Word has length 171 [2024-12-02 14:57:34,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:57:34,162 INFO L471 AbstractCegarLoop]: Abstraction has 18264 states and 20024 transitions. [2024-12-02 14:57:34,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 10.263157894736842) internal successors, (390), 38 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:57:34,162 INFO L276 IsEmpty]: Start isEmpty. Operand 18264 states and 20024 transitions. [2024-12-02 14:57:34,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-12-02 14:57:34,164 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:57:34,164 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:57:34,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-12-02 14:57:34,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2024-12-02 14:57:34,364 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:57:34,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:57:34,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1750799595, now seen corresponding path program 1 times [2024-12-02 14:57:34,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:57:34,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140413088] [2024-12-02 14:57:34,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:57:34,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:57:34,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:57:34,915 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 145 proven. 64 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-12-02 14:57:34,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:57:34,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140413088] [2024-12-02 14:57:34,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140413088] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:57:34,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462413242] [2024-12-02 14:57:34,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:57:34,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:57:34,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:57:34,917 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:57:34,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-12-02 14:57:35,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:57:35,145 INFO L256 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 14:57:35,147 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:57:36,110 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 157 proven. 60 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 14:57:36,110 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:57:36,914 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 136 proven. 93 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 14:57:36,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462413242] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:57:36,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:57:36,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 15] total 42 [2024-12-02 14:57:36,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61450410] [2024-12-02 14:57:36,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:57:36,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-12-02 14:57:36,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:57:36,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-12-02 14:57:36,916 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1595, Unknown=0, NotChecked=0, Total=1722 [2024-12-02 14:57:36,916 INFO L87 Difference]: Start difference. First operand 18264 states and 20024 transitions. Second operand has 42 states, 42 states have (on average 8.976190476190476) internal successors, (377), 42 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:57:40,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:57:40,239 INFO L93 Difference]: Finished difference Result 33054 states and 36408 transitions. [2024-12-02 14:57:40,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-12-02 14:57:40,240 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 8.976190476190476) internal successors, (377), 42 states have internal predecessors, (377), 0 states have call successors, (0), 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 171 [2024-12-02 14:57:40,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:57:40,251 INFO L225 Difference]: With dead ends: 33054 [2024-12-02 14:57:40,251 INFO L226 Difference]: Without dead ends: 22423 [2024-12-02 14:57:40,257 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 336 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1928 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1035, Invalid=7895, Unknown=0, NotChecked=0, Total=8930 [2024-12-02 14:57:40,257 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 989 mSDsluCounter, 5612 mSDsCounter, 0 mSdLazyCounter, 2330 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 5789 SdHoareTripleChecker+Invalid, 2350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:57:40,257 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 5789 Invalid, 2350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2330 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 14:57:40,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22423 states. [2024-12-02 14:57:40,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22423 to 21859. [2024-12-02 14:57:40,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21859 states, 21858 states have (on average 1.0973556592551925) internal successors, (23986), 21858 states have internal predecessors, (23986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:57:40,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21859 states to 21859 states and 23986 transitions. [2024-12-02 14:57:40,399 INFO L78 Accepts]: Start accepts. Automaton has 21859 states and 23986 transitions. Word has length 171 [2024-12-02 14:57:40,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:57:40,399 INFO L471 AbstractCegarLoop]: Abstraction has 21859 states and 23986 transitions. [2024-12-02 14:57:40,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 8.976190476190476) internal successors, (377), 42 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:57:40,399 INFO L276 IsEmpty]: Start isEmpty. Operand 21859 states and 23986 transitions. [2024-12-02 14:57:40,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-12-02 14:57:40,400 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:57:40,400 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 14:57:40,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-12-02 14:57:40,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2024-12-02 14:57:40,601 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:57:40,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:57:40,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1499778277, now seen corresponding path program 1 times [2024-12-02 14:57:40,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:57:40,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249273684] [2024-12-02 14:57:40,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:57:40,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:57:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:57:41,423 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 45 proven. 197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:57:41,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:57:41,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249273684] [2024-12-02 14:57:41,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249273684] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:57:41,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134824219] [2024-12-02 14:57:41,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:57:41,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:57:41,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:57:41,425 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:57:41,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf3d20e-464a-46c8-aaff-0e31964fd959/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-12-02 14:57:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:57:41,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 87 conjuncts are in the unsatisfiable core [2024-12-02 14:57:41,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:57:46,358 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 45 proven. 197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:57:46,358 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:57:56,393 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 33 proven. 209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:57:56,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134824219] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:57:56,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:57:56,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 40, 36] total 95 [2024-12-02 14:57:56,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405500296] [2024-12-02 14:57:56,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:57:56,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2024-12-02 14:57:56,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:57:56,394 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2024-12-02 14:57:56,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=956, Invalid=7974, Unknown=0, NotChecked=0, Total=8930 [2024-12-02 14:57:56,394 INFO L87 Difference]: Start difference. First operand 21859 states and 23986 transitions. Second operand has 95 states, 95 states have (on average 5.08421052631579) internal successors, (483), 95 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)