./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/bin/uautomizer-verify-jihMAELWvX --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 4ac9738018cdb6c628ad42533cfecc5c9af778919d271278199945a85d10a362 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:58:29,216 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:58:29,307 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 16:58:29,315 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:58:29,315 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:58:29,355 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:58:29,356 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:58:29,357 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:58:29,358 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:58:29,359 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:58:29,360 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:58:29,360 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:58:29,362 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:58:29,362 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:58:29,364 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:58:29,365 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:58:29,365 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:58:29,366 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:58:29,366 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:58:29,366 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:58:29,367 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:58:29,372 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:58:29,372 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:58:29,373 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:58:29,373 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:58:29,373 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:58:29,373 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:58:29,374 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:58:29,374 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:58:29,374 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:58:29,374 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:58:29,375 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:58:29,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:58:29,375 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:58:29,375 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:58:29,377 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:58:29,377 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:58:29,377 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:58:29,378 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:58:29,379 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:58:29,379 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:58:29,380 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:58:29,380 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ac9738018cdb6c628ad42533cfecc5c9af778919d271278199945a85d10a362 [2024-11-08 16:58:29,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:58:29,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:58:29,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:58:29,752 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:58:29,752 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:58:29,754 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c Unable to find full path for "g++" [2024-11-08 16:58:31,862 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:58:32,080 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:58:32,081 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-08 16:58:32,092 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/bin/uautomizer-verify-jihMAELWvX/data/8e40b11b3/284d7481c20245ad83eb62c044a1e1f0/FLAG1ba8659c4 [2024-11-08 16:58:32,445 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/bin/uautomizer-verify-jihMAELWvX/data/8e40b11b3/284d7481c20245ad83eb62c044a1e1f0 [2024-11-08 16:58:32,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:58:32,449 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:58:32,451 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:58:32,451 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:58:32,459 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:58:32,460 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:58:32" (1/1) ... [2024-11-08 16:58:32,461 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@455a5709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:58:32, skipping insertion in model container [2024-11-08 16:58:32,462 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:58:32" (1/1) ... [2024-11-08 16:58:32,495 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:58:32,747 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_fcd5e248-ba30-40c1-a818-351fa4d890a4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4411,4424] [2024-11-08 16:58:32,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:58:32,799 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:58:32,846 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_fcd5e248-ba30-40c1-a818-351fa4d890a4/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4411,4424] [2024-11-08 16:58:32,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:58:32,896 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:58:32,897 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:58:32 WrapperNode [2024-11-08 16:58:32,897 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:58:32,898 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:58:32,898 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:58:32,899 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:58:32,906 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:58:32" (1/1) ... [2024-11-08 16:58:32,916 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:58:32" (1/1) ... [2024-11-08 16:58:32,964 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 362 [2024-11-08 16:58:32,964 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:58:32,965 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:58:32,965 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:58:32,965 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:58:32,986 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:58:32" (1/1) ... [2024-11-08 16:58:32,986 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:58:32" (1/1) ... [2024-11-08 16:58:32,994 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:58:32" (1/1) ... [2024-11-08 16:58:33,024 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]. [2024-11-08 16:58:33,027 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:58:32" (1/1) ... [2024-11-08 16:58:33,027 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:58:32" (1/1) ... [2024-11-08 16:58:33,034 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:58:32" (1/1) ... [2024-11-08 16:58:33,041 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:58:32" (1/1) ... [2024-11-08 16:58:33,047 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:58:32" (1/1) ... [2024-11-08 16:58:33,049 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:58:32" (1/1) ... [2024-11-08 16:58:33,055 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:58:33,056 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:58:33,057 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:58:33,057 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:58:33,059 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:58:32" (1/1) ... [2024-11-08 16:58:33,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:58:33,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:58:33,112 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:58:33,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:58:33,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:58:33,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:58:33,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:58:33,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:58:33,330 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:58:33,332 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:58:33,901 INFO L? ?]: Removed 35 outVars from TransFormulas that were not future-live. [2024-11-08 16:58:33,902 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:58:33,923 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:58:33,923 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 16:58:33,923 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:58:33 BoogieIcfgContainer [2024-11-08 16:58:33,924 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:58:33,928 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:58:33,929 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:58:33,933 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:58:33,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:58:32" (1/3) ... [2024-11-08 16:58:33,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ea2a51c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:58:33, skipping insertion in model container [2024-11-08 16:58:33,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:58:32" (2/3) ... [2024-11-08 16:58:33,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ea2a51c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:58:33, skipping insertion in model container [2024-11-08 16:58:33,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:58:33" (3/3) ... [2024-11-08 16:58:33,938 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-08 16:58:33,961 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:58:33,961 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 16:58:34,078 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:58:34,086 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;@18af5b4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:58:34,086 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 16:58:34,094 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) [2024-11-08 16:58:34,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-08 16:58:34,108 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:58:34,109 INFO L215 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] [2024-11-08 16:58:34,110 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:58:34,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:58:34,119 INFO L85 PathProgramCache]: Analyzing trace with hash 716810707, now seen corresponding path program 1 times [2024-11-08 16:58:34,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:58:34,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636745806] [2024-11-08 16:58:34,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:58:34,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:58:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:34,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:58:34,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:58:34,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636745806] [2024-11-08 16:58:34,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636745806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:58:34,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:58:34,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:58:34,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663558660] [2024-11-08 16:58:34,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:58:34,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:58:34,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:58:34,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:58:34,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:58:34,696 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) [2024-11-08 16:58:34,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:58:34,781 INFO L93 Difference]: Finished difference Result 205 states and 324 transitions. [2024-11-08 16:58:34,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:58:34,787 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 [2024-11-08 16:58:34,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:58:34,803 INFO L225 Difference]: With dead ends: 205 [2024-11-08 16:58:34,803 INFO L226 Difference]: Without dead ends: 132 [2024-11-08 16:58:34,807 INFO L431 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 [2024-11-08 16:58:34,812 INFO L432 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 [2024-11-08 16:58:34,816 INFO L433 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] [2024-11-08 16:58:34,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-08 16:58:34,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2024-11-08 16:58:34,875 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) [2024-11-08 16:58:34,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 194 transitions. [2024-11-08 16:58:34,882 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 194 transitions. Word has length 38 [2024-11-08 16:58:34,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:58:34,883 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 194 transitions. [2024-11-08 16:58:34,884 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) [2024-11-08 16:58:34,884 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 194 transitions. [2024-11-08 16:58:34,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-08 16:58:34,887 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:58:34,888 INFO L215 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] [2024-11-08 16:58:34,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:58:34,888 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:58:34,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:58:34,889 INFO L85 PathProgramCache]: Analyzing trace with hash -935293361, now seen corresponding path program 1 times [2024-11-08 16:58:34,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:58:34,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182157558] [2024-11-08 16:58:34,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:58:34,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:58:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:35,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:58:35,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:58:35,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182157558] [2024-11-08 16:58:35,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182157558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:58:35,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:58:35,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:58:35,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810478285] [2024-11-08 16:58:35,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:58:35,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:58:35,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:58:35,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:58:35,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:58:35,035 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) [2024-11-08 16:58:35,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:58:35,068 INFO L93 Difference]: Finished difference Result 318 states and 490 transitions. [2024-11-08 16:58:35,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:58:35,069 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 [2024-11-08 16:58:35,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:58:35,071 INFO L225 Difference]: With dead ends: 318 [2024-11-08 16:58:35,071 INFO L226 Difference]: Without dead ends: 208 [2024-11-08 16:58:35,072 INFO L431 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 [2024-11-08 16:58:35,073 INFO L432 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 [2024-11-08 16:58:35,074 INFO L433 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] [2024-11-08 16:58:35,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-08 16:58:35,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 206. [2024-11-08 16:58:35,087 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) [2024-11-08 16:58:35,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 313 transitions. [2024-11-08 16:58:35,093 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 313 transitions. Word has length 39 [2024-11-08 16:58:35,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:58:35,094 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 313 transitions. [2024-11-08 16:58:35,094 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) [2024-11-08 16:58:35,094 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 313 transitions. [2024-11-08 16:58:35,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-08 16:58:35,095 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:58:35,096 INFO L215 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] [2024-11-08 16:58:35,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:58:35,096 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:58:35,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:58:35,098 INFO L85 PathProgramCache]: Analyzing trace with hash 830312666, now seen corresponding path program 1 times [2024-11-08 16:58:35,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:58:35,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458418678] [2024-11-08 16:58:35,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:58:35,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:58:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:35,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:58:35,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:58:35,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458418678] [2024-11-08 16:58:35,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458418678] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:58:35,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:58:35,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:58:35,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434621883] [2024-11-08 16:58:35,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:58:35,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:58:35,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:58:35,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:58:35,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:58:35,295 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) [2024-11-08 16:58:35,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:58:35,446 INFO L93 Difference]: Finished difference Result 950 states and 1485 transitions. [2024-11-08 16:58:35,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:58:35,447 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 [2024-11-08 16:58:35,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:58:35,451 INFO L225 Difference]: With dead ends: 950 [2024-11-08 16:58:35,452 INFO L226 Difference]: Without dead ends: 764 [2024-11-08 16:58:35,453 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:58:35,454 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 501 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2024-11-08 16:58:35,455 INFO L433 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] [2024-11-08 16:58:35,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2024-11-08 16:58:35,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 390. [2024-11-08 16:58:35,485 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) [2024-11-08 16:58:35,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 597 transitions. [2024-11-08 16:58:35,488 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 597 transitions. Word has length 40 [2024-11-08 16:58:35,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:58:35,489 INFO L471 AbstractCegarLoop]: Abstraction has 390 states and 597 transitions. [2024-11-08 16:58:35,489 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) [2024-11-08 16:58:35,490 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 597 transitions. [2024-11-08 16:58:35,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-08 16:58:35,491 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:58:35,491 INFO L215 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] [2024-11-08 16:58:35,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 16:58:35,492 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:58:35,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:58:35,492 INFO L85 PathProgramCache]: Analyzing trace with hash -49567444, now seen corresponding path program 1 times [2024-11-08 16:58:35,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:58:35,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489821073] [2024-11-08 16:58:35,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:58:35,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:58:35,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:35,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:58:35,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:58:35,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489821073] [2024-11-08 16:58:35,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489821073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:58:35,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:58:35,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:58:35,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475812147] [2024-11-08 16:58:35,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:58:35,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:58:35,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:58:35,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:58:35,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:58:35,748 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) [2024-11-08 16:58:35,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:58:35,844 INFO L93 Difference]: Finished difference Result 1348 states and 2080 transitions. [2024-11-08 16:58:35,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:58:35,848 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 [2024-11-08 16:58:35,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:58:35,852 INFO L225 Difference]: With dead ends: 1348 [2024-11-08 16:58:35,852 INFO L226 Difference]: Without dead ends: 978 [2024-11-08 16:58:35,854 INFO L431 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 [2024-11-08 16:58:35,856 INFO L432 NwaCegarLoop]: 220 mSDtfsCounter, 275 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2024-11-08 16:58:35,856 INFO L433 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] [2024-11-08 16:58:35,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2024-11-08 16:58:35,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 974. [2024-11-08 16:58:35,898 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) [2024-11-08 16:58:35,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1493 transitions. [2024-11-08 16:58:35,904 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1493 transitions. Word has length 41 [2024-11-08 16:58:35,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:58:35,905 INFO L471 AbstractCegarLoop]: Abstraction has 974 states and 1493 transitions. [2024-11-08 16:58:35,905 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) [2024-11-08 16:58:35,905 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1493 transitions. [2024-11-08 16:58:35,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-08 16:58:35,907 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:58:35,907 INFO L215 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] [2024-11-08 16:58:35,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 16:58:35,907 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:58:35,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:58:35,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1536012938, now seen corresponding path program 1 times [2024-11-08 16:58:35,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:58:35,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928921210] [2024-11-08 16:58:35,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:58:35,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:58:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:35,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:58:35,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:58:35,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928921210] [2024-11-08 16:58:35,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928921210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:58:35,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:58:35,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:58:35,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850156121] [2024-11-08 16:58:35,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:58:35,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:58:35,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:58:35,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:58:35,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:58:35,985 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) [2024-11-08 16:58:36,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:58:36,024 INFO L93 Difference]: Finished difference Result 2490 states and 3807 transitions. [2024-11-08 16:58:36,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:58:36,025 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 [2024-11-08 16:58:36,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:58:36,031 INFO L225 Difference]: With dead ends: 2490 [2024-11-08 16:58:36,031 INFO L226 Difference]: Without dead ends: 1536 [2024-11-08 16:58:36,034 INFO L431 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 [2024-11-08 16:58:36,035 INFO L432 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 [2024-11-08 16:58:36,036 INFO L433 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] [2024-11-08 16:58:36,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2024-11-08 16:58:36,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1534. [2024-11-08 16:58:36,073 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) [2024-11-08 16:58:36,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1534 states to 1534 states and 2309 transitions. [2024-11-08 16:58:36,078 INFO L78 Accepts]: Start accepts. Automaton has 1534 states and 2309 transitions. Word has length 42 [2024-11-08 16:58:36,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:58:36,079 INFO L471 AbstractCegarLoop]: Abstraction has 1534 states and 2309 transitions. [2024-11-08 16:58:36,079 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) [2024-11-08 16:58:36,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1534 states and 2309 transitions. [2024-11-08 16:58:36,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-08 16:58:36,080 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:58:36,080 INFO L215 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] [2024-11-08 16:58:36,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 16:58:36,081 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:58:36,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:58:36,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1650560821, now seen corresponding path program 1 times [2024-11-08 16:58:36,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:58:36,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504512207] [2024-11-08 16:58:36,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:58:36,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:58:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:36,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:58:36,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:58:36,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504512207] [2024-11-08 16:58:36,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504512207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:58:36,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:58:36,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:58:36,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771257329] [2024-11-08 16:58:36,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:58:36,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:58:36,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:58:36,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:58:36,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:58:36,235 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) [2024-11-08 16:58:36,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:58:36,453 INFO L93 Difference]: Finished difference Result 4562 states and 6887 transitions. [2024-11-08 16:58:36,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:58:36,455 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 [2024-11-08 16:58:36,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:58:36,471 INFO L225 Difference]: With dead ends: 4562 [2024-11-08 16:58:36,472 INFO L226 Difference]: Without dead ends: 3048 [2024-11-08 16:58:36,474 INFO L431 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 [2024-11-08 16:58:36,479 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 523 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:58:36,483 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 137 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 16:58:36,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3048 states. [2024-11-08 16:58:36,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3048 to 3046. [2024-11-08 16:58:36,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3046 states, 3045 states have (on average 1.4965517241379311) internal successors, (4557), 3045 states have internal predecessors, (4557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:58:36,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3046 states to 3046 states and 4557 transitions. [2024-11-08 16:58:36,566 INFO L78 Accepts]: Start accepts. Automaton has 3046 states and 4557 transitions. Word has length 43 [2024-11-08 16:58:36,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:58:36,567 INFO L471 AbstractCegarLoop]: Abstraction has 3046 states and 4557 transitions. [2024-11-08 16:58:36,567 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) [2024-11-08 16:58:36,567 INFO L276 IsEmpty]: Start isEmpty. Operand 3046 states and 4557 transitions. [2024-11-08 16:58:36,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-08 16:58:36,568 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:58:36,569 INFO L215 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] [2024-11-08 16:58:36,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 16:58:36,570 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:58:36,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:58:36,570 INFO L85 PathProgramCache]: Analyzing trace with hash 836148826, now seen corresponding path program 1 times [2024-11-08 16:58:36,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:58:36,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657185838] [2024-11-08 16:58:36,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:58:36,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:58:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:36,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:58:36,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:58:36,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657185838] [2024-11-08 16:58:36,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657185838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:58:36,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:58:36,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:58:36,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938354871] [2024-11-08 16:58:36,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:58:36,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:58:36,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:58:36,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:58:36,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:58:36,944 INFO L87 Difference]: Start difference. First operand 3046 states and 4557 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) [2024-11-08 16:58:36,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:58:37,000 INFO L93 Difference]: Finished difference Result 3240 states and 4846 transitions. [2024-11-08 16:58:37,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:58:37,001 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 [2024-11-08 16:58:37,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:58:37,012 INFO L225 Difference]: With dead ends: 3240 [2024-11-08 16:58:37,012 INFO L226 Difference]: Without dead ends: 3238 [2024-11-08 16:58:37,013 INFO L431 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 [2024-11-08 16:58:37,018 INFO L432 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 [2024-11-08 16:58:37,018 INFO L433 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] [2024-11-08 16:58:37,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3238 states. [2024-11-08 16:58:37,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3238 to 3238. [2024-11-08 16:58:37,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3238 states, 3237 states have (on average 1.4670991658943466) internal successors, (4749), 3237 states have internal predecessors, (4749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:58:37,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3238 states to 3238 states and 4749 transitions. [2024-11-08 16:58:37,099 INFO L78 Accepts]: Start accepts. Automaton has 3238 states and 4749 transitions. Word has length 43 [2024-11-08 16:58:37,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:58:37,099 INFO L471 AbstractCegarLoop]: Abstraction has 3238 states and 4749 transitions. [2024-11-08 16:58:37,100 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) [2024-11-08 16:58:37,100 INFO L276 IsEmpty]: Start isEmpty. Operand 3238 states and 4749 transitions. [2024-11-08 16:58:37,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-08 16:58:37,102 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:58:37,103 INFO L215 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] [2024-11-08 16:58:37,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 16:58:37,103 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:58:37,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:58:37,104 INFO L85 PathProgramCache]: Analyzing trace with hash 161382844, now seen corresponding path program 1 times [2024-11-08 16:58:37,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:58:37,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481483203] [2024-11-08 16:58:37,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:58:37,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:58:37,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:37,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:58:37,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:58:37,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481483203] [2024-11-08 16:58:37,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481483203] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:58:37,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:58:37,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:58:37,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640286600] [2024-11-08 16:58:37,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:58:37,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:58:37,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:58:37,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:58:37,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:58:37,223 INFO L87 Difference]: Start difference. First operand 3238 states and 4749 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) [2024-11-08 16:58:37,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:58:37,282 INFO L93 Difference]: Finished difference Result 7168 states and 10493 transitions. [2024-11-08 16:58:37,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:58:37,282 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 [2024-11-08 16:58:37,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:58:37,296 INFO L225 Difference]: With dead ends: 7168 [2024-11-08 16:58:37,296 INFO L226 Difference]: Without dead ends: 3950 [2024-11-08 16:58:37,299 INFO L431 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 [2024-11-08 16:58:37,301 INFO L432 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 [2024-11-08 16:58:37,301 INFO L433 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] [2024-11-08 16:58:37,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3950 states. [2024-11-08 16:58:37,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3950 to 3928. [2024-11-08 16:58:37,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3928 states, 3927 states have (on average 1.452253628724217) internal successors, (5703), 3927 states have internal predecessors, (5703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:58:37,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3928 states to 3928 states and 5703 transitions. [2024-11-08 16:58:37,407 INFO L78 Accepts]: Start accepts. Automaton has 3928 states and 5703 transitions. Word has length 44 [2024-11-08 16:58:37,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:58:37,407 INFO L471 AbstractCegarLoop]: Abstraction has 3928 states and 5703 transitions. [2024-11-08 16:58:37,408 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) [2024-11-08 16:58:37,408 INFO L276 IsEmpty]: Start isEmpty. Operand 3928 states and 5703 transitions. [2024-11-08 16:58:37,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-08 16:58:37,410 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:58:37,410 INFO L215 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] [2024-11-08 16:58:37,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 16:58:37,411 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:58:37,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:58:37,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1477612707, now seen corresponding path program 1 times [2024-11-08 16:58:37,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:58:37,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158968466] [2024-11-08 16:58:37,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:58:37,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:58:37,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:37,528 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:58:37,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:58:37,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158968466] [2024-11-08 16:58:37,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158968466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:58:37,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:58:37,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:58:37,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481925052] [2024-11-08 16:58:37,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:58:37,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:58:37,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:58:37,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:58:37,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:58:37,531 INFO L87 Difference]: Start difference. First operand 3928 states and 5703 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) [2024-11-08 16:58:37,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:58:37,597 INFO L93 Difference]: Finished difference Result 9069 states and 13163 transitions. [2024-11-08 16:58:37,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:58:37,598 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 [2024-11-08 16:58:37,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:58:37,617 INFO L225 Difference]: With dead ends: 9069 [2024-11-08 16:58:37,618 INFO L226 Difference]: Without dead ends: 6251 [2024-11-08 16:58:37,623 INFO L431 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 [2024-11-08 16:58:37,625 INFO L432 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 [2024-11-08 16:58:37,626 INFO L433 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] [2024-11-08 16:58:37,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6251 states. [2024-11-08 16:58:37,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6251 to 6249. [2024-11-08 16:58:37,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6249 states, 6248 states have (on average 1.4322983354673495) internal successors, (8949), 6248 states have internal predecessors, (8949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:58:37,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6249 states to 6249 states and 8949 transitions. [2024-11-08 16:58:37,792 INFO L78 Accepts]: Start accepts. Automaton has 6249 states and 8949 transitions. Word has length 63 [2024-11-08 16:58:37,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:58:37,792 INFO L471 AbstractCegarLoop]: Abstraction has 6249 states and 8949 transitions. [2024-11-08 16:58:37,792 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) [2024-11-08 16:58:37,792 INFO L276 IsEmpty]: Start isEmpty. Operand 6249 states and 8949 transitions. [2024-11-08 16:58:37,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-08 16:58:37,795 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:58:37,795 INFO L215 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] [2024-11-08 16:58:37,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 16:58:37,796 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:58:37,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:58:37,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1700716252, now seen corresponding path program 1 times [2024-11-08 16:58:37,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:58:37,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412784594] [2024-11-08 16:58:37,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:58:37,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:58:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:38,313 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:58:38,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:58:38,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412784594] [2024-11-08 16:58:38,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412784594] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:58:38,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260569146] [2024-11-08 16:58:38,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:58:38,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:58:38,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:58:38,317 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:58:38,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 16:58:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:38,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 16:58:38,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:58:39,216 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:58:39,216 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:58:39,863 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:58:39,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260569146] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:58:39,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:58:39,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 21 [2024-11-08 16:58:39,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858597330] [2024-11-08 16:58:39,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:58:39,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 16:58:39,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:58:39,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 16:58:39,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-11-08 16:58:39,867 INFO L87 Difference]: Start difference. First operand 6249 states and 8949 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) [2024-11-08 16:58:49,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:58:49,520 INFO L93 Difference]: Finished difference Result 37420 states and 53270 transitions. [2024-11-08 16:58:49,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-11-08 16:58:49,521 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 [2024-11-08 16:58:49,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:58:49,610 INFO L225 Difference]: With dead ends: 37420 [2024-11-08 16:58:49,610 INFO L226 Difference]: Without dead ends: 31194 [2024-11-08 16:58:49,630 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5847 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=2929, Invalid=12571, Unknown=0, NotChecked=0, Total=15500 [2024-11-08 16:58:49,631 INFO L432 NwaCegarLoop]: 191 mSDtfsCounter, 7999 mSDsluCounter, 1945 mSDsCounter, 0 mSdLazyCounter, 2460 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7999 SdHoareTripleChecker+Valid, 2136 SdHoareTripleChecker+Invalid, 2580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-08 16:58:49,632 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7999 Valid, 2136 Invalid, 2580 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [120 Valid, 2460 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-08 16:58:49,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31194 states. [2024-11-08 16:58:50,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31194 to 22973. [2024-11-08 16:58:50,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22973 states, 22972 states have (on average 1.4057113007139126) internal successors, (32292), 22972 states have internal predecessors, (32292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:58:50,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22973 states to 22973 states and 32292 transitions. [2024-11-08 16:58:50,532 INFO L78 Accepts]: Start accepts. Automaton has 22973 states and 32292 transitions. Word has length 63 [2024-11-08 16:58:50,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:58:50,533 INFO L471 AbstractCegarLoop]: Abstraction has 22973 states and 32292 transitions. [2024-11-08 16:58:50,534 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) [2024-11-08 16:58:50,534 INFO L276 IsEmpty]: Start isEmpty. Operand 22973 states and 32292 transitions. [2024-11-08 16:58:50,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-08 16:58:50,538 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:58:50,538 INFO L215 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] [2024-11-08 16:58:50,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 16:58:50,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 16:58:50,740 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:58:50,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:58:50,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1430287189, now seen corresponding path program 1 times [2024-11-08 16:58:50,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:58:50,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310035255] [2024-11-08 16:58:50,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:58:50,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:58:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:50,874 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:58:50,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:58:50,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310035255] [2024-11-08 16:58:50,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310035255] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:58:50,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:58:50,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:58:50,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685247866] [2024-11-08 16:58:50,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:58:50,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:58:50,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:58:50,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:58:50,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:58:50,882 INFO L87 Difference]: Start difference. First operand 22973 states and 32292 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) [2024-11-08 16:58:51,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:58:51,174 INFO L93 Difference]: Finished difference Result 45035 states and 62928 transitions. [2024-11-08 16:58:51,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:58:51,176 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 [2024-11-08 16:58:51,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:58:51,241 INFO L225 Difference]: With dead ends: 45035 [2024-11-08 16:58:51,242 INFO L226 Difference]: Without dead ends: 30607 [2024-11-08 16:58:51,255 INFO L431 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 [2024-11-08 16:58:51,256 INFO L432 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 [2024-11-08 16:58:51,256 INFO L433 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] [2024-11-08 16:58:51,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30607 states. [2024-11-08 16:58:51,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30607 to 30605. [2024-11-08 16:58:51,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30605 states, 30604 states have (on average 1.3802770879623578) internal successors, (42242), 30604 states have internal predecessors, (42242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:58:52,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30605 states to 30605 states and 42242 transitions. [2024-11-08 16:58:52,038 INFO L78 Accepts]: Start accepts. Automaton has 30605 states and 42242 transitions. Word has length 64 [2024-11-08 16:58:52,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:58:52,038 INFO L471 AbstractCegarLoop]: Abstraction has 30605 states and 42242 transitions. [2024-11-08 16:58:52,039 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) [2024-11-08 16:58:52,039 INFO L276 IsEmpty]: Start isEmpty. Operand 30605 states and 42242 transitions. [2024-11-08 16:58:52,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-08 16:58:52,043 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:58:52,044 INFO L215 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] [2024-11-08 16:58:52,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 16:58:52,044 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:58:52,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:58:52,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1004794437, now seen corresponding path program 1 times [2024-11-08 16:58:52,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:58:52,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536536142] [2024-11-08 16:58:52,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:58:52,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:58:52,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:52,167 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:58:52,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:58:52,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536536142] [2024-11-08 16:58:52,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536536142] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:58:52,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:58:52,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:58:52,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578041064] [2024-11-08 16:58:52,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:58:52,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:58:52,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:58:52,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:58:52,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:58:52,172 INFO L87 Difference]: Start difference. First operand 30605 states and 42242 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) [2024-11-08 16:58:52,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:58:52,420 INFO L93 Difference]: Finished difference Result 46532 states and 64148 transitions. [2024-11-08 16:58:52,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:58:52,421 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 [2024-11-08 16:58:52,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:58:52,489 INFO L225 Difference]: With dead ends: 46532 [2024-11-08 16:58:52,489 INFO L226 Difference]: Without dead ends: 30607 [2024-11-08 16:58:52,507 INFO L431 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 [2024-11-08 16:58:52,508 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 64 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 252 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 [2024-11-08 16:58:52,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 252 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:58:52,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30607 states. [2024-11-08 16:58:53,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30607 to 29301. [2024-11-08 16:58:53,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29301 states, 29300 states have (on average 1.3714334470989762) internal successors, (40183), 29300 states have internal predecessors, (40183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:58:53,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29301 states to 29301 states and 40183 transitions. [2024-11-08 16:58:53,222 INFO L78 Accepts]: Start accepts. Automaton has 29301 states and 40183 transitions. Word has length 64 [2024-11-08 16:58:53,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:58:53,222 INFO L471 AbstractCegarLoop]: Abstraction has 29301 states and 40183 transitions. [2024-11-08 16:58:53,223 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) [2024-11-08 16:58:53,223 INFO L276 IsEmpty]: Start isEmpty. Operand 29301 states and 40183 transitions. [2024-11-08 16:58:53,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-08 16:58:53,229 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:58:53,230 INFO L215 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] [2024-11-08 16:58:53,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 16:58:53,230 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:58:53,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:58:53,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1956303618, now seen corresponding path program 1 times [2024-11-08 16:58:53,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:58:53,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615401501] [2024-11-08 16:58:53,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:58:53,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:58:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:53,404 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 16:58:53,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:58:53,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615401501] [2024-11-08 16:58:53,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615401501] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:58:53,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:58:53,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:58:53,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317418806] [2024-11-08 16:58:53,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:58:53,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:58:53,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:58:53,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:58:53,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:58:53,407 INFO L87 Difference]: Start difference. First operand 29301 states and 40183 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) [2024-11-08 16:58:53,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:58:53,757 INFO L93 Difference]: Finished difference Result 55964 states and 77291 transitions. [2024-11-08 16:58:53,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:58:53,757 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 [2024-11-08 16:58:53,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:58:53,850 INFO L225 Difference]: With dead ends: 55964 [2024-11-08 16:58:53,850 INFO L226 Difference]: Without dead ends: 44458 [2024-11-08 16:58:53,871 INFO L431 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 [2024-11-08 16:58:53,872 INFO L432 NwaCegarLoop]: 218 mSDtfsCounter, 346 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 582 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 [2024-11-08 16:58:53,872 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 582 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:58:53,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44458 states. [2024-11-08 16:58:54,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44458 to 39200. [2024-11-08 16:58:54,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39200 states, 39199 states have (on average 1.366335875915202) internal successors, (53559), 39199 states have internal predecessors, (53559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:58:54,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39200 states to 39200 states and 53559 transitions. [2024-11-08 16:58:54,677 INFO L78 Accepts]: Start accepts. Automaton has 39200 states and 53559 transitions. Word has length 64 [2024-11-08 16:58:54,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:58:54,677 INFO L471 AbstractCegarLoop]: Abstraction has 39200 states and 53559 transitions. [2024-11-08 16:58:54,678 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) [2024-11-08 16:58:54,678 INFO L276 IsEmpty]: Start isEmpty. Operand 39200 states and 53559 transitions. [2024-11-08 16:58:54,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-08 16:58:54,681 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:58:54,682 INFO L215 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] [2024-11-08 16:58:54,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 16:58:54,682 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:58:54,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:58:54,683 INFO L85 PathProgramCache]: Analyzing trace with hash 79620841, now seen corresponding path program 1 times [2024-11-08 16:58:54,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:58:54,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481877051] [2024-11-08 16:58:54,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:58:54,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:58:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:54,748 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:58:54,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:58:54,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481877051] [2024-11-08 16:58:54,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481877051] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:58:54,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:58:54,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:58:54,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727196966] [2024-11-08 16:58:54,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:58:54,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:58:54,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:58:54,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:58:54,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:58:54,751 INFO L87 Difference]: Start difference. First operand 39200 states and 53559 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) [2024-11-08 16:58:55,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:58:55,166 INFO L93 Difference]: Finished difference Result 67982 states and 92281 transitions. [2024-11-08 16:58:55,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:58:55,167 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 [2024-11-08 16:58:55,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:58:55,230 INFO L225 Difference]: With dead ends: 67982 [2024-11-08 16:58:55,231 INFO L226 Difference]: Without dead ends: 40501 [2024-11-08 16:58:55,257 INFO L431 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 [2024-11-08 16:58:55,258 INFO L432 NwaCegarLoop]: 164 mSDtfsCounter, 68 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 270 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 [2024-11-08 16:58:55,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 270 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:58:55,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40501 states. [2024-11-08 16:58:56,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40501 to 39243. [2024-11-08 16:58:56,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39243 states, 39242 states have (on average 1.3467203506447174) internal successors, (52848), 39242 states have internal predecessors, (52848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:58:56,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39243 states to 39243 states and 52848 transitions. [2024-11-08 16:58:56,106 INFO L78 Accepts]: Start accepts. Automaton has 39243 states and 52848 transitions. Word has length 64 [2024-11-08 16:58:56,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:58:56,107 INFO L471 AbstractCegarLoop]: Abstraction has 39243 states and 52848 transitions. [2024-11-08 16:58:56,107 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) [2024-11-08 16:58:56,107 INFO L276 IsEmpty]: Start isEmpty. Operand 39243 states and 52848 transitions. [2024-11-08 16:58:56,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-08 16:58:56,114 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:58:56,114 INFO L215 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] [2024-11-08 16:58:56,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 16:58:56,115 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:58:56,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:58:56,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1706388265, now seen corresponding path program 1 times [2024-11-08 16:58:56,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:58:56,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749812372] [2024-11-08 16:58:56,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:58:56,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:58:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:56,263 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 16:58:56,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:58:56,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749812372] [2024-11-08 16:58:56,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749812372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:58:56,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:58:56,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:58:56,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422008738] [2024-11-08 16:58:56,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:58:56,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:58:56,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:58:56,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:58:56,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:58:56,269 INFO L87 Difference]: Start difference. First operand 39243 states and 52848 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) [2024-11-08 16:58:56,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:58:56,685 INFO L93 Difference]: Finished difference Result 59638 states and 81024 transitions. [2024-11-08 16:58:56,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:58:56,686 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 [2024-11-08 16:58:56,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:58:56,756 INFO L225 Difference]: With dead ends: 59638 [2024-11-08 16:58:56,756 INFO L226 Difference]: Without dead ends: 51916 [2024-11-08 16:58:56,771 INFO L431 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 [2024-11-08 16:58:56,772 INFO L432 NwaCegarLoop]: 213 mSDtfsCounter, 355 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:58:56,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 557 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:58:56,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51916 states. [2024-11-08 16:58:57,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51916 to 46667. [2024-11-08 16:58:57,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46667 states, 46666 states have (on average 1.3462478035400505) internal successors, (62824), 46666 states have internal predecessors, (62824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:58:57,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46667 states to 46667 states and 62824 transitions. [2024-11-08 16:58:57,691 INFO L78 Accepts]: Start accepts. Automaton has 46667 states and 62824 transitions. Word has length 64 [2024-11-08 16:58:57,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:58:57,691 INFO L471 AbstractCegarLoop]: Abstraction has 46667 states and 62824 transitions. [2024-11-08 16:58:57,691 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) [2024-11-08 16:58:57,691 INFO L276 IsEmpty]: Start isEmpty. Operand 46667 states and 62824 transitions. [2024-11-08 16:58:57,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-08 16:58:57,697 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:58:57,697 INFO L215 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] [2024-11-08 16:58:57,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 16:58:57,698 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:58:57,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:58:57,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1607670003, now seen corresponding path program 1 times [2024-11-08 16:58:57,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:58:57,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762835859] [2024-11-08 16:58:57,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:58:57,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:58:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:57,857 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 16:58:57,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:58:57,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762835859] [2024-11-08 16:58:57,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762835859] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:58:57,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:58:57,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:58:57,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385541116] [2024-11-08 16:58:57,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:58:57,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:58:57,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:58:57,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:58:57,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:58:57,860 INFO L87 Difference]: Start difference. First operand 46667 states and 62824 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) [2024-11-08 16:58:58,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:58:58,142 INFO L93 Difference]: Finished difference Result 69915 states and 94824 transitions. [2024-11-08 16:58:58,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:58:58,142 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 [2024-11-08 16:58:58,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:58:58,224 INFO L225 Difference]: With dead ends: 69915 [2024-11-08 16:58:58,224 INFO L226 Difference]: Without dead ends: 59462 [2024-11-08 16:58:58,244 INFO L431 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 [2024-11-08 16:58:58,245 INFO L432 NwaCegarLoop]: 210 mSDtfsCounter, 338 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:58:58,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 585 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:58:58,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59462 states. [2024-11-08 16:58:59,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59462 to 54200. [2024-11-08 16:58:59,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54200 states, 54199 states have (on average 1.343714828686876) internal successors, (72828), 54199 states have internal predecessors, (72828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:58:59,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54200 states to 54200 states and 72828 transitions. [2024-11-08 16:58:59,231 INFO L78 Accepts]: Start accepts. Automaton has 54200 states and 72828 transitions. Word has length 65 [2024-11-08 16:58:59,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:58:59,231 INFO L471 AbstractCegarLoop]: Abstraction has 54200 states and 72828 transitions. [2024-11-08 16:58:59,231 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) [2024-11-08 16:58:59,231 INFO L276 IsEmpty]: Start isEmpty. Operand 54200 states and 72828 transitions. [2024-11-08 16:58:59,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-08 16:58:59,236 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:58:59,236 INFO L215 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] [2024-11-08 16:58:59,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 16:58:59,236 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:58:59,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:58:59,237 INFO L85 PathProgramCache]: Analyzing trace with hash -292012416, now seen corresponding path program 1 times [2024-11-08 16:58:59,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:58:59,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502855534] [2024-11-08 16:58:59,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:58:59,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:58:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:58:59,351 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 16:58:59,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:58:59,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502855534] [2024-11-08 16:58:59,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502855534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:58:59,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:58:59,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:58:59,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129836661] [2024-11-08 16:58:59,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:58:59,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:58:59,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:58:59,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:58:59,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:58:59,354 INFO L87 Difference]: Start difference. First operand 54200 states and 72828 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) [2024-11-08 16:59:00,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:59:00,388 INFO L93 Difference]: Finished difference Result 130754 states and 175354 transitions. [2024-11-08 16:59:00,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:59:00,391 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 [2024-11-08 16:59:00,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:59:00,559 INFO L225 Difference]: With dead ends: 130754 [2024-11-08 16:59:00,559 INFO L226 Difference]: Without dead ends: 76614 [2024-11-08 16:59:00,596 INFO L431 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 [2024-11-08 16:59:00,597 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 483 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:59:00,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 141 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:59:00,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76614 states. [2024-11-08 16:59:01,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76614 to 76146. [2024-11-08 16:59:01,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76146 states, 76145 states have (on average 1.3291089368967102) internal successors, (101205), 76145 states have internal predecessors, (101205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:59:01,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76146 states to 76146 states and 101205 transitions. [2024-11-08 16:59:01,510 INFO L78 Accepts]: Start accepts. Automaton has 76146 states and 101205 transitions. Word has length 69 [2024-11-08 16:59:01,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:59:01,510 INFO L471 AbstractCegarLoop]: Abstraction has 76146 states and 101205 transitions. [2024-11-08 16:59:01,510 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) [2024-11-08 16:59:01,510 INFO L276 IsEmpty]: Start isEmpty. Operand 76146 states and 101205 transitions. [2024-11-08 16:59:01,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-08 16:59:01,517 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:59:01,517 INFO L215 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] [2024-11-08 16:59:01,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-08 16:59:01,517 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:59:01,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:59:01,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1359557829, now seen corresponding path program 1 times [2024-11-08 16:59:01,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:59:01,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531214202] [2024-11-08 16:59:01,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:59:01,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:59:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:01,710 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:59:01,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:59:01,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531214202] [2024-11-08 16:59:01,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531214202] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:59:01,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955771505] [2024-11-08 16:59:01,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:59:01,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:59:01,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:59:01,714 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:59:01,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 16:59:01,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:01,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 16:59:01,884 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:59:02,170 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:59:02,172 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:59:02,330 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:59:02,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955771505] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:59:02,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:59:02,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-08 16:59:02,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338074472] [2024-11-08 16:59:02,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:59:02,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 16:59:02,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:59:02,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 16:59:02,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:59:02,334 INFO L87 Difference]: Start difference. First operand 76146 states and 101205 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) [2024-11-08 16:59:03,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:59:03,348 INFO L93 Difference]: Finished difference Result 135885 states and 180394 transitions. [2024-11-08 16:59:03,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 16:59:03,349 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 [2024-11-08 16:59:03,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:59:03,449 INFO L225 Difference]: With dead ends: 135885 [2024-11-08 16:59:03,449 INFO L226 Difference]: Without dead ends: 91936 [2024-11-08 16:59:03,473 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 128 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-08 16:59:03,474 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 550 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:59:03,474 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 238 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 16:59:03,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91936 states. [2024-11-08 16:59:04,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91936 to 78144. [2024-11-08 16:59:04,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78144 states, 78143 states have (on average 1.321948223129391) internal successors, (103301), 78143 states have internal predecessors, (103301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:59:04,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78144 states to 78144 states and 103301 transitions. [2024-11-08 16:59:04,890 INFO L78 Accepts]: Start accepts. Automaton has 78144 states and 103301 transitions. Word has length 69 [2024-11-08 16:59:04,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:59:04,891 INFO L471 AbstractCegarLoop]: Abstraction has 78144 states and 103301 transitions. [2024-11-08 16:59:04,891 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) [2024-11-08 16:59:04,891 INFO L276 IsEmpty]: Start isEmpty. Operand 78144 states and 103301 transitions. [2024-11-08 16:59:04,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-08 16:59:04,897 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:59:04,897 INFO L215 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] [2024-11-08 16:59:04,922 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 16:59:05,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-08 16:59:05,098 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:59:05,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:59:05,099 INFO L85 PathProgramCache]: Analyzing trace with hash -2115524128, now seen corresponding path program 1 times [2024-11-08 16:59:05,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:59:05,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380961877] [2024-11-08 16:59:05,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:59:05,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:59:05,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:05,209 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 16:59:05,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:59:05,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380961877] [2024-11-08 16:59:05,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380961877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:59:05,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:59:05,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 16:59:05,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810200561] [2024-11-08 16:59:05,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:59:05,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:59:05,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:59:05,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:59:05,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:59:05,213 INFO L87 Difference]: Start difference. First operand 78144 states and 103301 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) [2024-11-08 16:59:05,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:59:05,709 INFO L93 Difference]: Finished difference Result 178048 states and 235042 transitions. [2024-11-08 16:59:05,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 16:59:05,709 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 [2024-11-08 16:59:05,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:59:05,823 INFO L225 Difference]: With dead ends: 178048 [2024-11-08 16:59:05,823 INFO L226 Difference]: Without dead ends: 100083 [2024-11-08 16:59:05,862 INFO L431 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 [2024-11-08 16:59:05,863 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 467 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 149 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 [2024-11-08 16:59:05,863 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 149 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:59:05,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100083 states. [2024-11-08 16:59:07,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100083 to 99678. [2024-11-08 16:59:07,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99678 states, 99677 states have (on average 1.3070618096451538) internal successors, (130284), 99677 states have internal predecessors, (130284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:59:07,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99678 states to 99678 states and 130284 transitions. [2024-11-08 16:59:07,985 INFO L78 Accepts]: Start accepts. Automaton has 99678 states and 130284 transitions. Word has length 69 [2024-11-08 16:59:07,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:59:07,985 INFO L471 AbstractCegarLoop]: Abstraction has 99678 states and 130284 transitions. [2024-11-08 16:59:07,985 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) [2024-11-08 16:59:07,985 INFO L276 IsEmpty]: Start isEmpty. Operand 99678 states and 130284 transitions. [2024-11-08 16:59:07,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-08 16:59:07,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:59:07,991 INFO L215 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] [2024-11-08 16:59:07,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-08 16:59:07,991 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:59:07,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:59:07,992 INFO L85 PathProgramCache]: Analyzing trace with hash 2022495301, now seen corresponding path program 1 times [2024-11-08 16:59:07,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:59:07,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155952168] [2024-11-08 16:59:07,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:59:07,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:59:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:08,144 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:59:08,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:59:08,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155952168] [2024-11-08 16:59:08,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155952168] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:59:08,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564449171] [2024-11-08 16:59:08,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:59:08,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:59:08,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:59:08,147 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:59:08,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 16:59:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:08,287 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 16:59:08,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:59:08,572 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:59:08,573 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:59:08,714 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:59:08,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564449171] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:59:08,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:59:08,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-08 16:59:08,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487118423] [2024-11-08 16:59:08,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:59:08,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 16:59:08,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:59:08,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 16:59:08,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:59:08,716 INFO L87 Difference]: Start difference. First operand 99678 states and 130284 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) [2024-11-08 16:59:09,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:59:09,396 INFO L93 Difference]: Finished difference Result 197431 states and 258863 transitions. [2024-11-08 16:59:09,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 16:59:09,397 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 [2024-11-08 16:59:09,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:59:09,528 INFO L225 Difference]: With dead ends: 197431 [2024-11-08 16:59:09,528 INFO L226 Difference]: Without dead ends: 120624 [2024-11-08 16:59:09,570 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 128 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-08 16:59:09,571 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 1370 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1370 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:59:09,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1370 Valid, 364 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 16:59:09,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120624 states. [2024-11-08 16:59:11,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120624 to 103239. [2024-11-08 16:59:11,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103239 states, 103238 states have (on average 1.3046358898855073) internal successors, (134688), 103238 states have internal predecessors, (134688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:59:12,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103239 states to 103239 states and 134688 transitions. [2024-11-08 16:59:12,118 INFO L78 Accepts]: Start accepts. Automaton has 103239 states and 134688 transitions. Word has length 69 [2024-11-08 16:59:12,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:59:12,118 INFO L471 AbstractCegarLoop]: Abstraction has 103239 states and 134688 transitions. [2024-11-08 16:59:12,118 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) [2024-11-08 16:59:12,118 INFO L276 IsEmpty]: Start isEmpty. Operand 103239 states and 134688 transitions. [2024-11-08 16:59:12,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-08 16:59:12,125 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:59:12,125 INFO L215 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] [2024-11-08 16:59:12,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 16:59:12,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:59:12,326 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:59:12,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:59:12,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1494386851, now seen corresponding path program 1 times [2024-11-08 16:59:12,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:59:12,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465859057] [2024-11-08 16:59:12,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:59:12,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:59:12,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:12,483 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:59:12,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:59:12,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465859057] [2024-11-08 16:59:12,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465859057] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:59:12,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559923299] [2024-11-08 16:59:12,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:59:12,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:59:12,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:59:12,486 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:59:12,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 16:59:12,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:12,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 16:59:12,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:59:12,962 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:59:12,962 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:59:13,146 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:59:13,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559923299] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:59:13,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:59:13,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-08 16:59:13,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161369455] [2024-11-08 16:59:13,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:59:13,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 16:59:13,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:59:13,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 16:59:13,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:59:13,150 INFO L87 Difference]: Start difference. First operand 103239 states and 134688 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) [2024-11-08 16:59:13,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:59:13,962 INFO L93 Difference]: Finished difference Result 205811 states and 269311 transitions. [2024-11-08 16:59:13,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 16:59:13,963 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 [2024-11-08 16:59:13,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:59:14,136 INFO L225 Difference]: With dead ends: 205811 [2024-11-08 16:59:14,136 INFO L226 Difference]: Without dead ends: 152953 [2024-11-08 16:59:14,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 130 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-08 16:59:14,182 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 588 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:59:14,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 280 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 16:59:14,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152953 states. [2024-11-08 16:59:16,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152953 to 116574. [2024-11-08 16:59:16,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116574 states, 116573 states have (on average 1.3047618230636597) internal successors, (152100), 116573 states have internal predecessors, (152100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:59:16,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116574 states to 116574 states and 152100 transitions. [2024-11-08 16:59:16,735 INFO L78 Accepts]: Start accepts. Automaton has 116574 states and 152100 transitions. Word has length 70 [2024-11-08 16:59:16,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:59:16,736 INFO L471 AbstractCegarLoop]: Abstraction has 116574 states and 152100 transitions. [2024-11-08 16:59:16,736 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) [2024-11-08 16:59:16,736 INFO L276 IsEmpty]: Start isEmpty. Operand 116574 states and 152100 transitions. [2024-11-08 16:59:16,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-08 16:59:16,740 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:59:16,740 INFO L215 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] [2024-11-08 16:59:16,756 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 16:59:16,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-08 16:59:16,941 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:59:16,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:59:16,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1653225065, now seen corresponding path program 1 times [2024-11-08 16:59:16,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:59:16,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785097780] [2024-11-08 16:59:16,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:59:16,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:59:17,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:17,502 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:59:17,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:59:17,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785097780] [2024-11-08 16:59:17,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785097780] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:59:17,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630001393] [2024-11-08 16:59:17,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:59:17,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:59:17,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:59:17,506 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:59:17,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd5e248-ba30-40c1-a818-351fa4d890a4/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 16:59:17,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:59:17,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 16:59:17,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:59:19,353 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:59:19,353 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:59:20,537 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:59:20,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630001393] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:59:20,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:59:20,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2024-11-08 16:59:20,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749247518] [2024-11-08 16:59:20,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:59:20,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-08 16:59:20,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:59:20,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-08 16:59:20,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=892, Unknown=0, NotChecked=0, Total=992 [2024-11-08 16:59:20,542 INFO L87 Difference]: Start difference. First operand 116574 states and 152100 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) [2024-11-08 17:00:49,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:00:49,861 INFO L93 Difference]: Finished difference Result 1703707 states and 2221645 transitions. [2024-11-08 17:00:49,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 841 states. [2024-11-08 17:00:49,862 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 [2024-11-08 17:00:49,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:00:54,167 INFO L225 Difference]: With dead ends: 1703707 [2024-11-08 17:00:54,167 INFO L226 Difference]: Without dead ends: 1588265 [2024-11-08 17:00:54,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 989 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 869 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377791 ImplicationChecksByTransitivity, 70.9s TimeCoverageRelationStatistics Valid=61970, Invalid=695800, Unknown=0, NotChecked=0, Total=757770 [2024-11-08 17:00:54,713 INFO L432 NwaCegarLoop]: 295 mSDtfsCounter, 33058 mSDsluCounter, 6237 mSDsCounter, 0 mSdLazyCounter, 9125 mSolverCounterSat, 704 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33058 SdHoareTripleChecker+Valid, 6532 SdHoareTripleChecker+Invalid, 9829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 704 IncrementalHoareTripleChecker+Valid, 9125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:00:54,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33058 Valid, 6532 Invalid, 9829 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [704 Valid, 9125 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2024-11-08 17:00:55,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1588265 states. [2024-11-08 17:01:06,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1588265 to 247605. [2024-11-08 17:01:06,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247605 states, 247604 states have (on average 1.3099061404500736) internal successors, (324338), 247604 states have internal predecessors, (324338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)