./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.10.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0772654-5930-485b-97d7-412b26a47c5b/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0772654-5930-485b-97d7-412b26a47c5b/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0772654-5930-485b-97d7-412b26a47c5b/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0772654-5930-485b-97d7-412b26a47c5b/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.10.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0772654-5930-485b-97d7-412b26a47c5b/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0772654-5930-485b-97d7-412b26a47c5b/bin/uautomizer-verify-uTZkv6EMXl --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 906e84f0a25a0f5132fcddd369ea6157dd86409b963593c3fbd2737ae25908f1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:16:58,869 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:16:59,005 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0772654-5930-485b-97d7-412b26a47c5b/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:16:59,010 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:16:59,012 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:16:59,053 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:16:59,055 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:16:59,056 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:16:59,057 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:16:59,062 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:16:59,064 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:16:59,065 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:16:59,065 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:16:59,067 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:16:59,068 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:16:59,068 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:16:59,069 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:16:59,069 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:16:59,070 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:16:59,070 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:16:59,071 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:16:59,071 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:16:59,072 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:16:59,072 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:16:59,073 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:16:59,074 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:16:59,074 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:16:59,075 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:16:59,075 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:16:59,076 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:16:59,077 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:16:59,078 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:16:59,078 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:16:59,078 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:16:59,079 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:16:59,079 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:16:59,079 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:16:59,079 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:16:59,080 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:16:59,080 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_d0772654-5930-485b-97d7-412b26a47c5b/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0772654-5930-485b-97d7-412b26a47c5b/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 906e84f0a25a0f5132fcddd369ea6157dd86409b963593c3fbd2737ae25908f1 [2023-11-12 02:16:59,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:16:59,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:16:59,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:16:59,459 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:16:59,460 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:16:59,461 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0772654-5930-485b-97d7-412b26a47c5b/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.10.cil-1.c [2023-11-12 02:17:02,690 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:17:03,615 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:17:03,616 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0772654-5930-485b-97d7-412b26a47c5b/sv-benchmarks/c/combinations/Problem05_label46+token_ring.10.cil-1.c [2023-11-12 02:17:03,675 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0772654-5930-485b-97d7-412b26a47c5b/bin/uautomizer-verify-uTZkv6EMXl/data/0b59368e9/22b862b16c5842ba88423c85b1409c38/FLAGc589d71f8 [2023-11-12 02:17:03,692 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0772654-5930-485b-97d7-412b26a47c5b/bin/uautomizer-verify-uTZkv6EMXl/data/0b59368e9/22b862b16c5842ba88423c85b1409c38 [2023-11-12 02:17:03,698 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:17:03,700 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:17:03,701 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:17:03,702 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:17:03,708 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:17:03,709 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:17:03" (1/1) ... [2023-11-12 02:17:03,710 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b9c7f25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:03, skipping insertion in model container [2023-11-12 02:17:03,710 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:17:03" (1/1) ... [2023-11-12 02:17:04,023 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:17:06,658 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_d0772654-5930-485b-97d7-412b26a47c5b/sv-benchmarks/c/combinations/Problem05_label46+token_ring.10.cil-1.c[382357,382370] [2023-11-12 02:17:06,692 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_d0772654-5930-485b-97d7-412b26a47c5b/sv-benchmarks/c/combinations/Problem05_label46+token_ring.10.cil-1.c[383339,383352] [2023-11-12 02:17:07,075 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:17:07,089 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:17:08,411 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_d0772654-5930-485b-97d7-412b26a47c5b/sv-benchmarks/c/combinations/Problem05_label46+token_ring.10.cil-1.c[382357,382370] [2023-11-12 02:17:08,414 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_d0772654-5930-485b-97d7-412b26a47c5b/sv-benchmarks/c/combinations/Problem05_label46+token_ring.10.cil-1.c[383339,383352] [2023-11-12 02:17:08,437 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:17:08,526 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:17:08,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08 WrapperNode [2023-11-12 02:17:08,527 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:17:08,528 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:17:08,529 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:17:08,529 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:17:08,537 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08" (1/1) ... [2023-11-12 02:17:08,635 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08" (1/1) ... [2023-11-12 02:17:09,165 INFO L138 Inliner]: procedures = 64, calls = 72, calls flagged for inlining = 41, calls inlined = 41, statements flattened = 13114 [2023-11-12 02:17:09,165 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:17:09,166 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:17:09,166 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:17:09,166 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:17:09,176 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08" (1/1) ... [2023-11-12 02:17:09,177 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08" (1/1) ... [2023-11-12 02:17:09,263 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08" (1/1) ... [2023-11-12 02:17:09,263 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08" (1/1) ... [2023-11-12 02:17:09,508 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08" (1/1) ... [2023-11-12 02:17:09,565 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08" (1/1) ... [2023-11-12 02:17:09,604 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08" (1/1) ... [2023-11-12 02:17:09,634 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08" (1/1) ... [2023-11-12 02:17:09,723 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:17:09,725 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:17:09,725 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:17:09,726 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:17:09,727 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08" (1/1) ... [2023-11-12 02:17:09,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:17:09,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0772654-5930-485b-97d7-412b26a47c5b/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:09,772 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0772654-5930-485b-97d7-412b26a47c5b/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:09,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0772654-5930-485b-97d7-412b26a47c5b/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:17:09,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:17:09,820 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-12 02:17:09,820 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-12 02:17:09,820 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-12 02:17:09,820 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-12 02:17:09,821 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-12 02:17:09,821 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-12 02:17:09,821 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-11-12 02:17:09,821 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-11-12 02:17:09,823 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-12 02:17:09,823 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-12 02:17:09,823 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-12 02:17:09,824 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-12 02:17:09,824 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-12 02:17:09,824 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-12 02:17:09,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:17:09,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:17:09,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:17:09,981 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:17:09,984 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:17:19,912 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:17:19,954 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:17:19,955 INFO L302 CfgBuilder]: Removed 14 assume(true) statements. [2023-11-12 02:17:19,962 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:17:19 BoogieIcfgContainer [2023-11-12 02:17:19,962 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:17:19,969 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:17:19,969 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:17:19,973 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:17:19,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:17:03" (1/3) ... [2023-11-12 02:17:19,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8ad0a7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:17:19, skipping insertion in model container [2023-11-12 02:17:19,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08" (2/3) ... [2023-11-12 02:17:19,979 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8ad0a7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:17:19, skipping insertion in model container [2023-11-12 02:17:19,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:17:19" (3/3) ... [2023-11-12 02:17:19,981 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.10.cil-1.c [2023-11-12 02:17:20,002 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:17:20,002 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 02:17:20,132 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:17:20,140 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;@10cc78d7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:17:20,140 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-12 02:17:20,156 INFO L276 IsEmpty]: Start isEmpty. Operand has 2534 states, 2498 states have (on average 1.8422738190552441) internal successors, (4602), 2503 states have internal predecessors, (4602), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-12 02:17:20,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-12 02:17:20,180 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:20,181 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:20,182 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:20,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:20,188 INFO L85 PathProgramCache]: Analyzing trace with hash -810078408, now seen corresponding path program 1 times [2023-11-12 02:17:20,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:20,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98381076] [2023-11-12 02:17:20,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:20,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:20,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:20,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:17:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:20,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-12 02:17:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:20,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-12 02:17:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:21,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-12 02:17:21,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:21,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-12 02:17:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:21,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:21,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:21,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98381076] [2023-11-12 02:17:21,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98381076] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:21,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:21,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:17:21,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330089139] [2023-11-12 02:17:21,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:21,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:17:21,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:21,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:17:21,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:17:21,125 INFO L87 Difference]: Start difference. First operand has 2534 states, 2498 states have (on average 1.8422738190552441) internal successors, (4602), 2503 states have internal predecessors, (4602), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:17:23,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:23,770 INFO L93 Difference]: Finished difference Result 5177 states and 9496 transitions. [2023-11-12 02:17:23,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:17:23,773 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2023-11-12 02:17:23,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:23,807 INFO L225 Difference]: With dead ends: 5177 [2023-11-12 02:17:23,807 INFO L226 Difference]: Without dead ends: 2586 [2023-11-12 02:17:23,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:17:23,822 INFO L413 NwaCegarLoop]: 4348 mSDtfsCounter, 913 mSDsluCounter, 12453 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 16801 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-12 02:17:23,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [935 Valid, 16801 Invalid, 936 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [56 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-12 02:17:23,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2586 states. [2023-11-12 02:17:24,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2586 to 2466. [2023-11-12 02:17:24,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2432 states have (on average 1.826891447368421) internal successors, (4443), 2435 states have internal predecessors, (4443), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-12 02:17:24,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4493 transitions. [2023-11-12 02:17:24,131 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4493 transitions. Word has length 157 [2023-11-12 02:17:24,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:24,133 INFO L495 AbstractCegarLoop]: Abstraction has 2466 states and 4493 transitions. [2023-11-12 02:17:24,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:17:24,134 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4493 transitions. [2023-11-12 02:17:24,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-12 02:17:24,151 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:24,152 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:24,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:17:24,152 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:24,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:24,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1148365958, now seen corresponding path program 1 times [2023-11-12 02:17:24,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:24,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647741734] [2023-11-12 02:17:24,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:24,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:24,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:17:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:24,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-12 02:17:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:24,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-12 02:17:24,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:24,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-12 02:17:24,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:24,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-12 02:17:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:24,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:24,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:24,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647741734] [2023-11-12 02:17:24,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647741734] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:24,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:24,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:17:24,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458619011] [2023-11-12 02:17:24,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:24,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:17:24,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:24,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:17:24,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:17:24,683 INFO L87 Difference]: Start difference. First operand 2466 states and 4493 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:17:29,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:29,848 INFO L93 Difference]: Finished difference Result 3395 states and 5991 transitions. [2023-11-12 02:17:29,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 02:17:29,849 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2023-11-12 02:17:29,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:29,875 INFO L225 Difference]: With dead ends: 3395 [2023-11-12 02:17:29,875 INFO L226 Difference]: Without dead ends: 3068 [2023-11-12 02:17:29,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:17:29,885 INFO L413 NwaCegarLoop]: 4482 mSDtfsCounter, 5258 mSDsluCounter, 17632 mSDsCounter, 0 mSdLazyCounter, 3182 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5275 SdHoareTripleChecker+Valid, 22114 SdHoareTripleChecker+Invalid, 3248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-12 02:17:29,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5275 Valid, 22114 Invalid, 3248 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 3182 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-12 02:17:29,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3068 states. [2023-11-12 02:17:30,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3068 to 2809. [2023-11-12 02:17:30,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2809 states, 2746 states have (on average 1.7986161689730518) internal successors, (4939), 2751 states have internal predecessors, (4939), 47 states have call successors, (47), 13 states have call predecessors, (47), 14 states have return successors, (52), 46 states have call predecessors, (52), 45 states have call successors, (52) [2023-11-12 02:17:30,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2809 states to 2809 states and 5038 transitions. [2023-11-12 02:17:30,032 INFO L78 Accepts]: Start accepts. Automaton has 2809 states and 5038 transitions. Word has length 157 [2023-11-12 02:17:30,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:30,034 INFO L495 AbstractCegarLoop]: Abstraction has 2809 states and 5038 transitions. [2023-11-12 02:17:30,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:17:30,035 INFO L276 IsEmpty]: Start isEmpty. Operand 2809 states and 5038 transitions. [2023-11-12 02:17:30,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-12 02:17:30,040 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:30,041 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:30,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:17:30,046 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:30,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:30,047 INFO L85 PathProgramCache]: Analyzing trace with hash 250587644, now seen corresponding path program 1 times [2023-11-12 02:17:30,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:30,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515089331] [2023-11-12 02:17:30,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:30,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:30,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:30,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:17:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:30,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-12 02:17:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:30,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-12 02:17:30,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:30,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-12 02:17:30,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:30,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-12 02:17:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:30,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:30,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:30,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515089331] [2023-11-12 02:17:30,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515089331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:30,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:30,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:17:30,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831014688] [2023-11-12 02:17:30,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:30,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:17:30,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:30,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:17:30,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:17:30,465 INFO L87 Difference]: Start difference. First operand 2809 states and 5038 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:17:35,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:35,174 INFO L93 Difference]: Finished difference Result 4578 states and 7866 transitions. [2023-11-12 02:17:35,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 02:17:35,175 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2023-11-12 02:17:35,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:35,201 INFO L225 Difference]: With dead ends: 4578 [2023-11-12 02:17:35,201 INFO L226 Difference]: Without dead ends: 3910 [2023-11-12 02:17:35,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:17:35,215 INFO L413 NwaCegarLoop]: 4429 mSDtfsCounter, 5299 mSDsluCounter, 17557 mSDsCounter, 0 mSdLazyCounter, 2888 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5316 SdHoareTripleChecker+Valid, 21986 SdHoareTripleChecker+Invalid, 2962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:17:35,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5316 Valid, 21986 Invalid, 2962 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [74 Valid, 2888 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-12 02:17:35,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3910 states. [2023-11-12 02:17:35,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3910 to 3443. [2023-11-12 02:17:35,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3443 states, 3328 states have (on average 1.7548076923076923) internal successors, (5840), 3335 states have internal predecessors, (5840), 85 states have call successors, (85), 25 states have call predecessors, (85), 28 states have return successors, (100), 86 states have call predecessors, (100), 83 states have call successors, (100) [2023-11-12 02:17:35,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3443 states to 3443 states and 6025 transitions. [2023-11-12 02:17:35,401 INFO L78 Accepts]: Start accepts. Automaton has 3443 states and 6025 transitions. Word has length 157 [2023-11-12 02:17:35,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:35,401 INFO L495 AbstractCegarLoop]: Abstraction has 3443 states and 6025 transitions. [2023-11-12 02:17:35,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:17:35,402 INFO L276 IsEmpty]: Start isEmpty. Operand 3443 states and 6025 transitions. [2023-11-12 02:17:35,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-12 02:17:35,406 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:35,407 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:35,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:17:35,407 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:35,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:35,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1366852806, now seen corresponding path program 1 times [2023-11-12 02:17:35,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:35,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082388386] [2023-11-12 02:17:35,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:35,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:35,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:17:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:35,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-12 02:17:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:35,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-12 02:17:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:35,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-12 02:17:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:35,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-12 02:17:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:35,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:35,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:35,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082388386] [2023-11-12 02:17:35,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082388386] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:35,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:35,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:17:35,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381604093] [2023-11-12 02:17:35,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:35,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:17:35,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:35,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:17:35,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:17:35,805 INFO L87 Difference]: Start difference. First operand 3443 states and 6025 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:17:40,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:40,749 INFO L93 Difference]: Finished difference Result 6894 states and 11525 transitions. [2023-11-12 02:17:40,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 02:17:40,749 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2023-11-12 02:17:40,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:40,789 INFO L225 Difference]: With dead ends: 6894 [2023-11-12 02:17:40,789 INFO L226 Difference]: Without dead ends: 5592 [2023-11-12 02:17:40,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:17:40,798 INFO L413 NwaCegarLoop]: 4480 mSDtfsCounter, 5258 mSDsluCounter, 17632 mSDsCounter, 0 mSdLazyCounter, 3177 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5275 SdHoareTripleChecker+Valid, 22112 SdHoareTripleChecker+Invalid, 3245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-12 02:17:40,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5275 Valid, 22112 Invalid, 3245 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [68 Valid, 3177 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-12 02:17:40,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5592 states. [2023-11-12 02:17:41,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5592 to 4713. [2023-11-12 02:17:41,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4713 states, 4494 states have (on average 1.7009345794392523) internal successors, (7644), 4505 states have internal predecessors, (7644), 161 states have call successors, (161), 49 states have call predecessors, (161), 56 states have return successors, (202), 166 states have call predecessors, (202), 159 states have call successors, (202) [2023-11-12 02:17:41,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4713 states to 4713 states and 8007 transitions. [2023-11-12 02:17:41,080 INFO L78 Accepts]: Start accepts. Automaton has 4713 states and 8007 transitions. Word has length 157 [2023-11-12 02:17:41,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:41,081 INFO L495 AbstractCegarLoop]: Abstraction has 4713 states and 8007 transitions. [2023-11-12 02:17:41,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:17:41,081 INFO L276 IsEmpty]: Start isEmpty. Operand 4713 states and 8007 transitions. [2023-11-12 02:17:41,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-12 02:17:41,086 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:41,087 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:41,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:17:41,087 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:41,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:41,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1003386308, now seen corresponding path program 1 times [2023-11-12 02:17:41,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:41,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503452210] [2023-11-12 02:17:41,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:41,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:41,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:41,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:17:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:41,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-12 02:17:41,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:41,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-12 02:17:41,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:41,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-12 02:17:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:41,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-12 02:17:41,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:41,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:41,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:41,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503452210] [2023-11-12 02:17:41,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503452210] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:41,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:41,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:17:41,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079499323] [2023-11-12 02:17:41,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:41,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:17:41,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:41,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:17:41,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:17:41,512 INFO L87 Difference]: Start difference. First operand 4713 states and 8007 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:17:46,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:46,362 INFO L93 Difference]: Finished difference Result 11524 states and 18857 transitions. [2023-11-12 02:17:46,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 02:17:46,363 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2023-11-12 02:17:46,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:46,428 INFO L225 Difference]: With dead ends: 11524 [2023-11-12 02:17:46,428 INFO L226 Difference]: Without dead ends: 8952 [2023-11-12 02:17:46,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:17:46,442 INFO L413 NwaCegarLoop]: 4478 mSDtfsCounter, 5258 mSDsluCounter, 17632 mSDsCounter, 0 mSdLazyCounter, 3158 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5275 SdHoareTripleChecker+Valid, 22110 SdHoareTripleChecker+Invalid, 3226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:17:46,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5275 Valid, 22110 Invalid, 3226 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [68 Valid, 3158 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-12 02:17:46,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8952 states.