./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/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_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/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_39b943ec-28a7-4227-bd04-90c569a5d6c2/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 9078dc62fb834f9a41b95ee6a842bb2e61905311e37b0fb13d9ab1be77d00451 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:10:31,261 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:10:31,340 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 03:10:31,345 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:10:31,346 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:10:31,370 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:10:31,371 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:10:31,371 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:10:31,372 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:10:31,373 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:10:31,373 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:10:31,374 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:10:31,375 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:10:31,375 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:10:31,376 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:10:31,376 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:10:31,377 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:10:31,377 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:10:31,378 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:10:31,378 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:10:31,379 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:10:31,379 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:10:31,380 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:10:31,380 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:10:31,381 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:10:31,381 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:10:31,382 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:10:31,382 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:10:31,383 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:10:31,383 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:10:31,383 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:10:31,384 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:10:31,384 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:10:31,384 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:10:31,384 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:10:31,385 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:10:31,385 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:10:31,385 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:10:31,385 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:10:31,385 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:10:31,386 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:10:31,386 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:10:31,386 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_39b943ec-28a7-4227-bd04-90c569a5d6c2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9078dc62fb834f9a41b95ee6a842bb2e61905311e37b0fb13d9ab1be77d00451 [2023-11-29 03:10:31,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:10:31,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:10:31,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:10:31,642 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:10:31,642 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:10:31,643 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-11-29 03:10:34,490 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:10:34,952 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:10:34,953 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-11-29 03:10:34,993 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/data/32f13728b/a761794f02154c25aad7e46a9b36924c/FLAGfb6acc800 [2023-11-29 03:10:35,008 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/data/32f13728b/a761794f02154c25aad7e46a9b36924c [2023-11-29 03:10:35,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:10:35,012 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:10:35,014 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:10:35,014 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:10:35,020 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:10:35,021 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:10:35" (1/1) ... [2023-11-29 03:10:35,022 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@403ce815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:10:35, skipping insertion in model container [2023-11-29 03:10:35,022 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:10:35" (1/1) ... [2023-11-29 03:10:35,155 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:10:35,481 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_39b943ec-28a7-4227-bd04-90c569a5d6c2/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label05.c[6487,6500] [2023-11-29 03:10:35,537 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_39b943ec-28a7-4227-bd04-90c569a5d6c2/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label05.c[13423,13436] [2023-11-29 03:10:36,350 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:10:36,363 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:10:36,390 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_39b943ec-28a7-4227-bd04-90c569a5d6c2/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label05.c[6487,6500] [2023-11-29 03:10:36,403 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_39b943ec-28a7-4227-bd04-90c569a5d6c2/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label05.c[13423,13436] [2023-11-29 03:10:36,956 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:10:36,987 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:10:36,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:10:36 WrapperNode [2023-11-29 03:10:36,987 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:10:36,988 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:10:36,989 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:10:36,989 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:10:36,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:10:36" (1/1) ... [2023-11-29 03:10:37,044 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:10:36" (1/1) ... [2023-11-29 03:10:37,325 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4980 [2023-11-29 03:10:37,325 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:10:37,326 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:10:37,326 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:10:37,326 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:10:37,339 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:10:36" (1/1) ... [2023-11-29 03:10:37,339 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:10:36" (1/1) ... [2023-11-29 03:10:37,446 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:10:36" (1/1) ... [2023-11-29 03:10:37,589 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 03:10:37,589 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:10:36" (1/1) ... [2023-11-29 03:10:37,589 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:10:36" (1/1) ... [2023-11-29 03:10:37,765 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:10:36" (1/1) ... [2023-11-29 03:10:37,793 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:10:36" (1/1) ... [2023-11-29 03:10:37,848 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:10:36" (1/1) ... [2023-11-29 03:10:37,862 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:10:36" (1/1) ... [2023-11-29 03:10:37,955 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:10:37,956 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:10:37,957 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:10:37,957 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:10:37,958 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:10:36" (1/1) ... [2023-11-29 03:10:37,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:10:38,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:10:38,025 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:10:38,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:10:38,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:10:38,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:10:38,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:10:38,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:10:38,154 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:10:38,156 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:10:42,887 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:10:42,944 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:10:42,944 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 03:10:42,945 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:10:42 BoogieIcfgContainer [2023-11-29 03:10:42,946 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:10:42,948 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:10:42,948 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:10:42,951 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:10:42,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:10:35" (1/3) ... [2023-11-29 03:10:42,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@618d030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:10:42, skipping insertion in model container [2023-11-29 03:10:42,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:10:36" (2/3) ... [2023-11-29 03:10:42,953 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@618d030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:10:42, skipping insertion in model container [2023-11-29 03:10:42,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:10:42" (3/3) ... [2023-11-29 03:10:42,954 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-11-29 03:10:42,973 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:10:42,974 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 03:10:43,043 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:10:43,050 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;@6bdf2768, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:10:43,051 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 03:10:43,059 INFO L276 IsEmpty]: Start isEmpty. Operand has 809 states, 806 states have (on average 1.978908188585608) internal successors, (1595), 808 states have internal predecessors, (1595), 0 states have call successors, (0), 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 03:10:43,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 03:10:43,068 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:10:43,068 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:10:43,069 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:10:43,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:10:43,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1258292883, now seen corresponding path program 1 times [2023-11-29 03:10:43,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:10:43,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73107898] [2023-11-29 03:10:43,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:10:43,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:10:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:10:43,272 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 03:10:43,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:10:43,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73107898] [2023-11-29 03:10:43,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73107898] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:10:43,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:10:43,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:10:43,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847689392] [2023-11-29 03:10:43,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:10:43,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 03:10:43,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:10:43,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 03:10:43,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 03:10:43,314 INFO L87 Difference]: Start difference. First operand has 809 states, 806 states have (on average 1.978908188585608) internal successors, (1595), 808 states have internal predecessors, (1595), 0 states have call successors, (0), 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 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 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 03:10:43,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:10:43,409 INFO L93 Difference]: Finished difference Result 1597 states and 3151 transitions. [2023-11-29 03:10:43,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 03:10:43,411 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-11-29 03:10:43,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:10:43,430 INFO L225 Difference]: With dead ends: 1597 [2023-11-29 03:10:43,430 INFO L226 Difference]: Without dead ends: 805 [2023-11-29 03:10:43,436 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 03:10:43,440 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:10:43,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1523 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:10:43,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2023-11-29 03:10:43,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2023-11-29 03:10:43,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 803 states have (on average 1.8978829389788294) internal successors, (1524), 804 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:10:43,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1524 transitions. [2023-11-29 03:10:43,518 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1524 transitions. Word has length 17 [2023-11-29 03:10:43,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:10:43,519 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 1524 transitions. [2023-11-29 03:10:43,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 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 03:10:43,519 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1524 transitions. [2023-11-29 03:10:43,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 03:10:43,520 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:10:43,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:10:43,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 03:10:43,521 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:10:43,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:10:43,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1845098897, now seen corresponding path program 1 times [2023-11-29 03:10:43,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:10:43,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724571994] [2023-11-29 03:10:43,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:10:43,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:10:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:10:43,744 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 03:10:43,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:10:43,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724571994] [2023-11-29 03:10:43,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724571994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:10:43,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:10:43,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:10:43,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746484391] [2023-11-29 03:10:43,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:10:43,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:10:43,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:10:43,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:10:43,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:10:43,749 INFO L87 Difference]: Start difference. First operand 805 states and 1524 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 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 03:10:43,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:10:43,821 INFO L93 Difference]: Finished difference Result 839 states and 1576 transitions. [2023-11-29 03:10:43,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:10:43,822 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-11-29 03:10:43,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:10:43,827 INFO L225 Difference]: With dead ends: 839 [2023-11-29 03:10:43,827 INFO L226 Difference]: Without dead ends: 805 [2023-11-29 03:10:43,828 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 03:10:43,829 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 0 mSDsluCounter, 3022 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4543 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:10:43,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4543 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:10:43,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2023-11-29 03:10:43,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2023-11-29 03:10:43,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 803 states have (on average 1.8779576587795765) internal successors, (1508), 804 states have internal predecessors, (1508), 0 states have call successors, (0), 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 03:10:43,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1508 transitions. [2023-11-29 03:10:43,852 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1508 transitions. Word has length 17 [2023-11-29 03:10:43,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:10:43,852 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 1508 transitions. [2023-11-29 03:10:43,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 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 03:10:43,853 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1508 transitions. [2023-11-29 03:10:43,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-29 03:10:43,854 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:10:43,854 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] [2023-11-29 03:10:43,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 03:10:43,855 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:10:43,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:10:43,856 INFO L85 PathProgramCache]: Analyzing trace with hash 249094943, now seen corresponding path program 1 times [2023-11-29 03:10:43,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:10:43,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398542285] [2023-11-29 03:10:43,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:10:43,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:10:43,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:10:43,953 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 03:10:43,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:10:43,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398542285] [2023-11-29 03:10:43,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398542285] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:10:43,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:10:43,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:10:43,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062251498] [2023-11-29 03:10:43,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:10:43,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:10:43,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:10:43,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:10:43,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:10:43,956 INFO L87 Difference]: Start difference. First operand 805 states and 1508 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 03:10:44,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:10:44,083 INFO L93 Difference]: Finished difference Result 991 states and 1802 transitions. [2023-11-29 03:10:44,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:10:44,083 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2023-11-29 03:10:44,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:10:44,089 INFO L225 Difference]: With dead ends: 991 [2023-11-29 03:10:44,089 INFO L226 Difference]: Without dead ends: 960 [2023-11-29 03:10:44,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:10:44,092 INFO L413 NwaCegarLoop]: 1499 mSDtfsCounter, 4669 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4669 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:10:44,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4669 Valid, 1742 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:10:44,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2023-11-29 03:10:44,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 834. [2023-11-29 03:10:44,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 832 states have (on average 1.8677884615384615) internal successors, (1554), 833 states have internal predecessors, (1554), 0 states have call successors, (0), 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 03:10:44,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1554 transitions. [2023-11-29 03:10:44,114 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1554 transitions. Word has length 32 [2023-11-29 03:10:44,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:10:44,114 INFO L495 AbstractCegarLoop]: Abstraction has 834 states and 1554 transitions. [2023-11-29 03:10:44,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 03:10:44,115 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1554 transitions. [2023-11-29 03:10:44,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-29 03:10:44,117 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:10:44,117 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] [2023-11-29 03:10:44,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 03:10:44,117 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:10:44,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:10:44,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1262463601, now seen corresponding path program 1 times [2023-11-29 03:10:44,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:10:44,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442097161] [2023-11-29 03:10:44,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:10:44,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:10:44,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:10:44,176 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 03:10:44,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:10:44,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442097161] [2023-11-29 03:10:44,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442097161] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:10:44,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:10:44,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:10:44,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416813743] [2023-11-29 03:10:44,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:10:44,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:10:44,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:10:44,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:10:44,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:10:44,179 INFO L87 Difference]: Start difference. First operand 834 states and 1554 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 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 03:10:44,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:10:44,225 INFO L93 Difference]: Finished difference Result 943 states and 1725 transitions. [2023-11-29 03:10:44,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:10:44,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-11-29 03:10:44,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:10:44,232 INFO L225 Difference]: With dead ends: 943 [2023-11-29 03:10:44,232 INFO L226 Difference]: Without dead ends: 883 [2023-11-29 03:10:44,233 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 03:10:44,234 INFO L413 NwaCegarLoop]: 1501 mSDtfsCounter, 1466 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:10:44,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1542 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:10:44,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2023-11-29 03:10:44,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 879. [2023-11-29 03:10:44,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 877 states have (on average 1.8494868871151653) internal successors, (1622), 878 states have internal predecessors, (1622), 0 states have call successors, (0), 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 03:10:44,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1622 transitions. [2023-11-29 03:10:44,264 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1622 transitions. Word has length 34 [2023-11-29 03:10:44,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:10:44,265 INFO L495 AbstractCegarLoop]: Abstraction has 879 states and 1622 transitions. [2023-11-29 03:10:44,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 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 03:10:44,265 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1622 transitions. [2023-11-29 03:10:44,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-29 03:10:44,267 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:10:44,267 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] [2023-11-29 03:10:44,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 03:10:44,268 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:10:44,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:10:44,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1260318649, now seen corresponding path program 1 times [2023-11-29 03:10:44,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:10:44,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000338015] [2023-11-29 03:10:44,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:10:44,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:10:44,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:10:44,412 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 03:10:44,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:10:44,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000338015] [2023-11-29 03:10:44,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000338015] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:10:44,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:10:44,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:10:44,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218057520] [2023-11-29 03:10:44,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:10:44,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:10:44,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:10:44,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:10:44,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:10:44,415 INFO L87 Difference]: Start difference. First operand 879 states and 1622 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 03:10:44,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:10:44,499 INFO L93 Difference]: Finished difference Result 986 states and 1786 transitions. [2023-11-29 03:10:44,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:10:44,500 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-11-29 03:10:44,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:10:44,505 INFO L225 Difference]: With dead ends: 986 [2023-11-29 03:10:44,505 INFO L226 Difference]: Without dead ends: 881 [2023-11-29 03:10:44,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:10:44,507 INFO L413 NwaCegarLoop]: 1500 mSDtfsCounter, 2948 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2948 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:10:44,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2948 Valid, 1591 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:10:44,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2023-11-29 03:10:44,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 879. [2023-11-29 03:10:44,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 877 states have (on average 1.847206385404789) internal successors, (1620), 878 states have internal predecessors, (1620), 0 states have call successors, (0), 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 03:10:44,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1620 transitions. [2023-11-29 03:10:44,529 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1620 transitions. Word has length 34 [2023-11-29 03:10:44,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:10:44,530 INFO L495 AbstractCegarLoop]: Abstraction has 879 states and 1620 transitions. [2023-11-29 03:10:44,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 03:10:44,530 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1620 transitions. [2023-11-29 03:10:44,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-29 03:10:44,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:10:44,532 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] [2023-11-29 03:10:44,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 03:10:44,532 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:10:44,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:10:44,533 INFO L85 PathProgramCache]: Analyzing trace with hash -543584939, now seen corresponding path program 1 times [2023-11-29 03:10:44,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:10:44,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930984159] [2023-11-29 03:10:44,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:10:44,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:10:44,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:10:44,710 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 03:10:44,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:10:44,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930984159] [2023-11-29 03:10:44,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930984159] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:10:44,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:10:44,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:10:44,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846497887] [2023-11-29 03:10:44,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:10:44,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:10:44,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:10:44,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:10:44,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:10:44,714 INFO L87 Difference]: Start difference. First operand 879 states and 1620 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 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 03:10:44,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:10:44,780 INFO L93 Difference]: Finished difference Result 887 states and 1629 transitions. [2023-11-29 03:10:44,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:10:44,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2023-11-29 03:10:44,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:10:44,787 INFO L225 Difference]: With dead ends: 887 [2023-11-29 03:10:44,787 INFO L226 Difference]: Without dead ends: 885 [2023-11-29 03:10:44,788 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 03:10:44,789 INFO L413 NwaCegarLoop]: 1504 mSDtfsCounter, 1 mSDsluCounter, 3000 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4504 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:10:44,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4504 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:10:44,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2023-11-29 03:10:44,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 883. [2023-11-29 03:10:44,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 881 states have (on average 1.8422247446083995) internal successors, (1623), 882 states have internal predecessors, (1623), 0 states have call successors, (0), 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 03:10:44,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1623 transitions. [2023-11-29 03:10:44,818 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1623 transitions. Word has length 35 [2023-11-29 03:10:44,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:10:44,819 INFO L495 AbstractCegarLoop]: Abstraction has 883 states and 1623 transitions. [2023-11-29 03:10:44,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 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 03:10:44,819 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1623 transitions. [2023-11-29 03:10:44,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-29 03:10:44,820 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:10:44,821 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] [2023-11-29 03:10:44,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 03:10:44,821 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:10:44,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:10:44,822 INFO L85 PathProgramCache]: Analyzing trace with hash -709644761, now seen corresponding path program 1 times [2023-11-29 03:10:44,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:10:44,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7725408] [2023-11-29 03:10:44,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:10:44,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:10:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:10:44,864 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 03:10:44,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:10:44,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7725408] [2023-11-29 03:10:44,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7725408] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:10:44,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:10:44,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:10:44,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229416120] [2023-11-29 03:10:44,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:10:44,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:10:44,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:10:44,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:10:44,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:10:44,867 INFO L87 Difference]: Start difference. First operand 883 states and 1623 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 03:10:44,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:10:44,909 INFO L93 Difference]: Finished difference Result 1085 states and 1923 transitions. [2023-11-29 03:10:44,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:10:44,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-11-29 03:10:44,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:10:44,916 INFO L225 Difference]: With dead ends: 1085 [2023-11-29 03:10:44,917 INFO L226 Difference]: Without dead ends: 976 [2023-11-29 03:10:44,918 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 03:10:44,918 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 1473 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 1577 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 03:10:44,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 1577 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:10:44,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2023-11-29 03:10:44,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 974. [2023-11-29 03:10:44,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 972 states have (on average 1.8045267489711934) internal successors, (1754), 973 states have internal predecessors, (1754), 0 states have call successors, (0), 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 03:10:44,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1754 transitions. [2023-11-29 03:10:44,952 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1754 transitions. Word has length 36 [2023-11-29 03:10:44,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:10:44,952 INFO L495 AbstractCegarLoop]: Abstraction has 974 states and 1754 transitions. [2023-11-29 03:10:44,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 03:10:44,953 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1754 transitions. [2023-11-29 03:10:44,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-29 03:10:44,954 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:10:44,954 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] [2023-11-29 03:10:44,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 03:10:44,954 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:10:44,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:10:44,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1598378201, now seen corresponding path program 1 times [2023-11-29 03:10:44,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:10:44,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703625781] [2023-11-29 03:10:44,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:10:44,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:10:44,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:10:44,994 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 03:10:44,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:10:44,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703625781] [2023-11-29 03:10:44,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703625781] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:10:44,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:10:44,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:10:44,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142648614] [2023-11-29 03:10:44,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:10:44,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:10:44,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:10:44,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:10:44,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:10:44,998 INFO L87 Difference]: Start difference. First operand 974 states and 1754 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 03:10:45,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:10:45,041 INFO L93 Difference]: Finished difference Result 1342 states and 2288 transitions. [2023-11-29 03:10:45,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:10:45,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-11-29 03:10:45,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:10:45,050 INFO L225 Difference]: With dead ends: 1342 [2023-11-29 03:10:45,050 INFO L226 Difference]: Without dead ends: 1142 [2023-11-29 03:10:45,051 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 03:10:45,052 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 1475 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1583 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 03:10:45,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1583 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:10:45,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2023-11-29 03:10:45,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 1140. [2023-11-29 03:10:45,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1138 states have (on average 1.7434094903339192) internal successors, (1984), 1139 states have internal predecessors, (1984), 0 states have call successors, (0), 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 03:10:45,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1984 transitions. [2023-11-29 03:10:45,088 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1984 transitions. Word has length 36 [2023-11-29 03:10:45,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:10:45,088 INFO L495 AbstractCegarLoop]: Abstraction has 1140 states and 1984 transitions. [2023-11-29 03:10:45,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 03:10:45,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1984 transitions. [2023-11-29 03:10:45,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-29 03:10:45,089 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:10:45,090 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] [2023-11-29 03:10:45,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 03:10:45,090 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:10:45,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:10:45,091 INFO L85 PathProgramCache]: Analyzing trace with hash -566209588, now seen corresponding path program 1 times [2023-11-29 03:10:45,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:10:45,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841306108] [2023-11-29 03:10:45,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:10:45,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:10:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:10:45,128 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 03:10:45,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:10:45,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841306108] [2023-11-29 03:10:45,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841306108] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:10:45,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:10:45,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:10:45,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544726109] [2023-11-29 03:10:45,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:10:45,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:10:45,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:10:45,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:10:45,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:10:45,131 INFO L87 Difference]: Start difference. First operand 1140 states and 1984 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:10:45,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:10:45,177 INFO L93 Difference]: Finished difference Result 1531 states and 2558 transitions. [2023-11-29 03:10:45,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:10:45,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-11-29 03:10:45,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:10:45,186 INFO L225 Difference]: With dead ends: 1531 [2023-11-29 03:10:45,186 INFO L226 Difference]: Without dead ends: 1312 [2023-11-29 03:10:45,187 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 03:10:45,187 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 1474 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1584 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 03:10:45,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1584 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:10:45,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2023-11-29 03:10:45,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1310. [2023-11-29 03:10:45,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 1308 states have (on average 1.698776758409786) internal successors, (2222), 1309 states have internal predecessors, (2222), 0 states have call successors, (0), 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 03:10:45,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 2222 transitions. [2023-11-29 03:10:45,231 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 2222 transitions. Word has length 38 [2023-11-29 03:10:45,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:10:45,231 INFO L495 AbstractCegarLoop]: Abstraction has 1310 states and 2222 transitions. [2023-11-29 03:10:45,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:10:45,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 2222 transitions. [2023-11-29 03:10:45,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-29 03:10:45,232 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:10:45,233 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] [2023-11-29 03:10:45,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 03:10:45,233 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:10:45,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:10:45,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1445833490, now seen corresponding path program 1 times [2023-11-29 03:10:45,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:10:45,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816629623] [2023-11-29 03:10:45,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:10:45,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:10:45,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:10:45,333 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 03:10:45,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:10:45,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816629623] [2023-11-29 03:10:45,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816629623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:10:45,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:10:45,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:10:45,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651764411] [2023-11-29 03:10:45,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:10:45,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:10:45,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:10:45,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:10:45,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:10:45,336 INFO L87 Difference]: Start difference. First operand 1310 states and 2222 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 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 03:10:45,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:10:45,564 INFO L93 Difference]: Finished difference Result 3034 states and 4670 transitions. [2023-11-29 03:10:45,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:10:45,565 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 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 03:10:45,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:10:45,579 INFO L225 Difference]: With dead ends: 3034 [2023-11-29 03:10:45,579 INFO L226 Difference]: Without dead ends: 2500 [2023-11-29 03:10:45,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:10:45,582 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 3051 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3051 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:10:45,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3051 Valid, 3138 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:10:45,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2500 states. [2023-11-29 03:10:45,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2500 to 1842. [2023-11-29 03:10:45,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1840 states have (on average 1.6141304347826086) internal successors, (2970), 1841 states have internal predecessors, (2970), 0 states have call successors, (0), 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 03:10:45,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2970 transitions. [2023-11-29 03:10:45,656 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2970 transitions. Word has length 50 [2023-11-29 03:10:45,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:10:45,656 INFO L495 AbstractCegarLoop]: Abstraction has 1842 states and 2970 transitions. [2023-11-29 03:10:45,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 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 03:10:45,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2970 transitions. [2023-11-29 03:10:45,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-29 03:10:45,657 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:10:45,657 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] [2023-11-29 03:10:45,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 03:10:45,658 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:10:45,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:10:45,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1960400366, now seen corresponding path program 1 times [2023-11-29 03:10:45,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:10:45,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258728306] [2023-11-29 03:10:45,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:10:45,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:10:45,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:10:45,753 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 03:10:45,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:10:45,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258728306] [2023-11-29 03:10:45,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258728306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:10:45,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:10:45,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:10:45,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914382857] [2023-11-29 03:10:45,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:10:45,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:10:45,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:10:45,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:10:45,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:10:45,756 INFO L87 Difference]: Start difference. First operand 1842 states and 2970 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 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 03:10:45,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:10:45,929 INFO L93 Difference]: Finished difference Result 3566 states and 5418 transitions. [2023-11-29 03:10:45,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:10:45,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 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 03:10:45,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:10:45,947 INFO L225 Difference]: With dead ends: 3566 [2023-11-29 03:10:45,947 INFO L226 Difference]: Without dead ends: 3032 [2023-11-29 03:10:45,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:10:45,950 INFO L413 NwaCegarLoop]: 1544 mSDtfsCounter, 3043 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 3153 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:10:45,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3043 Valid, 3153 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:10:45,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2023-11-29 03:10:46,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 2642. [2023-11-29 03:10:46,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2642 states, 2640 states have (on average 1.5462121212121211) internal successors, (4082), 2641 states have internal predecessors, (4082), 0 states have call successors, (0), 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 03:10:46,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2642 states to 2642 states and 4082 transitions. [2023-11-29 03:10:46,062 INFO L78 Accepts]: Start accepts. Automaton has 2642 states and 4082 transitions. Word has length 50 [2023-11-29 03:10:46,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:10:46,063 INFO L495 AbstractCegarLoop]: Abstraction has 2642 states and 4082 transitions. [2023-11-29 03:10:46,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 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 03:10:46,063 INFO L276 IsEmpty]: Start isEmpty. Operand 2642 states and 4082 transitions. [2023-11-29 03:10:46,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-29 03:10:46,064 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:10:46,064 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] [2023-11-29 03:10:46,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 03:10:46,065 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:10:46,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:10:46,066 INFO L85 PathProgramCache]: Analyzing trace with hash 2001029718, now seen corresponding path program 1 times [2023-11-29 03:10:46,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:10:46,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637565102] [2023-11-29 03:10:46,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:10:46,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:10:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:10:46,147 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 03:10:46,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:10:46,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637565102] [2023-11-29 03:10:46,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637565102] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:10:46,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:10:46,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:10:46,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554519124] [2023-11-29 03:10:46,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:10:46,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:10:46,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:10:46,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:10:46,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:10:46,150 INFO L87 Difference]: Start difference. First operand 2642 states and 4082 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 03:10:46,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:10:46,229 INFO L93 Difference]: Finished difference Result 4005 states and 6032 transitions. [2023-11-29 03:10:46,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:10:46,230 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 03:10:46,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:10:46,241 INFO L225 Difference]: With dead ends: 4005 [2023-11-29 03:10:46,242 INFO L226 Difference]: Without dead ends: 2139 [2023-11-29 03:10:46,245 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 03:10:46,245 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 34 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3020 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 03:10:46,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3020 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:10:46,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2023-11-29 03:10:46,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 2137. [2023-11-29 03:10:46,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2137 states, 2135 states have (on average 1.5836065573770493) internal successors, (3381), 2136 states have internal predecessors, (3381), 0 states have call successors, (0), 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 03:10:46,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 3381 transitions. [2023-11-29 03:10:46,325 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 3381 transitions. Word has length 52 [2023-11-29 03:10:46,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:10:46,325 INFO L495 AbstractCegarLoop]: Abstraction has 2137 states and 3381 transitions. [2023-11-29 03:10:46,326 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 03:10:46,326 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 3381 transitions. [2023-11-29 03:10:46,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-29 03:10:46,326 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:10:46,327 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] [2023-11-29 03:10:46,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 03:10:46,327 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:10:46,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:10:46,327 INFO L85 PathProgramCache]: Analyzing trace with hash 626025683, now seen corresponding path program 1 times [2023-11-29 03:10:46,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:10:46,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777185918] [2023-11-29 03:10:46,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:10:46,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:10:46,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:10:46,416 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 03:10:46,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:10:46,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777185918] [2023-11-29 03:10:46,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777185918] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:10:46,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:10:46,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:10:46,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290933921] [2023-11-29 03:10:46,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:10:46,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:10:46,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:10:46,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:10:46,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:10:46,418 INFO L87 Difference]: Start difference. First operand 2137 states and 3381 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 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 03:10:46,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:10:46,567 INFO L93 Difference]: Finished difference Result 3297 states and 5041 transitions. [2023-11-29 03:10:46,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:10:46,568 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 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 52 [2023-11-29 03:10:46,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:10:46,583 INFO L225 Difference]: With dead ends: 3297 [2023-11-29 03:10:46,583 INFO L226 Difference]: Without dead ends: 2911 [2023-11-29 03:10:46,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:10:46,585 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 3043 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:10:46,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3043 Valid, 3138 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:10:46,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2023-11-29 03:10:46,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2521. [2023-11-29 03:10:46,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2521 states, 2519 states have (on average 1.5581579992060341) internal successors, (3925), 2520 states have internal predecessors, (3925), 0 states have call successors, (0), 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 03:10:46,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2521 states to 2521 states and 3925 transitions. [2023-11-29 03:10:46,677 INFO L78 Accepts]: Start accepts. Automaton has 2521 states and 3925 transitions. Word has length 52 [2023-11-29 03:10:46,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:10:46,677 INFO L495 AbstractCegarLoop]: Abstraction has 2521 states and 3925 transitions. [2023-11-29 03:10:46,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 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 03:10:46,678 INFO L276 IsEmpty]: Start isEmpty. Operand 2521 states and 3925 transitions. [2023-11-29 03:10:46,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-29 03:10:46,678 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:10:46,679 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:10:46,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 03:10:46,679 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:10:46,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:10:46,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1629170632, now seen corresponding path program 1 times [2023-11-29 03:10:46,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:10:46,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578972243] [2023-11-29 03:10:46,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:10:46,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:10:46,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:10:46,756 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 03:10:46,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:10:46,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578972243] [2023-11-29 03:10:46,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578972243] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:10:46,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:10:46,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:10:46,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548844388] [2023-11-29 03:10:46,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:10:46,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:10:46,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:10:46,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:10:46,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:10:46,758 INFO L87 Difference]: Start difference. First operand 2521 states and 3925 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 03:10:46,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:10:46,831 INFO L93 Difference]: Finished difference Result 3389 states and 5151 transitions. [2023-11-29 03:10:46,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:10:46,832 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 03:10:46,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:10:46,841 INFO L225 Difference]: With dead ends: 3389 [2023-11-29 03:10:46,841 INFO L226 Difference]: Without dead ends: 1659 [2023-11-29 03:10:46,843 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 03:10:46,844 INFO L413 NwaCegarLoop]: 1522 mSDtfsCounter, 29 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3005 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 03:10:46,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3005 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:10:46,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2023-11-29 03:10:46,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1657. [2023-11-29 03:10:46,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1657 states, 1655 states have (on average 1.6211480362537765) internal successors, (2683), 1656 states have internal predecessors, (2683), 0 states have call successors, (0), 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 03:10:46,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1657 states to 1657 states and 2683 transitions. [2023-11-29 03:10:46,945 INFO L78 Accepts]: Start accepts. Automaton has 1657 states and 2683 transitions. Word has length 53 [2023-11-29 03:10:46,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:10:46,946 INFO L495 AbstractCegarLoop]: Abstraction has 1657 states and 2683 transitions. [2023-11-29 03:10:46,946 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 03:10:46,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1657 states and 2683 transitions. [2023-11-29 03:10:46,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 03:10:46,947 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:10:46,947 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] [2023-11-29 03:10:46,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 03:10:46,948 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:10:46,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:10:46,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1014743962, now seen corresponding path program 1 times [2023-11-29 03:10:46,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:10:46,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519525048] [2023-11-29 03:10:46,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:10:46,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:10:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:10:47,042 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 03:10:47,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:10:47,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519525048] [2023-11-29 03:10:47,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519525048] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:10:47,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:10:47,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:10:47,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356040879] [2023-11-29 03:10:47,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:10:47,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:10:47,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:10:47,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:10:47,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:10:47,045 INFO L87 Difference]: Start difference. First operand 1657 states and 2683 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 03:10:47,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:10:47,110 INFO L93 Difference]: Finished difference Result 2093 states and 3288 transitions. [2023-11-29 03:10:47,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:10:47,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-11-29 03:10:47,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:10:47,117 INFO L225 Difference]: With dead ends: 2093 [2023-11-29 03:10:47,118 INFO L226 Difference]: Without dead ends: 1227 [2023-11-29 03:10:47,119 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 03:10:47,120 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 26 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2990 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 03:10:47,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2990 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:10:47,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2023-11-29 03:10:47,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1225. [2023-11-29 03:10:47,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 1223 states have (on average 1.6933769419460343) internal successors, (2071), 1224 states have internal predecessors, (2071), 0 states have call successors, (0), 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 03:10:47,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 2071 transitions. [2023-11-29 03:10:47,174 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 2071 transitions. Word has length 55 [2023-11-29 03:10:47,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:10:47,175 INFO L495 AbstractCegarLoop]: Abstraction has 1225 states and 2071 transitions. [2023-11-29 03:10:47,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 03:10:47,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 2071 transitions. [2023-11-29 03:10:47,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-29 03:10:47,176 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:10:47,177 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] [2023-11-29 03:10:47,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 03:10:47,177 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:10:47,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:10:47,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1240304108, now seen corresponding path program 1 times [2023-11-29 03:10:47,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:10:47,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277772912] [2023-11-29 03:10:47,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:10:47,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:10:47,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:10:50,635 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 03:10:50,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:10:50,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277772912] [2023-11-29 03:10:50,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277772912] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:10:50,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472662772] [2023-11-29 03:10:50,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:10:50,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:10:50,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:10:50,638 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:10:50,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:10:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:10:50,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 03:10:50,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:10:50,918 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 03:10:50,918 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:10:51,107 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 03:10:51,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472662772] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:10:51,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:10:51,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-11-29 03:10:51,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088379700] [2023-11-29 03:10:51,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:10:51,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 03:10:51,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:10:51,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 03:10:51,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-11-29 03:10:51,109 INFO L87 Difference]: Start difference. First operand 1225 states and 2071 transitions. Second operand has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 18 states have internal predecessors, (157), 0 states have call successors, (0), 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 03:10:54,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:10:54,806 INFO L93 Difference]: Finished difference Result 3378 states and 4914 transitions. [2023-11-29 03:10:54,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-29 03:10:54,806 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 18 states have internal predecessors, (157), 0 states have call successors, (0), 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 57 [2023-11-29 03:10:54,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:10:54,818 INFO L225 Difference]: With dead ends: 3378 [2023-11-29 03:10:54,818 INFO L226 Difference]: Without dead ends: 2944 [2023-11-29 03:10:54,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=744, Invalid=2916, Unknown=0, NotChecked=0, Total=3660 [2023-11-29 03:10:54,822 INFO L413 NwaCegarLoop]: 1495 mSDtfsCounter, 15526 mSDsluCounter, 4739 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15526 SdHoareTripleChecker+Valid, 6234 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:10:54,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15526 Valid, 6234 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 03:10:54,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2023-11-29 03:10:54,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 2786. [2023-11-29 03:10:54,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2786 states, 2784 states have (on average 1.4428879310344827) internal successors, (4017), 2785 states have internal predecessors, (4017), 0 states have call successors, (0), 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 03:10:54,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 4017 transitions. [2023-11-29 03:10:54,963 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 4017 transitions. Word has length 57 [2023-11-29 03:10:54,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:10:54,964 INFO L495 AbstractCegarLoop]: Abstraction has 2786 states and 4017 transitions. [2023-11-29 03:10:54,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 18 states have internal predecessors, (157), 0 states have call successors, (0), 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 03:10:54,965 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 4017 transitions. [2023-11-29 03:10:54,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-29 03:10:54,965 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:10:54,966 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] [2023-11-29 03:10:54,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-29 03:10:55,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 03:10:55,167 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:10:55,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:10:55,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1506068895, now seen corresponding path program 1 times [2023-11-29 03:10:55,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:10:55,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397280893] [2023-11-29 03:10:55,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:10:55,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:10:55,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:10:56,495 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 03:10:56,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:10:56,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397280893] [2023-11-29 03:10:56,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397280893] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:10:56,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770794668] [2023-11-29 03:10:56,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:10:56,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:10:56,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:10:56,497 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:10:56,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:10:56,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:10:56,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 03:10:56,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:10:57,194 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 03:10:57,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:10:58,096 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 03:10:58,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770794668] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:10:58,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:10:58,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2023-11-29 03:10:58,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775158530] [2023-11-29 03:10:58,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:10:58,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 03:10:58,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:10:58,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 03:10:58,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=821, Unknown=0, NotChecked=0, Total=992 [2023-11-29 03:10:58,099 INFO L87 Difference]: Start difference. First operand 2786 states and 4017 transitions. Second operand has 32 states, 32 states have (on average 4.8125) internal successors, (154), 32 states have internal predecessors, (154), 0 states have call successors, (0), 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 03:10:59,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:10:59,184 INFO L93 Difference]: Finished difference Result 6754 states and 9033 transitions. [2023-11-29 03:10:59,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 03:10:59,184 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.8125) internal successors, (154), 32 states have internal predecessors, (154), 0 states have call successors, (0), 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 58 [2023-11-29 03:10:59,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:10:59,197 INFO L225 Difference]: With dead ends: 6754 [2023-11-29 03:10:59,197 INFO L226 Difference]: Without dead ends: 5024 [2023-11-29 03:10:59,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=530, Invalid=1822, Unknown=0, NotChecked=0, Total=2352 [2023-11-29 03:10:59,202 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 19339 mSDsluCounter, 7683 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19339 SdHoareTripleChecker+Valid, 9176 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:10:59,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19339 Valid, 9176 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:10:59,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5024 states. [2023-11-29 03:10:59,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5024 to 4692. [2023-11-29 03:10:59,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4692 states, 4690 states have (on average 1.3562899786780385) internal successors, (6361), 4691 states have internal predecessors, (6361), 0 states have call successors, (0), 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 03:10:59,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4692 states to 4692 states and 6361 transitions. [2023-11-29 03:10:59,428 INFO L78 Accepts]: Start accepts. Automaton has 4692 states and 6361 transitions. Word has length 58 [2023-11-29 03:10:59,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:10:59,428 INFO L495 AbstractCegarLoop]: Abstraction has 4692 states and 6361 transitions. [2023-11-29 03:10:59,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.8125) internal successors, (154), 32 states have internal predecessors, (154), 0 states have call successors, (0), 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 03:10:59,428 INFO L276 IsEmpty]: Start isEmpty. Operand 4692 states and 6361 transitions. [2023-11-29 03:10:59,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-29 03:10:59,429 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:10:59,429 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:10:59,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 03:10:59,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 03:10:59,632 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:10:59,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:10:59,632 INFO L85 PathProgramCache]: Analyzing trace with hash 983464685, now seen corresponding path program 1 times [2023-11-29 03:10:59,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:10:59,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097375272] [2023-11-29 03:10:59,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:10:59,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:10:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:10:59,911 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:10:59,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:10:59,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097375272] [2023-11-29 03:10:59,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097375272] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:10:59,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514917253] [2023-11-29 03:10:59,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:10:59,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:10:59,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:10:59,912 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:10:59,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:11:00,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:11:00,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 03:11:00,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:11:00,493 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:11:00,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:11:01,390 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:11:01,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514917253] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:11:01,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:11:01,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 28 [2023-11-29 03:11:01,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78385382] [2023-11-29 03:11:01,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:11:01,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 03:11:01,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:11:01,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 03:11:01,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2023-11-29 03:11:01,393 INFO L87 Difference]: Start difference. First operand 4692 states and 6361 transitions. Second operand has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 28 states have internal predecessors, (150), 0 states have call successors, (0), 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 03:11:02,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:11:02,223 INFO L93 Difference]: Finished difference Result 9297 states and 12133 transitions. [2023-11-29 03:11:02,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 03:11:02,224 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 28 states have internal predecessors, (150), 0 states have call successors, (0), 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 58 [2023-11-29 03:11:02,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:11:02,232 INFO L225 Difference]: With dead ends: 9297 [2023-11-29 03:11:02,232 INFO L226 Difference]: Without dead ends: 5967 [2023-11-29 03:11:02,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=349, Invalid=1211, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 03:11:02,237 INFO L413 NwaCegarLoop]: 1492 mSDtfsCounter, 11961 mSDsluCounter, 6087 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11961 SdHoareTripleChecker+Valid, 7579 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:11:02,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11961 Valid, 7579 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 03:11:02,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5967 states. [2023-11-29 03:11:02,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5967 to 5785. [2023-11-29 03:11:02,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5785 states, 5783 states have (on average 1.335638941725748) internal successors, (7724), 5784 states have internal predecessors, (7724), 0 states have call successors, (0), 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 03:11:02,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5785 states to 5785 states and 7724 transitions. [2023-11-29 03:11:02,470 INFO L78 Accepts]: Start accepts. Automaton has 5785 states and 7724 transitions. Word has length 58 [2023-11-29 03:11:02,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:11:02,470 INFO L495 AbstractCegarLoop]: Abstraction has 5785 states and 7724 transitions. [2023-11-29 03:11:02,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 28 states have internal predecessors, (150), 0 states have call successors, (0), 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 03:11:02,470 INFO L276 IsEmpty]: Start isEmpty. Operand 5785 states and 7724 transitions. [2023-11-29 03:11:02,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-29 03:11:02,471 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:11:02,471 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:11:02,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 03:11:02,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 03:11:02,672 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:11:02,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:11:02,672 INFO L85 PathProgramCache]: Analyzing trace with hash -985944595, now seen corresponding path program 1 times [2023-11-29 03:11:02,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:11:02,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522978992] [2023-11-29 03:11:02,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:11:02,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:11:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:11:03,084 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:11:03,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:11:03,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522978992] [2023-11-29 03:11:03,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522978992] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:11:03,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137952560] [2023-11-29 03:11:03,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:11:03,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:11:03,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:11:03,086 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:11:03,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 03:11:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:11:03,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 03:11:03,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:11:03,827 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:11:03,827 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:11:04,587 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:11:04,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137952560] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:11:04,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:11:04,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-11-29 03:11:04,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149036039] [2023-11-29 03:11:04,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:11:04,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 03:11:04,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:11:04,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 03:11:04,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2023-11-29 03:11:04,590 INFO L87 Difference]: Start difference. First operand 5785 states and 7724 transitions. Second operand has 28 states, 28 states have (on average 5.178571428571429) internal successors, (145), 28 states have internal predecessors, (145), 0 states have call successors, (0), 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 03:11:05,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:11:05,399 INFO L93 Difference]: Finished difference Result 10441 states and 13512 transitions. [2023-11-29 03:11:05,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 03:11:05,399 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.178571428571429) internal successors, (145), 28 states have internal predecessors, (145), 0 states have call successors, (0), 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 58 [2023-11-29 03:11:05,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:11:05,410 INFO L225 Difference]: With dead ends: 10441 [2023-11-29 03:11:05,410 INFO L226 Difference]: Without dead ends: 6245 [2023-11-29 03:11:05,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 03:11:05,417 INFO L413 NwaCegarLoop]: 1500 mSDtfsCounter, 10650 mSDsluCounter, 7739 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10650 SdHoareTripleChecker+Valid, 9239 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:11:05,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10650 Valid, 9239 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:11:05,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6245 states. [2023-11-29 03:11:05,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6245 to 5853. [2023-11-29 03:11:05,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5853 states, 5851 states have (on average 1.3278072124423175) internal successors, (7769), 5852 states have internal predecessors, (7769), 0 states have call successors, (0), 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 03:11:05,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5853 states to 5853 states and 7769 transitions. [2023-11-29 03:11:05,626 INFO L78 Accepts]: Start accepts. Automaton has 5853 states and 7769 transitions. Word has length 58 [2023-11-29 03:11:05,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:11:05,627 INFO L495 AbstractCegarLoop]: Abstraction has 5853 states and 7769 transitions. [2023-11-29 03:11:05,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.178571428571429) internal successors, (145), 28 states have internal predecessors, (145), 0 states have call successors, (0), 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 03:11:05,627 INFO L276 IsEmpty]: Start isEmpty. Operand 5853 states and 7769 transitions. [2023-11-29 03:11:05,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-29 03:11:05,628 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:11:05,628 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:11:05,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 03:11:05,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:11:05,829 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:11:05,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:11:05,829 INFO L85 PathProgramCache]: Analyzing trace with hash -171888270, now seen corresponding path program 1 times [2023-11-29 03:11:05,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:11:05,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327276993] [2023-11-29 03:11:05,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:11:05,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:11:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:11:06,652 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:11:06,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:11:06,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327276993] [2023-11-29 03:11:06,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327276993] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:11:06,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180790425] [2023-11-29 03:11:06,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:11:06,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:11:06,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:11:06,653 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:11:06,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 03:11:06,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:11:06,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 03:11:06,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:11:07,678 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:11:07,679 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:11:08,544 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:11:08,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180790425] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:11:08,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:11:08,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 34 [2023-11-29 03:11:08,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824728551] [2023-11-29 03:11:08,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:11:08,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-29 03:11:08,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:11:08,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-29 03:11:08,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1011, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 03:11:08,547 INFO L87 Difference]: Start difference. First operand 5853 states and 7769 transitions. Second operand has 34 states, 34 states have (on average 4.647058823529412) internal successors, (158), 34 states have internal predecessors, (158), 0 states have call successors, (0), 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 03:11:15,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:11:15,298 INFO L93 Difference]: Finished difference Result 11747 states and 15083 transitions. [2023-11-29 03:11:15,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-11-29 03:11:15,299 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.647058823529412) internal successors, (158), 34 states have internal predecessors, (158), 0 states have call successors, (0), 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 59 [2023-11-29 03:11:15,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:11:15,309 INFO L225 Difference]: With dead ends: 11747 [2023-11-29 03:11:15,309 INFO L226 Difference]: Without dead ends: 8723 [2023-11-29 03:11:15,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3199 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=2207, Invalid=9135, Unknown=0, NotChecked=0, Total=11342 [2023-11-29 03:11:15,316 INFO L413 NwaCegarLoop]: 1513 mSDtfsCounter, 10742 mSDsluCounter, 20171 mSDsCounter, 0 mSdLazyCounter, 1564 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10742 SdHoareTripleChecker+Valid, 21684 SdHoareTripleChecker+Invalid, 1641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:11:15,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10742 Valid, 21684 Invalid, 1641 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 1564 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 03:11:15,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8723 states. [2023-11-29 03:11:15,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8723 to 4620. [2023-11-29 03:11:15,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4620 states, 4618 states have (on average 1.3471199653529666) internal successors, (6221), 4619 states have internal predecessors, (6221), 0 states have call successors, (0), 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 03:11:15,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4620 states to 4620 states and 6221 transitions. [2023-11-29 03:11:15,528 INFO L78 Accepts]: Start accepts. Automaton has 4620 states and 6221 transitions. Word has length 59 [2023-11-29 03:11:15,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:11:15,528 INFO L495 AbstractCegarLoop]: Abstraction has 4620 states and 6221 transitions. [2023-11-29 03:11:15,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.647058823529412) internal successors, (158), 34 states have internal predecessors, (158), 0 states have call successors, (0), 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 03:11:15,528 INFO L276 IsEmpty]: Start isEmpty. Operand 4620 states and 6221 transitions. [2023-11-29 03:11:15,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-29 03:11:15,529 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:11:15,529 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, 1, 1, 1, 1, 1, 1] [2023-11-29 03:11:15,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 03:11:15,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:11:15,730 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:11:15,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:11:15,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1020930071, now seen corresponding path program 1 times [2023-11-29 03:11:15,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:11:15,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460996017] [2023-11-29 03:11:15,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:11:15,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:11:15,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:11:15,823 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 03:11:15,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:11:15,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460996017] [2023-11-29 03:11:15,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460996017] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:11:15,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:11:15,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:11:15,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545689174] [2023-11-29 03:11:15,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:11:15,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:11:15,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:11:15,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:11:15,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:11:15,825 INFO L87 Difference]: Start difference. First operand 4620 states and 6221 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 03:11:22,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:11:22,271 INFO L93 Difference]: Finished difference Result 6875 states and 10530 transitions. [2023-11-29 03:11:22,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:11:22,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2023-11-29 03:11:22,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:11:22,281 INFO L225 Difference]: With dead ends: 6875 [2023-11-29 03:11:22,281 INFO L226 Difference]: Without dead ends: 6122 [2023-11-29 03:11:22,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:11:22,283 INFO L413 NwaCegarLoop]: 759 mSDtfsCounter, 2320 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5521 mSolverCounterSat, 1100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2320 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 6621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1100 IncrementalHoareTripleChecker+Valid, 5521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:11:22,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2320 Valid, 777 Invalid, 6621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1100 Valid, 5521 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-11-29 03:11:22,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6122 states. [2023-11-29 03:11:22,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6122 to 6122. [2023-11-29 03:11:22,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6122 states, 6120 states have (on average 1.363888888888889) internal successors, (8347), 6121 states have internal predecessors, (8347), 0 states have call successors, (0), 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 03:11:22,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6122 states to 6122 states and 8347 transitions. [2023-11-29 03:11:22,477 INFO L78 Accepts]: Start accepts. Automaton has 6122 states and 8347 transitions. Word has length 59 [2023-11-29 03:11:22,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:11:22,477 INFO L495 AbstractCegarLoop]: Abstraction has 6122 states and 8347 transitions. [2023-11-29 03:11:22,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 03:11:22,477 INFO L276 IsEmpty]: Start isEmpty. Operand 6122 states and 8347 transitions. [2023-11-29 03:11:22,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-29 03:11:22,478 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:11:22,478 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] [2023-11-29 03:11:22,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 03:11:22,478 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:11:22,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:11:22,479 INFO L85 PathProgramCache]: Analyzing trace with hash 236649807, now seen corresponding path program 1 times [2023-11-29 03:11:22,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:11:22,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376882452] [2023-11-29 03:11:22,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:11:22,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:11:22,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:11:23,233 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 03:11:23,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:11:23,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376882452] [2023-11-29 03:11:23,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376882452] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:11:23,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869565895] [2023-11-29 03:11:23,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:11:23,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:11:23,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:11:23,235 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:11:23,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 03:11:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:11:23,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 03:11:23,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:11:24,067 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 03:11:24,067 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:11:25,223 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 03:11:25,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869565895] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:11:25,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:11:25,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 31 [2023-11-29 03:11:25,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201459664] [2023-11-29 03:11:25,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:11:25,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 03:11:25,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:11:25,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 03:11:25,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=815, Unknown=0, NotChecked=0, Total=930 [2023-11-29 03:11:25,225 INFO L87 Difference]: Start difference. First operand 6122 states and 8347 transitions. Second operand has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:11:26,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:11:26,896 INFO L93 Difference]: Finished difference Result 6932 states and 9354 transitions. [2023-11-29 03:11:26,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 03:11:26,897 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-11-29 03:11:26,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:11:26,903 INFO L225 Difference]: With dead ends: 6932 [2023-11-29 03:11:26,903 INFO L226 Difference]: Without dead ends: 4489 [2023-11-29 03:11:26,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=533, Invalid=1819, Unknown=0, NotChecked=0, Total=2352 [2023-11-29 03:11:26,907 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 13963 mSDsluCounter, 11906 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13963 SdHoareTripleChecker+Valid, 13399 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:11:26,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13963 Valid, 13399 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:11:26,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4489 states. [2023-11-29 03:11:27,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4489 to 4413. [2023-11-29 03:11:27,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4413 states, 4411 states have (on average 1.4150986170936295) internal successors, (6242), 4412 states have internal predecessors, (6242), 0 states have call successors, (0), 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 03:11:27,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4413 states to 4413 states and 6242 transitions. [2023-11-29 03:11:27,035 INFO L78 Accepts]: Start accepts. Automaton has 4413 states and 6242 transitions. Word has length 60 [2023-11-29 03:11:27,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:11:27,036 INFO L495 AbstractCegarLoop]: Abstraction has 4413 states and 6242 transitions. [2023-11-29 03:11:27,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:11:27,036 INFO L276 IsEmpty]: Start isEmpty. Operand 4413 states and 6242 transitions. [2023-11-29 03:11:27,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-29 03:11:27,037 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:11:27,038 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-11-29 03:11:27,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 03:11:27,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 03:11:27,238 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:11:27,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:11:27,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1767313277, now seen corresponding path program 1 times [2023-11-29 03:11:27,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:11:27,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513585292] [2023-11-29 03:11:27,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:11:27,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:11:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:11:28,171 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 36 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:11:28,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:11:28,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513585292] [2023-11-29 03:11:28,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513585292] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:11:28,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721376831] [2023-11-29 03:11:28,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:11:28,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:11:28,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:11:28,173 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:11:28,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 03:11:28,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:11:28,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 03:11:28,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:11:29,177 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 40 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:11:29,177 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:11:31,234 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 36 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:11:31,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721376831] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:11:31,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:11:31,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 31 [2023-11-29 03:11:31,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256632855] [2023-11-29 03:11:31,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:11:31,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 03:11:31,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:11:31,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 03:11:31,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=869, Unknown=0, NotChecked=0, Total=992 [2023-11-29 03:11:31,237 INFO L87 Difference]: Start difference. First operand 4413 states and 6242 transitions. Second operand has 32 states, 32 states have (on average 7.125) internal successors, (228), 31 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 03:11:33,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:11:33,430 INFO L93 Difference]: Finished difference Result 5671 states and 7807 transitions. [2023-11-29 03:11:33,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-29 03:11:33,431 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.125) internal successors, (228), 31 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 97 [2023-11-29 03:11:33,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:11:33,434 INFO L225 Difference]: With dead ends: 5671 [2023-11-29 03:11:33,434 INFO L226 Difference]: Without dead ends: 4495 [2023-11-29 03:11:33,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=855, Invalid=3051, Unknown=0, NotChecked=0, Total=3906 [2023-11-29 03:11:33,437 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 19663 mSDsluCounter, 12303 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19663 SdHoareTripleChecker+Valid, 13835 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:11:33,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19663 Valid, 13835 Invalid, 990 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [34 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:11:33,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4495 states. [2023-11-29 03:11:33,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4495 to 4413. [2023-11-29 03:11:33,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4413 states, 4411 states have (on average 1.411017909771027) internal successors, (6224), 4412 states have internal predecessors, (6224), 0 states have call successors, (0), 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 03:11:33,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4413 states to 4413 states and 6224 transitions. [2023-11-29 03:11:33,646 INFO L78 Accepts]: Start accepts. Automaton has 4413 states and 6224 transitions. Word has length 97 [2023-11-29 03:11:33,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:11:33,646 INFO L495 AbstractCegarLoop]: Abstraction has 4413 states and 6224 transitions. [2023-11-29 03:11:33,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.125) internal successors, (228), 31 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 03:11:33,646 INFO L276 IsEmpty]: Start isEmpty. Operand 4413 states and 6224 transitions. [2023-11-29 03:11:33,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-29 03:11:33,647 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:11:33,648 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-11-29 03:11:33,652 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 03:11:33,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 03:11:33,848 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:11:33,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:11:33,849 INFO L85 PathProgramCache]: Analyzing trace with hash -350030467, now seen corresponding path program 1 times [2023-11-29 03:11:33,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:11:33,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632074177] [2023-11-29 03:11:33,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:11:33,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:11:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:11:34,479 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 19 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:11:34,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:11:34,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632074177] [2023-11-29 03:11:34,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632074177] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:11:34,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945705341] [2023-11-29 03:11:34,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:11:34,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:11:34,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:11:34,481 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:11:34,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 03:11:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:11:34,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-29 03:11:34,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:11:37,155 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 35 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:11:37,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:11:41,541 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 35 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:11:41,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945705341] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:11:41,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:11:41,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 22, 20] total 52 [2023-11-29 03:11:41,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139980693] [2023-11-29 03:11:41,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:11:41,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-11-29 03:11:41,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:11:41,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-11-29 03:11:41,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=2412, Unknown=0, NotChecked=0, Total=2652 [2023-11-29 03:11:41,544 INFO L87 Difference]: Start difference. First operand 4413 states and 6224 transitions. Second operand has 52 states, 52 states have (on average 5.134615384615385) internal successors, (267), 52 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:12:13,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:12:13,715 INFO L93 Difference]: Finished difference Result 7367 states and 9906 transitions. [2023-11-29 03:12:13,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2023-11-29 03:12:13,716 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.134615384615385) internal successors, (267), 52 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-11-29 03:12:13,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:12:13,721 INFO L225 Difference]: With dead ends: 7367 [2023-11-29 03:12:13,721 INFO L226 Difference]: Without dead ends: 6235 [2023-11-29 03:12:13,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12168 ImplicationChecksByTransitivity, 31.3s TimeCoverageRelationStatistics Valid=4259, Invalid=33961, Unknown=0, NotChecked=0, Total=38220 [2023-11-29 03:12:13,730 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 23518 mSDsluCounter, 29515 mSDsCounter, 0 mSdLazyCounter, 2200 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23518 SdHoareTripleChecker+Valid, 31047 SdHoareTripleChecker+Invalid, 2397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 2200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:12:13,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23518 Valid, 31047 Invalid, 2397 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [197 Valid, 2200 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 03:12:13,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6235 states. [2023-11-29 03:12:13,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6235 to 5237. [2023-11-29 03:12:13,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5237 states, 5235 states have (on average 1.3774594078319007) internal successors, (7211), 5236 states have internal predecessors, (7211), 0 states have call successors, (0), 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 03:12:13,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5237 states to 5237 states and 7211 transitions. [2023-11-29 03:12:13,992 INFO L78 Accepts]: Start accepts. Automaton has 5237 states and 7211 transitions. Word has length 97 [2023-11-29 03:12:13,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:12:13,992 INFO L495 AbstractCegarLoop]: Abstraction has 5237 states and 7211 transitions. [2023-11-29 03:12:13,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.134615384615385) internal successors, (267), 52 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:12:13,992 INFO L276 IsEmpty]: Start isEmpty. Operand 5237 states and 7211 transitions. [2023-11-29 03:12:13,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-29 03:12:13,994 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:12:13,994 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-11-29 03:12:13,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 03:12:14,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:12:14,194 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:12:14,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:12:14,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1400331381, now seen corresponding path program 1 times [2023-11-29 03:12:14,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:12:14,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182768883] [2023-11-29 03:12:14,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:12:14,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:12:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:12:14,977 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:12:14,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:12:14,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182768883] [2023-11-29 03:12:14,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182768883] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:12:14,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038561360] [2023-11-29 03:12:14,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:12:14,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:12:14,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:12:14,979 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:12:14,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 03:12:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:12:15,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 03:12:15,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:12:15,793 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 30 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:12:15,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:12:18,197 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:12:18,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038561360] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:12:18,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:12:18,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 31 [2023-11-29 03:12:18,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670386684] [2023-11-29 03:12:18,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:12:18,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 03:12:18,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:12:18,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 03:12:18,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=865, Unknown=0, NotChecked=0, Total=992 [2023-11-29 03:12:18,199 INFO L87 Difference]: Start difference. First operand 5237 states and 7211 transitions. Second operand has 32 states, 32 states have (on average 7.375) internal successors, (236), 31 states have internal predecessors, (236), 0 states have call successors, (0), 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 03:12:20,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:12:20,560 INFO L93 Difference]: Finished difference Result 12533 states and 16238 transitions. [2023-11-29 03:12:20,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-29 03:12:20,560 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.375) internal successors, (236), 31 states have internal predecessors, (236), 0 states have call successors, (0), 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 99 [2023-11-29 03:12:20,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:12:20,566 INFO L225 Difference]: With dead ends: 12533 [2023-11-29 03:12:20,566 INFO L226 Difference]: Without dead ends: 9849 [2023-11-29 03:12:20,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 181 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1286 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1228, Invalid=4322, Unknown=0, NotChecked=0, Total=5550 [2023-11-29 03:12:20,569 INFO L413 NwaCegarLoop]: 1531 mSDtfsCounter, 16797 mSDsluCounter, 10731 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16797 SdHoareTripleChecker+Valid, 12262 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:12:20,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16797 Valid, 12262 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:12:20,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9849 states. [2023-11-29 03:12:21,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9849 to 7959. [2023-11-29 03:12:21,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7959 states, 7957 states have (on average 1.3173306522558754) internal successors, (10482), 7958 states have internal predecessors, (10482), 0 states have call successors, (0), 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 03:12:21,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7959 states to 7959 states and 10482 transitions. [2023-11-29 03:12:21,037 INFO L78 Accepts]: Start accepts. Automaton has 7959 states and 10482 transitions. Word has length 99 [2023-11-29 03:12:21,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:12:21,038 INFO L495 AbstractCegarLoop]: Abstraction has 7959 states and 10482 transitions. [2023-11-29 03:12:21,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.375) internal successors, (236), 31 states have internal predecessors, (236), 0 states have call successors, (0), 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 03:12:21,038 INFO L276 IsEmpty]: Start isEmpty. Operand 7959 states and 10482 transitions. [2023-11-29 03:12:21,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-29 03:12:21,039 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:12:21,040 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 03:12:21,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 03:12:21,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 03:12:21,240 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:12:21,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:12:21,241 INFO L85 PathProgramCache]: Analyzing trace with hash 729792707, now seen corresponding path program 1 times [2023-11-29 03:12:21,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:12:21,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030040628] [2023-11-29 03:12:21,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:12:21,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:12:21,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:12:22,429 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 54 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 03:12:22,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:12:22,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030040628] [2023-11-29 03:12:22,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030040628] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:12:22,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857144601] [2023-11-29 03:12:22,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:12:22,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:12:22,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:12:22,430 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:12:22,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 03:12:22,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:12:22,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 03:12:22,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:12:24,455 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 13 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:12:24,455 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:12:28,053 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 13 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:12:28,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857144601] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:12:28,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:12:28,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21, 21] total 57 [2023-11-29 03:12:28,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125665315] [2023-11-29 03:12:28,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:12:28,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-11-29 03:12:28,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:12:28,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-11-29 03:12:28,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=2904, Unknown=0, NotChecked=0, Total=3192 [2023-11-29 03:12:28,055 INFO L87 Difference]: Start difference. First operand 7959 states and 10482 transitions. Second operand has 57 states, 57 states have (on average 4.7368421052631575) internal successors, (270), 57 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:13:30,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:13:30,008 INFO L93 Difference]: Finished difference Result 22962 states and 28542 transitions. [2023-11-29 03:13:30,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 259 states. [2023-11-29 03:13:30,008 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 4.7368421052631575) internal successors, (270), 57 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-11-29 03:13:30,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:13:30,020 INFO L225 Difference]: With dead ends: 22962 [2023-11-29 03:13:30,020 INFO L226 Difference]: Without dead ends: 19878 [2023-11-29 03:13:30,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 311 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37361 ImplicationChecksByTransitivity, 57.8s TimeCoverageRelationStatistics Valid=13927, Invalid=83729, Unknown=0, NotChecked=0, Total=97656 [2023-11-29 03:13:30,030 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 29596 mSDsluCounter, 30800 mSDsCounter, 0 mSdLazyCounter, 4039 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29596 SdHoareTripleChecker+Valid, 32373 SdHoareTripleChecker+Invalid, 4412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 4039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:13:30,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29596 Valid, 32373 Invalid, 4412 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [373 Valid, 4039 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-29 03:13:30,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19878 states. [2023-11-29 03:13:30,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19878 to 10834. [2023-11-29 03:13:30,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10834 states, 10832 states have (on average 1.2891432791728212) internal successors, (13964), 10833 states have internal predecessors, (13964), 0 states have call successors, (0), 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 03:13:30,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10834 states to 10834 states and 13964 transitions. [2023-11-29 03:13:30,989 INFO L78 Accepts]: Start accepts. Automaton has 10834 states and 13964 transitions. Word has length 99 [2023-11-29 03:13:30,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:13:30,989 INFO L495 AbstractCegarLoop]: Abstraction has 10834 states and 13964 transitions. [2023-11-29 03:13:30,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 4.7368421052631575) internal successors, (270), 57 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:13:30,989 INFO L276 IsEmpty]: Start isEmpty. Operand 10834 states and 13964 transitions. [2023-11-29 03:13:30,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-29 03:13:30,991 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:13:30,991 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 03:13:30,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 03:13:31,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 03:13:31,192 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:13:31,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:31,192 INFO L85 PathProgramCache]: Analyzing trace with hash -636645631, now seen corresponding path program 1 times [2023-11-29 03:13:31,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:31,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884794774] [2023-11-29 03:13:31,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:31,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:32,475 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 13 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:13:32,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:32,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884794774] [2023-11-29 03:13:32,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884794774] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:13:32,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180804900] [2023-11-29 03:13:32,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:32,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:13:32,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:32,477 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:13:32,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 03:13:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:32,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 03:13:32,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:34,650 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 23 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:13:34,650 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:13:38,308 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 23 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:13:38,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180804900] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:13:38,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:13:38,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 18] total 53 [2023-11-29 03:13:38,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882252396] [2023-11-29 03:13:38,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:13:38,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-11-29 03:13:38,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:13:38,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-11-29 03:13:38,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=2544, Unknown=0, NotChecked=0, Total=2756 [2023-11-29 03:13:38,310 INFO L87 Difference]: Start difference. First operand 10834 states and 13964 transitions. Second operand has 53 states, 53 states have (on average 5.169811320754717) internal successors, (274), 53 states have internal predecessors, (274), 0 states have call successors, (0), 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 03:14:03,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:14:03,877 INFO L93 Difference]: Finished difference Result 13602 states and 17278 transitions. [2023-11-29 03:14:03,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-11-29 03:14:03,878 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 5.169811320754717) internal successors, (274), 53 states have internal predecessors, (274), 0 states have call successors, (0), 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 99 [2023-11-29 03:14:03,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:14:03,884 INFO L225 Difference]: With dead ends: 13602 [2023-11-29 03:14:03,884 INFO L226 Difference]: Without dead ends: 11266 [2023-11-29 03:14:03,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2797 ImplicationChecksByTransitivity, 23.4s TimeCoverageRelationStatistics Valid=1854, Invalid=10578, Unknown=0, NotChecked=0, Total=12432 [2023-11-29 03:14:03,889 INFO L413 NwaCegarLoop]: 1489 mSDtfsCounter, 22713 mSDsluCounter, 30098 mSDsCounter, 0 mSdLazyCounter, 1999 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22713 SdHoareTripleChecker+Valid, 31587 SdHoareTripleChecker+Invalid, 2115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-29 03:14:03,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22713 Valid, 31587 Invalid, 2115 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [116 Valid, 1999 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-29 03:14:03,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11266 states. [2023-11-29 03:14:05,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11266 to 10846. [2023-11-29 03:14:05,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10846 states, 10844 states have (on average 1.2890077462191074) internal successors, (13978), 10845 states have internal predecessors, (13978), 0 states have call successors, (0), 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 03:14:05,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10846 states to 10846 states and 13978 transitions. [2023-11-29 03:14:05,055 INFO L78 Accepts]: Start accepts. Automaton has 10846 states and 13978 transitions. Word has length 99 [2023-11-29 03:14:05,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:14:05,055 INFO L495 AbstractCegarLoop]: Abstraction has 10846 states and 13978 transitions. [2023-11-29 03:14:05,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 5.169811320754717) internal successors, (274), 53 states have internal predecessors, (274), 0 states have call successors, (0), 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 03:14:05,055 INFO L276 IsEmpty]: Start isEmpty. Operand 10846 states and 13978 transitions. [2023-11-29 03:14:05,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-29 03:14:05,058 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:14:05,058 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 03:14:05,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 03:14:05,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 03:14:05,259 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:14:05,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:14:05,259 INFO L85 PathProgramCache]: Analyzing trace with hash 772410473, now seen corresponding path program 1 times [2023-11-29 03:14:05,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:14:05,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910801454] [2023-11-29 03:14:05,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:05,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:14:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:06,157 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 32 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:14:06,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:14:06,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910801454] [2023-11-29 03:14:06,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910801454] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:14:06,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334066707] [2023-11-29 03:14:06,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:06,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:14:06,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:14:06,158 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:14:06,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 03:14:06,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:06,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-29 03:14:06,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:14:09,077 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 32 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:14:09,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:14:13,771 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 30 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:14:13,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334066707] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:14:13,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:14:13,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 21] total 58 [2023-11-29 03:14:13,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718164775] [2023-11-29 03:14:13,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:14:13,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-11-29 03:14:13,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:14:13,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-11-29 03:14:13,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=2951, Unknown=0, NotChecked=0, Total=3306 [2023-11-29 03:14:13,774 INFO L87 Difference]: Start difference. First operand 10846 states and 13978 transitions. Second operand has 58 states, 58 states have (on average 4.637931034482759) internal successors, (269), 58 states have internal predecessors, (269), 0 states have call successors, (0), 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 03:15:17,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:15:17,147 INFO L93 Difference]: Finished difference Result 29573 states and 36591 transitions. [2023-11-29 03:15:17,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 286 states. [2023-11-29 03:15:17,147 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 4.637931034482759) internal successors, (269), 58 states have internal predecessors, (269), 0 states have call successors, (0), 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 99 [2023-11-29 03:15:17,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:15:17,161 INFO L225 Difference]: With dead ends: 29573 [2023-11-29 03:15:17,161 INFO L226 Difference]: Without dead ends: 23128 [2023-11-29 03:15:17,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 336 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45797 ImplicationChecksByTransitivity, 57.7s TimeCoverageRelationStatistics Valid=14530, Invalid=99376, Unknown=0, NotChecked=0, Total=113906 [2023-11-29 03:15:17,170 INFO L413 NwaCegarLoop]: 1612 mSDtfsCounter, 17888 mSDsluCounter, 34847 mSDsCounter, 0 mSdLazyCounter, 4424 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17888 SdHoareTripleChecker+Valid, 36459 SdHoareTripleChecker+Invalid, 4678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 4424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:15:17,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17888 Valid, 36459 Invalid, 4678 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [254 Valid, 4424 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-29 03:15:17,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23128 states. [2023-11-29 03:15:19,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23128 to 20368. [2023-11-29 03:15:19,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20368 states, 20366 states have (on average 1.2546891878621231) internal successors, (25553), 20367 states have internal predecessors, (25553), 0 states have call successors, (0), 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 03:15:19,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20368 states to 20368 states and 25553 transitions. [2023-11-29 03:15:19,898 INFO L78 Accepts]: Start accepts. Automaton has 20368 states and 25553 transitions. Word has length 99 [2023-11-29 03:15:19,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:15:19,898 INFO L495 AbstractCegarLoop]: Abstraction has 20368 states and 25553 transitions. [2023-11-29 03:15:19,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 4.637931034482759) internal successors, (269), 58 states have internal predecessors, (269), 0 states have call successors, (0), 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 03:15:19,898 INFO L276 IsEmpty]: Start isEmpty. Operand 20368 states and 25553 transitions. [2023-11-29 03:15:19,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 03:15:19,900 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:15:19,900 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 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 03:15:19,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-29 03:15:20,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 03:15:20,101 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:15:20,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:15:20,101 INFO L85 PathProgramCache]: Analyzing trace with hash 547688356, now seen corresponding path program 1 times [2023-11-29 03:15:20,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:15:20,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428769464] [2023-11-29 03:15:20,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:20,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:15:20,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:15:21,288 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:15:21,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:15:21,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428769464] [2023-11-29 03:15:21,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428769464] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:15:21,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675515238] [2023-11-29 03:15:21,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:21,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:15:21,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:15:21,289 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:15:21,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 03:15:21,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:15:21,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-29 03:15:21,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:15:23,999 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:15:23,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:15:29,096 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:15:29,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675515238] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:15:29,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:15:29,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 19] total 60 [2023-11-29 03:15:29,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606904703] [2023-11-29 03:15:29,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:15:29,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-11-29 03:15:29,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:15:29,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-11-29 03:15:29,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=3170, Unknown=0, NotChecked=0, Total=3540 [2023-11-29 03:15:29,099 INFO L87 Difference]: Start difference. First operand 20368 states and 25553 transitions. Second operand has 60 states, 60 states have (on average 4.55) internal successors, (273), 60 states have internal predecessors, (273), 0 states have call successors, (0), 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 03:16:26,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:16:26,366 INFO L93 Difference]: Finished difference Result 39679 states and 48903 transitions. [2023-11-29 03:16:26,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2023-11-29 03:16:26,367 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.55) internal successors, (273), 60 states have internal predecessors, (273), 0 states have call successors, (0), 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 100 [2023-11-29 03:16:26,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:16:26,385 INFO L225 Difference]: With dead ends: 39679 [2023-11-29 03:16:26,385 INFO L226 Difference]: Without dead ends: 25967 [2023-11-29 03:16:26,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 266 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25323 ImplicationChecksByTransitivity, 51.7s TimeCoverageRelationStatistics Valid=9929, Invalid=61627, Unknown=0, NotChecked=0, Total=71556 [2023-11-29 03:16:26,396 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 21057 mSDsluCounter, 31677 mSDsCounter, 0 mSdLazyCounter, 3041 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21057 SdHoareTripleChecker+Valid, 33256 SdHoareTripleChecker+Invalid, 3279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 3041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:16:26,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21057 Valid, 33256 Invalid, 3279 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [238 Valid, 3041 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-29 03:16:26,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25967 states. [2023-11-29 03:16:29,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25967 to 22977. [2023-11-29 03:16:29,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22977 states, 22975 states have (on average 1.2490533188248096) internal successors, (28697), 22976 states have internal predecessors, (28697), 0 states have call successors, (0), 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 03:16:29,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22977 states to 22977 states and 28697 transitions. [2023-11-29 03:16:29,891 INFO L78 Accepts]: Start accepts. Automaton has 22977 states and 28697 transitions. Word has length 100 [2023-11-29 03:16:29,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:16:29,891 INFO L495 AbstractCegarLoop]: Abstraction has 22977 states and 28697 transitions. [2023-11-29 03:16:29,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.55) internal successors, (273), 60 states have internal predecessors, (273), 0 states have call successors, (0), 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 03:16:29,891 INFO L276 IsEmpty]: Start isEmpty. Operand 22977 states and 28697 transitions. [2023-11-29 03:16:29,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 03:16:29,893 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:16:29,893 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-11-29 03:16:29,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 03:16:30,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 03:16:30,094 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:16:30,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:16:30,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1336758694, now seen corresponding path program 1 times [2023-11-29 03:16:30,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:16:30,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58808823] [2023-11-29 03:16:30,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:16:30,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:16:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:16:30,787 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 29 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:16:30,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:16:30,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58808823] [2023-11-29 03:16:30,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58808823] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:16:30,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203347111] [2023-11-29 03:16:30,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:16:30,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:16:30,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:16:30,788 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:16:30,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 03:16:30,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:16:30,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 03:16:30,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:16:32,017 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 47 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:16:32,017 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:16:33,926 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 40 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:16:33,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203347111] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:16:33,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:16:33,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 15] total 40 [2023-11-29 03:16:33,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947903151] [2023-11-29 03:16:33,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:16:33,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-29 03:16:33,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:16:33,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-29 03:16:33,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1415, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 03:16:33,929 INFO L87 Difference]: Start difference. First operand 22977 states and 28697 transitions. Second operand has 40 states, 40 states have (on average 6.875) internal successors, (275), 40 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:16:57,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:16:57,855 INFO L93 Difference]: Finished difference Result 67614 states and 82991 transitions. [2023-11-29 03:16:57,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2023-11-29 03:16:57,855 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 6.875) internal successors, (275), 40 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-11-29 03:16:57,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:16:57,887 INFO L225 Difference]: With dead ends: 67614 [2023-11-29 03:16:57,887 INFO L226 Difference]: Without dead ends: 47498 [2023-11-29 03:16:57,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10617 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=4009, Invalid=27853, Unknown=0, NotChecked=0, Total=31862 [2023-11-29 03:16:57,899 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 28068 mSDsluCounter, 16750 mSDsCounter, 0 mSdLazyCounter, 3176 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28068 SdHoareTripleChecker+Valid, 18305 SdHoareTripleChecker+Invalid, 3278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 3176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:16:57,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28068 Valid, 18305 Invalid, 3278 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [102 Valid, 3176 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-29 03:16:57,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47498 states. [2023-11-29 03:17:01,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47498 to 23753. [2023-11-29 03:17:01,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23753 states, 23751 states have (on average 1.2432318639215192) internal successors, (29528), 23752 states have internal predecessors, (29528), 0 states have call successors, (0), 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 03:17:02,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23753 states to 23753 states and 29528 transitions. [2023-11-29 03:17:02,022 INFO L78 Accepts]: Start accepts. Automaton has 23753 states and 29528 transitions. Word has length 100 [2023-11-29 03:17:02,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:02,022 INFO L495 AbstractCegarLoop]: Abstraction has 23753 states and 29528 transitions. [2023-11-29 03:17:02,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 6.875) internal successors, (275), 40 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:17:02,022 INFO L276 IsEmpty]: Start isEmpty. Operand 23753 states and 29528 transitions. [2023-11-29 03:17:02,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 03:17:02,024 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:02,024 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 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 03:17:02,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 03:17:02,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:02,224 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:02,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:02,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1092831919, now seen corresponding path program 1 times [2023-11-29 03:17:02,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:02,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792845228] [2023-11-29 03:17:02,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:02,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:02,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:02,713 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 19 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:02,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:02,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792845228] [2023-11-29 03:17:02,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792845228] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:17:02,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719678434] [2023-11-29 03:17:02,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:02,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:02,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:17:02,715 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:17:02,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 03:17:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:02,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 03:17:02,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:04,008 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 23 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:04,008 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:17:05,443 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 20 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:05,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719678434] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:17:05,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:17:05,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 15] total 40 [2023-11-29 03:17:05,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483990056] [2023-11-29 03:17:05,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:17:05,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-29 03:17:05,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:05,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-29 03:17:05,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1393, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 03:17:05,444 INFO L87 Difference]: Start difference. First operand 23753 states and 29528 transitions. Second operand has 40 states, 40 states have (on average 6.825) internal successors, (273), 40 states have internal predecessors, (273), 0 states have call successors, (0), 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 03:17:20,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:20,928 INFO L93 Difference]: Finished difference Result 69024 states and 84426 transitions. [2023-11-29 03:17:20,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-11-29 03:17:20,928 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 6.825) internal successors, (273), 40 states have internal predecessors, (273), 0 states have call successors, (0), 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 101 [2023-11-29 03:17:20,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:20,967 INFO L225 Difference]: With dead ends: 69024 [2023-11-29 03:17:20,967 INFO L226 Difference]: Without dead ends: 50712 [2023-11-29 03:17:20,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3808 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=2588, Invalid=10984, Unknown=0, NotChecked=0, Total=13572 [2023-11-29 03:17:20,977 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 26015 mSDsluCounter, 17908 mSDsCounter, 0 mSdLazyCounter, 1782 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26015 SdHoareTripleChecker+Valid, 19467 SdHoareTripleChecker+Invalid, 1891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:20,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26015 Valid, 19467 Invalid, 1891 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [109 Valid, 1782 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 03:17:21,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50712 states. [2023-11-29 03:17:26,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50712 to 28450. [2023-11-29 03:17:26,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28450 states, 28448 states have (on average 1.2378374578177729) internal successors, (35214), 28449 states have internal predecessors, (35214), 0 states have call successors, (0), 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 03:17:26,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28450 states to 28450 states and 35214 transitions. [2023-11-29 03:17:26,911 INFO L78 Accepts]: Start accepts. Automaton has 28450 states and 35214 transitions. Word has length 101 [2023-11-29 03:17:26,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:26,911 INFO L495 AbstractCegarLoop]: Abstraction has 28450 states and 35214 transitions. [2023-11-29 03:17:26,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 6.825) internal successors, (273), 40 states have internal predecessors, (273), 0 states have call successors, (0), 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 03:17:26,912 INFO L276 IsEmpty]: Start isEmpty. Operand 28450 states and 35214 transitions. [2023-11-29 03:17:26,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 03:17:26,913 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:26,914 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 03:17:26,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 03:17:27,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:27,114 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:27,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:27,115 INFO L85 PathProgramCache]: Analyzing trace with hash -575302877, now seen corresponding path program 1 times [2023-11-29 03:17:27,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:27,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649278842] [2023-11-29 03:17:27,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:27,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:27,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:28,878 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 23 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:28,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:28,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649278842] [2023-11-29 03:17:28,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649278842] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:17:28,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250134242] [2023-11-29 03:17:28,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:28,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:28,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:17:28,880 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:17:28,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 03:17:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:28,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-29 03:17:28,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:32,675 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 14 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:32,675 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:17:37,293 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 13 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:17:37,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250134242] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:17:37,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:17:37,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25, 24] total 70 [2023-11-29 03:17:37,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160062017] [2023-11-29 03:17:37,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:17:37,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-11-29 03:17:37,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:37,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-11-29 03:17:37,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=4512, Unknown=0, NotChecked=0, Total=4830 [2023-11-29 03:17:37,295 INFO L87 Difference]: Start difference. First operand 28450 states and 35214 transitions. Second operand has 70 states, 70 states have (on average 4.128571428571429) internal successors, (289), 70 states have internal predecessors, (289), 0 states have call successors, (0), 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 03:19:49,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:19:49,125 INFO L93 Difference]: Finished difference Result 59931 states and 73150 transitions. [2023-11-29 03:19:49,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 315 states. [2023-11-29 03:19:49,125 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 4.128571428571429) internal successors, (289), 70 states have internal predecessors, (289), 0 states have call successors, (0), 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 101 [2023-11-29 03:19:49,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:19:49,167 INFO L225 Difference]: With dead ends: 59931 [2023-11-29 03:19:49,167 INFO L226 Difference]: Without dead ends: 51048 [2023-11-29 03:19:49,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 381 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54369 ImplicationChecksByTransitivity, 113.1s TimeCoverageRelationStatistics Valid=12954, Invalid=133352, Unknown=0, NotChecked=0, Total=146306 [2023-11-29 03:19:49,181 INFO L413 NwaCegarLoop]: 1661 mSDtfsCounter, 31420 mSDsluCounter, 49010 mSDsCounter, 0 mSdLazyCounter, 8281 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31420 SdHoareTripleChecker+Valid, 50671 SdHoareTripleChecker+Invalid, 8523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 8281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2023-11-29 03:19:49,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31420 Valid, 50671 Invalid, 8523 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [242 Valid, 8281 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2023-11-29 03:19:49,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51048 states. [2023-11-29 03:19:55,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51048 to 29836. [2023-11-29 03:19:55,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29836 states, 29834 states have (on average 1.235268485620433) internal successors, (36853), 29835 states have internal predecessors, (36853), 0 states have call successors, (0), 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 03:19:55,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29836 states to 29836 states and 36853 transitions. [2023-11-29 03:19:55,356 INFO L78 Accepts]: Start accepts. Automaton has 29836 states and 36853 transitions. Word has length 101 [2023-11-29 03:19:55,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:19:55,356 INFO L495 AbstractCegarLoop]: Abstraction has 29836 states and 36853 transitions. [2023-11-29 03:19:55,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 4.128571428571429) internal successors, (289), 70 states have internal predecessors, (289), 0 states have call successors, (0), 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 03:19:55,357 INFO L276 IsEmpty]: Start isEmpty. Operand 29836 states and 36853 transitions. [2023-11-29 03:19:55,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 03:19:55,358 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:19:55,359 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 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 03:19:55,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 03:19:55,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-29 03:19:55,559 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:19:55,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:19:55,560 INFO L85 PathProgramCache]: Analyzing trace with hash 527574509, now seen corresponding path program 1 times [2023-11-29 03:19:55,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:19:55,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125249462] [2023-11-29 03:19:55,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:19:55,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:19:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:56,854 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:19:56,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:19:56,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125249462] [2023-11-29 03:19:56,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125249462] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:19:56,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767892135] [2023-11-29 03:19:56,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:19:56,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:19:56,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:19:56,856 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:19:56,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 03:19:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:56,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-29 03:19:56,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:19:59,774 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 38 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:19:59,774 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:20:06,533 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 37 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:20:06,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767892135] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:20:06,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:20:06,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 22, 23] total 68 [2023-11-29 03:20:06,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154335811] [2023-11-29 03:20:06,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:20:06,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-11-29 03:20:06,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:20:06,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-11-29 03:20:06,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=4237, Unknown=0, NotChecked=0, Total=4556 [2023-11-29 03:20:06,535 INFO L87 Difference]: Start difference. First operand 29836 states and 36853 transitions. Second operand has 68 states, 68 states have (on average 4.0) internal successors, (272), 68 states have internal predecessors, (272), 0 states have call successors, (0), 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 03:22:41,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:22:41,817 INFO L93 Difference]: Finished difference Result 59927 states and 73002 transitions. [2023-11-29 03:22:41,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 441 states. [2023-11-29 03:22:41,817 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 4.0) internal successors, (272), 68 states have internal predecessors, (272), 0 states have call successors, (0), 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 101 [2023-11-29 03:22:41,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:22:41,846 INFO L225 Difference]: With dead ends: 59927 [2023-11-29 03:22:41,846 INFO L226 Difference]: Without dead ends: 44510 [2023-11-29 03:22:41,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 504 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102557 ImplicationChecksByTransitivity, 138.5s TimeCoverageRelationStatistics Valid=18509, Invalid=237021, Unknown=0, NotChecked=0, Total=255530 [2023-11-29 03:22:41,862 INFO L413 NwaCegarLoop]: 1716 mSDtfsCounter, 33045 mSDsluCounter, 43592 mSDsCounter, 0 mSdLazyCounter, 8346 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33045 SdHoareTripleChecker+Valid, 45308 SdHoareTripleChecker+Invalid, 8530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 8346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:22:41,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33045 Valid, 45308 Invalid, 8530 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [184 Valid, 8346 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2023-11-29 03:22:41,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44510 states. [2023-11-29 03:22:48,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44510 to 29854. [2023-11-29 03:22:48,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29854 states, 29852 states have (on average 1.2351266246817634) internal successors, (36871), 29853 states have internal predecessors, (36871), 0 states have call successors, (0), 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 03:22:48,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29854 states to 29854 states and 36871 transitions. [2023-11-29 03:22:48,482 INFO L78 Accepts]: Start accepts. Automaton has 29854 states and 36871 transitions. Word has length 101 [2023-11-29 03:22:48,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:22:48,482 INFO L495 AbstractCegarLoop]: Abstraction has 29854 states and 36871 transitions. [2023-11-29 03:22:48,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 4.0) internal successors, (272), 68 states have internal predecessors, (272), 0 states have call successors, (0), 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 03:22:48,482 INFO L276 IsEmpty]: Start isEmpty. Operand 29854 states and 36871 transitions. [2023-11-29 03:22:48,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-29 03:22:48,483 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:22:48,484 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 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 03:22:48,488 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 03:22:48,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:22:48,684 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:22:48,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:22:48,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1770567870, now seen corresponding path program 1 times [2023-11-29 03:22:48,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:22:48,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827501181] [2023-11-29 03:22:48,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:22:48,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:22:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:22:50,426 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 19 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:22:50,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:22:50,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827501181] [2023-11-29 03:22:50,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827501181] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:22:50,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904823209] [2023-11-29 03:22:50,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:22:50,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:22:50,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:22:50,428 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:22:50,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b943ec-28a7-4227-bd04-90c569a5d6c2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 03:22:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:22:50,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-29 03:22:50,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:22:54,745 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 30 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:22:54,745 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:23:06,856 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 29 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:23:06,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904823209] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:23:06,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:23:06,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 30, 31] total 86 [2023-11-29 03:23:06,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334543117] [2023-11-29 03:23:06,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:23:06,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2023-11-29 03:23:06,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:23:06,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2023-11-29 03:23:06,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=767, Invalid=6543, Unknown=0, NotChecked=0, Total=7310 [2023-11-29 03:23:06,859 INFO L87 Difference]: Start difference. First operand 29854 states and 36871 transitions. Second operand has 86 states, 86 states have (on average 3.302325581395349) internal successors, (284), 86 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)