./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya --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 9db88713350d7306821dd75614e70e6b858505d66168ef8348e173e7f0890ab2 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:47:58,819 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:47:58,896 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 04:47:58,900 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:47:58,901 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:47:58,921 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:47:58,922 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:47:58,922 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:47:58,923 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:47:58,923 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:47:58,924 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:47:58,925 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:47:58,925 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:47:58,926 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:47:58,926 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:47:58,927 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:47:58,928 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:47:58,928 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:47:58,929 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:47:58,929 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:47:58,929 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:47:58,930 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:47:58,930 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:47:58,931 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:47:58,931 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:47:58,931 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:47:58,932 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:47:58,932 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:47:58,932 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:47:58,933 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:47:58,933 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:47:58,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:47:58,934 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:47:58,934 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:47:58,934 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:47:58,934 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:47:58,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:47:58,935 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:47:58,935 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:47:58,935 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:47:58,935 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:47:58,936 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:47:58,936 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_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9db88713350d7306821dd75614e70e6b858505d66168ef8348e173e7f0890ab2 [2023-11-29 04:47:59,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:47:59,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:47:59,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:47:59,180 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:47:59,180 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:47:59,181 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c [2023-11-29 04:48:01,914 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:48:02,143 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:48:02,144 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c [2023-11-29 04:48:02,154 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/data/23c9a12e2/8ad1ccfaf25844548b55639a83e814d6/FLAG440410683 [2023-11-29 04:48:02,169 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/data/23c9a12e2/8ad1ccfaf25844548b55639a83e814d6 [2023-11-29 04:48:02,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:48:02,173 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:48:02,174 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:48:02,175 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:48:02,180 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:48:02,181 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:48:02" (1/1) ... [2023-11-29 04:48:02,182 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d6b38d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:02, skipping insertion in model container [2023-11-29 04:48:02,182 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:48:02" (1/1) ... [2023-11-29 04:48:02,220 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:48:02,394 WARN L240 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_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c[9529,9542] [2023-11-29 04:48:02,398 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:48:02,410 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:48:02,458 WARN L240 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_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c[9529,9542] [2023-11-29 04:48:02,459 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:48:02,475 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:48:02,476 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:02 WrapperNode [2023-11-29 04:48:02,476 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:48:02,477 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:48:02,477 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:48:02,477 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:48:02,483 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:02" (1/1) ... [2023-11-29 04:48:02,493 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:02" (1/1) ... [2023-11-29 04:48:02,523 INFO L138 Inliner]: procedures = 24, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 308 [2023-11-29 04:48:02,524 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:48:02,524 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:48:02,524 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:48:02,524 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:48:02,533 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:02" (1/1) ... [2023-11-29 04:48:02,533 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:02" (1/1) ... [2023-11-29 04:48:02,536 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:02" (1/1) ... [2023-11-29 04:48:02,548 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]. [2023-11-29 04:48:02,548 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:02" (1/1) ... [2023-11-29 04:48:02,549 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:02" (1/1) ... [2023-11-29 04:48:02,555 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:02" (1/1) ... [2023-11-29 04:48:02,560 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:02" (1/1) ... [2023-11-29 04:48:02,562 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:02" (1/1) ... [2023-11-29 04:48:02,564 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:02" (1/1) ... [2023-11-29 04:48:02,569 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:48:02,570 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:48:02,570 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:48:02,570 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:48:02,571 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:02" (1/1) ... [2023-11-29 04:48:02,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:48:02,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:02,605 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:48:02,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:48:02,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:48:02,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:48:02,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:48:02,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:48:02,745 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:48:02,747 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:48:03,111 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:48:03,145 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:48:03,146 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 04:48:03,146 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:48:03 BoogieIcfgContainer [2023-11-29 04:48:03,146 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:48:03,149 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:48:03,149 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:48:03,152 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:48:03,152 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:48:02" (1/3) ... [2023-11-29 04:48:03,153 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36104b9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:48:03, skipping insertion in model container [2023-11-29 04:48:03,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:48:02" (2/3) ... [2023-11-29 04:48:03,153 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36104b9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:48:03, skipping insertion in model container [2023-11-29 04:48:03,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:48:03" (3/3) ... [2023-11-29 04:48:03,155 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c [2023-11-29 04:48:03,170 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:48:03,170 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 04:48:03,214 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:48:03,219 INFO L357 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, mHoare=true, 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;@5b1fd565, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:48:03,219 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 04:48:03,224 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 79 states have (on average 1.7721518987341771) internal successors, (140), 80 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:03,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-29 04:48:03,233 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:48:03,234 INFO L195 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] [2023-11-29 04:48:03,235 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:48:03,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:03,240 INFO L85 PathProgramCache]: Analyzing trace with hash -436537251, now seen corresponding path program 1 times [2023-11-29 04:48:03,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:03,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393307148] [2023-11-29 04:48:03,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:03,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:03,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:03,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:03,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:03,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393307148] [2023-11-29 04:48:03,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393307148] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:03,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:03,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:48:03,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035462131] [2023-11-29 04:48:03,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:03,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 04:48:03,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:03,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 04:48:03,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 04:48:03,467 INFO L87 Difference]: Start difference. First operand has 81 states, 79 states have (on average 1.7721518987341771) internal successors, (140), 80 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:03,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:48:03,495 INFO L93 Difference]: Finished difference Result 133 states and 227 transitions. [2023-11-29 04:48:03,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 04:48:03,497 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2023-11-29 04:48:03,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:48:03,505 INFO L225 Difference]: With dead ends: 133 [2023-11-29 04:48:03,505 INFO L226 Difference]: Without dead ends: 79 [2023-11-29 04:48:03,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 04:48:03,510 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:48:03,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 132 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:48:03,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-29 04:48:03,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2023-11-29 04:48:03,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.7307692307692308) internal successors, (135), 78 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:03,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 135 transitions. [2023-11-29 04:48:03,557 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 135 transitions. Word has length 26 [2023-11-29 04:48:03,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:48:03,557 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 135 transitions. [2023-11-29 04:48:03,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:03,558 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 135 transitions. [2023-11-29 04:48:03,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-29 04:48:03,559 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:48:03,559 INFO L195 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] [2023-11-29 04:48:03,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 04:48:03,559 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:48:03,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:03,560 INFO L85 PathProgramCache]: Analyzing trace with hash 2052991711, now seen corresponding path program 1 times [2023-11-29 04:48:03,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:03,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383077423] [2023-11-29 04:48:03,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:03,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:03,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:03,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:03,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:03,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383077423] [2023-11-29 04:48:03,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383077423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:03,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:03,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:48:03,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446720325] [2023-11-29 04:48:03,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:03,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:48:03,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:03,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:48:03,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:48:03,745 INFO L87 Difference]: Start difference. First operand 79 states and 135 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:03,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:48:03,805 INFO L93 Difference]: Finished difference Result 133 states and 221 transitions. [2023-11-29 04:48:03,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:48:03,806 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2023-11-29 04:48:03,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:48:03,807 INFO L225 Difference]: With dead ends: 133 [2023-11-29 04:48:03,807 INFO L226 Difference]: Without dead ends: 79 [2023-11-29 04:48:03,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:48:03,810 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 0 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:48:03,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 369 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:48:03,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-29 04:48:03,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2023-11-29 04:48:03,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.4230769230769231) internal successors, (111), 78 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:03,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 111 transitions. [2023-11-29 04:48:03,820 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 111 transitions. Word has length 26 [2023-11-29 04:48:03,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:48:03,820 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 111 transitions. [2023-11-29 04:48:03,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:03,821 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 111 transitions. [2023-11-29 04:48:03,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-29 04:48:03,823 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:48:03,823 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:03,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 04:48:03,823 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:48:03,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:03,824 INFO L85 PathProgramCache]: Analyzing trace with hash 794604760, now seen corresponding path program 1 times [2023-11-29 04:48:03,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:03,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063128681] [2023-11-29 04:48:03,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:03,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:03,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:03,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:03,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063128681] [2023-11-29 04:48:03,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063128681] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:03,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:03,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:48:03,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954818946] [2023-11-29 04:48:03,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:03,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:48:03,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:03,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:48:03,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:48:03,932 INFO L87 Difference]: Start difference. First operand 79 states and 111 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:03,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:48:03,960 INFO L93 Difference]: Finished difference Result 173 states and 263 transitions. [2023-11-29 04:48:03,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:48:03,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2023-11-29 04:48:03,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:48:03,962 INFO L225 Difference]: With dead ends: 173 [2023-11-29 04:48:03,962 INFO L226 Difference]: Without dead ends: 122 [2023-11-29 04:48:03,963 INFO L412 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 [2023-11-29 04:48:03,964 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 59 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 209 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 [2023-11-29 04:48:03,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 209 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:48:03,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-11-29 04:48:03,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2023-11-29 04:48:03,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.495798319327731) internal successors, (178), 119 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:03,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 178 transitions. [2023-11-29 04:48:03,977 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 178 transitions. Word has length 49 [2023-11-29 04:48:03,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:48:03,978 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 178 transitions. [2023-11-29 04:48:03,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:03,978 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 178 transitions. [2023-11-29 04:48:03,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-29 04:48:03,980 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:48:03,980 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:03,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 04:48:03,980 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:48:03,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:03,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1181399799, now seen corresponding path program 1 times [2023-11-29 04:48:03,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:03,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518560169] [2023-11-29 04:48:03,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:03,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:04,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:04,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:04,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:04,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518560169] [2023-11-29 04:48:04,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518560169] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:04,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:04,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:48:04,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008873333] [2023-11-29 04:48:04,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:04,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:48:04,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:04,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:48:04,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:48:04,135 INFO L87 Difference]: Start difference. First operand 120 states and 178 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:04,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:48:04,279 INFO L93 Difference]: Finished difference Result 580 states and 928 transitions. [2023-11-29 04:48:04,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:48:04,280 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2023-11-29 04:48:04,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:48:04,284 INFO L225 Difference]: With dead ends: 580 [2023-11-29 04:48:04,285 INFO L226 Difference]: Without dead ends: 488 [2023-11-29 04:48:04,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:48:04,287 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 653 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:48:04,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 590 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:48:04,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-11-29 04:48:04,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 210. [2023-11-29 04:48:04,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 1.5454545454545454) internal successors, (323), 209 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:04,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 323 transitions. [2023-11-29 04:48:04,309 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 323 transitions. Word has length 49 [2023-11-29 04:48:04,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:48:04,310 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 323 transitions. [2023-11-29 04:48:04,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:04,310 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 323 transitions. [2023-11-29 04:48:04,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-29 04:48:04,312 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:48:04,312 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:04,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 04:48:04,313 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:48:04,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:04,313 INFO L85 PathProgramCache]: Analyzing trace with hash -2044342744, now seen corresponding path program 1 times [2023-11-29 04:48:04,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:04,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411633122] [2023-11-29 04:48:04,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:04,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:04,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:04,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:04,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:04,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411633122] [2023-11-29 04:48:04,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411633122] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:04,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:04,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:48:04,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993962612] [2023-11-29 04:48:04,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:04,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:48:04,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:04,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:48:04,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:48:04,601 INFO L87 Difference]: Start difference. First operand 210 states and 323 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:04,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:48:04,639 INFO L93 Difference]: Finished difference Result 224 states and 340 transitions. [2023-11-29 04:48:04,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:48:04,640 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2023-11-29 04:48:04,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:48:04,642 INFO L225 Difference]: With dead ends: 224 [2023-11-29 04:48:04,642 INFO L226 Difference]: Without dead ends: 222 [2023-11-29 04:48:04,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:48:04,643 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 2 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:48:04,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 521 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:48:04,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2023-11-29 04:48:04,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 218. [2023-11-29 04:48:04,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.5253456221198156) internal successors, (331), 217 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:04,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 331 transitions. [2023-11-29 04:48:04,657 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 331 transitions. Word has length 50 [2023-11-29 04:48:04,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:48:04,657 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 331 transitions. [2023-11-29 04:48:04,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:04,658 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 331 transitions. [2023-11-29 04:48:04,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-29 04:48:04,659 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:48:04,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:04,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 04:48:04,660 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:48:04,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:04,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1050914879, now seen corresponding path program 1 times [2023-11-29 04:48:04,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:04,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823813188] [2023-11-29 04:48:04,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:04,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:04,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:04,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:04,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823813188] [2023-11-29 04:48:04,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823813188] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:04,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:04,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:48:04,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576793808] [2023-11-29 04:48:04,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:04,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:48:04,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:04,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:48:04,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:48:04,756 INFO L87 Difference]: Start difference. First operand 218 states and 331 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:04,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:48:04,789 INFO L93 Difference]: Finished difference Result 570 states and 889 transitions. [2023-11-29 04:48:04,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:48:04,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2023-11-29 04:48:04,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:48:04,794 INFO L225 Difference]: With dead ends: 570 [2023-11-29 04:48:04,794 INFO L226 Difference]: Without dead ends: 380 [2023-11-29 04:48:04,795 INFO L412 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 [2023-11-29 04:48:04,797 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 51 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:48:04,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 182 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:48:04,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2023-11-29 04:48:04,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 374. [2023-11-29 04:48:04,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 1.5361930294906165) internal successors, (573), 373 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:04,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 573 transitions. [2023-11-29 04:48:04,818 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 573 transitions. Word has length 51 [2023-11-29 04:48:04,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:48:04,819 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 573 transitions. [2023-11-29 04:48:04,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:04,819 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 573 transitions. [2023-11-29 04:48:04,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-29 04:48:04,821 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:48:04,821 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:04,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 04:48:04,822 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:48:04,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:04,822 INFO L85 PathProgramCache]: Analyzing trace with hash 2005837455, now seen corresponding path program 1 times [2023-11-29 04:48:04,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:04,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603498079] [2023-11-29 04:48:04,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:04,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:04,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:04,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:04,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:04,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603498079] [2023-11-29 04:48:04,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603498079] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:04,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:04,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:48:04,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876543888] [2023-11-29 04:48:04,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:04,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:48:04,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:04,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:48:04,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:48:04,892 INFO L87 Difference]: Start difference. First operand 374 states and 573 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:04,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:48:04,929 INFO L93 Difference]: Finished difference Result 1002 states and 1551 transitions. [2023-11-29 04:48:04,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:48:04,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2023-11-29 04:48:04,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:48:04,935 INFO L225 Difference]: With dead ends: 1002 [2023-11-29 04:48:04,935 INFO L226 Difference]: Without dead ends: 656 [2023-11-29 04:48:04,936 INFO L412 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 [2023-11-29 04:48:04,937 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 63 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 223 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 [2023-11-29 04:48:04,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 223 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:48:04,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2023-11-29 04:48:04,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 654. [2023-11-29 04:48:04,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 653 states have (on average 1.5267993874425727) internal successors, (997), 653 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:04,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 997 transitions. [2023-11-29 04:48:04,966 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 997 transitions. Word has length 52 [2023-11-29 04:48:04,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:48:04,966 INFO L495 AbstractCegarLoop]: Abstraction has 654 states and 997 transitions. [2023-11-29 04:48:04,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:04,966 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 997 transitions. [2023-11-29 04:48:04,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-29 04:48:04,967 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:48:04,967 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:04,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 04:48:04,968 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:48:04,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:04,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1823510447, now seen corresponding path program 1 times [2023-11-29 04:48:04,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:04,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26897548] [2023-11-29 04:48:04,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:04,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:05,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:05,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:05,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26897548] [2023-11-29 04:48:05,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26897548] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:05,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:05,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:48:05,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22038894] [2023-11-29 04:48:05,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:05,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:48:05,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:05,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:48:05,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:48:05,025 INFO L87 Difference]: Start difference. First operand 654 states and 997 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:05,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:48:05,071 INFO L93 Difference]: Finished difference Result 1778 states and 2711 transitions. [2023-11-29 04:48:05,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:48:05,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2023-11-29 04:48:05,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:48:05,079 INFO L225 Difference]: With dead ends: 1778 [2023-11-29 04:48:05,079 INFO L226 Difference]: Without dead ends: 1152 [2023-11-29 04:48:05,080 INFO L412 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 [2023-11-29 04:48:05,081 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 67 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 236 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 [2023-11-29 04:48:05,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 236 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:48:05,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2023-11-29 04:48:05,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 1150. [2023-11-29 04:48:05,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1149 states have (on average 1.5013054830287207) internal successors, (1725), 1149 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:05,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1725 transitions. [2023-11-29 04:48:05,131 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1725 transitions. Word has length 52 [2023-11-29 04:48:05,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:48:05,132 INFO L495 AbstractCegarLoop]: Abstraction has 1150 states and 1725 transitions. [2023-11-29 04:48:05,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:05,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1725 transitions. [2023-11-29 04:48:05,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-29 04:48:05,133 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:48:05,133 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:05,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 04:48:05,133 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:48:05,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:05,134 INFO L85 PathProgramCache]: Analyzing trace with hash 484386469, now seen corresponding path program 1 times [2023-11-29 04:48:05,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:05,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134871007] [2023-11-29 04:48:05,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:05,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:05,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:05,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:05,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:05,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134871007] [2023-11-29 04:48:05,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134871007] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:05,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:05,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:48:05,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028096554] [2023-11-29 04:48:05,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:05,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:48:05,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:05,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:48:05,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:48:05,190 INFO L87 Difference]: Start difference. First operand 1150 states and 1725 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:05,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:48:05,255 INFO L93 Difference]: Finished difference Result 2245 states and 3395 transitions. [2023-11-29 04:48:05,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:48:05,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-11-29 04:48:05,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:48:05,263 INFO L225 Difference]: With dead ends: 2245 [2023-11-29 04:48:05,263 INFO L226 Difference]: Without dead ends: 1618 [2023-11-29 04:48:05,264 INFO L412 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 [2023-11-29 04:48:05,265 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 68 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 245 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 [2023-11-29 04:48:05,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 245 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:48:05,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1618 states. [2023-11-29 04:48:05,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1618 to 1616. [2023-11-29 04:48:05,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1616 states, 1615 states have (on average 1.4904024767801858) internal successors, (2407), 1615 states have internal predecessors, (2407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:05,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 2407 transitions. [2023-11-29 04:48:05,313 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 2407 transitions. Word has length 53 [2023-11-29 04:48:05,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:48:05,313 INFO L495 AbstractCegarLoop]: Abstraction has 1616 states and 2407 transitions. [2023-11-29 04:48:05,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:05,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 2407 transitions. [2023-11-29 04:48:05,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-29 04:48:05,315 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:48:05,315 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:05,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 04:48:05,315 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:48:05,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:05,316 INFO L85 PathProgramCache]: Analyzing trace with hash -573145706, now seen corresponding path program 1 times [2023-11-29 04:48:05,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:05,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561842291] [2023-11-29 04:48:05,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:05,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:05,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:05,438 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 04:48:05,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:05,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561842291] [2023-11-29 04:48:05,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561842291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:05,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:05,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:48:05,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656380482] [2023-11-29 04:48:05,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:05,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:48:05,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:05,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:48:05,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:48:05,440 INFO L87 Difference]: Start difference. First operand 1616 states and 2407 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 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) [2023-11-29 04:48:05,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:48:05,621 INFO L93 Difference]: Finished difference Result 4554 states and 6888 transitions. [2023-11-29 04:48:05,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:48:05,622 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 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 74 [2023-11-29 04:48:05,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:48:05,644 INFO L225 Difference]: With dead ends: 4554 [2023-11-29 04:48:05,644 INFO L226 Difference]: Without dead ends: 3752 [2023-11-29 04:48:05,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:48:05,646 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 549 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:48:05,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 570 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:48:05,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3752 states. [2023-11-29 04:48:05,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3752 to 2400. [2023-11-29 04:48:05,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2400 states, 2399 states have (on average 1.491871613172155) internal successors, (3579), 2399 states have internal predecessors, (3579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:05,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2400 states to 2400 states and 3579 transitions. [2023-11-29 04:48:05,779 INFO L78 Accepts]: Start accepts. Automaton has 2400 states and 3579 transitions. Word has length 74 [2023-11-29 04:48:05,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:48:05,780 INFO L495 AbstractCegarLoop]: Abstraction has 2400 states and 3579 transitions. [2023-11-29 04:48:05,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 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) [2023-11-29 04:48:05,780 INFO L276 IsEmpty]: Start isEmpty. Operand 2400 states and 3579 transitions. [2023-11-29 04:48:05,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-29 04:48:05,782 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:48:05,782 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:05,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 04:48:05,782 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:48:05,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:05,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1433669481, now seen corresponding path program 1 times [2023-11-29 04:48:05,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:05,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819021945] [2023-11-29 04:48:05,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:05,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:05,929 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 04:48:05,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:05,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819021945] [2023-11-29 04:48:05,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819021945] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:05,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:05,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:48:05,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982571648] [2023-11-29 04:48:05,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:05,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:48:05,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:05,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:48:05,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:48:05,931 INFO L87 Difference]: Start difference. First operand 2400 states and 3579 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:06,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:48:06,146 INFO L93 Difference]: Finished difference Result 5338 states and 8060 transitions. [2023-11-29 04:48:06,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:48:06,147 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-11-29 04:48:06,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:48:06,171 INFO L225 Difference]: With dead ends: 5338 [2023-11-29 04:48:06,172 INFO L226 Difference]: Without dead ends: 4536 [2023-11-29 04:48:06,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:48:06,174 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 491 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:48:06,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 632 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:48:06,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4536 states. [2023-11-29 04:48:06,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4536 to 3184. [2023-11-29 04:48:06,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3184 states, 3183 states have (on average 1.4926170279610431) internal successors, (4751), 3183 states have internal predecessors, (4751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:06,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 4751 transitions. [2023-11-29 04:48:06,339 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 4751 transitions. Word has length 74 [2023-11-29 04:48:06,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:48:06,339 INFO L495 AbstractCegarLoop]: Abstraction has 3184 states and 4751 transitions. [2023-11-29 04:48:06,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:06,339 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 4751 transitions. [2023-11-29 04:48:06,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-29 04:48:06,341 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:48:06,341 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:06,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 04:48:06,342 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:48:06,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:06,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1615996489, now seen corresponding path program 1 times [2023-11-29 04:48:06,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:06,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630845891] [2023-11-29 04:48:06,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:06,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:06,480 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 04:48:06,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:06,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630845891] [2023-11-29 04:48:06,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630845891] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:06,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:06,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:48:06,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612974951] [2023-11-29 04:48:06,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:06,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:48:06,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:06,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:48:06,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:48:06,482 INFO L87 Difference]: Start difference. First operand 3184 states and 4751 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:06,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:48:06,730 INFO L93 Difference]: Finished difference Result 6122 states and 9232 transitions. [2023-11-29 04:48:06,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:48:06,731 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-11-29 04:48:06,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:48:06,760 INFO L225 Difference]: With dead ends: 6122 [2023-11-29 04:48:06,760 INFO L226 Difference]: Without dead ends: 5320 [2023-11-29 04:48:06,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:48:06,763 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 531 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:48:06,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 626 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:48:06,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5320 states. [2023-11-29 04:48:06,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5320 to 3968. [2023-11-29 04:48:06,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3968 states, 3967 states have (on average 1.4930678094277792) internal successors, (5923), 3967 states have internal predecessors, (5923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:06,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3968 states to 3968 states and 5923 transitions. [2023-11-29 04:48:06,942 INFO L78 Accepts]: Start accepts. Automaton has 3968 states and 5923 transitions. Word has length 74 [2023-11-29 04:48:06,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:48:06,942 INFO L495 AbstractCegarLoop]: Abstraction has 3968 states and 5923 transitions. [2023-11-29 04:48:06,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:06,942 INFO L276 IsEmpty]: Start isEmpty. Operand 3968 states and 5923 transitions. [2023-11-29 04:48:06,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-29 04:48:06,945 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:48:06,945 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:06,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 04:48:06,945 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:48:06,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:06,946 INFO L85 PathProgramCache]: Analyzing trace with hash -2003246849, now seen corresponding path program 1 times [2023-11-29 04:48:06,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:06,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50163436] [2023-11-29 04:48:06,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:06,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:07,079 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:07,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:07,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50163436] [2023-11-29 04:48:07,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50163436] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:07,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:07,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:48:07,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737794931] [2023-11-29 04:48:07,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:07,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:48:07,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:07,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:48:07,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:48:07,082 INFO L87 Difference]: Start difference. First operand 3968 states and 5923 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:07,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:48:07,230 INFO L93 Difference]: Finished difference Result 7908 states and 11817 transitions. [2023-11-29 04:48:07,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:48:07,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-11-29 04:48:07,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:48:07,252 INFO L225 Difference]: With dead ends: 7908 [2023-11-29 04:48:07,252 INFO L226 Difference]: Without dead ends: 3970 [2023-11-29 04:48:07,256 INFO L412 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 [2023-11-29 04:48:07,257 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 55 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:48:07,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 236 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:48:07,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3970 states. [2023-11-29 04:48:07,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3970 to 3968. [2023-11-29 04:48:07,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3968 states, 3967 states have (on average 1.4779430299974792) internal successors, (5863), 3967 states have internal predecessors, (5863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:07,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3968 states to 3968 states and 5863 transitions. [2023-11-29 04:48:07,426 INFO L78 Accepts]: Start accepts. Automaton has 3968 states and 5863 transitions. Word has length 75 [2023-11-29 04:48:07,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:48:07,426 INFO L495 AbstractCegarLoop]: Abstraction has 3968 states and 5863 transitions. [2023-11-29 04:48:07,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:07,427 INFO L276 IsEmpty]: Start isEmpty. Operand 3968 states and 5863 transitions. [2023-11-29 04:48:07,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-29 04:48:07,428 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:48:07,428 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:07,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 04:48:07,428 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:48:07,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:07,429 INFO L85 PathProgramCache]: Analyzing trace with hash 120108448, now seen corresponding path program 1 times [2023-11-29 04:48:07,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:07,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509162526] [2023-11-29 04:48:07,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:07,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:07,545 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:07,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:07,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509162526] [2023-11-29 04:48:07,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509162526] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:07,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:07,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:48:07,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684909454] [2023-11-29 04:48:07,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:07,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:48:07,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:07,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:48:07,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:48:07,547 INFO L87 Difference]: Start difference. First operand 3968 states and 5863 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:07,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:48:07,647 INFO L93 Difference]: Finished difference Result 5940 states and 8781 transitions. [2023-11-29 04:48:07,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:48:07,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-11-29 04:48:07,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:48:07,659 INFO L225 Difference]: With dead ends: 5940 [2023-11-29 04:48:07,659 INFO L226 Difference]: Without dead ends: 2002 [2023-11-29 04:48:07,663 INFO L412 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 [2023-11-29 04:48:07,663 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 49 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:48:07,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 217 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:48:07,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2023-11-29 04:48:07,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 2000. [2023-11-29 04:48:07,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2000 states, 1999 states have (on average 1.4592296148074038) internal successors, (2917), 1999 states have internal predecessors, (2917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:07,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2000 states to 2000 states and 2917 transitions. [2023-11-29 04:48:07,746 INFO L78 Accepts]: Start accepts. Automaton has 2000 states and 2917 transitions. Word has length 75 [2023-11-29 04:48:07,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:48:07,746 INFO L495 AbstractCegarLoop]: Abstraction has 2000 states and 2917 transitions. [2023-11-29 04:48:07,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:07,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2000 states and 2917 transitions. [2023-11-29 04:48:07,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-29 04:48:07,748 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:48:07,748 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:07,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 04:48:07,748 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:48:07,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:07,749 INFO L85 PathProgramCache]: Analyzing trace with hash 626393793, now seen corresponding path program 1 times [2023-11-29 04:48:07,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:07,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106406394] [2023-11-29 04:48:07,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:07,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:07,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:10,203 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:10,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:10,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106406394] [2023-11-29 04:48:10,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106406394] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:48:10,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666589941] [2023-11-29 04:48:10,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:10,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:10,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:10,207 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:10,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:48:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:10,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 04:48:10,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:10,538 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:48:10,538 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:48:10,723 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:48:10,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666589941] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:48:10,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:48:10,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 16 [2023-11-29 04:48:10,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338616406] [2023-11-29 04:48:10,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:48:10,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 04:48:10,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:10,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 04:48:10,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-11-29 04:48:10,726 INFO L87 Difference]: Start difference. First operand 2000 states and 2917 transitions. Second operand has 16 states, 16 states have (on average 13.375) internal successors, (214), 16 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:15,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:48:15,108 INFO L93 Difference]: Finished difference Result 18122 states and 25986 transitions. [2023-11-29 04:48:15,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-11-29 04:48:15,108 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.375) internal successors, (214), 16 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-11-29 04:48:15,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:48:15,137 INFO L225 Difference]: With dead ends: 18122 [2023-11-29 04:48:15,137 INFO L226 Difference]: Without dead ends: 16760 [2023-11-29 04:48:15,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1856 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=965, Invalid=4585, Unknown=0, NotChecked=0, Total=5550 [2023-11-29 04:48:15,143 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 3662 mSDsluCounter, 1118 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3662 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:48:15,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3662 Valid, 1271 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 04:48:15,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16760 states. [2023-11-29 04:48:15,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16760 to 13244. [2023-11-29 04:48:15,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13244 states, 13243 states have (on average 1.4253567922676131) internal successors, (18876), 13243 states have internal predecessors, (18876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:15,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13244 states to 13244 states and 18876 transitions. [2023-11-29 04:48:15,519 INFO L78 Accepts]: Start accepts. Automaton has 13244 states and 18876 transitions. Word has length 75 [2023-11-29 04:48:15,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:48:15,519 INFO L495 AbstractCegarLoop]: Abstraction has 13244 states and 18876 transitions. [2023-11-29 04:48:15,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.375) internal successors, (214), 16 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:15,519 INFO L276 IsEmpty]: Start isEmpty. Operand 13244 states and 18876 transitions. [2023-11-29 04:48:15,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-29 04:48:15,521 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:48:15,521 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:15,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:48:15,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 04:48:15,722 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:48:15,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:15,723 INFO L85 PathProgramCache]: Analyzing trace with hash 2112085428, now seen corresponding path program 1 times [2023-11-29 04:48:15,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:15,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402287638] [2023-11-29 04:48:15,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:15,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:15,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:15,854 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 04:48:15,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:15,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402287638] [2023-11-29 04:48:15,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402287638] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:15,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:15,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:48:15,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389604990] [2023-11-29 04:48:15,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:15,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:48:15,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:15,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:48:15,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:48:15,856 INFO L87 Difference]: Start difference. First operand 13244 states and 18876 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:16,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:48:16,401 INFO L93 Difference]: Finished difference Result 22834 states and 32786 transitions. [2023-11-29 04:48:16,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:48:16,402 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-11-29 04:48:16,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:48:16,441 INFO L225 Difference]: With dead ends: 22834 [2023-11-29 04:48:16,441 INFO L226 Difference]: Without dead ends: 20648 [2023-11-29 04:48:16,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:48:16,448 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 454 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:48:16,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 627 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:48:16,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20648 states. [2023-11-29 04:48:16,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20648 to 15512. [2023-11-29 04:48:16,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15512 states, 15511 states have (on average 1.4241506027980144) internal successors, (22090), 15511 states have internal predecessors, (22090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:16,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15512 states to 15512 states and 22090 transitions. [2023-11-29 04:48:16,895 INFO L78 Accepts]: Start accepts. Automaton has 15512 states and 22090 transitions. Word has length 76 [2023-11-29 04:48:16,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:48:16,895 INFO L495 AbstractCegarLoop]: Abstraction has 15512 states and 22090 transitions. [2023-11-29 04:48:16,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:16,895 INFO L276 IsEmpty]: Start isEmpty. Operand 15512 states and 22090 transitions. [2023-11-29 04:48:16,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-29 04:48:16,896 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:48:16,897 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:16,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 04:48:16,897 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:48:16,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:16,897 INFO L85 PathProgramCache]: Analyzing trace with hash 80183665, now seen corresponding path program 1 times [2023-11-29 04:48:16,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:16,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52120850] [2023-11-29 04:48:16,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:16,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:16,959 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:16,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:16,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52120850] [2023-11-29 04:48:16,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52120850] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:16,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:16,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:48:16,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850187933] [2023-11-29 04:48:16,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:16,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:48:16,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:16,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:48:16,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:48:16,961 INFO L87 Difference]: Start difference. First operand 15512 states and 22090 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:17,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:48:17,180 INFO L93 Difference]: Finished difference Result 22752 states and 32272 transitions. [2023-11-29 04:48:17,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:48:17,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-11-29 04:48:17,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:48:17,192 INFO L225 Difference]: With dead ends: 22752 [2023-11-29 04:48:17,193 INFO L226 Difference]: Without dead ends: 7270 [2023-11-29 04:48:17,206 INFO L412 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 [2023-11-29 04:48:17,207 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 37 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:48:17,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 204 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:48:17,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7270 states. [2023-11-29 04:48:17,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7270 to 7268. [2023-11-29 04:48:17,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7268 states, 7267 states have (on average 1.3853034264483282) internal successors, (10067), 7267 states have internal predecessors, (10067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:17,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7268 states to 7268 states and 10067 transitions. [2023-11-29 04:48:17,435 INFO L78 Accepts]: Start accepts. Automaton has 7268 states and 10067 transitions. Word has length 77 [2023-11-29 04:48:17,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:48:17,435 INFO L495 AbstractCegarLoop]: Abstraction has 7268 states and 10067 transitions. [2023-11-29 04:48:17,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:17,436 INFO L276 IsEmpty]: Start isEmpty. Operand 7268 states and 10067 transitions. [2023-11-29 04:48:17,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-29 04:48:17,437 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:48:17,437 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:17,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 04:48:17,438 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:48:17,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:17,438 INFO L85 PathProgramCache]: Analyzing trace with hash 464528149, now seen corresponding path program 1 times [2023-11-29 04:48:17,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:17,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214079652] [2023-11-29 04:48:17,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:17,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:17,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:19,905 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:19,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:19,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214079652] [2023-11-29 04:48:19,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214079652] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:48:19,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485048278] [2023-11-29 04:48:19,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:19,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:19,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:19,907 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:19,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:48:20,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:20,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 04:48:20,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:20,827 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:20,827 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:48:22,247 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:22,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485048278] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:48:22,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:48:22,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2023-11-29 04:48:22,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597618944] [2023-11-29 04:48:22,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:48:22,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 04:48:22,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:22,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 04:48:22,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=714, Unknown=0, NotChecked=0, Total=870 [2023-11-29 04:48:22,250 INFO L87 Difference]: Start difference. First operand 7268 states and 10067 transitions. Second operand has 30 states, 30 states have (on average 7.366666666666666) internal successors, (221), 29 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:23,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:48:23,717 INFO L93 Difference]: Finished difference Result 29885 states and 40879 transitions. [2023-11-29 04:48:23,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 04:48:23,718 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 7.366666666666666) internal successors, (221), 29 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2023-11-29 04:48:23,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:48:23,744 INFO L225 Difference]: With dead ends: 29885 [2023-11-29 04:48:23,744 INFO L226 Difference]: Without dead ends: 22664 [2023-11-29 04:48:23,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=564, Invalid=1986, Unknown=0, NotChecked=0, Total=2550 [2023-11-29 04:48:23,754 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 1648 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1648 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:48:23,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1648 Valid, 851 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 04:48:23,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22664 states. [2023-11-29 04:48:24,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22664 to 16791. [2023-11-29 04:48:24,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16791 states, 16790 states have (on average 1.3699225729600952) internal successors, (23001), 16790 states have internal predecessors, (23001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:24,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16791 states to 16791 states and 23001 transitions. [2023-11-29 04:48:24,183 INFO L78 Accepts]: Start accepts. Automaton has 16791 states and 23001 transitions. Word has length 79 [2023-11-29 04:48:24,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:48:24,184 INFO L495 AbstractCegarLoop]: Abstraction has 16791 states and 23001 transitions. [2023-11-29 04:48:24,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 7.366666666666666) internal successors, (221), 29 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:24,184 INFO L276 IsEmpty]: Start isEmpty. Operand 16791 states and 23001 transitions. [2023-11-29 04:48:24,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-29 04:48:24,186 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:48:24,186 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:24,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 04:48:24,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 04:48:24,387 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:48:24,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:24,387 INFO L85 PathProgramCache]: Analyzing trace with hash 851323188, now seen corresponding path program 1 times [2023-11-29 04:48:24,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:24,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410735537] [2023-11-29 04:48:24,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:24,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:24,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:24,449 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:24,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:24,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410735537] [2023-11-29 04:48:24,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410735537] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:24,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:24,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:48:24,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702363241] [2023-11-29 04:48:24,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:24,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:48:24,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:24,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:48:24,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:48:24,451 INFO L87 Difference]: Start difference. First operand 16791 states and 23001 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:24,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:48:24,628 INFO L93 Difference]: Finished difference Result 25099 states and 34339 transitions. [2023-11-29 04:48:24,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:48:24,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2023-11-29 04:48:24,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:48:24,641 INFO L225 Difference]: With dead ends: 25099 [2023-11-29 04:48:24,641 INFO L226 Difference]: Without dead ends: 9714 [2023-11-29 04:48:24,652 INFO L412 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 [2023-11-29 04:48:24,652 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 31 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:48:24,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 179 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:48:24,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9714 states. [2023-11-29 04:48:24,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9714 to 9712. [2023-11-29 04:48:24,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9712 states, 9711 states have (on average 1.341674389867161) internal successors, (13029), 9711 states have internal predecessors, (13029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:24,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9712 states to 9712 states and 13029 transitions. [2023-11-29 04:48:24,903 INFO L78 Accepts]: Start accepts. Automaton has 9712 states and 13029 transitions. Word has length 79 [2023-11-29 04:48:24,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:48:24,903 INFO L495 AbstractCegarLoop]: Abstraction has 9712 states and 13029 transitions. [2023-11-29 04:48:24,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:24,903 INFO L276 IsEmpty]: Start isEmpty. Operand 9712 states and 13029 transitions. [2023-11-29 04:48:24,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-29 04:48:24,905 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:48:24,905 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:24,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 04:48:24,906 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:48:24,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:24,906 INFO L85 PathProgramCache]: Analyzing trace with hash -159971565, now seen corresponding path program 1 times [2023-11-29 04:48:24,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:24,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698789333] [2023-11-29 04:48:24,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:24,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:24,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:25,989 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:25,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:25,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698789333] [2023-11-29 04:48:25,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698789333] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:48:25,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304567828] [2023-11-29 04:48:25,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:25,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:25,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:48:25,991 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:48:25,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 04:48:26,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:26,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 04:48:26,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:48:26,665 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:26,665 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:48:27,768 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:27,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304567828] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:48:27,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:48:27,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-11-29 04:48:27,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978324815] [2023-11-29 04:48:27,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:48:27,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 04:48:27,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:27,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 04:48:27,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=854, Unknown=0, NotChecked=0, Total=992 [2023-11-29 04:48:27,771 INFO L87 Difference]: Start difference. First operand 9712 states and 13029 transitions. Second operand has 32 states, 32 states have (on average 6.46875) internal successors, (207), 31 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:36,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:48:36,737 INFO L93 Difference]: Finished difference Result 85299 states and 113453 transitions. [2023-11-29 04:48:36,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2023-11-29 04:48:36,738 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.46875) internal successors, (207), 31 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2023-11-29 04:48:36,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:48:36,815 INFO L225 Difference]: With dead ends: 85299 [2023-11-29 04:48:36,815 INFO L226 Difference]: Without dead ends: 75619 [2023-11-29 04:48:36,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6296 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=2701, Invalid=15389, Unknown=0, NotChecked=0, Total=18090 [2023-11-29 04:48:36,834 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 3662 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3662 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 1578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:48:36,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3662 Valid, 1737 Invalid, 1578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1426 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 04:48:36,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75619 states. [2023-11-29 04:48:38,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75619 to 53383. [2023-11-29 04:48:38,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53383 states, 53382 states have (on average 1.3388220748566932) internal successors, (71469), 53382 states have internal predecessors, (71469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:38,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53383 states to 53383 states and 71469 transitions. [2023-11-29 04:48:38,402 INFO L78 Accepts]: Start accepts. Automaton has 53383 states and 71469 transitions. Word has length 79 [2023-11-29 04:48:38,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:48:38,402 INFO L495 AbstractCegarLoop]: Abstraction has 53383 states and 71469 transitions. [2023-11-29 04:48:38,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.46875) internal successors, (207), 31 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:38,403 INFO L276 IsEmpty]: Start isEmpty. Operand 53383 states and 71469 transitions. [2023-11-29 04:48:38,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-29 04:48:38,405 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:48:38,405 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:38,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 04:48:38,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:48:38,606 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:48:38,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:38,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1808943462, now seen corresponding path program 1 times [2023-11-29 04:48:38,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:38,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582608760] [2023-11-29 04:48:38,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:38,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:38,652 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:38,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:38,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582608760] [2023-11-29 04:48:38,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582608760] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:38,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:38,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:48:38,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338067256] [2023-11-29 04:48:38,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:38,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:48:38,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:38,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:48:38,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:48:38,654 INFO L87 Difference]: Start difference. First operand 53383 states and 71469 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:40,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:48:40,237 INFO L93 Difference]: Finished difference Result 112424 states and 150508 transitions. [2023-11-29 04:48:40,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:48:40,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-11-29 04:48:40,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:48:40,302 INFO L225 Difference]: With dead ends: 112424 [2023-11-29 04:48:40,302 INFO L226 Difference]: Without dead ends: 62559 [2023-11-29 04:48:40,325 INFO L412 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 [2023-11-29 04:48:40,325 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 54 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:48:40,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 209 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:48:40,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62559 states. [2023-11-29 04:48:42,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62559 to 62557. [2023-11-29 04:48:42,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62557 states, 62556 states have (on average 1.323965726708869) internal successors, (82822), 62556 states have internal predecessors, (82822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:42,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62557 states to 62557 states and 82822 transitions. [2023-11-29 04:48:42,426 INFO L78 Accepts]: Start accepts. Automaton has 62557 states and 82822 transitions. Word has length 80 [2023-11-29 04:48:42,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:48:42,427 INFO L495 AbstractCegarLoop]: Abstraction has 62557 states and 82822 transitions. [2023-11-29 04:48:42,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:42,427 INFO L276 IsEmpty]: Start isEmpty. Operand 62557 states and 82822 transitions. [2023-11-29 04:48:42,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-29 04:48:42,431 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:48:42,432 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:42,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 04:48:42,432 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:48:42,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:42,432 INFO L85 PathProgramCache]: Analyzing trace with hash 2142364890, now seen corresponding path program 1 times [2023-11-29 04:48:42,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:42,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928766321] [2023-11-29 04:48:42,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:42,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:42,482 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:42,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:42,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928766321] [2023-11-29 04:48:42,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928766321] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:42,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:42,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:48:42,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019626204] [2023-11-29 04:48:42,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:42,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:48:42,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:42,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:48:42,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:48:42,484 INFO L87 Difference]: Start difference. First operand 62557 states and 82822 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:45,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:48:45,067 INFO L93 Difference]: Finished difference Result 170622 states and 224472 transitions. [2023-11-29 04:48:45,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:48:45,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-11-29 04:48:45,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:48:45,184 INFO L225 Difference]: With dead ends: 170622 [2023-11-29 04:48:45,184 INFO L226 Difference]: Without dead ends: 110390 [2023-11-29 04:48:45,294 INFO L412 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 [2023-11-29 04:48:45,295 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 48 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:48:45,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 227 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:48:45,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110390 states. [2023-11-29 04:48:48,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110390 to 110388. [2023-11-29 04:48:48,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110388 states, 110387 states have (on average 1.2936034134454237) internal successors, (142797), 110387 states have internal predecessors, (142797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:49,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110388 states to 110388 states and 142797 transitions. [2023-11-29 04:48:49,070 INFO L78 Accepts]: Start accepts. Automaton has 110388 states and 142797 transitions. Word has length 80 [2023-11-29 04:48:49,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:48:49,070 INFO L495 AbstractCegarLoop]: Abstraction has 110388 states and 142797 transitions. [2023-11-29 04:48:49,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:49,071 INFO L276 IsEmpty]: Start isEmpty. Operand 110388 states and 142797 transitions. [2023-11-29 04:48:49,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-29 04:48:49,075 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:48:49,075 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:49,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 04:48:49,075 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:48:49,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:49,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1813865286, now seen corresponding path program 1 times [2023-11-29 04:48:49,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:49,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118431972] [2023-11-29 04:48:49,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:49,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:49,112 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:49,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:49,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118431972] [2023-11-29 04:48:49,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118431972] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:49,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:49,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:48:49,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389362609] [2023-11-29 04:48:49,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:49,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:48:49,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:49,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:48:49,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:48:49,114 INFO L87 Difference]: Start difference. First operand 110388 states and 142797 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:53,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:48:53,257 INFO L93 Difference]: Finished difference Result 273161 states and 351586 transitions. [2023-11-29 04:48:53,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:48:53,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-11-29 04:48:53,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:48:53,439 INFO L225 Difference]: With dead ends: 273161 [2023-11-29 04:48:53,439 INFO L226 Difference]: Without dead ends: 165517 [2023-11-29 04:48:53,472 INFO L412 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 [2023-11-29 04:48:53,473 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 51 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:48:53,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 226 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:48:53,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165517 states. [2023-11-29 04:48:58,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165517 to 165515. [2023-11-29 04:48:58,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165515 states, 165514 states have (on average 1.2642374663170488) internal successors, (209249), 165514 states have internal predecessors, (209249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:59,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165515 states to 165515 states and 209249 transitions. [2023-11-29 04:48:59,110 INFO L78 Accepts]: Start accepts. Automaton has 165515 states and 209249 transitions. Word has length 80 [2023-11-29 04:48:59,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:48:59,110 INFO L495 AbstractCegarLoop]: Abstraction has 165515 states and 209249 transitions. [2023-11-29 04:48:59,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:48:59,110 INFO L276 IsEmpty]: Start isEmpty. Operand 165515 states and 209249 transitions. [2023-11-29 04:48:59,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-29 04:48:59,116 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:48:59,116 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:48:59,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 04:48:59,116 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:48:59,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:48:59,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1524817978, now seen corresponding path program 1 times [2023-11-29 04:48:59,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:48:59,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695954331] [2023-11-29 04:48:59,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:59,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:48:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:48:59,160 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:48:59,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:48:59,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695954331] [2023-11-29 04:48:59,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695954331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:48:59,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:48:59,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:48:59,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009397961] [2023-11-29 04:48:59,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:48:59,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:48:59,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:48:59,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:48:59,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:48:59,162 INFO L87 Difference]: Start difference. First operand 165515 states and 209249 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:05,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:49:05,447 INFO L93 Difference]: Finished difference Result 358105 states and 450836 transitions. [2023-11-29 04:49:05,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:49:05,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-11-29 04:49:05,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:49:05,703 INFO L225 Difference]: With dead ends: 358105 [2023-11-29 04:49:05,703 INFO L226 Difference]: Without dead ends: 208582 [2023-11-29 04:49:05,744 INFO L412 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 [2023-11-29 04:49:05,745 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 51 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:49:05,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 227 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:49:05,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208582 states. [2023-11-29 04:49:12,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208582 to 208580. [2023-11-29 04:49:12,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208580 states, 208579 states have (on average 1.2372194708000326) internal successors, (258058), 208579 states have internal predecessors, (258058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:13,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208580 states to 208580 states and 258058 transitions. [2023-11-29 04:49:13,276 INFO L78 Accepts]: Start accepts. Automaton has 208580 states and 258058 transitions. Word has length 80 [2023-11-29 04:49:13,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:49:13,276 INFO L495 AbstractCegarLoop]: Abstraction has 208580 states and 258058 transitions. [2023-11-29 04:49:13,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:13,277 INFO L276 IsEmpty]: Start isEmpty. Operand 208580 states and 258058 transitions. [2023-11-29 04:49:13,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-29 04:49:13,285 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:49:13,285 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:49:13,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 04:49:13,286 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:49:13,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:13,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1026117690, now seen corresponding path program 1 times [2023-11-29 04:49:13,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:13,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770001176] [2023-11-29 04:49:13,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:13,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:13,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:13,532 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:13,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:13,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770001176] [2023-11-29 04:49:13,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770001176] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:49:13,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890580163] [2023-11-29 04:49:13,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:13,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:49:13,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:49:13,534 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:49:13,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 04:49:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:13,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 04:49:13,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:49:14,430 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:14,430 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:49:15,247 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:15,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890580163] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:49:15,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:49:15,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 26 [2023-11-29 04:49:15,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958832485] [2023-11-29 04:49:15,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:49:15,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 04:49:15,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:15,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 04:49:15,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=562, Unknown=0, NotChecked=0, Total=702 [2023-11-29 04:49:15,249 INFO L87 Difference]: Start difference. First operand 208580 states and 258058 transitions. Second operand has 27 states, 27 states have (on average 8.0) internal successors, (216), 26 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:21,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:49:21,694 INFO L93 Difference]: Finished difference Result 416731 states and 516238 transitions. [2023-11-29 04:49:21,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 04:49:21,695 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.0) internal successors, (216), 26 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-11-29 04:49:21,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:49:21,932 INFO L225 Difference]: With dead ends: 416731 [2023-11-29 04:49:21,932 INFO L226 Difference]: Without dead ends: 210702 [2023-11-29 04:49:21,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=446, Invalid=1446, Unknown=0, NotChecked=0, Total=1892 [2023-11-29 04:49:21,996 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 1100 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:49:21,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1100 Valid, 792 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 04:49:22,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210702 states. [2023-11-29 04:49:27,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210702 to 135886. [2023-11-29 04:49:27,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135886 states, 135885 states have (on average 1.2381499061706591) internal successors, (168246), 135885 states have internal predecessors, (168246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:27,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135886 states to 135886 states and 168246 transitions. [2023-11-29 04:49:27,276 INFO L78 Accepts]: Start accepts. Automaton has 135886 states and 168246 transitions. Word has length 80 [2023-11-29 04:49:27,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:49:27,276 INFO L495 AbstractCegarLoop]: Abstraction has 135886 states and 168246 transitions. [2023-11-29 04:49:27,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.0) internal successors, (216), 26 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:27,277 INFO L276 IsEmpty]: Start isEmpty. Operand 135886 states and 168246 transitions. [2023-11-29 04:49:27,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-29 04:49:27,285 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:49:27,285 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:49:27,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 04:49:27,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 04:49:27,486 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:49:27,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:27,486 INFO L85 PathProgramCache]: Analyzing trace with hash -954116486, now seen corresponding path program 1 times [2023-11-29 04:49:27,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:27,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903679959] [2023-11-29 04:49:27,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:27,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:27,526 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:27,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:27,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903679959] [2023-11-29 04:49:27,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903679959] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:49:27,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:49:27,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:49:27,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641822052] [2023-11-29 04:49:27,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:49:27,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:49:27,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:27,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:49:27,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:49:27,528 INFO L87 Difference]: Start difference. First operand 135886 states and 168246 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:31,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:49:31,718 INFO L93 Difference]: Finished difference Result 212498 states and 262028 transitions. [2023-11-29 04:49:31,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:49:31,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-11-29 04:49:31,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:49:31,851 INFO L225 Difference]: With dead ends: 212498 [2023-11-29 04:49:31,851 INFO L226 Difference]: Without dead ends: 132368 [2023-11-29 04:49:31,873 INFO L412 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 [2023-11-29 04:49:31,874 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 48 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:49:31,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 276 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:49:31,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132368 states. [2023-11-29 04:49:36,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132368 to 128003. [2023-11-29 04:49:36,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128003 states, 128002 states have (on average 1.2214496648489868) internal successors, (156348), 128002 states have internal predecessors, (156348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:37,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128003 states to 128003 states and 156348 transitions. [2023-11-29 04:49:37,186 INFO L78 Accepts]: Start accepts. Automaton has 128003 states and 156348 transitions. Word has length 80 [2023-11-29 04:49:37,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:49:37,186 INFO L495 AbstractCegarLoop]: Abstraction has 128003 states and 156348 transitions. [2023-11-29 04:49:37,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:37,186 INFO L276 IsEmpty]: Start isEmpty. Operand 128003 states and 156348 transitions. [2023-11-29 04:49:37,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-29 04:49:37,193 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:49:37,193 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:49:37,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 04:49:37,193 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:49:37,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:37,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1593060840, now seen corresponding path program 1 times [2023-11-29 04:49:37,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:37,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609720392] [2023-11-29 04:49:37,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:37,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:37,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:37,236 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:37,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:37,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609720392] [2023-11-29 04:49:37,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609720392] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:49:37,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:49:37,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:49:37,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704417660] [2023-11-29 04:49:37,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:49:37,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:49:37,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:37,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:49:37,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:49:37,238 INFO L87 Difference]: Start difference. First operand 128003 states and 156348 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:41,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:49:41,296 INFO L93 Difference]: Finished difference Result 197909 states and 240895 transitions. [2023-11-29 04:49:41,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:49:41,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-11-29 04:49:41,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:49:41,397 INFO L225 Difference]: With dead ends: 197909 [2023-11-29 04:49:41,398 INFO L226 Difference]: Without dead ends: 121788 [2023-11-29 04:49:41,417 INFO L412 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 [2023-11-29 04:49:41,417 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 51 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:49:41,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 268 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:49:41,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121788 states. [2023-11-29 04:49:45,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121788 to 112355. [2023-11-29 04:49:45,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112355 states, 112354 states have (on average 1.205671360165192) internal successors, (135462), 112354 states have internal predecessors, (135462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:45,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112355 states to 112355 states and 135462 transitions. [2023-11-29 04:49:45,960 INFO L78 Accepts]: Start accepts. Automaton has 112355 states and 135462 transitions. Word has length 80 [2023-11-29 04:49:45,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:49:45,960 INFO L495 AbstractCegarLoop]: Abstraction has 112355 states and 135462 transitions. [2023-11-29 04:49:45,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:45,961 INFO L276 IsEmpty]: Start isEmpty. Operand 112355 states and 135462 transitions. [2023-11-29 04:49:45,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-29 04:49:45,968 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:49:45,968 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:49:45,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-29 04:49:45,968 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:49:45,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:45,969 INFO L85 PathProgramCache]: Analyzing trace with hash 101243898, now seen corresponding path program 1 times [2023-11-29 04:49:45,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:45,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230532367] [2023-11-29 04:49:45,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:45,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:45,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:46,289 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:46,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:46,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230532367] [2023-11-29 04:49:46,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230532367] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:49:46,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601242837] [2023-11-29 04:49:46,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:46,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:49:46,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:49:46,290 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:49:46,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 04:49:46,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:46,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 04:49:46,375 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:49:47,860 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:47,861 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:49:50,185 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:50,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601242837] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:49:50,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:49:50,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 15, 16] total 37 [2023-11-29 04:49:50,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903037184] [2023-11-29 04:49:50,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:49:50,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-29 04:49:50,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:50,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-29 04:49:50,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1169, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 04:49:50,187 INFO L87 Difference]: Start difference. First operand 112355 states and 135462 transitions. Second operand has 37 states, 37 states have (on average 6.162162162162162) internal successors, (228), 37 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:15,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:50:15,341 INFO L93 Difference]: Finished difference Result 358767 states and 431382 transitions. [2023-11-29 04:50:15,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2023-11-29 04:50:15,342 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 6.162162162162162) internal successors, (228), 37 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-11-29 04:50:15,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:50:15,570 INFO L225 Difference]: With dead ends: 358767 [2023-11-29 04:50:15,570 INFO L226 Difference]: Without dead ends: 257754 [2023-11-29 04:50:15,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10055 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=4691, Invalid=23701, Unknown=0, NotChecked=0, Total=28392 [2023-11-29 04:50:15,610 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 4820 mSDsluCounter, 2492 mSDsCounter, 0 mSdLazyCounter, 2256 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4820 SdHoareTripleChecker+Valid, 2625 SdHoareTripleChecker+Invalid, 2439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 2256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:50:15,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4820 Valid, 2625 Invalid, 2439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 2256 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 04:50:15,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257754 states. [2023-11-29 04:50:25,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257754 to 220047. [2023-11-29 04:50:25,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220047 states, 220046 states have (on average 1.199617352735337) internal successors, (263971), 220046 states have internal predecessors, (263971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:26,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220047 states to 220047 states and 263971 transitions. [2023-11-29 04:50:26,456 INFO L78 Accepts]: Start accepts. Automaton has 220047 states and 263971 transitions. Word has length 80 [2023-11-29 04:50:26,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:50:26,456 INFO L495 AbstractCegarLoop]: Abstraction has 220047 states and 263971 transitions. [2023-11-29 04:50:26,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 6.162162162162162) internal successors, (228), 37 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:26,456 INFO L276 IsEmpty]: Start isEmpty. Operand 220047 states and 263971 transitions. [2023-11-29 04:50:26,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-29 04:50:26,461 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:50:26,461 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:50:26,466 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 04:50:26,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 04:50:26,662 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:50:26,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:50:26,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1615299465, now seen corresponding path program 1 times [2023-11-29 04:50:26,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:50:26,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943246759] [2023-11-29 04:50:26,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:26,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:50:26,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:27,535 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:50:27,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:50:27,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943246759] [2023-11-29 04:50:27,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943246759] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:50:27,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668063914] [2023-11-29 04:50:27,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:27,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:50:27,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:50:27,537 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:50:27,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 04:50:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:27,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 04:50:27,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:50:28,728 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:50:28,728 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:50:29,628 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:50:29,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668063914] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:50:29,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:50:29,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-11-29 04:50:29,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374799290] [2023-11-29 04:50:29,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:50:29,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 04:50:29,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:50:29,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 04:50:29,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=891, Unknown=0, NotChecked=0, Total=992 [2023-11-29 04:50:29,630 INFO L87 Difference]: Start difference. First operand 220047 states and 263971 transitions. Second operand has 32 states, 32 states have (on average 6.6875) internal successors, (214), 31 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:06,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:51:06,968 INFO L93 Difference]: Finished difference Result 665512 states and 790141 transitions. [2023-11-29 04:51:06,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2023-11-29 04:51:06,968 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.6875) internal successors, (214), 31 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2023-11-29 04:51:06,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:51:07,753 INFO L225 Difference]: With dead ends: 665512 [2023-11-29 04:51:07,753 INFO L226 Difference]: Without dead ends: 571838 [2023-11-29 04:51:07,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13234 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=5449, Invalid=29333, Unknown=0, NotChecked=0, Total=34782 [2023-11-29 04:51:07,827 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 5537 mSDsluCounter, 2429 mSDsCounter, 0 mSdLazyCounter, 2158 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5537 SdHoareTripleChecker+Valid, 2573 SdHoareTripleChecker+Invalid, 2272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 04:51:07,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5537 Valid, 2573 Invalid, 2272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2158 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 04:51:08,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571838 states. [2023-11-29 04:51:23,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571838 to 252182. [2023-11-29 04:51:23,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252182 states, 252181 states have (on average 1.1970330833805878) internal successors, (301869), 252181 states have internal predecessors, (301869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:23,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252182 states to 252182 states and 301869 transitions. [2023-11-29 04:51:23,630 INFO L78 Accepts]: Start accepts. Automaton has 252182 states and 301869 transitions. Word has length 81 [2023-11-29 04:51:23,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:51:23,631 INFO L495 AbstractCegarLoop]: Abstraction has 252182 states and 301869 transitions. [2023-11-29 04:51:23,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.6875) internal successors, (214), 31 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:23,631 INFO L276 IsEmpty]: Start isEmpty. Operand 252182 states and 301869 transitions. [2023-11-29 04:51:23,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-29 04:51:23,635 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:51:23,635 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:51:23,640 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 04:51:23,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 04:51:23,836 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:51:23,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:51:23,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1570185699, now seen corresponding path program 1 times [2023-11-29 04:51:23,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:51:23,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188882449] [2023-11-29 04:51:23,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:51:23,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:51:23,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:51:24,764 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:51:24,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:51:24,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188882449] [2023-11-29 04:51:24,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188882449] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:51:24,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995858685] [2023-11-29 04:51:24,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:51:24,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:51:24,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:51:24,766 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:51:24,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 04:51:24,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:51:24,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 04:51:24,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:51:25,683 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:51:25,683 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:51:28,272 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:51:28,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995858685] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:51:28,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:51:28,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 14] total 34 [2023-11-29 04:51:28,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993512] [2023-11-29 04:51:28,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:51:28,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 04:51:28,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:51:28,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 04:51:28,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1007, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 04:51:28,274 INFO L87 Difference]: Start difference. First operand 252182 states and 301869 transitions. Second operand has 35 states, 35 states have (on average 6.142857142857143) internal successors, (215), 34 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:52:04,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:52:04,469 INFO L93 Difference]: Finished difference Result 915584 states and 1093913 transitions. [2023-11-29 04:52:04,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-29 04:52:04,470 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 6.142857142857143) internal successors, (215), 34 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2023-11-29 04:52:04,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:52:05,363 INFO L225 Difference]: With dead ends: 915584 [2023-11-29 04:52:05,363 INFO L226 Difference]: Without dead ends: 692161 [2023-11-29 04:52:05,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 962 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1026, Invalid=3666, Unknown=0, NotChecked=0, Total=4692 [2023-11-29 04:52:05,504 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 2205 mSDsluCounter, 1708 mSDsCounter, 0 mSdLazyCounter, 1280 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2205 SdHoareTripleChecker+Valid, 1835 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 04:52:05,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2205 Valid, 1835 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1280 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 04:52:05,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692161 states. [2023-11-29 04:52:25,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692161 to 315272. [2023-11-29 04:52:25,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315272 states, 315271 states have (on average 1.1948292104253166) internal successors, (376695), 315271 states have internal predecessors, (376695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:52:25,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315272 states to 315272 states and 376695 transitions. [2023-11-29 04:52:25,814 INFO L78 Accepts]: Start accepts. Automaton has 315272 states and 376695 transitions. Word has length 81 [2023-11-29 04:52:25,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:52:25,814 INFO L495 AbstractCegarLoop]: Abstraction has 315272 states and 376695 transitions. [2023-11-29 04:52:25,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 6.142857142857143) internal successors, (215), 34 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:52:25,815 INFO L276 IsEmpty]: Start isEmpty. Operand 315272 states and 376695 transitions. [2023-11-29 04:52:25,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-29 04:52:25,819 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:52:25,819 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:52:25,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 04:52:26,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:52:26,020 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:52:26,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:52:26,021 INFO L85 PathProgramCache]: Analyzing trace with hash 349785638, now seen corresponding path program 1 times [2023-11-29 04:52:26,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:52:26,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408758566] [2023-11-29 04:52:26,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:52:26,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:52:26,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:52:26,054 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:52:26,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:52:26,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408758566] [2023-11-29 04:52:26,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408758566] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:52:26,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:52:26,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:52:26,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888236749] [2023-11-29 04:52:26,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:52:26,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:52:26,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:52:26,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:52:26,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:52:26,055 INFO L87 Difference]: Start difference. First operand 315272 states and 376695 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:52:38,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:52:38,494 INFO L93 Difference]: Finished difference Result 423178 states and 505231 transitions. [2023-11-29 04:52:38,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:52:38,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2023-11-29 04:52:38,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:52:38,745 INFO L225 Difference]: With dead ends: 423178 [2023-11-29 04:52:38,745 INFO L226 Difference]: Without dead ends: 240815 [2023-11-29 04:52:38,798 INFO L412 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 [2023-11-29 04:52:38,799 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 47 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:52:38,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 261 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:52:38,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240815 states. [2023-11-29 04:52:51,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240815 to 204786. [2023-11-29 04:52:51,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204786 states, 204785 states have (on average 1.1835632492614205) internal successors, (242376), 204785 states have internal predecessors, (242376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:52:51,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204786 states to 204786 states and 242376 transitions. [2023-11-29 04:52:51,711 INFO L78 Accepts]: Start accepts. Automaton has 204786 states and 242376 transitions. Word has length 82 [2023-11-29 04:52:51,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:52:51,712 INFO L495 AbstractCegarLoop]: Abstraction has 204786 states and 242376 transitions. [2023-11-29 04:52:51,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:52:51,712 INFO L276 IsEmpty]: Start isEmpty. Operand 204786 states and 242376 transitions. [2023-11-29 04:52:51,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-29 04:52:51,740 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:52:51,741 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:52:51,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-29 04:52:51,741 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:52:51,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:52:51,741 INFO L85 PathProgramCache]: Analyzing trace with hash -75504314, now seen corresponding path program 1 times [2023-11-29 04:52:51,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:52:51,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904457690] [2023-11-29 04:52:51,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:52:51,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:52:51,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:52:51,785 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 04:52:51,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:52:51,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904457690] [2023-11-29 04:52:51,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904457690] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:52:51,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:52:51,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:52:51,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528269925] [2023-11-29 04:52:51,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:52:51,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:52:51,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:52:51,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:52:51,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:52:51,787 INFO L87 Difference]: Start difference. First operand 204786 states and 242376 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:53:01,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:53:01,018 INFO L93 Difference]: Finished difference Result 278149 states and 328819 transitions. [2023-11-29 04:53:01,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:53:01,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 131 [2023-11-29 04:53:01,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:53:01,155 INFO L225 Difference]: With dead ends: 278149 [2023-11-29 04:53:01,155 INFO L226 Difference]: Without dead ends: 150759 [2023-11-29 04:53:01,184 INFO L412 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 [2023-11-29 04:53:01,185 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 36 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:53:01,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 265 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:53:01,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150759 states. [2023-11-29 04:53:10,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150759 to 143174. [2023-11-29 04:53:10,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143174 states, 143173 states have (on average 1.169550124674345) internal successors, (167448), 143173 states have internal predecessors, (167448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:53:10,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143174 states to 143174 states and 167448 transitions. [2023-11-29 04:53:10,451 INFO L78 Accepts]: Start accepts. Automaton has 143174 states and 167448 transitions. Word has length 131 [2023-11-29 04:53:10,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:53:10,451 INFO L495 AbstractCegarLoop]: Abstraction has 143174 states and 167448 transitions. [2023-11-29 04:53:10,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:53:10,451 INFO L276 IsEmpty]: Start isEmpty. Operand 143174 states and 167448 transitions. [2023-11-29 04:53:10,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-29 04:53:10,470 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:53:10,471 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:53:10,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-29 04:53:10,471 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:53:10,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:53:10,472 INFO L85 PathProgramCache]: Analyzing trace with hash 531209115, now seen corresponding path program 1 times [2023-11-29 04:53:10,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:53:10,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068565013] [2023-11-29 04:53:10,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:53:10,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:53:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:53:11,237 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 31 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:53:11,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:53:11,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068565013] [2023-11-29 04:53:11,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068565013] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:53:11,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424214426] [2023-11-29 04:53:11,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:53:11,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:53:11,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:53:11,239 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:53:11,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 04:53:11,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:53:11,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 04:53:11,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:53:12,204 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 25 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:53:12,204 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:53:15,302 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 14 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:53:15,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424214426] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:53:15,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:53:15,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2023-11-29 04:53:15,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375641816] [2023-11-29 04:53:15,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:53:15,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-29 04:53:15,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:53:15,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-29 04:53:15,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=958, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 04:53:15,304 INFO L87 Difference]: Start difference. First operand 143174 states and 167448 transitions. Second operand has 33 states, 33 states have (on average 11.151515151515152) internal successors, (368), 33 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:53:57,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:53:57,544 INFO L93 Difference]: Finished difference Result 466560 states and 545966 transitions. [2023-11-29 04:53:57,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2023-11-29 04:53:57,545 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 11.151515151515152) internal successors, (368), 33 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2023-11-29 04:53:57,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:53:58,133 INFO L225 Difference]: With dead ends: 466560 [2023-11-29 04:53:58,133 INFO L226 Difference]: Without dead ends: 386085 [2023-11-29 04:53:58,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17209 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=6924, Invalid=42582, Unknown=0, NotChecked=0, Total=49506 [2023-11-29 04:53:58,186 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 2744 mSDsluCounter, 3921 mSDsCounter, 0 mSdLazyCounter, 5020 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2744 SdHoareTripleChecker+Valid, 4184 SdHoareTripleChecker+Invalid, 5112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 5020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:53:58,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2744 Valid, 4184 Invalid, 5112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 5020 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-29 04:53:58,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386085 states. [2023-11-29 04:54:12,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386085 to 230533. [2023-11-29 04:54:13,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230533 states, 230532 states have (on average 1.1660463623271389) internal successors, (268811), 230532 states have internal predecessors, (268811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:13,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230533 states to 230533 states and 268811 transitions. [2023-11-29 04:54:13,580 INFO L78 Accepts]: Start accepts. Automaton has 230533 states and 268811 transitions. Word has length 132 [2023-11-29 04:54:13,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:54:13,580 INFO L495 AbstractCegarLoop]: Abstraction has 230533 states and 268811 transitions. [2023-11-29 04:54:13,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 11.151515151515152) internal successors, (368), 33 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:13,581 INFO L276 IsEmpty]: Start isEmpty. Operand 230533 states and 268811 transitions. [2023-11-29 04:54:13,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-29 04:54:13,609 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:54:13,610 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:54:13,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 04:54:13,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-29 04:54:13,810 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:54:13,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:54:13,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1019021138, now seen corresponding path program 1 times [2023-11-29 04:54:13,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:54:13,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438805440] [2023-11-29 04:54:13,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:54:13,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:54:13,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:54:16,971 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 39 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:54:16,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:54:16,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438805440] [2023-11-29 04:54:16,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438805440] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:54:16,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331121394] [2023-11-29 04:54:16,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:54:16,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:54:16,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:54:16,972 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:54:16,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 04:54:17,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:54:17,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 04:54:17,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:54:18,576 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 23 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:54:18,577 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:54:20,659 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 21 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:54:20,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331121394] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:54:20,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:54:20,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 11, 11] total 50 [2023-11-29 04:54:20,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936619866] [2023-11-29 04:54:20,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:54:20,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-11-29 04:54:20,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:54:20,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-11-29 04:54:20,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=2382, Unknown=0, NotChecked=0, Total=2550 [2023-11-29 04:54:20,662 INFO L87 Difference]: Start difference. First operand 230533 states and 268811 transitions. Second operand has 51 states, 51 states have (on average 7.431372549019608) internal successors, (379), 50 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:55:58,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:55:58,137 INFO L93 Difference]: Finished difference Result 356338 states and 414366 transitions. [2023-11-29 04:55:58,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 403 states. [2023-11-29 04:55:58,138 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 7.431372549019608) internal successors, (379), 50 states have internal predecessors, (379), 0 states have call successors, (0), 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 133 [2023-11-29 04:55:58,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:55:58,383 INFO L225 Difference]: With dead ends: 356338 [2023-11-29 04:55:58,383 INFO L226 Difference]: Without dead ends: 254599 [2023-11-29 04:55:58,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 695 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 450 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83796 ImplicationChecksByTransitivity, 73.6s TimeCoverageRelationStatistics Valid=19346, Invalid=184506, Unknown=0, NotChecked=0, Total=203852 [2023-11-29 04:55:58,440 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 6100 mSDsluCounter, 9184 mSDsCounter, 0 mSdLazyCounter, 10533 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6100 SdHoareTripleChecker+Valid, 9491 SdHoareTripleChecker+Invalid, 10788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 10533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:55:58,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6100 Valid, 9491 Invalid, 10788 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [255 Valid, 10533 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2023-11-29 04:55:58,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254599 states. [2023-11-29 04:56:12,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254599 to 172495. [2023-11-29 04:56:12,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172495 states, 172494 states have (on average 1.1616462021867426) internal successors, (200377), 172494 states have internal predecessors, (200377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:56:12,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172495 states to 172495 states and 200377 transitions. [2023-11-29 04:56:12,750 INFO L78 Accepts]: Start accepts. Automaton has 172495 states and 200377 transitions. Word has length 133 [2023-11-29 04:56:12,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:56:12,750 INFO L495 AbstractCegarLoop]: Abstraction has 172495 states and 200377 transitions. [2023-11-29 04:56:12,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 7.431372549019608) internal successors, (379), 50 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:56:12,750 INFO L276 IsEmpty]: Start isEmpty. Operand 172495 states and 200377 transitions. [2023-11-29 04:56:12,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-29 04:56:12,765 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:56:12,765 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:56:12,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 04:56:12,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-29 04:56:12,966 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:56:12,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:56:12,966 INFO L85 PathProgramCache]: Analyzing trace with hash 205308064, now seen corresponding path program 1 times [2023-11-29 04:56:12,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:56:12,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253521124] [2023-11-29 04:56:12,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:56:12,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:56:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:56:16,332 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 22 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:56:16,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:56:16,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253521124] [2023-11-29 04:56:16,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253521124] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:56:16,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600262888] [2023-11-29 04:56:16,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:56:16,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:56:16,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:56:16,333 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:56:16,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6e6b1d7-75f9-4566-9b83-9832be0b2ee7/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 04:56:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:56:16,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 04:56:16,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:56:18,489 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 39 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:56:18,489 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:56:24,609 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 39 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:56:24,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600262888] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:56:24,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:56:24,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 17, 20] total 59 [2023-11-29 04:56:24,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023207790] [2023-11-29 04:56:24,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:56:24,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-11-29 04:56:24,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:56:24,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-11-29 04:56:24,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=3245, Unknown=0, NotChecked=0, Total=3540 [2023-11-29 04:56:24,611 INFO L87 Difference]: Start difference. First operand 172495 states and 200377 transitions. Second operand has 60 states, 60 states have (on average 6.266666666666667) internal successors, (376), 59 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)