./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label41+token_ring.07.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fede47e5-4ec0-4363-b30f-a80cd311b7a3/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fede47e5-4ec0-4363-b30f-a80cd311b7a3/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fede47e5-4ec0-4363-b30f-a80cd311b7a3/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fede47e5-4ec0-4363-b30f-a80cd311b7a3/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label41+token_ring.07.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fede47e5-4ec0-4363-b30f-a80cd311b7a3/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fede47e5-4ec0-4363-b30f-a80cd311b7a3/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 1937875315099b80c98271a1c221b9887fc0d74aa97933e0962b57c2a2a9f37a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:55:34,717 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:55:34,795 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fede47e5-4ec0-4363-b30f-a80cd311b7a3/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:55:34,801 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:55:34,802 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:55:34,832 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:55:34,833 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:55:34,834 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:55:34,835 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:55:34,835 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:55:34,836 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:55:34,837 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:55:34,837 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:55:34,838 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:55:34,839 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:55:34,839 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:55:34,840 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:55:34,840 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:55:34,841 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:55:34,841 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:55:34,841 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:55:34,842 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:55:34,843 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:55:34,843 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:55:34,843 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:55:34,844 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:55:34,844 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:55:34,845 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:55:34,845 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:55:34,846 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:55:34,846 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:55:34,846 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:55:34,847 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:55:34,847 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:55:34,847 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:55:34,848 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:55:34,848 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:55:34,848 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:55:34,848 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:55:34,849 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_fede47e5-4ec0-4363-b30f-a80cd311b7a3/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fede47e5-4ec0-4363-b30f-a80cd311b7a3/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1937875315099b80c98271a1c221b9887fc0d74aa97933e0962b57c2a2a9f37a [2023-11-06 22:55:35,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:55:35,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:55:35,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:55:35,166 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:55:35,167 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:55:35,168 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fede47e5-4ec0-4363-b30f-a80cd311b7a3/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/combinations/Problem05_label41+token_ring.07.cil-1.c [2023-11-06 22:55:38,419 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:55:39,221 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:55:39,222 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fede47e5-4ec0-4363-b30f-a80cd311b7a3/sv-benchmarks/c/combinations/Problem05_label41+token_ring.07.cil-1.c [2023-11-06 22:55:39,283 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fede47e5-4ec0-4363-b30f-a80cd311b7a3/bin/uautomizer-verify-WvqO1wxjHP/data/8415c91c6/092e36e234d24622adda82bb6505ab25/FLAGf38c8a29d [2023-11-06 22:55:39,304 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fede47e5-4ec0-4363-b30f-a80cd311b7a3/bin/uautomizer-verify-WvqO1wxjHP/data/8415c91c6/092e36e234d24622adda82bb6505ab25 [2023-11-06 22:55:39,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:55:39,322 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:55:39,324 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:55:39,324 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:55:39,331 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:55:39,332 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:55:39" (1/1) ... [2023-11-06 22:55:39,333 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f052896 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:39, skipping insertion in model container [2023-11-06 22:55:39,334 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:55:39" (1/1) ... [2023-11-06 22:55:39,744 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:55:42,379 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_fede47e5-4ec0-4363-b30f-a80cd311b7a3/sv-benchmarks/c/combinations/Problem05_label41+token_ring.07.cil-1.c[376251,376264] [2023-11-06 22:55:42,425 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_fede47e5-4ec0-4363-b30f-a80cd311b7a3/sv-benchmarks/c/combinations/Problem05_label41+token_ring.07.cil-1.c[383339,383352] [2023-11-06 22:55:42,838 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:55:42,861 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:55:44,304 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_fede47e5-4ec0-4363-b30f-a80cd311b7a3/sv-benchmarks/c/combinations/Problem05_label41+token_ring.07.cil-1.c[376251,376264] [2023-11-06 22:55:44,318 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_fede47e5-4ec0-4363-b30f-a80cd311b7a3/sv-benchmarks/c/combinations/Problem05_label41+token_ring.07.cil-1.c[383339,383352] [2023-11-06 22:55:44,363 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:55:44,466 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:55:44,467 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:44 WrapperNode [2023-11-06 22:55:44,468 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:55:44,469 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:55:44,469 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:55:44,470 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:55:44,479 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:44" (1/1) ... [2023-11-06 22:55:44,598 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:44" (1/1) ... [2023-11-06 22:55:45,149 INFO L138 Inliner]: procedures = 58, calls = 62, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 12928 [2023-11-06 22:55:45,149 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:55:45,150 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:55:45,150 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:55:45,151 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:55:45,162 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:44" (1/1) ... [2023-11-06 22:55:45,162 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:44" (1/1) ... [2023-11-06 22:55:45,281 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:44" (1/1) ... [2023-11-06 22:55:45,282 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:44" (1/1) ... [2023-11-06 22:55:45,480 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:44" (1/1) ... [2023-11-06 22:55:45,644 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:44" (1/1) ... [2023-11-06 22:55:45,668 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:44" (1/1) ... [2023-11-06 22:55:45,697 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:44" (1/1) ... [2023-11-06 22:55:45,762 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:55:45,764 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:55:45,764 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:55:45,765 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:55:45,766 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:44" (1/1) ... [2023-11-06 22:55:45,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:55:45,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fede47e5-4ec0-4363-b30f-a80cd311b7a3/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:55:45,806 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fede47e5-4ec0-4363-b30f-a80cd311b7a3/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:55:45,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fede47e5-4ec0-4363-b30f-a80cd311b7a3/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:55:45,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:55:45,865 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-06 22:55:45,865 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-06 22:55:45,865 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-06 22:55:45,865 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-06 22:55:45,865 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-06 22:55:45,866 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-06 22:55:45,866 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-06 22:55:45,866 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-06 22:55:45,868 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-06 22:55:45,868 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-06 22:55:45,868 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-06 22:55:45,869 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-06 22:55:45,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:55:45,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:55:45,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:55:46,106 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:55:46,108 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:55:56,752 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:55:56,792 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:55:56,792 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-11-06 22:55:56,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:55:56 BoogieIcfgContainer [2023-11-06 22:55:56,800 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:55:56,803 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:55:56,803 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:55:56,807 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:55:56,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:55:39" (1/3) ... [2023-11-06 22:55:56,808 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3303dd31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:55:56, skipping insertion in model container [2023-11-06 22:55:56,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:44" (2/3) ... [2023-11-06 22:55:56,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3303dd31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:55:56, skipping insertion in model container [2023-11-06 22:55:56,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:55:56" (3/3) ... [2023-11-06 22:55:56,811 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.07.cil-1.c [2023-11-06 22:55:56,833 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:55:56,833 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 22:55:56,946 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:55:56,954 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=LoopsAndPotentialCycles, 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;@24c64625, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:55:56,955 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-06 22:55:56,970 INFO L276 IsEmpty]: Start isEmpty. Operand has 2448 states, 2418 states have (on average 1.846980976013234) internal successors, (4466), 2421 states have internal predecessors, (4466), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-06 22:55:56,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-06 22:55:56,994 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:55:56,995 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] [2023-11-06 22:55:56,996 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:55:57,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:55:57,003 INFO L85 PathProgramCache]: Analyzing trace with hash -185655382, now seen corresponding path program 1 times [2023-11-06 22:55:57,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:55:57,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225765045] [2023-11-06 22:55:57,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:57,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:55:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:57,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:55:57,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:57,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:55:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:57,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-06 22:55:57,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:57,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-06 22:55:57,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:57,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-06 22:55:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:57,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:55:57,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:55:57,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225765045] [2023-11-06 22:55:57,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225765045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:55:57,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:55:57,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:55:57,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924589383] [2023-11-06 22:55:57,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:55:57,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:55:57,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:55:57,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:55:57,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:55:57,841 INFO L87 Difference]: Start difference. First operand has 2448 states, 2418 states have (on average 1.846980976013234) internal successors, (4466), 2421 states have internal predecessors, (4466), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 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) [2023-11-06 22:56:00,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:00,090 INFO L93 Difference]: Finished difference Result 4971 states and 9143 transitions. [2023-11-06 22:56:00,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:56:00,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 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 123 [2023-11-06 22:56:00,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:00,131 INFO L225 Difference]: With dead ends: 4971 [2023-11-06 22:56:00,132 INFO L226 Difference]: Without dead ends: 2468 [2023-11-06 22:56:00,143 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 [2023-11-06 22:56:00,148 INFO L413 NwaCegarLoop]: 4268 mSDtfsCounter, 665 mSDsluCounter, 12351 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 16619 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:56:00,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 16619 Invalid, 697 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [46 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-06 22:56:00,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2468 states. [2023-11-06 22:56:00,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2468 to 2381. [2023-11-06 22:56:00,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2381 states, 2352 states have (on average 1.8337585034013606) internal successors, (4313), 2354 states have internal predecessors, (4313), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-06 22:56:00,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2381 states to 2381 states and 4355 transitions. [2023-11-06 22:56:00,378 INFO L78 Accepts]: Start accepts. Automaton has 2381 states and 4355 transitions. Word has length 123 [2023-11-06 22:56:00,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:00,379 INFO L495 AbstractCegarLoop]: Abstraction has 2381 states and 4355 transitions. [2023-11-06 22:56:00,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 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) [2023-11-06 22:56:00,380 INFO L276 IsEmpty]: Start isEmpty. Operand 2381 states and 4355 transitions. [2023-11-06 22:56:00,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-06 22:56:00,387 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:00,387 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] [2023-11-06 22:56:00,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:56:00,388 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:56:00,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:00,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1787509996, now seen corresponding path program 1 times [2023-11-06 22:56:00,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:00,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184303509] [2023-11-06 22:56:00,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:00,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:00,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:56:00,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:00,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:56:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:00,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-06 22:56:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:00,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-06 22:56:00,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:00,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-06 22:56:00,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:00,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:00,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:00,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184303509] [2023-11-06 22:56:00,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184303509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:00,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:56:00,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:56:00,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15127757] [2023-11-06 22:56:00,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:00,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:56:00,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:00,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:56:00,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:56:00,827 INFO L87 Difference]: Start difference. First operand 2381 states and 4355 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 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) [2023-11-06 22:56:03,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:03,997 INFO L93 Difference]: Finished difference Result 3053 states and 5418 transitions. [2023-11-06 22:56:03,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:56:03,998 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 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 123 [2023-11-06 22:56:03,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:04,020 INFO L225 Difference]: With dead ends: 3053 [2023-11-06 22:56:04,020 INFO L226 Difference]: Without dead ends: 2808 [2023-11-06 22:56:04,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:56:04,024 INFO L413 NwaCegarLoop]: 4179 mSDtfsCounter, 4951 mSDsluCounter, 12535 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4965 SdHoareTripleChecker+Valid, 16714 SdHoareTripleChecker+Invalid, 1513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:56:04,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4965 Valid, 16714 Invalid, 1513 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 1425 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-06 22:56:04,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2808 states. [2023-11-06 22:56:04,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2808 to 2635. [2023-11-06 22:56:04,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2635 states, 2583 states have (on average 1.8087495160665892) internal successors, (4672), 2586 states have internal predecessors, (4672), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2023-11-06 22:56:04,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2635 states to 2635 states and 4749 transitions. [2023-11-06 22:56:04,171 INFO L78 Accepts]: Start accepts. Automaton has 2635 states and 4749 transitions. Word has length 123 [2023-11-06 22:56:04,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:04,173 INFO L495 AbstractCegarLoop]: Abstraction has 2635 states and 4749 transitions. [2023-11-06 22:56:04,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 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) [2023-11-06 22:56:04,174 INFO L276 IsEmpty]: Start isEmpty. Operand 2635 states and 4749 transitions. [2023-11-06 22:56:04,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-06 22:56:04,180 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:04,181 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:56:04,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:56:04,182 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:56:04,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:04,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1061945968, now seen corresponding path program 1 times [2023-11-06 22:56:04,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:04,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903318421] [2023-11-06 22:56:04,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:04,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:04,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:04,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:56:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:04,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:56:04,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:04,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-06 22:56:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:04,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-06 22:56:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:04,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-06 22:56:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:04,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:04,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:04,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903318421] [2023-11-06 22:56:04,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903318421] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:04,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:56:04,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:56:04,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976640357] [2023-11-06 22:56:04,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:04,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:56:04,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:04,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:56:04,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:56:04,653 INFO L87 Difference]: Start difference. First operand 2635 states and 4749 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2023-11-06 22:56:08,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:08,652 INFO L93 Difference]: Finished difference Result 3657 states and 6363 transitions. [2023-11-06 22:56:08,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:56:08,653 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 123 [2023-11-06 22:56:08,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:08,678 INFO L225 Difference]: With dead ends: 3657 [2023-11-06 22:56:08,678 INFO L226 Difference]: Without dead ends: 3158 [2023-11-06 22:56:08,689 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 [2023-11-06 22:56:08,692 INFO L413 NwaCegarLoop]: 4345 mSDtfsCounter, 4964 mSDsluCounter, 17136 mSDsCounter, 0 mSdLazyCounter, 2275 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4978 SdHoareTripleChecker+Valid, 21481 SdHoareTripleChecker+Invalid, 2326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:56:08,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4978 Valid, 21481 Invalid, 2326 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [51 Valid, 2275 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-06 22:56:08,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3158 states. [2023-11-06 22:56:08,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3158 to 2872. [2023-11-06 22:56:08,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2872 states, 2797 states have (on average 1.7865570253843404) internal successors, (4997), 2801 states have internal predecessors, (4997), 53 states have call successors, (53), 18 states have call predecessors, (53), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2023-11-06 22:56:08,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2872 states to 2872 states and 5108 transitions. [2023-11-06 22:56:08,898 INFO L78 Accepts]: Start accepts. Automaton has 2872 states and 5108 transitions. Word has length 123 [2023-11-06 22:56:08,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:08,899 INFO L495 AbstractCegarLoop]: Abstraction has 2872 states and 5108 transitions. [2023-11-06 22:56:08,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2023-11-06 22:56:08,900 INFO L276 IsEmpty]: Start isEmpty. Operand 2872 states and 5108 transitions. [2023-11-06 22:56:08,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-06 22:56:08,902 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:08,903 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] [2023-11-06 22:56:08,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:56:08,904 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:56:08,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:08,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1843727314, now seen corresponding path program 1 times [2023-11-06 22:56:08,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:08,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150122466] [2023-11-06 22:56:08,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:08,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:08,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:09,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:56:09,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:09,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:56:09,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:09,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-06 22:56:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:09,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-06 22:56:09,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:09,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-06 22:56:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:09,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:09,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:09,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150122466] [2023-11-06 22:56:09,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150122466] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:09,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:56:09,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:56:09,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684674710] [2023-11-06 22:56:09,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:09,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:56:09,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:09,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:56:09,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:56:09,208 INFO L87 Difference]: Start difference. First operand 2872 states and 5108 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2023-11-06 22:56:13,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:13,057 INFO L93 Difference]: Finished difference Result 4547 states and 7746 transitions. [2023-11-06 22:56:13,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:56:13,058 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 123 [2023-11-06 22:56:13,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:13,086 INFO L225 Difference]: With dead ends: 4547 [2023-11-06 22:56:13,086 INFO L226 Difference]: Without dead ends: 3811 [2023-11-06 22:56:13,090 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 [2023-11-06 22:56:13,092 INFO L413 NwaCegarLoop]: 4343 mSDtfsCounter, 4962 mSDsluCounter, 17136 mSDsCounter, 0 mSdLazyCounter, 2271 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4976 SdHoareTripleChecker+Valid, 21479 SdHoareTripleChecker+Invalid, 2324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:56:13,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4976 Valid, 21479 Invalid, 2324 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [53 Valid, 2271 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-06 22:56:13,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3811 states. [2023-11-06 22:56:13,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3811 to 3347. [2023-11-06 22:56:13,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3347 states, 3226 states have (on average 1.7507749535027899) internal successors, (5648), 3232 states have internal predecessors, (5648), 85 states have call successors, (85), 30 states have call predecessors, (85), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2023-11-06 22:56:13,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3347 states to 3347 states and 5831 transitions. [2023-11-06 22:56:13,355 INFO L78 Accepts]: Start accepts. Automaton has 3347 states and 5831 transitions. Word has length 123 [2023-11-06 22:56:13,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:13,356 INFO L495 AbstractCegarLoop]: Abstraction has 3347 states and 5831 transitions. [2023-11-06 22:56:13,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2023-11-06 22:56:13,357 INFO L276 IsEmpty]: Start isEmpty. Operand 3347 states and 5831 transitions. [2023-11-06 22:56:13,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-06 22:56:13,360 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:13,360 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] [2023-11-06 22:56:13,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:56:13,361 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:56:13,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:13,361 INFO L85 PathProgramCache]: Analyzing trace with hash 417845936, now seen corresponding path program 1 times [2023-11-06 22:56:13,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:13,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821204148] [2023-11-06 22:56:13,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:13,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:13,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:56:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:13,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:56:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:13,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-06 22:56:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:13,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-06 22:56:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:13,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-06 22:56:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:13,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:13,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:13,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821204148] [2023-11-06 22:56:13,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821204148] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:13,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:56:13,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:56:13,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352201250] [2023-11-06 22:56:13,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:13,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:56:13,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:13,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:56:13,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:56:13,680 INFO L87 Difference]: Start difference. First operand 3347 states and 5831 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2023-11-06 22:56:17,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:17,415 INFO L93 Difference]: Finished difference Result 6262 states and 10397 transitions. [2023-11-06 22:56:17,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:56:17,416 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 123 [2023-11-06 22:56:17,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:17,451 INFO L225 Difference]: With dead ends: 6262 [2023-11-06 22:56:17,452 INFO L226 Difference]: Without dead ends: 5051 [2023-11-06 22:56:17,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:56:17,460 INFO L413 NwaCegarLoop]: 4343 mSDtfsCounter, 4958 mSDsluCounter, 17136 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4972 SdHoareTripleChecker+Valid, 21479 SdHoareTripleChecker+Invalid, 2315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:56:17,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4972 Valid, 21479 Invalid, 2315 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [53 Valid, 2262 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-06 22:56:17,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5051 states. [2023-11-06 22:56:17,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5051 to 4298. [2023-11-06 22:56:17,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4298 states, 4085 states have (on average 1.7013463892288863) internal successors, (6950), 4095 states have internal predecessors, (6950), 149 states have call successors, (149), 54 states have call predecessors, (149), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2023-11-06 22:56:17,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4298 states to 4298 states and 7283 transitions. [2023-11-06 22:56:17,978 INFO L78 Accepts]: Start accepts. Automaton has 4298 states and 7283 transitions. Word has length 123 [2023-11-06 22:56:17,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:17,978 INFO L495 AbstractCegarLoop]: Abstraction has 4298 states and 7283 transitions. [2023-11-06 22:56:17,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2023-11-06 22:56:17,979 INFO L276 IsEmpty]: Start isEmpty. Operand 4298 states and 7283 transitions. [2023-11-06 22:56:17,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-06 22:56:17,983 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:17,984 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] [2023-11-06 22:56:17,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:56:17,985 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:56:17,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:17,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1448862738, now seen corresponding path program 1 times [2023-11-06 22:56:17,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:17,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35606363] [2023-11-06 22:56:17,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:17,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:18,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:18,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:56:18,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:18,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:56:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:18,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-06 22:56:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:18,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-06 22:56:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:18,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-06 22:56:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:18,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:18,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:18,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35606363] [2023-11-06 22:56:18,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35606363] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:18,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:56:18,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:56:18,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744790876] [2023-11-06 22:56:18,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:18,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:56:18,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:18,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:56:18,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:56:18,376 INFO L87 Difference]: Start difference. First operand 4298 states and 7283 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2023-11-06 22:56:22,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:22,189 INFO L93 Difference]: Finished difference Result 9691 states and 15715 transitions. [2023-11-06 22:56:22,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:56:22,190 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 123 [2023-11-06 22:56:22,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:22,239 INFO L225 Difference]: With dead ends: 9691 [2023-11-06 22:56:22,240 INFO L226 Difference]: Without dead ends: 7529 [2023-11-06 22:56:22,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:56:22,250 INFO L413 NwaCegarLoop]: 4343 mSDtfsCounter, 4954 mSDsluCounter, 17136 mSDsCounter, 0 mSdLazyCounter, 2253 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4968 SdHoareTripleChecker+Valid, 21479 SdHoareTripleChecker+Invalid, 2306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:56:22,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4968 Valid, 21479 Invalid, 2306 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [53 Valid, 2253 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-06 22:56:22,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7529 states. [2023-11-06 22:56:22,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7529 to 6205. [2023-11-06 22:56:22,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6205 states, 5808 states have (on average 1.6460055096418733) internal successors, (9560), 5826 states have internal predecessors, (9560), 277 states have call successors, (277), 102 states have call predecessors, (277), 118 states have return successors, (374), 292 states have call predecessors, (374), 277 states have call successors, (374) [2023-11-06 22:56:22,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6205 states to 6205 states and 10211 transitions. [2023-11-06 22:56:22,920 INFO L78 Accepts]: Start accepts. Automaton has 6205 states and 10211 transitions. Word has length 123 [2023-11-06 22:56:22,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:22,921 INFO L495 AbstractCegarLoop]: Abstraction has 6205 states and 10211 transitions. [2023-11-06 22:56:22,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2023-11-06 22:56:22,922 INFO L276 IsEmpty]: Start isEmpty. Operand 6205 states and 10211 transitions. [2023-11-06 22:56:22,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-06 22:56:22,927 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:22,927 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] [2023-11-06 22:56:22,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:56:22,928 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:56:22,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:22,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1538962160, now seen corresponding path program 1 times [2023-11-06 22:56:22,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:22,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98373332] [2023-11-06 22:56:22,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:22,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:23,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:56:23,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:23,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:56:23,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:23,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-06 22:56:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:23,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-06 22:56:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:23,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-06 22:56:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:23,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:23,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:23,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98373332] [2023-11-06 22:56:23,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98373332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:23,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:56:23,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:56:23,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398764238] [2023-11-06 22:56:23,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:23,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:56:23,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:23,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:56:23,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:56:23,270 INFO L87 Difference]: Start difference. First operand 6205 states and 10211 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2023-11-06 22:56:27,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:27,603 INFO L93 Difference]: Finished difference Result 16548 states and 26409 transitions. [2023-11-06 22:56:27,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:56:27,604 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 123 [2023-11-06 22:56:27,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:27,668 INFO L225 Difference]: With dead ends: 16548 [2023-11-06 22:56:27,668 INFO L226 Difference]: Without dead ends: 12479 [2023-11-06 22:56:27,686 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 [2023-11-06 22:56:27,687 INFO L413 NwaCegarLoop]: 4343 mSDtfsCounter, 4956 mSDsluCounter, 17136 mSDsCounter, 0 mSdLazyCounter, 2239 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4970 SdHoareTripleChecker+Valid, 21479 SdHoareTripleChecker+Invalid, 2292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:56:27,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4970 Valid, 21479 Invalid, 2292 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [53 Valid, 2239 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-06 22:56:27,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12479 states. [2023-11-06 22:56:28,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12479 to 10032. [2023-11-06 22:56:28,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10032 states, 9267 states have (on average 1.5968490342074027) internal successors, (14798), 9301 states have internal predecessors, (14798), 533 states have call successors, (533), 198 states have call predecessors, (533), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2023-11-06 22:56:28,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10032 states to 10032 states and 16139 transitions. [2023-11-06 22:56:28,729 INFO L78 Accepts]: Start accepts. Automaton has 10032 states and 16139 transitions. Word has length 123 [2023-11-06 22:56:28,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:28,730 INFO L495 AbstractCegarLoop]: Abstraction has 10032 states and 16139 transitions. [2023-11-06 22:56:28,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2023-11-06 22:56:28,730 INFO L276 IsEmpty]: Start isEmpty. Operand 10032 states and 16139 transitions. [2023-11-06 22:56:28,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-06 22:56:28,740 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:28,740 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] [2023-11-06 22:56:28,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:56:28,741 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:56:28,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:28,741 INFO L85 PathProgramCache]: Analyzing trace with hash -858508370, now seen corresponding path program 1 times [2023-11-06 22:56:28,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:28,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295390586] [2023-11-06 22:56:28,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:28,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:28,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:28,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:56:28,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:28,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:56:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:28,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-06 22:56:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:28,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-06 22:56:28,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:28,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-06 22:56:28,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:28,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:28,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:28,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295390586] [2023-11-06 22:56:28,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295390586] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:28,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:56:28,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:56:28,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719871295] [2023-11-06 22:56:28,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:28,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:56:28,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:28,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:56:28,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:56:28,978 INFO L87 Difference]: Start difference. First operand 10032 states and 16139 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2023-11-06 22:56:32,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:32,135 INFO L93 Difference]: Finished difference Result 20470 states and 32732 transitions. [2023-11-06 22:56:32,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:56:32,136 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 123 [2023-11-06 22:56:32,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:32,205 INFO L225 Difference]: With dead ends: 20470 [2023-11-06 22:56:32,205 INFO L226 Difference]: Without dead ends: 12574 [2023-11-06 22:56:32,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:56:32,242 INFO L413 NwaCegarLoop]: 4164 mSDtfsCounter, 4803 mSDsluCounter, 12380 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4818 SdHoareTripleChecker+Valid, 16544 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:56:32,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4818 Valid, 16544 Invalid, 1092 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-06 22:56:32,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12574 states. [2023-11-06 22:56:33,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12574 to 10032. [2023-11-06 22:56:33,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10032 states, 9267 states have (on average 1.593288011222618) internal successors, (14765), 9301 states have internal predecessors, (14765), 533 states have call successors, (533), 198 states have call predecessors, (533), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2023-11-06 22:56:33,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10032 states to 10032 states and 16106 transitions. [2023-11-06 22:56:33,261 INFO L78 Accepts]: Start accepts. Automaton has 10032 states and 16106 transitions. Word has length 123 [2023-11-06 22:56:33,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:33,261 INFO L495 AbstractCegarLoop]: Abstraction has 10032 states and 16106 transitions. [2023-11-06 22:56:33,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2023-11-06 22:56:33,262 INFO L276 IsEmpty]: Start isEmpty. Operand 10032 states and 16106 transitions. [2023-11-06 22:56:33,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-06 22:56:33,273 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:33,273 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] [2023-11-06 22:56:33,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:56:33,274 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:56:33,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:33,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1530055660, now seen corresponding path program 1 times [2023-11-06 22:56:33,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:33,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611428076] [2023-11-06 22:56:33,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:33,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:33,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:33,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:56:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:33,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:56:33,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:33,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-06 22:56:33,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:33,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-06 22:56:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:33,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-06 22:56:33,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:33,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:33,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:33,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611428076] [2023-11-06 22:56:33,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611428076] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:33,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:56:33,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:56:33,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502263510] [2023-11-06 22:56:33,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:33,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:56:33,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:33,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:56:33,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:56:33,579 INFO L87 Difference]: Start difference. First operand 10032 states and 16106 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2023-11-06 22:56:40,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:40,449 INFO L93 Difference]: Finished difference Result 33620 states and 52881 transitions. [2023-11-06 22:56:40,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:56:40,450 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 123 [2023-11-06 22:56:40,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:40,569 INFO L225 Difference]: With dead ends: 33620 [2023-11-06 22:56:40,569 INFO L226 Difference]: Without dead ends: 25724 [2023-11-06 22:56:40,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:56:40,611 INFO L413 NwaCegarLoop]: 4341 mSDtfsCounter, 5236 mSDsluCounter, 17128 mSDsCounter, 0 mSdLazyCounter, 2179 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5258 SdHoareTripleChecker+Valid, 21469 SdHoareTripleChecker+Invalid, 2235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:56:40,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5258 Valid, 21469 Invalid, 2235 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 2179 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-06 22:56:40,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25724 states. [2023-11-06 22:56:42,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25724 to 17685. [2023-11-06 22:56:42,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17685 states, 16216 states have (on average 1.5593857918105574) internal successors, (25287), 16282 states have internal predecessors, (25287), 1013 states have call successors, (1013), 390 states have call predecessors, (1013), 454 states have return successors, (1806), 1076 states have call predecessors, (1806), 1013 states have call successors, (1806) [2023-11-06 22:56:42,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17685 states to 17685 states and 28106 transitions. [2023-11-06 22:56:42,990 INFO L78 Accepts]: Start accepts. Automaton has 17685 states and 28106 transitions. Word has length 123 [2023-11-06 22:56:42,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:42,991 INFO L495 AbstractCegarLoop]: Abstraction has 17685 states and 28106 transitions. [2023-11-06 22:56:42,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2023-11-06 22:56:42,991 INFO L276 IsEmpty]: Start isEmpty. Operand 17685 states and 28106 transitions. [2023-11-06 22:56:43,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-06 22:56:43,008 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:43,009 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] [2023-11-06 22:56:43,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:56:43,009 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:56:43,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:43,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1163840530, now seen corresponding path program 1 times [2023-11-06 22:56:43,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:43,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518547649] [2023-11-06 22:56:43,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:43,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:43,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:43,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:56:43,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:43,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:56:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:43,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-06 22:56:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:43,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-06 22:56:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:43,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-06 22:56:43,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:43,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:43,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:43,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518547649] [2023-11-06 22:56:43,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518547649] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:43,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:56:43,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:56:43,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604281707] [2023-11-06 22:56:43,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:43,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:56:43,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:43,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:56:43,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:56:43,277 INFO L87 Difference]: Start difference. First operand 17685 states and 28106 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2023-11-06 22:56:54,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:54,709 INFO L93 Difference]: Finished difference Result 63419 states and 100039 transitions. [2023-11-06 22:56:54,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:56:54,710 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 123 [2023-11-06 22:56:54,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:54,952 INFO L225 Difference]: With dead ends: 63419 [2023-11-06 22:56:54,952 INFO L226 Difference]: Without dead ends: 47870 [2023-11-06 22:56:55,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:56:55,014 INFO L413 NwaCegarLoop]: 4340 mSDtfsCounter, 5006 mSDsluCounter, 17125 mSDsCounter, 0 mSdLazyCounter, 2597 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5019 SdHoareTripleChecker+Valid, 21465 SdHoareTripleChecker+Invalid, 2652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:56:55,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5019 Valid, 21465 Invalid, 2652 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 2597 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-06 22:56:55,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47870 states. [2023-11-06 22:57:00,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47870 to 32634. [2023-11-06 22:57:00,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32634 states, 29789 states have (on average 1.538856624928665) internal successors, (45841), 29919 states have internal predecessors, (45841), 1941 states have call successors, (1941), 774 states have call predecessors, (1941), 902 states have return successors, (4256), 2068 states have call predecessors, (4256), 1941 states have call successors, (4256) [2023-11-06 22:57:00,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32634 states to 32634 states and 52038 transitions. [2023-11-06 22:57:00,514 INFO L78 Accepts]: Start accepts. Automaton has 32634 states and 52038 transitions. Word has length 123 [2023-11-06 22:57:00,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:00,515 INFO L495 AbstractCegarLoop]: Abstraction has 32634 states and 52038 transitions. [2023-11-06 22:57:00,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2023-11-06 22:57:00,515 INFO L276 IsEmpty]: Start isEmpty. Operand 32634 states and 52038 transitions. [2023-11-06 22:57:00,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-06 22:57:00,546 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:00,546 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] [2023-11-06 22:57:00,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:57:00,547 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:00,547 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:00,547 INFO L85 PathProgramCache]: Analyzing trace with hash 2074395564, now seen corresponding path program 1 times [2023-11-06 22:57:00,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:00,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955871260] [2023-11-06 22:57:00,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:00,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:00,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:00,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:57:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:00,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:57:00,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:00,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-06 22:57:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:00,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-06 22:57:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:00,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-06 22:57:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:00,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:00,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:00,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955871260] [2023-11-06 22:57:00,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955871260] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:00,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:00,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:57:00,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529189852] [2023-11-06 22:57:00,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:00,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:57:00,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:00,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:57:00,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:57:00,806 INFO L87 Difference]: Start difference. First operand 32634 states and 52038 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2023-11-06 22:57:21,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:21,229 INFO L93 Difference]: Finished difference Result 120870 states and 192805 transitions. [2023-11-06 22:57:21,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:57:21,229 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 123 [2023-11-06 22:57:21,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:21,631 INFO L225 Difference]: With dead ends: 120870 [2023-11-06 22:57:21,631 INFO L226 Difference]: Without dead ends: 90372 [2023-11-06 22:57:21,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:57:21,754 INFO L413 NwaCegarLoop]: 4341 mSDtfsCounter, 5156 mSDsluCounter, 17128 mSDsCounter, 0 mSdLazyCounter, 2153 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5178 SdHoareTripleChecker+Valid, 21469 SdHoareTripleChecker+Invalid, 2209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:21,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5178 Valid, 21469 Invalid, 2209 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 2153 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-06 22:57:21,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90372 states.