./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.08.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_1c5a206a-ff24-4268-b708-a2a911827ab1/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a206a-ff24-4268-b708-a2a911827ab1/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_1c5a206a-ff24-4268-b708-a2a911827ab1/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a206a-ff24-4268-b708-a2a911827ab1/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.08.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a206a-ff24-4268-b708-a2a911827ab1/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_1c5a206a-ff24-4268-b708-a2a911827ab1/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 06a966cd103a9c61c8e9ebcc5255a2d5a7d1dd56b172674853cec63a372f0a43 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:34:26,153 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:34:26,255 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a206a-ff24-4268-b708-a2a911827ab1/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:34:26,261 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:34:26,262 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:34:26,287 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:34:26,288 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:34:26,289 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:34:26,290 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:34:26,290 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:34:26,291 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:34:26,292 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:34:26,292 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:34:26,293 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:34:26,294 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:34:26,294 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:34:26,295 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:34:26,295 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:34:26,296 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:34:26,296 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:34:26,297 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:34:26,304 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:34:26,305 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:34:26,305 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:34:26,305 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:34:26,306 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:34:26,307 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:34:26,307 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:34:26,307 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:34:26,308 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:34:26,309 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:34:26,310 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:34:26,310 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:34:26,310 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:34:26,310 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:34:26,311 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:34:26,311 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:34:26,311 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:34:26,311 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:34:26,312 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_1c5a206a-ff24-4268-b708-a2a911827ab1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a206a-ff24-4268-b708-a2a911827ab1/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06a966cd103a9c61c8e9ebcc5255a2d5a7d1dd56b172674853cec63a372f0a43 [2023-11-12 02:34:26,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:34:26,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:34:26,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:34:26,712 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:34:26,713 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:34:26,714 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a206a-ff24-4268-b708-a2a911827ab1/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.08.cil-1.c [2023-11-12 02:34:29,823 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:34:30,736 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:34:30,737 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a206a-ff24-4268-b708-a2a911827ab1/sv-benchmarks/c/combinations/Problem05_label48+token_ring.08.cil-1.c [2023-11-12 02:34:30,797 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a206a-ff24-4268-b708-a2a911827ab1/bin/uautomizer-verify-uTZkv6EMXl/data/255f53de2/a7b914a538e74471b592157728bab18c/FLAG3498f548f [2023-11-12 02:34:30,812 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a206a-ff24-4268-b708-a2a911827ab1/bin/uautomizer-verify-uTZkv6EMXl/data/255f53de2/a7b914a538e74471b592157728bab18c [2023-11-12 02:34:30,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:34:30,819 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:34:30,821 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:34:30,827 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:34:30,834 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:34:30,837 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:34:30" (1/1) ... [2023-11-12 02:34:30,838 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c763e35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:34:30, skipping insertion in model container [2023-11-12 02:34:30,839 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:34:30" (1/1) ... [2023-11-12 02:34:31,104 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:34:33,749 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_1c5a206a-ff24-4268-b708-a2a911827ab1/sv-benchmarks/c/combinations/Problem05_label48+token_ring.08.cil-1.c[375709,375722] [2023-11-12 02:34:33,794 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_1c5a206a-ff24-4268-b708-a2a911827ab1/sv-benchmarks/c/combinations/Problem05_label48+token_ring.08.cil-1.c[383339,383352] [2023-11-12 02:34:34,093 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:34:34,109 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:34:35,347 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_1c5a206a-ff24-4268-b708-a2a911827ab1/sv-benchmarks/c/combinations/Problem05_label48+token_ring.08.cil-1.c[375709,375722] [2023-11-12 02:34:35,358 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_1c5a206a-ff24-4268-b708-a2a911827ab1/sv-benchmarks/c/combinations/Problem05_label48+token_ring.08.cil-1.c[383339,383352] [2023-11-12 02:34:35,376 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:34:35,441 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:34:35,442 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:34:35 WrapperNode [2023-11-12 02:34:35,442 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:34:35,443 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:34:35,444 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:34:35,444 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:34:35,453 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:34:35" (1/1) ... [2023-11-12 02:34:35,553 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:34:35" (1/1) ... [2023-11-12 02:34:36,100 INFO L138 Inliner]: procedures = 60, calls = 65, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 12988 [2023-11-12 02:34:36,101 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:34:36,102 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:34:36,102 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:34:36,102 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:34:36,113 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:34:35" (1/1) ... [2023-11-12 02:34:36,114 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:34:35" (1/1) ... [2023-11-12 02:34:36,327 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:34:35" (1/1) ... [2023-11-12 02:34:36,340 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:34:35" (1/1) ... [2023-11-12 02:34:36,547 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:34:35" (1/1) ... [2023-11-12 02:34:36,620 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:34:35" (1/1) ... [2023-11-12 02:34:36,692 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:34:35" (1/1) ... [2023-11-12 02:34:36,722 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:34:35" (1/1) ... [2023-11-12 02:34:36,784 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:34:36,786 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:34:36,786 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:34:36,786 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:34:36,788 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:34:35" (1/1) ... [2023-11-12 02:34:36,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:34:36,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a206a-ff24-4268-b708-a2a911827ab1/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:34:36,822 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a206a-ff24-4268-b708-a2a911827ab1/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:34:36,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c5a206a-ff24-4268-b708-a2a911827ab1/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:34:36,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:34:36,882 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-12 02:34:36,882 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-12 02:34:36,883 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-12 02:34:36,883 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-12 02:34:36,883 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-12 02:34:36,883 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-12 02:34:36,884 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-12 02:34:36,884 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-12 02:34:36,885 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-12 02:34:36,886 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-12 02:34:36,886 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-12 02:34:36,886 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-12 02:34:36,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:34:36,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:34:36,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:34:37,058 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:34:37,061 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:34:47,037 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:34:47,074 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:34:47,074 INFO L302 CfgBuilder]: Removed 12 assume(true) statements. [2023-11-12 02:34:47,081 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:34:47 BoogieIcfgContainer [2023-11-12 02:34:47,081 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:34:47,084 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:34:47,085 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:34:47,088 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:34:47,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:34:30" (1/3) ... [2023-11-12 02:34:47,090 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc13a01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:34:47, skipping insertion in model container [2023-11-12 02:34:47,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:34:35" (2/3) ... [2023-11-12 02:34:47,091 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc13a01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:34:47, skipping insertion in model container [2023-11-12 02:34:47,092 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:34:47" (3/3) ... [2023-11-12 02:34:47,093 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.08.cil-1.c [2023-11-12 02:34:47,112 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:34:47,112 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 02:34:47,225 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:34:47,233 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;@4031ece9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:34:47,234 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-12 02:34:47,249 INFO L276 IsEmpty]: Start isEmpty. Operand has 2474 states, 2443 states have (on average 1.845272206303725) internal successors, (4508), 2446 states have internal predecessors, (4508), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-12 02:34:47,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-12 02:34:47,283 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:34:47,284 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] [2023-11-12 02:34:47,285 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:34:47,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:34:47,293 INFO L85 PathProgramCache]: Analyzing trace with hash -372695446, now seen corresponding path program 1 times [2023-11-12 02:34:47,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:34:47,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514190974] [2023-11-12 02:34:47,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:34:47,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:34:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:47,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:34:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:47,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:34:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:47,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-12 02:34:47,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:47,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-12 02:34:47,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:47,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-12 02:34:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:47,970 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 02:34:47,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:34:47,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514190974] [2023-11-12 02:34:47,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514190974] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:34:47,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:34:47,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:34:47,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497572835] [2023-11-12 02:34:47,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:34:47,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:34:47,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:34:48,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:34:48,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:34:48,036 INFO L87 Difference]: Start difference. First operand has 2474 states, 2443 states have (on average 1.845272206303725) internal successors, (4508), 2446 states have internal predecessors, (4508), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:34:50,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:34:50,128 INFO L93 Difference]: Finished difference Result 5040 states and 9262 transitions. [2023-11-12 02:34:50,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:34:50,131 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2023-11-12 02:34:50,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:34:50,164 INFO L225 Difference]: With dead ends: 5040 [2023-11-12 02:34:50,165 INFO L226 Difference]: Without dead ends: 2505 [2023-11-12 02:34:50,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:34:50,181 INFO L413 NwaCegarLoop]: 4291 mSDtfsCounter, 747 mSDsluCounter, 12379 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 16670 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:34:50,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 16670 Invalid, 776 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-12 02:34:50,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2505 states. [2023-11-12 02:34:50,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2505 to 2407. [2023-11-12 02:34:50,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2407 states, 2377 states have (on average 1.831299957930164) internal successors, (4353), 2379 states have internal predecessors, (4353), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-12 02:34:50,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2407 states to 2407 states and 4397 transitions. [2023-11-12 02:34:50,331 INFO L78 Accepts]: Start accepts. Automaton has 2407 states and 4397 transitions. Word has length 134 [2023-11-12 02:34:50,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:34:50,332 INFO L495 AbstractCegarLoop]: Abstraction has 2407 states and 4397 transitions. [2023-11-12 02:34:50,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:34:50,332 INFO L276 IsEmpty]: Start isEmpty. Operand 2407 states and 4397 transitions. [2023-11-12 02:34:50,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-12 02:34:50,336 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:34:50,336 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] [2023-11-12 02:34:50,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:34:50,337 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:34:50,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:34:50,340 INFO L85 PathProgramCache]: Analyzing trace with hash 333901160, now seen corresponding path program 1 times [2023-11-12 02:34:50,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:34:50,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467435723] [2023-11-12 02:34:50,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:34:50,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:34:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:50,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:34:50,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:50,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:34:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:50,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-12 02:34:50,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:50,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-12 02:34:50,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:50,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-12 02:34:50,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:50,784 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 02:34:50,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:34:50,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467435723] [2023-11-12 02:34:50,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467435723] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:34:50,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:34:50,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:34:50,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002964146] [2023-11-12 02:34:50,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:34:50,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:34:50,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:34:50,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:34:50,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:34:50,789 INFO L87 Difference]: Start difference. First operand 2407 states and 4397 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:34:53,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:34:53,888 INFO L93 Difference]: Finished difference Result 3153 states and 5582 transitions. [2023-11-12 02:34:53,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:34:53,889 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2023-11-12 02:34:53,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:34:53,980 INFO L225 Difference]: With dead ends: 3153 [2023-11-12 02:34:53,981 INFO L226 Difference]: Without dead ends: 2883 [2023-11-12 02:34:53,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:34:53,985 INFO L413 NwaCegarLoop]: 4200 mSDtfsCounter, 5067 mSDsluCounter, 12602 mSDsCounter, 0 mSdLazyCounter, 1593 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5082 SdHoareTripleChecker+Valid, 16802 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:34:53,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5082 Valid, 16802 Invalid, 1685 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [92 Valid, 1593 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-12 02:34:53,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2883 states. [2023-11-12 02:34:54,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2883 to 2688. [2023-11-12 02:34:54,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2688 states, 2634 states have (on average 1.8048595292331056) internal successors, (4754), 2637 states have internal predecessors, (4754), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2023-11-12 02:34:54,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2688 states to 2688 states and 4835 transitions. [2023-11-12 02:34:54,095 INFO L78 Accepts]: Start accepts. Automaton has 2688 states and 4835 transitions. Word has length 134 [2023-11-12 02:34:54,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:34:54,096 INFO L495 AbstractCegarLoop]: Abstraction has 2688 states and 4835 transitions. [2023-11-12 02:34:54,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:34:54,097 INFO L276 IsEmpty]: Start isEmpty. Operand 2688 states and 4835 transitions. [2023-11-12 02:34:54,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-12 02:34:54,099 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:34:54,099 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] [2023-11-12 02:34:54,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:34:54,100 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:34:54,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:34:54,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1372602388, now seen corresponding path program 1 times [2023-11-12 02:34:54,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:34:54,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360891287] [2023-11-12 02:34:54,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:34:54,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:34:54,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:54,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:34:54,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:54,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:34:54,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:54,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-12 02:34:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:54,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-12 02:34:54,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:54,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-12 02:34:54,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:54,458 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 02:34:54,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:34:54,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360891287] [2023-11-12 02:34:54,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360891287] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:34:54,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:34:54,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:34:54,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462909556] [2023-11-12 02:34:54,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:34:54,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:34:54,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:34:54,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:34:54,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:34:54,462 INFO L87 Difference]: Start difference. First operand 2688 states and 4835 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:34:58,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:34:58,482 INFO L93 Difference]: Finished difference Result 3824 states and 6638 transitions. [2023-11-12 02:34:58,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 02:34:58,483 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2023-11-12 02:34:58,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:34:58,508 INFO L225 Difference]: With dead ends: 3824 [2023-11-12 02:34:58,508 INFO L226 Difference]: Without dead ends: 3273 [2023-11-12 02:34:58,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:34:58,514 INFO L413 NwaCegarLoop]: 4383 mSDtfsCounter, 5086 mSDsluCounter, 17273 mSDsCounter, 0 mSdLazyCounter, 2531 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5101 SdHoareTripleChecker+Valid, 21656 SdHoareTripleChecker+Invalid, 2584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:34:58,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5101 Valid, 21656 Invalid, 2584 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [53 Valid, 2531 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-12 02:34:58,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3273 states. [2023-11-12 02:34:58,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3273 to 2950. [2023-11-12 02:34:58,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2950 states, 2872 states have (on average 1.7816852367688023) internal successors, (5117), 2876 states have internal predecessors, (5117), 56 states have call successors, (56), 18 states have call predecessors, (56), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2023-11-12 02:34:58,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2950 states to 2950 states and 5234 transitions. [2023-11-12 02:34:58,811 INFO L78 Accepts]: Start accepts. Automaton has 2950 states and 5234 transitions. Word has length 134 [2023-11-12 02:34:58,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:34:58,813 INFO L495 AbstractCegarLoop]: Abstraction has 2950 states and 5234 transitions. [2023-11-12 02:34:58,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:34:58,814 INFO L276 IsEmpty]: Start isEmpty. Operand 2950 states and 5234 transitions. [2023-11-12 02:34:58,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-12 02:34:58,819 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:34:58,820 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] [2023-11-12 02:34:58,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:34:58,822 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:34:58,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:34:58,823 INFO L85 PathProgramCache]: Analyzing trace with hash 629283882, now seen corresponding path program 1 times [2023-11-12 02:34:58,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:34:58,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333832498] [2023-11-12 02:34:58,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:34:58,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:34:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:59,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:34:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:59,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:34:59,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:59,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-12 02:34:59,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:59,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-12 02:34:59,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:59,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-12 02:34:59,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:34:59,186 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 02:34:59,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:34:59,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333832498] [2023-11-12 02:34:59,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333832498] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:34:59,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:34:59,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:34:59,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733446908] [2023-11-12 02:34:59,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:34:59,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:34:59,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:34:59,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:34:59,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:34:59,191 INFO L87 Difference]: Start difference. First operand 2950 states and 5234 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:35:02,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:35:02,736 INFO L93 Difference]: Finished difference Result 4813 states and 8183 transitions. [2023-11-12 02:35:02,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 02:35:02,737 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2023-11-12 02:35:02,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:35:02,771 INFO L225 Difference]: With dead ends: 4813 [2023-11-12 02:35:02,771 INFO L226 Difference]: Without dead ends: 4000 [2023-11-12 02:35:02,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:35:02,788 INFO L413 NwaCegarLoop]: 4210 mSDtfsCounter, 5166 mSDsluCounter, 16783 mSDsCounter, 0 mSdLazyCounter, 2151 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5181 SdHoareTripleChecker+Valid, 20993 SdHoareTripleChecker+Invalid, 2234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:35:02,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5181 Valid, 20993 Invalid, 2234 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [83 Valid, 2151 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-12 02:35:02,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4000 states. [2023-11-12 02:35:03,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4000 to 3475. [2023-11-12 02:35:03,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3475 states, 3349 states have (on average 1.74499850701702) internal successors, (5844), 3355 states have internal predecessors, (5844), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2023-11-12 02:35:03,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3475 states to 3475 states and 6037 transitions. [2023-11-12 02:35:03,091 INFO L78 Accepts]: Start accepts. Automaton has 3475 states and 6037 transitions. Word has length 134 [2023-11-12 02:35:03,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:35:03,092 INFO L495 AbstractCegarLoop]: Abstraction has 3475 states and 6037 transitions. [2023-11-12 02:35:03,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:35:03,093 INFO L276 IsEmpty]: Start isEmpty. Operand 3475 states and 6037 transitions. [2023-11-12 02:35:03,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-12 02:35:03,095 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:35:03,096 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] [2023-11-12 02:35:03,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:35:03,096 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:35:03,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:35:03,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1938538452, now seen corresponding path program 1 times [2023-11-12 02:35:03,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:35:03,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606929843] [2023-11-12 02:35:03,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:35:03,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:35:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:35:03,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:35:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:35:03,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:35:03,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:35:03,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-12 02:35:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:35:03,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-12 02:35:03,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:35:03,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-12 02:35:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:35:03,399 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 02:35:03,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:35:03,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606929843] [2023-11-12 02:35:03,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606929843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:35:03,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:35:03,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:35:03,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381263078] [2023-11-12 02:35:03,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:35:03,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:35:03,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:35:03,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:35:03,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:35:03,409 INFO L87 Difference]: Start difference. First operand 3475 states and 6037 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:35:06,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:35:06,912 INFO L93 Difference]: Finished difference Result 6718 states and 11142 transitions. [2023-11-12 02:35:06,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 02:35:06,918 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2023-11-12 02:35:06,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:35:06,952 INFO L225 Difference]: With dead ends: 6718 [2023-11-12 02:35:06,953 INFO L226 Difference]: Without dead ends: 5380 [2023-11-12 02:35:06,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:35:06,960 INFO L413 NwaCegarLoop]: 4381 mSDtfsCounter, 5084 mSDsluCounter, 17273 mSDsCounter, 0 mSdLazyCounter, 2520 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5099 SdHoareTripleChecker+Valid, 21654 SdHoareTripleChecker+Invalid, 2575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-12 02:35:06,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5099 Valid, 21654 Invalid, 2575 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 2520 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-12 02:35:06,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5380 states. [2023-11-12 02:35:07,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5380 to 4526. [2023-11-12 02:35:07,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4526 states, 4304 states have (on average 1.695631970260223) internal successors, (7298), 4314 states have internal predecessors, (7298), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2023-11-12 02:35:07,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4526 states to 4526 states and 7649 transitions. [2023-11-12 02:35:07,175 INFO L78 Accepts]: Start accepts. Automaton has 4526 states and 7649 transitions. Word has length 134 [2023-11-12 02:35:07,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:35:07,175 INFO L495 AbstractCegarLoop]: Abstraction has 4526 states and 7649 transitions. [2023-11-12 02:35:07,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:35:07,176 INFO L276 IsEmpty]: Start isEmpty. Operand 4526 states and 7649 transitions. [2023-11-12 02:35:07,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-12 02:35:07,180 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:35:07,180 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] [2023-11-12 02:35:07,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:35:07,181 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:35:07,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:35:07,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1467182102, now seen corresponding path program 1 times [2023-11-12 02:35:07,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:35:07,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309506358] [2023-11-12 02:35:07,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:35:07,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:35:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:35:07,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:35:07,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:35:07,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:35:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:35:07,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-12 02:35:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:35:07,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-12 02:35:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:35:07,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-12 02:35:07,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:35:07,446 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 02:35:07,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:35:07,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309506358] [2023-11-12 02:35:07,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309506358] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:35:07,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:35:07,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:35:07,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348557183] [2023-11-12 02:35:07,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:35:07,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:35:07,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:35:07,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:35:07,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:35:07,450 INFO L87 Difference]: Start difference. First operand 4526 states and 7649 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:35:11,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:35:11,034 INFO L93 Difference]: Finished difference Result 10520 states and 17064 transitions. [2023-11-12 02:35:11,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 02:35:11,036 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2023-11-12 02:35:11,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:35:11,081 INFO L225 Difference]: With dead ends: 10520 [2023-11-12 02:35:11,081 INFO L226 Difference]: Without dead ends: 8131 [2023-11-12 02:35:11,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:35:11,094 INFO L413 NwaCegarLoop]: 4381 mSDtfsCounter, 5080 mSDsluCounter, 17273 mSDsCounter, 0 mSdLazyCounter, 2492 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5095 SdHoareTripleChecker+Valid, 21654 SdHoareTripleChecker+Invalid, 2547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-12 02:35:11,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5095 Valid, 21654 Invalid, 2547 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 2492 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-12 02:35:11,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8131 states. [2023-11-12 02:35:11,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8131 to 6642. [2023-11-12 02:35:11,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6642 states, 6228 states have (on average 1.642581888246628) internal successors, (10230), 6246 states have internal predecessors, (10230), 294 states have call successors, (294), 102 states have call predecessors, (294), 118 states have return successors, (391), 309 states have call predecessors, (391), 294 states have call successors, (391) [2023-11-12 02:35:11,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6642 states to 6642 states and 10915 transitions. [2023-11-12 02:35:11,467 INFO L78 Accepts]: Start accepts. Automaton has 6642 states and 10915 transitions. Word has length 134 [2023-11-12 02:35:11,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:35:11,467 INFO L495 AbstractCegarLoop]: Abstraction has 6642 states and 10915 transitions. [2023-11-12 02:35:11,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:35:11,468 INFO L276 IsEmpty]: Start isEmpty. Operand 6642 states and 10915 transitions. [2023-11-12 02:35:11,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-12 02:35:11,473 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:35:11,473 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] [2023-11-12 02:35:11,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:35:11,473 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:35:11,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:35:11,474 INFO L85 PathProgramCache]: Analyzing trace with hash 696434472, now seen corresponding path program 1 times [2023-11-12 02:35:11,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:35:11,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944237574] [2023-11-12 02:35:11,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:35:11,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:35:11,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:35:11,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:35:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:35:11,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-12 02:35:11,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:35:11,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-12 02:35:11,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:35:11,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-12 02:35:11,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:35:11,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-12 02:35:11,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:35:11,738 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 02:35:11,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:35:11,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944237574] [2023-11-12 02:35:11,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944237574] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:35:11,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:35:11,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:35:11,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447295416] [2023-11-12 02:35:11,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:35:11,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:35:11,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:35:11,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:35:11,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:35:11,742 INFO L87 Difference]: Start difference. First operand 6642 states and 10915 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)