./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.06.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_d2547231-ebb9-40a6-9204-9b4456f0043b/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2547231-ebb9-40a6-9204-9b4456f0043b/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2547231-ebb9-40a6-9204-9b4456f0043b/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2547231-ebb9-40a6-9204-9b4456f0043b/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.06.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2547231-ebb9-40a6-9204-9b4456f0043b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2547231-ebb9-40a6-9204-9b4456f0043b/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 54f526c05851bf34c26c8de127e86052a91be3d9e5ccf7068c1070e69b950b3c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:37:23,183 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:37:23,248 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2547231-ebb9-40a6-9204-9b4456f0043b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 01:37:23,254 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:37:23,254 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:37:23,281 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:37:23,282 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:37:23,282 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:37:23,283 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:37:23,283 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:37:23,284 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:37:23,284 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:37:23,285 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:37:23,286 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:37:23,286 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:37:23,287 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:37:23,287 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:37:23,288 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:37:23,288 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:37:23,288 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:37:23,289 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:37:23,294 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:37:23,294 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:37:23,295 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:37:23,295 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:37:23,295 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:37:23,296 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:37:23,296 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:37:23,296 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:37:23,297 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:37:23,297 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:37:23,298 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:37:23,298 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:37:23,298 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:37:23,298 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:37:23,298 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:37:23,299 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:37:23,299 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:37:23,299 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:37:23,299 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:37:23,299 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:37:23,300 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:37:23,300 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_d2547231-ebb9-40a6-9204-9b4456f0043b/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2547231-ebb9-40a6-9204-9b4456f0043b/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54f526c05851bf34c26c8de127e86052a91be3d9e5ccf7068c1070e69b950b3c [2023-11-29 01:37:23,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:37:23,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:37:23,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:37:23,565 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:37:23,565 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:37:23,566 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2547231-ebb9-40a6-9204-9b4456f0043b/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.06.cil-2.c [2023-11-29 01:37:26,280 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:37:26,871 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:37:26,872 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2547231-ebb9-40a6-9204-9b4456f0043b/sv-benchmarks/c/combinations/Problem05_label45+token_ring.06.cil-2.c [2023-11-29 01:37:26,921 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2547231-ebb9-40a6-9204-9b4456f0043b/bin/uautomizer-verify-BQ2R08f2Ya/data/88e3a3aa1/cbbd1b599eaf487f9f21dcbfec026690/FLAG0cf8ca691 [2023-11-29 01:37:26,935 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2547231-ebb9-40a6-9204-9b4456f0043b/bin/uautomizer-verify-BQ2R08f2Ya/data/88e3a3aa1/cbbd1b599eaf487f9f21dcbfec026690 [2023-11-29 01:37:26,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:37:26,939 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:37:26,940 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:37:26,940 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:37:26,945 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:37:26,946 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:37:26" (1/1) ... [2023-11-29 01:37:26,947 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@133f7ef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:37:26, skipping insertion in model container [2023-11-29 01:37:26,947 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:37:26" (1/1) ... [2023-11-29 01:37:27,215 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:37:28,795 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_d2547231-ebb9-40a6-9204-9b4456f0043b/sv-benchmarks/c/combinations/Problem05_label45+token_ring.06.cil-2.c[380323,380336] [2023-11-29 01:37:28,820 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_d2547231-ebb9-40a6-9204-9b4456f0043b/sv-benchmarks/c/combinations/Problem05_label45+token_ring.06.cil-2.c[383339,383352] [2023-11-29 01:37:29,044 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:37:29,053 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:37:30,017 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_d2547231-ebb9-40a6-9204-9b4456f0043b/sv-benchmarks/c/combinations/Problem05_label45+token_ring.06.cil-2.c[380323,380336] [2023-11-29 01:37:30,022 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_d2547231-ebb9-40a6-9204-9b4456f0043b/sv-benchmarks/c/combinations/Problem05_label45+token_ring.06.cil-2.c[383339,383352] [2023-11-29 01:37:30,064 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:37:30,146 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:37:30,146 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:37:30 WrapperNode [2023-11-29 01:37:30,146 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:37:30,148 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:37:30,148 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:37:30,148 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:37:30,155 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:37:30" (1/1) ... [2023-11-29 01:37:30,226 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:37:30" (1/1) ... [2023-11-29 01:37:30,589 INFO L138 Inliner]: procedures = 56, calls = 59, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 12868 [2023-11-29 01:37:30,589 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:37:30,590 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:37:30,590 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:37:30,590 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:37:30,601 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:37:30" (1/1) ... [2023-11-29 01:37:30,601 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:37:30" (1/1) ... [2023-11-29 01:37:30,631 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:37:30" (1/1) ... [2023-11-29 01:37:30,690 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 01:37:30,691 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:37:30" (1/1) ... [2023-11-29 01:37:30,691 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:37:30" (1/1) ... [2023-11-29 01:37:30,854 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:37:30" (1/1) ... [2023-11-29 01:37:30,928 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:37:30" (1/1) ... [2023-11-29 01:37:30,947 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:37:30" (1/1) ... [2023-11-29 01:37:30,962 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:37:30" (1/1) ... [2023-11-29 01:37:30,995 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:37:30,995 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:37:30,996 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:37:30,996 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:37:30,996 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:37:30" (1/1) ... [2023-11-29 01:37:31,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:37:31,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2547231-ebb9-40a6-9204-9b4456f0043b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:37:31,019 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2547231-ebb9-40a6-9204-9b4456f0043b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:37:31,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2547231-ebb9-40a6-9204-9b4456f0043b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:37:31,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:37:31,060 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-29 01:37:31,060 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-29 01:37:31,060 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-29 01:37:31,061 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-29 01:37:31,061 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-29 01:37:31,061 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-29 01:37:31,061 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-29 01:37:31,061 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-29 01:37:31,061 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-29 01:37:31,061 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-29 01:37:31,061 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-29 01:37:31,062 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-29 01:37:31,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:37:31,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:37:31,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:37:31,168 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:37:31,170 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:37:38,536 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:37:38,682 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:37:38,683 INFO L309 CfgBuilder]: Removed 10 assume(true) statements. [2023-11-29 01:37:38,684 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:37:38 BoogieIcfgContainer [2023-11-29 01:37:38,685 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:37:38,688 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:37:38,688 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:37:38,691 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:37:38,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:37:26" (1/3) ... [2023-11-29 01:37:38,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b05e2e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:37:38, skipping insertion in model container [2023-11-29 01:37:38,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:37:30" (2/3) ... [2023-11-29 01:37:38,693 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b05e2e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:37:38, skipping insertion in model container [2023-11-29 01:37:38,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:37:38" (3/3) ... [2023-11-29 01:37:38,694 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.06.cil-2.c [2023-11-29 01:37:38,713 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:37:38,713 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 01:37:38,815 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:37:38,822 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5a2f9faa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:37:38,822 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 01:37:38,835 INFO L276 IsEmpty]: Start isEmpty. Operand has 2333 states, 2304 states have (on average 1.8815104166666667) internal successors, (4335), 2307 states have internal predecessors, (4335), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-29 01:37:38,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 01:37:38,849 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:37:38,850 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] [2023-11-29 01:37:38,850 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:37:38,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:37:38,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1304141885, now seen corresponding path program 1 times [2023-11-29 01:37:38,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:37:38,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054918878] [2023-11-29 01:37:38,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:37:38,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:37:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:39,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:37:39,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:39,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 01:37:39,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:39,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 01:37:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:39,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 01:37:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:39,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 01:37:39,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:39,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:37:39,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:37:39,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054918878] [2023-11-29 01:37:39,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054918878] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:37:39,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:37:39,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:37:39,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724444094] [2023-11-29 01:37:39,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:37:39,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:37:39,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:37:39,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:37:39,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:37:39,325 INFO L87 Difference]: Start difference. First operand has 2333 states, 2304 states have (on average 1.8815104166666667) internal successors, (4335), 2307 states have internal predecessors, (4335), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 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) [2023-11-29 01:37:40,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:37:40,741 INFO L93 Difference]: Finished difference Result 4728 states and 8858 transitions. [2023-11-29 01:37:40,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:37:40,744 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 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 101 [2023-11-29 01:37:40,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:37:40,776 INFO L225 Difference]: With dead ends: 4728 [2023-11-29 01:37:40,776 INFO L226 Difference]: Without dead ends: 2399 [2023-11-29 01:37:40,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:37:40,790 INFO L413 NwaCegarLoop]: 4143 mSDtfsCounter, 553 mSDsluCounter, 12072 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 16215 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:37:40,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 16215 Invalid, 643 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [44 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 01:37:40,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2399 states. [2023-11-29 01:37:40,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2399 to 2329. [2023-11-29 01:37:40,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2329 states, 2301 states have (on average 1.8457192524989134) internal successors, (4247), 2303 states have internal predecessors, (4247), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-29 01:37:40,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2329 states to 2329 states and 4287 transitions. [2023-11-29 01:37:40,954 INFO L78 Accepts]: Start accepts. Automaton has 2329 states and 4287 transitions. Word has length 101 [2023-11-29 01:37:40,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:37:40,955 INFO L495 AbstractCegarLoop]: Abstraction has 2329 states and 4287 transitions. [2023-11-29 01:37:40,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 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) [2023-11-29 01:37:40,955 INFO L276 IsEmpty]: Start isEmpty. Operand 2329 states and 4287 transitions. [2023-11-29 01:37:40,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 01:37:40,962 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:37:40,962 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] [2023-11-29 01:37:40,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:37:40,963 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:37:40,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:37:40,964 INFO L85 PathProgramCache]: Analyzing trace with hash -572921345, now seen corresponding path program 1 times [2023-11-29 01:37:40,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:37:40,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522711814] [2023-11-29 01:37:40,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:37:40,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:37:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:41,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:37:41,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:41,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 01:37:41,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:41,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 01:37:41,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:41,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 01:37:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:41,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 01:37:41,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:41,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:37:41,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:37:41,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522711814] [2023-11-29 01:37:41,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522711814] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:37:41,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:37:41,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:37:41,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865211212] [2023-11-29 01:37:41,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:37:41,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:37:41,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:37:41,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:37:41,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:37:41,290 INFO L87 Difference]: Start difference. First operand 2329 states and 4287 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-11-29 01:37:43,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:37:43,965 INFO L93 Difference]: Finished difference Result 2881 states and 5198 transitions. [2023-11-29 01:37:43,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:37:43,966 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-11-29 01:37:43,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:37:43,982 INFO L225 Difference]: With dead ends: 2881 [2023-11-29 01:37:43,982 INFO L226 Difference]: Without dead ends: 2685 [2023-11-29 01:37:43,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:37:43,986 INFO L413 NwaCegarLoop]: 4243 mSDtfsCounter, 4743 mSDsluCounter, 16733 mSDsCounter, 0 mSdLazyCounter, 2182 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4756 SdHoareTripleChecker+Valid, 20976 SdHoareTripleChecker+Invalid, 2236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:37:43,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4756 Valid, 20976 Invalid, 2236 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 2182 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 01:37:43,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2685 states. [2023-11-29 01:37:44,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2685 to 2536. [2023-11-29 01:37:44,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2536 states, 2483 states have (on average 1.829238824003222) internal successors, (4542), 2487 states have internal predecessors, (4542), 37 states have call successors, (37), 12 states have call predecessors, (37), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2023-11-29 01:37:44,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2536 states to 2536 states and 4623 transitions. [2023-11-29 01:37:44,059 INFO L78 Accepts]: Start accepts. Automaton has 2536 states and 4623 transitions. Word has length 101 [2023-11-29 01:37:44,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:37:44,060 INFO L495 AbstractCegarLoop]: Abstraction has 2536 states and 4623 transitions. [2023-11-29 01:37:44,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-11-29 01:37:44,060 INFO L276 IsEmpty]: Start isEmpty. Operand 2536 states and 4623 transitions. [2023-11-29 01:37:44,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 01:37:44,064 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:37:44,064 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] [2023-11-29 01:37:44,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:37:44,065 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:37:44,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:37:44,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1303561473, now seen corresponding path program 1 times [2023-11-29 01:37:44,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:37:44,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658963552] [2023-11-29 01:37:44,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:37:44,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:37:44,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:44,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:37:44,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:44,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 01:37:44,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:44,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 01:37:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:44,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 01:37:44,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:44,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 01:37:44,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:44,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:37:44,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:37:44,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658963552] [2023-11-29 01:37:44,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658963552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:37:44,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:37:44,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:37:44,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205929801] [2023-11-29 01:37:44,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:37:44,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:37:44,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:37:44,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:37:44,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:37:44,281 INFO L87 Difference]: Start difference. First operand 2536 states and 4623 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-11-29 01:37:46,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:37:46,326 INFO L93 Difference]: Finished difference Result 3580 states and 6330 transitions. [2023-11-29 01:37:46,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:37:46,327 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-11-29 01:37:46,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:37:46,342 INFO L225 Difference]: With dead ends: 3580 [2023-11-29 01:37:46,342 INFO L226 Difference]: Without dead ends: 3179 [2023-11-29 01:37:46,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:37:46,346 INFO L413 NwaCegarLoop]: 4203 mSDtfsCounter, 4768 mSDsluCounter, 16681 mSDsCounter, 0 mSdLazyCounter, 1969 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4781 SdHoareTripleChecker+Valid, 20884 SdHoareTripleChecker+Invalid, 2031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:37:46,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4781 Valid, 20884 Invalid, 2031 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 1969 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 01:37:46,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3179 states. [2023-11-29 01:37:46,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3179 to 2914. [2023-11-29 01:37:46,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2914 states, 2817 states have (on average 1.8008519701810437) internal successors, (5073), 2823 states have internal predecessors, (5073), 67 states have call successors, (67), 24 states have call predecessors, (67), 28 states have return successors, (84), 70 states have call predecessors, (84), 67 states have call successors, (84) [2023-11-29 01:37:46,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2914 states to 2914 states and 5224 transitions. [2023-11-29 01:37:46,435 INFO L78 Accepts]: Start accepts. Automaton has 2914 states and 5224 transitions. Word has length 101 [2023-11-29 01:37:46,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:37:46,436 INFO L495 AbstractCegarLoop]: Abstraction has 2914 states and 5224 transitions. [2023-11-29 01:37:46,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-11-29 01:37:46,437 INFO L276 IsEmpty]: Start isEmpty. Operand 2914 states and 5224 transitions. [2023-11-29 01:37:46,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 01:37:46,439 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:37:46,440 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] [2023-11-29 01:37:46,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 01:37:46,440 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:37:46,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:37:46,441 INFO L85 PathProgramCache]: Analyzing trace with hash -575569473, now seen corresponding path program 1 times [2023-11-29 01:37:46,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:37:46,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183268058] [2023-11-29 01:37:46,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:37:46,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:37:46,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:46,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:37:46,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:46,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 01:37:46,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:46,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 01:37:46,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:46,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 01:37:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:46,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 01:37:46,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:46,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:37:46,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:37:46,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183268058] [2023-11-29 01:37:46,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183268058] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:37:46,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:37:46,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:37:46,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827531037] [2023-11-29 01:37:46,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:37:46,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:37:46,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:37:46,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:37:46,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:37:46,692 INFO L87 Difference]: Start difference. First operand 2914 states and 5224 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-11-29 01:37:47,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:37:47,703 INFO L93 Difference]: Finished difference Result 3965 states and 6956 transitions. [2023-11-29 01:37:47,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:37:47,703 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-11-29 01:37:47,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:37:47,719 INFO L225 Difference]: With dead ends: 3965 [2023-11-29 01:37:47,719 INFO L226 Difference]: Without dead ends: 3184 [2023-11-29 01:37:47,723 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 [2023-11-29 01:37:47,724 INFO L413 NwaCegarLoop]: 4107 mSDtfsCounter, 4644 mSDsluCounter, 12226 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4658 SdHoareTripleChecker+Valid, 16333 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:37:47,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4658 Valid, 16333 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 963 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 01:37:47,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3184 states. [2023-11-29 01:37:47,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3184 to 2914. [2023-11-29 01:37:47,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2914 states, 2817 states have (on average 1.7990770323038694) internal successors, (5068), 2823 states have internal predecessors, (5068), 67 states have call successors, (67), 24 states have call predecessors, (67), 28 states have return successors, (84), 70 states have call predecessors, (84), 67 states have call successors, (84) [2023-11-29 01:37:47,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2914 states to 2914 states and 5219 transitions. [2023-11-29 01:37:47,820 INFO L78 Accepts]: Start accepts. Automaton has 2914 states and 5219 transitions. Word has length 101 [2023-11-29 01:37:47,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:37:47,820 INFO L495 AbstractCegarLoop]: Abstraction has 2914 states and 5219 transitions. [2023-11-29 01:37:47,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-11-29 01:37:47,820 INFO L276 IsEmpty]: Start isEmpty. Operand 2914 states and 5219 transitions. [2023-11-29 01:37:47,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 01:37:47,822 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:37:47,822 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] [2023-11-29 01:37:47,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 01:37:47,823 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:37:47,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:37:47,823 INFO L85 PathProgramCache]: Analyzing trace with hash 749286721, now seen corresponding path program 1 times [2023-11-29 01:37:47,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:37:47,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045729185] [2023-11-29 01:37:47,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:37:47,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:37:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:47,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:37:47,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:47,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 01:37:47,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:47,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 01:37:47,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:47,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 01:37:47,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:47,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 01:37:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:47,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:37:47,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:37:47,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045729185] [2023-11-29 01:37:47,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045729185] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:37:47,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:37:47,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:37:47,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002434635] [2023-11-29 01:37:47,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:37:47,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:37:47,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:37:47,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:37:47,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:37:48,000 INFO L87 Difference]: Start difference. First operand 2914 states and 5219 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-11-29 01:37:49,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:37:49,029 INFO L93 Difference]: Finished difference Result 3961 states and 6935 transitions. [2023-11-29 01:37:49,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:37:49,030 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-11-29 01:37:49,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:37:49,045 INFO L225 Difference]: With dead ends: 3961 [2023-11-29 01:37:49,046 INFO L226 Difference]: Without dead ends: 3180 [2023-11-29 01:37:49,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:37:49,050 INFO L413 NwaCegarLoop]: 4107 mSDtfsCounter, 4642 mSDsluCounter, 12226 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4656 SdHoareTripleChecker+Valid, 16333 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:37:49,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4656 Valid, 16333 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 01:37:49,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3180 states. [2023-11-29 01:37:49,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3180 to 2914. [2023-11-29 01:37:49,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2914 states, 2817 states have (on average 1.797302094426695) internal successors, (5063), 2823 states have internal predecessors, (5063), 67 states have call successors, (67), 24 states have call predecessors, (67), 28 states have return successors, (84), 70 states have call predecessors, (84), 67 states have call successors, (84) [2023-11-29 01:37:49,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2914 states to 2914 states and 5214 transitions. [2023-11-29 01:37:49,135 INFO L78 Accepts]: Start accepts. Automaton has 2914 states and 5214 transitions. Word has length 101 [2023-11-29 01:37:49,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:37:49,136 INFO L495 AbstractCegarLoop]: Abstraction has 2914 states and 5214 transitions. [2023-11-29 01:37:49,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-11-29 01:37:49,136 INFO L276 IsEmpty]: Start isEmpty. Operand 2914 states and 5214 transitions. [2023-11-29 01:37:49,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 01:37:49,138 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:37:49,138 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] [2023-11-29 01:37:49,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 01:37:49,138 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:37:49,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:37:49,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1978922625, now seen corresponding path program 1 times [2023-11-29 01:37:49,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:37:49,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803189938] [2023-11-29 01:37:49,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:37:49,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:37:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:49,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:37:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:49,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 01:37:49,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:49,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 01:37:49,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:49,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 01:37:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:49,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 01:37:49,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:49,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:37:49,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:37:49,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803189938] [2023-11-29 01:37:49,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803189938] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:37:49,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:37:49,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:37:49,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275550146] [2023-11-29 01:37:49,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:37:49,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:37:49,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:37:49,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:37:49,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:37:49,298 INFO L87 Difference]: Start difference. First operand 2914 states and 5214 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-11-29 01:37:50,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:37:50,503 INFO L93 Difference]: Finished difference Result 3956 states and 6912 transitions. [2023-11-29 01:37:50,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:37:50,503 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-11-29 01:37:50,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:37:50,521 INFO L225 Difference]: With dead ends: 3956 [2023-11-29 01:37:50,521 INFO L226 Difference]: Without dead ends: 3175 [2023-11-29 01:37:50,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:37:50,526 INFO L413 NwaCegarLoop]: 4107 mSDtfsCounter, 4555 mSDsluCounter, 16280 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4569 SdHoareTripleChecker+Valid, 20387 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:37:50,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4569 Valid, 20387 Invalid, 1093 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [53 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 01:37:50,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3175 states. [2023-11-29 01:37:50,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3175 to 2914. [2023-11-29 01:37:50,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2914 states, 2817 states have (on average 1.7955271565495208) internal successors, (5058), 2823 states have internal predecessors, (5058), 67 states have call successors, (67), 24 states have call predecessors, (67), 28 states have return successors, (84), 70 states have call predecessors, (84), 67 states have call successors, (84) [2023-11-29 01:37:50,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2914 states to 2914 states and 5209 transitions. [2023-11-29 01:37:50,632 INFO L78 Accepts]: Start accepts. Automaton has 2914 states and 5209 transitions. Word has length 101 [2023-11-29 01:37:50,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:37:50,632 INFO L495 AbstractCegarLoop]: Abstraction has 2914 states and 5209 transitions. [2023-11-29 01:37:50,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-11-29 01:37:50,633 INFO L276 IsEmpty]: Start isEmpty. Operand 2914 states and 5209 transitions. [2023-11-29 01:37:50,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 01:37:50,635 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:37:50,636 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] [2023-11-29 01:37:50,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 01:37:50,636 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:37:50,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:37:50,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1258206593, now seen corresponding path program 1 times [2023-11-29 01:37:50,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:37:50,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088707034] [2023-11-29 01:37:50,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:37:50,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:37:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:50,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:37:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:50,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 01:37:50,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:50,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 01:37:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:50,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 01:37:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:50,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 01:37:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:50,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:37:50,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:37:50,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088707034] [2023-11-29 01:37:50,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088707034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:37:50,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:37:50,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:37:50,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861674178] [2023-11-29 01:37:50,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:37:50,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:37:50,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:37:50,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:37:50,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:37:50,835 INFO L87 Difference]: Start difference. First operand 2914 states and 5209 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-11-29 01:37:52,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:37:52,862 INFO L93 Difference]: Finished difference Result 4927 states and 8441 transitions. [2023-11-29 01:37:52,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:37:52,863 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-11-29 01:37:52,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:37:52,880 INFO L225 Difference]: With dead ends: 4927 [2023-11-29 01:37:52,880 INFO L226 Difference]: Without dead ends: 4148 [2023-11-29 01:37:52,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:37:52,884 INFO L413 NwaCegarLoop]: 4237 mSDtfsCounter, 4734 mSDsluCounter, 16733 mSDsCounter, 0 mSdLazyCounter, 2073 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4747 SdHoareTripleChecker+Valid, 20970 SdHoareTripleChecker+Invalid, 2129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:37:52,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4747 Valid, 20970 Invalid, 2129 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 2073 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 01:37:52,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2023-11-29 01:37:53,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 3681. [2023-11-29 01:37:53,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3681 states, 3496 states have (on average 1.7502860411899313) internal successors, (6119), 3506 states have internal predecessors, (6119), 127 states have call successors, (127), 48 states have call predecessors, (127), 56 states have return successors, (170), 134 states have call predecessors, (170), 127 states have call successors, (170) [2023-11-29 01:37:53,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3681 states to 3681 states and 6416 transitions. [2023-11-29 01:37:53,107 INFO L78 Accepts]: Start accepts. Automaton has 3681 states and 6416 transitions. Word has length 101 [2023-11-29 01:37:53,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:37:53,108 INFO L495 AbstractCegarLoop]: Abstraction has 3681 states and 6416 transitions. [2023-11-29 01:37:53,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-11-29 01:37:53,109 INFO L276 IsEmpty]: Start isEmpty. Operand 3681 states and 6416 transitions. [2023-11-29 01:37:53,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 01:37:53,113 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:37:53,114 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] [2023-11-29 01:37:53,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 01:37:53,114 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:37:53,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:37:53,115 INFO L85 PathProgramCache]: Analyzing trace with hash 115704127, now seen corresponding path program 1 times [2023-11-29 01:37:53,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:37:53,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961144151] [2023-11-29 01:37:53,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:37:53,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:37:53,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:53,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:37:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:53,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 01:37:53,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:53,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 01:37:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:53,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 01:37:53,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:53,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 01:37:53,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:53,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:37:53,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:37:53,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961144151] [2023-11-29 01:37:53,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961144151] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:37:53,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:37:53,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:37:53,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484493901] [2023-11-29 01:37:53,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:37:53,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:37:53,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:37:53,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:37:53,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:37:53,335 INFO L87 Difference]: Start difference. First operand 3681 states and 6416 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-11-29 01:37:55,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:37:55,790 INFO L93 Difference]: Finished difference Result 8286 states and 13806 transitions. [2023-11-29 01:37:55,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:37:55,791 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-11-29 01:37:55,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:37:55,822 INFO L225 Difference]: With dead ends: 8286 [2023-11-29 01:37:55,822 INFO L226 Difference]: Without dead ends: 6740 [2023-11-29 01:37:55,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:37:55,829 INFO L413 NwaCegarLoop]: 4236 mSDtfsCounter, 4964 mSDsluCounter, 16728 mSDsCounter, 0 mSdLazyCounter, 2054 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4984 SdHoareTripleChecker+Valid, 20964 SdHoareTripleChecker+Invalid, 2113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:37:55,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4984 Valid, 20964 Invalid, 2113 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 2054 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 01:37:55,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6740 states. [2023-11-29 01:37:55,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6740 to 5206. [2023-11-29 01:37:55,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5206 states, 4853 states have (on average 1.6985369874304554) internal successors, (8243), 4871 states have internal predecessors, (8243), 239 states have call successors, (239), 96 states have call predecessors, (239), 112 states have return successors, (352), 254 states have call predecessors, (352), 239 states have call successors, (352) [2023-11-29 01:37:55,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5206 states to 5206 states and 8834 transitions. [2023-11-29 01:37:55,997 INFO L78 Accepts]: Start accepts. Automaton has 5206 states and 8834 transitions. Word has length 101 [2023-11-29 01:37:55,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:37:55,997 INFO L495 AbstractCegarLoop]: Abstraction has 5206 states and 8834 transitions. [2023-11-29 01:37:55,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-11-29 01:37:55,997 INFO L276 IsEmpty]: Start isEmpty. Operand 5206 states and 8834 transitions. [2023-11-29 01:37:56,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 01:37:56,001 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:37:56,001 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] [2023-11-29 01:37:56,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 01:37:56,001 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:37:56,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:37:56,002 INFO L85 PathProgramCache]: Analyzing trace with hash 355943873, now seen corresponding path program 1 times [2023-11-29 01:37:56,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:37:56,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622750098] [2023-11-29 01:37:56,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:37:56,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:37:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:56,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:37:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:56,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 01:37:56,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:56,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 01:37:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:56,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 01:37:56,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:56,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 01:37:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:56,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:37:56,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:37:56,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622750098] [2023-11-29 01:37:56,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622750098] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:37:56,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:37:56,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:37:56,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969495692] [2023-11-29 01:37:56,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:37:56,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:37:56,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:37:56,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:37:56,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:37:56,176 INFO L87 Difference]: Start difference. First operand 5206 states and 8834 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-11-29 01:37:58,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:37:58,700 INFO L93 Difference]: Finished difference Result 13949 states and 22916 transitions. [2023-11-29 01:37:58,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:37:58,700 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-11-29 01:37:58,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:37:58,728 INFO L225 Difference]: With dead ends: 13949 [2023-11-29 01:37:58,728 INFO L226 Difference]: Without dead ends: 10878 [2023-11-29 01:37:58,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:37:58,738 INFO L413 NwaCegarLoop]: 4235 mSDtfsCounter, 4907 mSDsluCounter, 16728 mSDsCounter, 0 mSdLazyCounter, 1994 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4927 SdHoareTripleChecker+Valid, 20963 SdHoareTripleChecker+Invalid, 2053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:37:58,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4927 Valid, 20963 Invalid, 2053 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 1994 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 01:37:58,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10878 states. [2023-11-29 01:37:59,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10878 to 8271. [2023-11-29 01:37:59,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8271 states, 7590 states have (on average 1.6517786561264822) internal successors, (12537), 7624 states have internal predecessors, (12537), 455 states have call successors, (455), 192 states have call predecessors, (455), 224 states have return successors, (762), 486 states have call predecessors, (762), 455 states have call successors, (762) [2023-11-29 01:37:59,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8271 states to 8271 states and 13754 transitions. [2023-11-29 01:37:59,086 INFO L78 Accepts]: Start accepts. Automaton has 8271 states and 13754 transitions. Word has length 101 [2023-11-29 01:37:59,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:37:59,086 INFO L495 AbstractCegarLoop]: Abstraction has 8271 states and 13754 transitions. [2023-11-29 01:37:59,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-11-29 01:37:59,086 INFO L276 IsEmpty]: Start isEmpty. Operand 8271 states and 13754 transitions. [2023-11-29 01:37:59,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 01:37:59,094 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:37:59,094 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] [2023-11-29 01:37:59,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 01:37:59,095 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:37:59,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:37:59,095 INFO L85 PathProgramCache]: Analyzing trace with hash 383009475, now seen corresponding path program 1 times [2023-11-29 01:37:59,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:37:59,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505708044] [2023-11-29 01:37:59,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:37:59,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:37:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:59,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:37:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:59,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 01:37:59,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:59,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 01:37:59,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:59,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 01:37:59,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:59,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 01:37:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:59,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:37:59,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:37:59,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505708044] [2023-11-29 01:37:59,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505708044] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:37:59,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:37:59,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:37:59,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684405397] [2023-11-29 01:37:59,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:37:59,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:37:59,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:37:59,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:37:59,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:37:59,276 INFO L87 Difference]: Start difference. First operand 8271 states and 13754 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-11-29 01:38:01,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:38:01,700 INFO L93 Difference]: Finished difference Result 25224 states and 41230 transitions. [2023-11-29 01:38:01,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:38:01,701 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-11-29 01:38:01,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:38:01,773 INFO L225 Difference]: With dead ends: 25224 [2023-11-29 01:38:01,774 INFO L226 Difference]: Without dead ends: 19088 [2023-11-29 01:38:01,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:38:01,800 INFO L413 NwaCegarLoop]: 4204 mSDtfsCounter, 4884 mSDsluCounter, 16679 mSDsCounter, 0 mSdLazyCounter, 1857 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4904 SdHoareTripleChecker+Valid, 20883 SdHoareTripleChecker+Invalid, 1924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:38:01,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4904 Valid, 20883 Invalid, 1924 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 1857 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 01:38:01,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19088 states. [2023-11-29 01:38:02,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19088 to 14401. [2023-11-29 01:38:02,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14401 states, 13080 states have (on average 1.6175076452599388) internal successors, (21157), 13146 states have internal predecessors, (21157), 871 states have call successors, (871), 384 states have call predecessors, (871), 448 states have return successors, (1728), 934 states have call predecessors, (1728), 871 states have call successors, (1728) [2023-11-29 01:38:02,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14401 states to 14401 states and 23756 transitions. [2023-11-29 01:38:02,571 INFO L78 Accepts]: Start accepts. Automaton has 14401 states and 23756 transitions. Word has length 101 [2023-11-29 01:38:02,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:38:02,571 INFO L495 AbstractCegarLoop]: Abstraction has 14401 states and 23756 transitions. [2023-11-29 01:38:02,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-11-29 01:38:02,571 INFO L276 IsEmpty]: Start isEmpty. Operand 14401 states and 23756 transitions. [2023-11-29 01:38:02,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 01:38:02,585 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:38:02,586 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] [2023-11-29 01:38:02,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 01:38:02,586 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:38:02,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:38:02,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1694327423, now seen corresponding path program 1 times [2023-11-29 01:38:02,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:38:02,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241036727] [2023-11-29 01:38:02,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:38:02,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:38:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:38:02,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:38:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:38:02,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 01:38:02,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:38:02,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 01:38:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:38:02,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 01:38:02,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:38:02,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 01:38:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:38:02,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:38:02,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:38:02,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241036727] [2023-11-29 01:38:02,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241036727] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:38:02,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:38:02,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:38:02,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703971973] [2023-11-29 01:38:02,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:38:02,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:38:02,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:38:02,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:38:02,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:38:02,773 INFO L87 Difference]: Start difference. First operand 14401 states and 23756 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-11-29 01:38:06,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:38:06,007 INFO L93 Difference]: Finished difference Result 47294 states and 77674 transitions. [2023-11-29 01:38:06,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:38:06,008 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-11-29 01:38:06,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:38:06,106 INFO L225 Difference]: With dead ends: 47294 [2023-11-29 01:38:06,106 INFO L226 Difference]: Without dead ends: 35028 [2023-11-29 01:38:06,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:38:06,157 INFO L413 NwaCegarLoop]: 4235 mSDtfsCounter, 4775 mSDsluCounter, 16728 mSDsCounter, 0 mSdLazyCounter, 2171 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4787 SdHoareTripleChecker+Valid, 20963 SdHoareTripleChecker+Invalid, 2229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:38:06,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4787 Valid, 20963 Invalid, 2229 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 2171 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 01:38:06,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35028 states. [2023-11-29 01:38:07,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35028 to 26661. [2023-11-29 01:38:07,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26661 states, 24092 states have (on average 1.596422048812884) internal successors, (38461), 24222 states have internal predecessors, (38461), 1671 states have call successors, (1671), 768 states have call predecessors, (1671), 896 states have return successors, (4114), 1798 states have call predecessors, (4114), 1671 states have call successors, (4114) [2023-11-29 01:38:07,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26661 states to 26661 states and 44246 transitions. [2023-11-29 01:38:07,451 INFO L78 Accepts]: Start accepts. Automaton has 26661 states and 44246 transitions. Word has length 101 [2023-11-29 01:38:07,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:38:07,451 INFO L495 AbstractCegarLoop]: Abstraction has 26661 states and 44246 transitions. [2023-11-29 01:38:07,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-11-29 01:38:07,452 INFO L276 IsEmpty]: Start isEmpty. Operand 26661 states and 44246 transitions. [2023-11-29 01:38:07,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 01:38:07,467 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:38:07,467 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] [2023-11-29 01:38:07,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 01:38:07,468 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:38:07,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:38:07,468 INFO L85 PathProgramCache]: Analyzing trace with hash 39777027, now seen corresponding path program 1 times [2023-11-29 01:38:07,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:38:07,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250841092] [2023-11-29 01:38:07,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:38:07,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:38:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:38:07,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:38:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:38:07,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 01:38:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:38:07,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 01:38:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:38:07,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 01:38:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:38:07,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 01:38:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:38:07,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:38:07,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:38:07,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250841092] [2023-11-29 01:38:07,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250841092] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:38:07,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:38:07,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:38:07,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036472672] [2023-11-29 01:38:07,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:38:07,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:38:07,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:38:07,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:38:07,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:38:07,617 INFO L87 Difference]: Start difference. First operand 26661 states and 44246 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-11-29 01:38:11,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:38:11,188 INFO L93 Difference]: Finished difference Result 90474 states and 150842 transitions. [2023-11-29 01:38:11,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:38:11,189 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-11-29 01:38:11,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:38:11,397 INFO L225 Difference]: With dead ends: 90474 [2023-11-29 01:38:11,397 INFO L226 Difference]: Without dead ends: 65948 [2023-11-29 01:38:11,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:38:11,456 INFO L413 NwaCegarLoop]: 4238 mSDtfsCounter, 4805 mSDsluCounter, 16728 mSDsCounter, 0 mSdLazyCounter, 1970 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4825 SdHoareTripleChecker+Valid, 20966 SdHoareTripleChecker+Invalid, 2029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:38:11,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4825 Valid, 20966 Invalid, 2029 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 1970 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 01:38:11,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65948 states. [2023-11-29 01:38:14,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65948 to 51181. [2023-11-29 01:38:14,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51181 states, 46180 states have (on average 1.585036812472932) internal successors, (73197), 46438 states have internal predecessors, (73197), 3207 states have call successors, (3207), 1536 states have call predecessors, (3207), 1792 states have return successors, (10280), 3462 states have call predecessors, (10280), 3207 states have call successors, (10280) [2023-11-29 01:38:14,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51181 states to 51181 states and 86684 transitions. [2023-11-29 01:38:14,226 INFO L78 Accepts]: Start accepts. Automaton has 51181 states and 86684 transitions. Word has length 101 [2023-11-29 01:38:14,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:38:14,227 INFO L495 AbstractCegarLoop]: Abstraction has 51181 states and 86684 transitions. [2023-11-29 01:38:14,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-11-29 01:38:14,227 INFO L276 IsEmpty]: Start isEmpty. Operand 51181 states and 86684 transitions. [2023-11-29 01:38:14,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 01:38:14,367 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:38:14,367 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] [2023-11-29 01:38:14,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 01:38:14,368 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:38:14,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:38:14,368 INFO L85 PathProgramCache]: Analyzing trace with hash 926999873, now seen corresponding path program 1 times [2023-11-29 01:38:14,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:38:14,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519341198] [2023-11-29 01:38:14,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:38:14,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:38:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:38:14,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:38:14,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:38:14,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 01:38:14,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:38:14,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 01:38:14,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:38:14,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 01:38:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:38:14,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 01:38:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:38:14,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:38:14,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:38:14,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519341198] [2023-11-29 01:38:14,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519341198] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:38:14,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:38:14,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:38:14,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765004329] [2023-11-29 01:38:14,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:38:14,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:38:14,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:38:14,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:38:14,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:38:14,525 INFO L87 Difference]: Start difference. First operand 51181 states and 86684 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-11-29 01:38:20,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:38:20,104 INFO L93 Difference]: Finished difference Result 174914 states and 299682 transitions. [2023-11-29 01:38:20,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:38:20,105 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-11-29 01:38:20,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:38:20,527 INFO L225 Difference]: With dead ends: 174914 [2023-11-29 01:38:20,527 INFO L226 Difference]: Without dead ends: 125868 [2023-11-29 01:38:20,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:38:20,684 INFO L413 NwaCegarLoop]: 4236 mSDtfsCounter, 4756 mSDsluCounter, 16728 mSDsCounter, 0 mSdLazyCounter, 2056 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4768 SdHoareTripleChecker+Valid, 20964 SdHoareTripleChecker+Invalid, 2115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:38:20,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4768 Valid, 20964 Invalid, 2115 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 2056 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 01:38:20,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125868 states. [2023-11-29 01:38:26,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125868 to 100221. [2023-11-29 01:38:26,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100221 states, 90484 states have (on average 1.5795610273639538) internal successors, (142925), 90998 states have internal predecessors, (142925), 6151 states have call successors, (6151), 3072 states have call predecessors, (6151), 3584 states have return successors, (26858), 6662 states have call predecessors, (26858), 6151 states have call successors, (26858) [2023-11-29 01:38:26,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100221 states to 100221 states and 175934 transitions. [2023-11-29 01:38:26,474 INFO L78 Accepts]: Start accepts. Automaton has 100221 states and 175934 transitions. Word has length 101 [2023-11-29 01:38:26,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:38:26,474 INFO L495 AbstractCegarLoop]: Abstraction has 100221 states and 175934 transitions. [2023-11-29 01:38:26,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2023-11-29 01:38:26,475 INFO L276 IsEmpty]: Start isEmpty. Operand 100221 states and 175934 transitions. [2023-11-29 01:38:26,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 01:38:26,720 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:38:26,720 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] [2023-11-29 01:38:26,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 01:38:26,720 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:38:26,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:38:26,721 INFO L85 PathProgramCache]: Analyzing trace with hash -984042685, now seen corresponding path program 1 times [2023-11-29 01:38:26,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:38:26,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089071516] [2023-11-29 01:38:26,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:38:26,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:38:26,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:38:26,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:38:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:38:26,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 01:38:26,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:38:26,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 01:38:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:38:26,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 01:38:26,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:38:26,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 01:38:26,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:38:26,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:38:26,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:38:26,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089071516] [2023-11-29 01:38:26,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089071516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:38:26,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:38:26,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:38:26,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283310917] [2023-11-29 01:38:26,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:38:26,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:38:26,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:38:26,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:38:26,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:38:26,865 INFO L87 Difference]: Start difference. First operand 100221 states and 175934 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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) [2023-11-29 01:38:35,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:38:35,972 INFO L93 Difference]: Finished difference Result 338435 states and 586502 transitions. [2023-11-29 01:38:35,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:38:35,973 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2023-11-29 01:38:35,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:38:36,871 INFO L225 Difference]: With dead ends: 338435 [2023-11-29 01:38:36,871 INFO L226 Difference]: Without dead ends: 240349 [2023-11-29 01:38:37,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:38:37,044 INFO L413 NwaCegarLoop]: 4285 mSDtfsCounter, 5001 mSDsluCounter, 12453 mSDsCounter, 0 mSdLazyCounter, 1712 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5034 SdHoareTripleChecker+Valid, 16738 SdHoareTripleChecker+Invalid, 1795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:38:37,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5034 Valid, 16738 Invalid, 1795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1712 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 01:38:37,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240349 states. [2023-11-29 01:38:46,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240349 to 195743. [2023-11-29 01:38:47,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195743 states, 176277 states have (on average 1.567096104426556) internal successors, (276243), 177815 states have internal predecessors, (276243), 12296 states have call successors, (12296), 6144 states have call predecessors, (12296), 7168 states have return successors, (53197), 12295 states have call predecessors, (53197), 12296 states have call successors, (53197) [2023-11-29 01:38:47,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195743 states to 195743 states and 341736 transitions. [2023-11-29 01:38:47,814 INFO L78 Accepts]: Start accepts. Automaton has 195743 states and 341736 transitions. Word has length 101 [2023-11-29 01:38:47,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:38:47,815 INFO L495 AbstractCegarLoop]: Abstraction has 195743 states and 341736 transitions. [2023-11-29 01:38:47,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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) [2023-11-29 01:38:47,815 INFO L276 IsEmpty]: Start isEmpty. Operand 195743 states and 341736 transitions. [2023-11-29 01:38:48,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-29 01:38:48,062 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:38:48,062 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:38:48,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 01:38:48,062 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:38:48,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:38:48,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1905912206, now seen corresponding path program 1 times [2023-11-29 01:38:48,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:38:48,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546094937] [2023-11-29 01:38:48,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:38:48,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:38:48,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:38:48,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:38:48,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:38:48,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 01:38:48,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:38:48,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 01:38:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:38:48,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 01:38:48,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:38:48,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 01:38:48,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:38:48,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-29 01:38:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:38:48,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 01:38:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:38:48,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-11-29 01:38:48,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:38:48,580 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 01:38:48,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:38:48,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546094937] [2023-11-29 01:38:48,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546094937] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:38:48,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523199656] [2023-11-29 01:38:48,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:38:48,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:38:48,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2547231-ebb9-40a6-9204-9b4456f0043b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:38:48,583 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2547231-ebb9-40a6-9204-9b4456f0043b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:38:48,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2547231-ebb9-40a6-9204-9b4456f0043b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:38:48,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:38:48,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:38:48,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:38:48,847 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-29 01:38:48,847 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:38:48,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523199656] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:38:48,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:38:48,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-11-29 01:38:48,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970783111] [2023-11-29 01:38:48,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:38:48,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:38:48,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:38:48,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:38:48,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:38:48,850 INFO L87 Difference]: Start difference. First operand 195743 states and 341736 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 01:39:03,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:03,732 INFO L93 Difference]: Finished difference Result 579885 states and 1017754 transitions. [2023-11-29 01:39:03,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:39:03,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 163 [2023-11-29 01:39:03,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:05,263 INFO L225 Difference]: With dead ends: 579885 [2023-11-29 01:39:05,264 INFO L226 Difference]: Without dead ends: 386277 [2023-11-29 01:39:05,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:39:05,829 INFO L413 NwaCegarLoop]: 4254 mSDtfsCounter, 4227 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4227 SdHoareTripleChecker+Valid, 4527 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:39:05,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4227 Valid, 4527 Invalid, 60 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:39:06,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386277 states. [2023-11-29 01:39:23,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386277 to 385251. [2023-11-29 01:39:23,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385251 states, 346839 states have (on average 1.562266642447937) internal successors, (541855), 349913 states have internal predecessors, (541855), 24074 states have call successors, (24074), 12288 states have call predecessors, (24074), 14336 states have return successors, (105363), 23561 states have call predecessors, (105363), 24074 states have call successors, (105363) [2023-11-29 01:39:25,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385251 states to 385251 states and 671292 transitions. [2023-11-29 01:39:25,172 INFO L78 Accepts]: Start accepts. Automaton has 385251 states and 671292 transitions. Word has length 163 [2023-11-29 01:39:25,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:39:25,172 INFO L495 AbstractCegarLoop]: Abstraction has 385251 states and 671292 transitions. [2023-11-29 01:39:25,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 01:39:25,173 INFO L276 IsEmpty]: Start isEmpty. Operand 385251 states and 671292 transitions. [2023-11-29 01:39:25,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-29 01:39:25,962 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:39:25,963 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:39:25,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2547231-ebb9-40a6-9204-9b4456f0043b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:39:26,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2547231-ebb9-40a6-9204-9b4456f0043b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:26,164 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:39:26,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:39:26,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1677556498, now seen corresponding path program 1 times [2023-11-29 01:39:26,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:39:26,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042184079] [2023-11-29 01:39:26,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:26,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:39:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:26,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 01:39:26,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:26,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 01:39:26,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:26,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 01:39:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:26,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 01:39:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:26,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 01:39:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:26,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-29 01:39:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:26,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-29 01:39:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:26,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-11-29 01:39:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:26,355 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 01:39:26,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:39:26,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042184079] [2023-11-29 01:39:26,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042184079] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:39:26,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311434795] [2023-11-29 01:39:26,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:39:26,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:39:26,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2547231-ebb9-40a6-9204-9b4456f0043b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:39:26,357 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2547231-ebb9-40a6-9204-9b4456f0043b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:39:26,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2547231-ebb9-40a6-9204-9b4456f0043b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:39:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:39:26,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 724 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:39:26,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:39:26,611 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-29 01:39:26,611 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:39:26,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311434795] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:39:26,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:39:26,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-11-29 01:39:26,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788091696] [2023-11-29 01:39:26,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:39:26,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:39:26,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:39:26,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:39:26,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:39:26,614 INFO L87 Difference]: Start difference. First operand 385251 states and 671292 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 01:39:56,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:39:56,818 INFO L93 Difference]: Finished difference Result 1145337 states and 2006936 transitions. [2023-11-29 01:39:56,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:39:56,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 2 states have internal predecessors, (130), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 163 [2023-11-29 01:39:56,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:39:59,790 INFO L225 Difference]: With dead ends: 1145337 [2023-11-29 01:39:59,791 INFO L226 Difference]: Without dead ends: 762221 [2023-11-29 01:40:00,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:40:00,672 INFO L413 NwaCegarLoop]: 4254 mSDtfsCounter, 4217 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4217 SdHoareTripleChecker+Valid, 4527 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:40:00,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4217 Valid, 4527 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:40:01,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762221 states. [2023-11-29 01:40:35,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762221 to 760171. [2023-11-29 01:40:36,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760171 states, 684379 states have (on average 1.5582345454784556) internal successors, (1066423), 690525 states have internal predecessors, (1066423), 47118 states have call successors, (47118), 24576 states have call predecessors, (47118), 28672 states have return successors, (209183), 45581 states have call predecessors, (209183), 47118 states have call successors, (209183)