./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_6fcc8435-997a-4b85-b0ea-ab661414f43a/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fcc8435-997a-4b85-b0ea-ab661414f43a/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fcc8435-997a-4b85-b0ea-ab661414f43a/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fcc8435-997a-4b85-b0ea-ab661414f43a/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fcc8435-997a-4b85-b0ea-ab661414f43a/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fcc8435-997a-4b85-b0ea-ab661414f43a/bin/uautomizer-verify-uCwYo4JHxu --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 eebca77f45674e9c747126627d8fffbab7911c70d4e1d781272ecaec26772b5e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:59:24,061 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:59:24,189 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fcc8435-997a-4b85-b0ea-ab661414f43a/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:59:24,196 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:59:24,197 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:59:24,235 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:59:24,237 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:59:24,237 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:59:24,238 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:59:24,244 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:59:24,245 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:59:24,245 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:59:24,246 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:59:24,248 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:59:24,248 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:59:24,249 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:59:24,249 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:59:24,250 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:59:24,250 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:59:24,251 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:59:24,251 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:59:24,252 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:59:24,253 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:59:24,253 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:59:24,254 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:59:24,255 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:59:24,256 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:59:24,256 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:59:24,257 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:59:24,258 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:59:24,259 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:59:24,260 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:59:24,260 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:59:24,260 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:59:24,261 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:59:24,261 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:59:24,262 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:59:24,262 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:59:24,262 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:59:24,263 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_6fcc8435-997a-4b85-b0ea-ab661414f43a/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fcc8435-997a-4b85-b0ea-ab661414f43a/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eebca77f45674e9c747126627d8fffbab7911c70d4e1d781272ecaec26772b5e [2023-11-19 07:59:24,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:59:24,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:59:24,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:59:24,625 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:59:24,626 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:59:24,627 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fcc8435-997a-4b85-b0ea-ab661414f43a/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c [2023-11-19 07:59:27,764 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:59:28,569 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:59:28,569 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fcc8435-997a-4b85-b0ea-ab661414f43a/sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c [2023-11-19 07:59:28,628 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fcc8435-997a-4b85-b0ea-ab661414f43a/bin/uautomizer-verify-uCwYo4JHxu/data/0d17935f1/402f3ae6ea2645c8a82218d3e024e084/FLAGcfcb641a5 [2023-11-19 07:59:28,647 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fcc8435-997a-4b85-b0ea-ab661414f43a/bin/uautomizer-verify-uCwYo4JHxu/data/0d17935f1/402f3ae6ea2645c8a82218d3e024e084 [2023-11-19 07:59:28,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:59:28,656 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:59:28,658 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:59:28,658 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:59:28,664 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:59:28,664 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:28" (1/1) ... [2023-11-19 07:59:28,665 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@486a4004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:28, skipping insertion in model container [2023-11-19 07:59:28,666 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:28" (1/1) ... [2023-11-19 07:59:29,041 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:59:31,611 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_6fcc8435-997a-4b85-b0ea-ab661414f43a/sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c[377340,377353] [2023-11-19 07:59:31,651 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_6fcc8435-997a-4b85-b0ea-ab661414f43a/sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c[383339,383352] [2023-11-19 07:59:31,983 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:59:32,000 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:59:33,297 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_6fcc8435-997a-4b85-b0ea-ab661414f43a/sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c[377340,377353] [2023-11-19 07:59:33,306 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_6fcc8435-997a-4b85-b0ea-ab661414f43a/sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c[383339,383352] [2023-11-19 07:59:33,344 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:59:33,429 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:59:33,430 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:33 WrapperNode [2023-11-19 07:59:33,430 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:59:33,431 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:59:33,432 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:59:33,432 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:59:33,440 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:33" (1/1) ... [2023-11-19 07:59:33,616 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:33" (1/1) ... [2023-11-19 07:59:33,982 INFO L138 Inliner]: procedures = 62, calls = 68, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 13048 [2023-11-19 07:59:33,983 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:59:33,984 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:59:33,984 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:59:33,984 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:59:33,994 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:33" (1/1) ... [2023-11-19 07:59:33,995 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:33" (1/1) ... [2023-11-19 07:59:34,164 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:33" (1/1) ... [2023-11-19 07:59:34,165 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:33" (1/1) ... [2023-11-19 07:59:34,391 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:33" (1/1) ... [2023-11-19 07:59:34,434 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:33" (1/1) ... [2023-11-19 07:59:34,504 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:33" (1/1) ... [2023-11-19 07:59:34,525 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:33" (1/1) ... [2023-11-19 07:59:34,624 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:59:34,626 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:59:34,626 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:59:34,626 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:59:34,627 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:33" (1/1) ... [2023-11-19 07:59:34,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:59:34,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fcc8435-997a-4b85-b0ea-ab661414f43a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:34,660 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fcc8435-997a-4b85-b0ea-ab661414f43a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:59:34,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fcc8435-997a-4b85-b0ea-ab661414f43a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:59:34,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:59:34,816 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-19 07:59:34,816 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-19 07:59:34,816 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-19 07:59:34,816 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-19 07:59:34,817 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-19 07:59:34,817 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-19 07:59:34,817 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-19 07:59:34,817 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-19 07:59:34,817 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-19 07:59:34,817 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-19 07:59:34,817 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-19 07:59:34,817 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-19 07:59:34,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:59:34,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:59:34,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:59:34,952 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:59:34,954 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:59:44,729 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:59:44,767 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:59:44,767 INFO L302 CfgBuilder]: Removed 13 assume(true) statements. [2023-11-19 07:59:44,786 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:44 BoogieIcfgContainer [2023-11-19 07:59:44,786 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:59:44,790 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:59:44,790 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:59:44,794 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:59:44,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:59:28" (1/3) ... [2023-11-19 07:59:44,796 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@754bcd32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:44, skipping insertion in model container [2023-11-19 07:59:44,797 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:33" (2/3) ... [2023-11-19 07:59:44,799 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@754bcd32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:44, skipping insertion in model container [2023-11-19 07:59:44,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:44" (3/3) ... [2023-11-19 07:59:44,800 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.09.cil-1.c [2023-11-19 07:59:44,823 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:59:44,823 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 07:59:44,951 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:59:44,960 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;@6807529c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:59:44,960 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 07:59:44,977 INFO L276 IsEmpty]: Start isEmpty. Operand has 2500 states, 2468 states have (on average 1.8435980551053484) internal successors, (4550), 2471 states have internal predecessors, (4550), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:59:44,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-19 07:59:44,999 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:45,000 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] [2023-11-19 07:59:45,001 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:45,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:45,006 INFO L85 PathProgramCache]: Analyzing trace with hash 2141989661, now seen corresponding path program 1 times [2023-11-19 07:59:45,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:45,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617624714] [2023-11-19 07:59:45,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:45,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:45,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:45,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:59:45,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:45,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-19 07:59:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:45,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-19 07:59:45,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:45,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-19 07:59:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:45,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-19 07:59:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:45,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:45,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:45,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617624714] [2023-11-19 07:59:45,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617624714] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:45,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:45,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:59:45,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882040379] [2023-11-19 07:59:45,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:45,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:59:45,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:46,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:59:46,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:59:46,027 INFO L87 Difference]: Start difference. First operand has 2500 states, 2468 states have (on average 1.8435980551053484) internal successors, (4550), 2471 states have internal predecessors, (4550), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 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) [2023-11-19 07:59:48,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:48,177 INFO L93 Difference]: Finished difference Result 5101 states and 9365 transitions. [2023-11-19 07:59:48,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:59:48,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 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 145 [2023-11-19 07:59:48,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:48,211 INFO L225 Difference]: With dead ends: 5101 [2023-11-19 07:59:48,211 INFO L226 Difference]: Without dead ends: 2542 [2023-11-19 07:59:48,221 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 [2023-11-19 07:59:48,225 INFO L413 NwaCegarLoop]: 4314 mSDtfsCounter, 821 mSDsluCounter, 12407 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 16721 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:48,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 16721 Invalid, 855 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-19 07:59:48,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2542 states. [2023-11-19 07:59:48,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2542 to 2433. [2023-11-19 07:59:48,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2433 states, 2402 states have (on average 1.8288925895087427) internal successors, (4393), 2404 states have internal predecessors, (4393), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:59:48,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2433 states to 2433 states and 4439 transitions. [2023-11-19 07:59:48,402 INFO L78 Accepts]: Start accepts. Automaton has 2433 states and 4439 transitions. Word has length 145 [2023-11-19 07:59:48,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:48,403 INFO L495 AbstractCegarLoop]: Abstraction has 2433 states and 4439 transitions. [2023-11-19 07:59:48,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 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) [2023-11-19 07:59:48,403 INFO L276 IsEmpty]: Start isEmpty. Operand 2433 states and 4439 transitions. [2023-11-19 07:59:48,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-19 07:59:48,409 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:48,409 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] [2023-11-19 07:59:48,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:59:48,410 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:48,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:48,411 INFO L85 PathProgramCache]: Analyzing trace with hash -535537185, now seen corresponding path program 1 times [2023-11-19 07:59:48,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:48,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570069716] [2023-11-19 07:59:48,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:48,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:48,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:59:48,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:48,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-19 07:59:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:48,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-19 07:59:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:48,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-19 07:59:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:48,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-19 07:59:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:48,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:48,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:48,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570069716] [2023-11-19 07:59:48,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570069716] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:48,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:48,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:59:48,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553552966] [2023-11-19 07:59:48,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:48,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:59:48,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:48,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:59:48,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:59:48,855 INFO L87 Difference]: Start difference. First operand 2433 states and 4439 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 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) [2023-11-19 07:59:52,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:52,330 INFO L93 Difference]: Finished difference Result 3253 states and 5746 transitions. [2023-11-19 07:59:52,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:59:52,331 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 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 145 [2023-11-19 07:59:52,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:52,357 INFO L225 Difference]: With dead ends: 3253 [2023-11-19 07:59:52,357 INFO L226 Difference]: Without dead ends: 2958 [2023-11-19 07:59:52,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:59:52,364 INFO L413 NwaCegarLoop]: 4221 mSDtfsCounter, 5183 mSDsluCounter, 12669 mSDsCounter, 0 mSdLazyCounter, 1761 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5199 SdHoareTripleChecker+Valid, 16890 SdHoareTripleChecker+Invalid, 1857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:52,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5199 Valid, 16890 Invalid, 1857 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [96 Valid, 1761 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-19 07:59:52,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2023-11-19 07:59:52,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 2741. [2023-11-19 07:59:52,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2741 states, 2685 states have (on average 1.8011173184357543) internal successors, (4836), 2688 states have internal predecessors, (4836), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2023-11-19 07:59:52,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2741 states to 2741 states and 4921 transitions. [2023-11-19 07:59:52,516 INFO L78 Accepts]: Start accepts. Automaton has 2741 states and 4921 transitions. Word has length 145 [2023-11-19 07:59:52,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:52,518 INFO L495 AbstractCegarLoop]: Abstraction has 2741 states and 4921 transitions. [2023-11-19 07:59:52,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 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) [2023-11-19 07:59:52,519 INFO L276 IsEmpty]: Start isEmpty. Operand 2741 states and 4921 transitions. [2023-11-19 07:59:52,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-19 07:59:52,524 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:52,525 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] [2023-11-19 07:59:52,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:59:52,526 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:52,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:52,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1207466339, now seen corresponding path program 1 times [2023-11-19 07:59:52,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:52,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418080941] [2023-11-19 07:59:52,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:52,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:52,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:59:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:52,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-19 07:59:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:52,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-19 07:59:52,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:52,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-19 07:59:52,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:52,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-19 07:59:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:52,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:52,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:52,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418080941] [2023-11-19 07:59:52,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418080941] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:52,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:52,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:59:52,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725193831] [2023-11-19 07:59:52,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:52,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:59:52,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:52,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:59:52,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:59:52,919 INFO L87 Difference]: Start difference. First operand 2741 states and 4921 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2023-11-19 07:59:57,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:57,158 INFO L93 Difference]: Finished difference Result 3991 states and 6913 transitions. [2023-11-19 07:59:57,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:59:57,159 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2023-11-19 07:59:57,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:57,183 INFO L225 Difference]: With dead ends: 3991 [2023-11-19 07:59:57,183 INFO L226 Difference]: Without dead ends: 3388 [2023-11-19 07:59:57,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:59:57,200 INFO L413 NwaCegarLoop]: 4421 mSDtfsCounter, 5214 mSDsluCounter, 17410 mSDsCounter, 0 mSdLazyCounter, 2794 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5230 SdHoareTripleChecker+Valid, 21831 SdHoareTripleChecker+Invalid, 2849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:57,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5230 Valid, 21831 Invalid, 2849 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 2794 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-19 07:59:57,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3388 states. [2023-11-19 07:59:57,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3388 to 3028. [2023-11-19 07:59:57,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3028 states, 2947 states have (on average 1.7770614183915847) internal successors, (5237), 2951 states have internal predecessors, (5237), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2023-11-19 07:59:57,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3028 states to 3028 states and 5360 transitions. [2023-11-19 07:59:57,346 INFO L78 Accepts]: Start accepts. Automaton has 3028 states and 5360 transitions. Word has length 145 [2023-11-19 07:59:57,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:57,347 INFO L495 AbstractCegarLoop]: Abstraction has 3028 states and 5360 transitions. [2023-11-19 07:59:57,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2023-11-19 07:59:57,348 INFO L276 IsEmpty]: Start isEmpty. Operand 3028 states and 5360 transitions. [2023-11-19 07:59:57,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-19 07:59:57,350 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:57,351 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] [2023-11-19 07:59:57,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:59:57,351 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:57,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:57,352 INFO L85 PathProgramCache]: Analyzing trace with hash -2140463071, now seen corresponding path program 1 times [2023-11-19 07:59:57,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:57,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081622482] [2023-11-19 07:59:57,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:57,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:57,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:59:57,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:57,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-19 07:59:57,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:57,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-19 07:59:57,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:57,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-19 07:59:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:57,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-19 07:59:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:57,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:57,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:57,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081622482] [2023-11-19 07:59:57,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081622482] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:57,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:57,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:59:57,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872853092] [2023-11-19 07:59:57,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:57,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:59:57,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:57,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:59:57,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:59:57,677 INFO L87 Difference]: Start difference. First operand 3028 states and 5360 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2023-11-19 08:00:01,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:01,658 INFO L93 Difference]: Finished difference Result 5078 states and 8620 transitions. [2023-11-19 08:00:01,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 08:00:01,659 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2023-11-19 08:00:01,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:01,685 INFO L225 Difference]: With dead ends: 5078 [2023-11-19 08:00:01,685 INFO L226 Difference]: Without dead ends: 4188 [2023-11-19 08:00:01,690 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 [2023-11-19 08:00:01,691 INFO L413 NwaCegarLoop]: 4419 mSDtfsCounter, 5208 mSDsluCounter, 17410 mSDsCounter, 0 mSdLazyCounter, 2773 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5224 SdHoareTripleChecker+Valid, 21829 SdHoareTripleChecker+Invalid, 2830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:01,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5224 Valid, 21829 Invalid, 2830 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [57 Valid, 2773 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-19 08:00:01,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4188 states. [2023-11-19 08:00:01,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4188 to 3606. [2023-11-19 08:00:01,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3606 states, 3475 states have (on average 1.7398561151079137) internal successors, (6046), 3481 states have internal predecessors, (6046), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2023-11-19 08:00:01,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 6249 transitions. [2023-11-19 08:00:01,869 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 6249 transitions. Word has length 145 [2023-11-19 08:00:01,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:01,870 INFO L495 AbstractCegarLoop]: Abstraction has 3606 states and 6249 transitions. [2023-11-19 08:00:01,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2023-11-19 08:00:01,871 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 6249 transitions. [2023-11-19 08:00:01,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-19 08:00:01,875 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:01,875 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] [2023-11-19 08:00:01,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:00:01,876 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:01,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:01,879 INFO L85 PathProgramCache]: Analyzing trace with hash 104095327, now seen corresponding path program 1 times [2023-11-19 08:00:01,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:01,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359724656] [2023-11-19 08:00:01,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:01,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:02,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 08:00:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:02,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-19 08:00:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:02,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-19 08:00:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:02,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-19 08:00:02,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:02,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-19 08:00:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:02,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:02,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:02,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359724656] [2023-11-19 08:00:02,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359724656] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:02,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:02,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 08:00:02,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911488288] [2023-11-19 08:00:02,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:02,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:00:02,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:02,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:00:02,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:00:02,237 INFO L87 Difference]: Start difference. First operand 3606 states and 6249 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2023-11-19 08:00:06,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:06,194 INFO L93 Difference]: Finished difference Result 7178 states and 11897 transitions. [2023-11-19 08:00:06,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 08:00:06,195 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2023-11-19 08:00:06,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:06,231 INFO L225 Difference]: With dead ends: 7178 [2023-11-19 08:00:06,232 INFO L226 Difference]: Without dead ends: 5710 [2023-11-19 08:00:06,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-19 08:00:06,240 INFO L413 NwaCegarLoop]: 4419 mSDtfsCounter, 5207 mSDsluCounter, 17410 mSDsCounter, 0 mSdLazyCounter, 2760 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5223 SdHoareTripleChecker+Valid, 21829 SdHoareTripleChecker+Invalid, 2817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:06,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5223 Valid, 21829 Invalid, 2817 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [57 Valid, 2760 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-19 08:00:06,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5710 states. [2023-11-19 08:00:06,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5710 to 4763. [2023-11-19 08:00:06,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4763 states, 4532 states have (on average 1.6910856134157104) internal successors, (7664), 4542 states have internal predecessors, (7664), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2023-11-19 08:00:06,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4763 states to 4763 states and 8033 transitions. [2023-11-19 08:00:06,460 INFO L78 Accepts]: Start accepts. Automaton has 4763 states and 8033 transitions. Word has length 145 [2023-11-19 08:00:06,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:06,461 INFO L495 AbstractCegarLoop]: Abstraction has 4763 states and 8033 transitions. [2023-11-19 08:00:06,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2023-11-19 08:00:06,461 INFO L276 IsEmpty]: Start isEmpty. Operand 4763 states and 8033 transitions. [2023-11-19 08:00:06,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-19 08:00:06,465 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:06,465 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] [2023-11-19 08:00:06,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:00:06,466 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:06,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:06,467 INFO L85 PathProgramCache]: Analyzing trace with hash 592142433, now seen corresponding path program 1 times [2023-11-19 08:00:06,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:06,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030709742] [2023-11-19 08:00:06,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:06,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:06,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:06,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 08:00:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:06,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-19 08:00:06,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:06,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-19 08:00:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:06,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-19 08:00:06,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:06,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-19 08:00:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:06,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:06,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:06,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030709742] [2023-11-19 08:00:06,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030709742] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:06,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:06,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 08:00:06,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807857181] [2023-11-19 08:00:06,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:06,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:00:06,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:06,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:00:06,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:00:06,771 INFO L87 Difference]: Start difference. First operand 4763 states and 8033 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2023-11-19 08:00:10,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:10,799 INFO L93 Difference]: Finished difference Result 11377 states and 18467 transitions. [2023-11-19 08:00:10,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 08:00:10,801 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2023-11-19 08:00:10,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:10,870 INFO L225 Difference]: With dead ends: 11377 [2023-11-19 08:00:10,870 INFO L226 Difference]: Without dead ends: 8752 [2023-11-19 08:00:10,880 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 [2023-11-19 08:00:10,885 INFO L413 NwaCegarLoop]: 4419 mSDtfsCounter, 5206 mSDsluCounter, 17410 mSDsCounter, 0 mSdLazyCounter, 2747 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5222 SdHoareTripleChecker+Valid, 21829 SdHoareTripleChecker+Invalid, 2804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:10,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5222 Valid, 21829 Invalid, 2804 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [57 Valid, 2747 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-19 08:00:10,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8752 states. [2023-11-19 08:00:11,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8752 to 7084. [2023-11-19 08:00:11,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7084 states, 6653 states have (on average 1.6398617165188636) internal successors, (10910), 6671 states have internal predecessors, (10910), 311 states have call successors, (311), 102 states have call predecessors, (311), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2023-11-19 08:00:11,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7084 states to 7084 states and 11629 transitions. [2023-11-19 08:00:11,242 INFO L78 Accepts]: Start accepts. Automaton has 7084 states and 11629 transitions. Word has length 145 [2023-11-19 08:00:11,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:11,242 INFO L495 AbstractCegarLoop]: Abstraction has 7084 states and 11629 transitions. [2023-11-19 08:00:11,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2023-11-19 08:00:11,243 INFO L276 IsEmpty]: Start isEmpty. Operand 7084 states and 11629 transitions. [2023-11-19 08:00:11,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-19 08:00:11,249 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:11,249 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] [2023-11-19 08:00:11,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:00:11,249 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:11,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:11,250 INFO L85 PathProgramCache]: Analyzing trace with hash -500492769, now seen corresponding path program 1 times [2023-11-19 08:00:11,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:11,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956367167] [2023-11-19 08:00:11,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:11,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:11,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 08:00:11,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:11,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-19 08:00:11,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:11,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-19 08:00:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:11,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-19 08:00:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:11,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-19 08:00:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:11,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:11,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:11,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956367167] [2023-11-19 08:00:11,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956367167] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:11,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:11,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 08:00:11,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342885619] [2023-11-19 08:00:11,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:11,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:00:11,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:11,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:00:11,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:00:11,570 INFO L87 Difference]: Start difference. First operand 7084 states and 11629 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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)