./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.05.cil-1.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_bba0aa0a-b54a-4003-b9e1-93acb05a5e19/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba0aa0a-b54a-4003-b9e1-93acb05a5e19/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba0aa0a-b54a-4003-b9e1-93acb05a5e19/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba0aa0a-b54a-4003-b9e1-93acb05a5e19/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.05.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba0aa0a-b54a-4003-b9e1-93acb05a5e19/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba0aa0a-b54a-4003-b9e1-93acb05a5e19/bin/uautomizer-verify-NlZe1sFDwI --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 a591e0388ece712c75839bd5d84404e2239aa3c25676baafcef8f3340008bf9e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:38:37,631 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:38:37,748 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba0aa0a-b54a-4003-b9e1-93acb05a5e19/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 21:38:37,757 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:38:37,758 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:38:37,790 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:38:37,790 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:38:37,791 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:38:37,792 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:38:37,792 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:38:37,793 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:38:37,794 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:38:37,795 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:38:37,795 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:38:37,796 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:38:37,796 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:38:37,797 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 21:38:37,797 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:38:37,798 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:38:37,799 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:38:37,799 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:38:37,802 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 21:38:37,803 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:38:37,803 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 21:38:37,804 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:38:37,804 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 21:38:37,805 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:38:37,805 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:38:37,806 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:38:37,807 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:38:37,808 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:38:37,809 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:38:37,809 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:38:37,809 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:38:37,810 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 21:38:37,810 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:38:37,810 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:38:37,811 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:38:37,811 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:38:37,811 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 21:38:37,811 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:38:37,812 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:38:37,812 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_bba0aa0a-b54a-4003-b9e1-93acb05a5e19/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba0aa0a-b54a-4003-b9e1-93acb05a5e19/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a591e0388ece712c75839bd5d84404e2239aa3c25676baafcef8f3340008bf9e [2023-11-24 21:38:38,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:38:38,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:38:38,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:38:38,142 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:38:38,142 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:38:38,144 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba0aa0a-b54a-4003-b9e1-93acb05a5e19/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.05.cil-1.c [2023-11-24 21:38:41,303 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:38:42,138 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:38:42,139 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba0aa0a-b54a-4003-b9e1-93acb05a5e19/sv-benchmarks/c/combinations/Problem05_label45+token_ring.05.cil-1.c [2023-11-24 21:38:42,198 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba0aa0a-b54a-4003-b9e1-93acb05a5e19/bin/uautomizer-verify-NlZe1sFDwI/data/fbe593e5e/f8b7aa09ea21422d8068ee456118f4ce/FLAG22b3be286 [2023-11-24 21:38:42,219 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba0aa0a-b54a-4003-b9e1-93acb05a5e19/bin/uautomizer-verify-NlZe1sFDwI/data/fbe593e5e/f8b7aa09ea21422d8068ee456118f4ce [2023-11-24 21:38:42,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:38:42,231 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:38:42,234 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:38:42,234 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:38:42,240 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:38:42,241 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:38:42" (1/1) ... [2023-11-24 21:38:42,242 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d14a950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:38:42, skipping insertion in model container [2023-11-24 21:38:42,242 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:38:42" (1/1) ... [2023-11-24 21:38:42,526 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:38:44,922 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_bba0aa0a-b54a-4003-b9e1-93acb05a5e19/sv-benchmarks/c/combinations/Problem05_label45+token_ring.05.cil-1.c[380323,380336] [2023-11-24 21:38:44,951 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_bba0aa0a-b54a-4003-b9e1-93acb05a5e19/sv-benchmarks/c/combinations/Problem05_label45+token_ring.05.cil-1.c[383339,383352] [2023-11-24 21:38:45,178 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:38:45,190 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:38:46,344 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_bba0aa0a-b54a-4003-b9e1-93acb05a5e19/sv-benchmarks/c/combinations/Problem05_label45+token_ring.05.cil-1.c[380323,380336] [2023-11-24 21:38:46,351 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_bba0aa0a-b54a-4003-b9e1-93acb05a5e19/sv-benchmarks/c/combinations/Problem05_label45+token_ring.05.cil-1.c[383339,383352] [2023-11-24 21:38:46,390 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:38:46,491 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:38:46,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:38:46 WrapperNode [2023-11-24 21:38:46,492 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:38:46,494 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:38:46,494 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:38:46,494 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:38:46,502 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:38:46" (1/1) ... [2023-11-24 21:38:46,672 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:38:46" (1/1) ... [2023-11-24 21:38:47,015 INFO L138 Inliner]: procedures = 54, calls = 56, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 12808 [2023-11-24 21:38:47,015 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:38:47,016 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:38:47,017 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:38:47,017 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:38:47,031 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:38:46" (1/1) ... [2023-11-24 21:38:47,032 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:38:46" (1/1) ... [2023-11-24 21:38:47,077 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:38:46" (1/1) ... [2023-11-24 21:38:47,353 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]. [2023-11-24 21:38:47,353 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:38:46" (1/1) ... [2023-11-24 21:38:47,354 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:38:46" (1/1) ... [2023-11-24 21:38:47,545 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:38:46" (1/1) ... [2023-11-24 21:38:47,667 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:38:46" (1/1) ... [2023-11-24 21:38:47,692 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:38:46" (1/1) ... [2023-11-24 21:38:47,718 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:38:46" (1/1) ... [2023-11-24 21:38:47,811 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:38:47,823 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:38:47,824 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:38:47,824 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:38:47,825 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:38:46" (1/1) ... [2023-11-24 21:38:47,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:38:47,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba0aa0a-b54a-4003-b9e1-93acb05a5e19/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:38:47,904 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba0aa0a-b54a-4003-b9e1-93acb05a5e19/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:38:47,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bba0aa0a-b54a-4003-b9e1-93acb05a5e19/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:38:47,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:38:47,955 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-24 21:38:47,955 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-24 21:38:47,955 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-24 21:38:47,957 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-24 21:38:47,957 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-24 21:38:47,958 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-24 21:38:47,958 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-24 21:38:47,958 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-24 21:38:47,958 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-24 21:38:47,959 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-24 21:38:47,959 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-24 21:38:47,959 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-24 21:38:47,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:38:47,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:38:47,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:38:48,129 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:38:48,131 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:38:57,989 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:38:58,131 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:38:58,131 INFO L309 CfgBuilder]: Removed 9 assume(true) statements. [2023-11-24 21:38:58,133 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:38:58 BoogieIcfgContainer [2023-11-24 21:38:58,134 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:38:58,137 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:38:58,137 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:38:58,144 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:38:58,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:38:42" (1/3) ... [2023-11-24 21:38:58,147 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a6ce94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:38:58, skipping insertion in model container [2023-11-24 21:38:58,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:38:46" (2/3) ... [2023-11-24 21:38:58,148 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a6ce94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:38:58, skipping insertion in model container [2023-11-24 21:38:58,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:38:58" (3/3) ... [2023-11-24 21:38:58,150 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.05.cil-1.c [2023-11-24 21:38:58,172 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:38:58,172 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-24 21:38:58,286 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:38:58,295 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;@187f615f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:38:58,295 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-24 21:38:58,311 INFO L276 IsEmpty]: Start isEmpty. Operand has 2310 states, 2282 states have (on average 1.8825591586327783) internal successors, (4296), 2285 states have internal predecessors, (4296), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-24 21:38:58,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-24 21:38:58,335 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:38:58,336 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:38:58,336 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:38:58,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:38:58,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1457270218, now seen corresponding path program 1 times [2023-11-24 21:38:58,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:38:58,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590062393] [2023-11-24 21:38:58,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:38:58,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:38:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:38:58,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:38:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:38:58,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-24 21:38:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:38:58,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-24 21:38:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:38:58,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-24 21:38:58,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:38:58,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-24 21:38:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:38:58,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:38:58,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:38:58,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590062393] [2023-11-24 21:38:58,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590062393] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:38:58,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:38:58,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:38:58,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435616776] [2023-11-24 21:38:58,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:38:58,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:38:58,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:38:58,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:38:58,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:38:58,993 INFO L87 Difference]: Start difference. First operand has 2310 states, 2282 states have (on average 1.8825591586327783) internal successors, (4296), 2285 states have internal predecessors, (4296), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 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) [2023-11-24 21:39:00,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:39:00,322 INFO L93 Difference]: Finished difference Result 4674 states and 8762 transitions. [2023-11-24 21:39:00,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:39:00,329 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 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 91 [2023-11-24 21:39:00,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:39:00,365 INFO L225 Difference]: With dead ends: 4674 [2023-11-24 21:39:00,365 INFO L226 Difference]: Without dead ends: 2366 [2023-11-24 21:39:00,377 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 [2023-11-24 21:39:00,383 INFO L413 NwaCegarLoop]: 4124 mSDtfsCounter, 480 mSDsluCounter, 12050 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 16174 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 21:39:00,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 16174 Invalid, 566 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [42 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-24 21:39:00,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2366 states. [2023-11-24 21:39:00,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2366 to 2306. [2023-11-24 21:39:00,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2306 states, 2279 states have (on average 1.8473014480035104) internal successors, (4210), 2281 states have internal predecessors, (4210), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-24 21:39:00,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2306 states to 2306 states and 4248 transitions. [2023-11-24 21:39:00,706 INFO L78 Accepts]: Start accepts. Automaton has 2306 states and 4248 transitions. Word has length 91 [2023-11-24 21:39:00,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:39:00,707 INFO L495 AbstractCegarLoop]: Abstraction has 2306 states and 4248 transitions. [2023-11-24 21:39:00,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 3 states have internal predecessors, (81), 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) [2023-11-24 21:39:00,707 INFO L276 IsEmpty]: Start isEmpty. Operand 2306 states and 4248 transitions. [2023-11-24 21:39:00,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-24 21:39:00,713 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:39:00,713 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] [2023-11-24 21:39:00,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:39:00,714 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:39:00,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:39:00,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1270939128, now seen corresponding path program 1 times [2023-11-24 21:39:00,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:39:00,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026014009] [2023-11-24 21:39:00,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:39:00,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:39:00,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:00,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:39:00,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:00,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-24 21:39:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:01,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-24 21:39:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:01,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-24 21:39:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:01,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-24 21:39:01,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:01,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:39:01,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:39:01,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026014009] [2023-11-24 21:39:01,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026014009] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:39:01,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:39:01,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:39:01,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149131162] [2023-11-24 21:39:01,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:39:01,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:39:01,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:39:01,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:39:01,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:39:01,047 INFO L87 Difference]: Start difference. First operand 2306 states and 4248 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2023-11-24 21:39:02,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:39:02,959 INFO L93 Difference]: Finished difference Result 2779 states and 5016 transitions. [2023-11-24 21:39:02,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:39:02,960 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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 91 [2023-11-24 21:39:02,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:39:02,980 INFO L225 Difference]: With dead ends: 2779 [2023-11-24 21:39:02,980 INFO L226 Difference]: Without dead ends: 2605 [2023-11-24 21:39:02,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:39:02,985 INFO L413 NwaCegarLoop]: 4103 mSDtfsCounter, 4671 mSDsluCounter, 12286 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4683 SdHoareTripleChecker+Valid, 16389 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-24 21:39:02,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4683 Valid, 16389 Invalid, 1195 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-24 21:39:02,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2605 states. [2023-11-24 21:39:03,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2605 to 2486. [2023-11-24 21:39:03,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2486 states, 2438 states have (on average 1.8314191960623463) internal successors, (4465), 2441 states have internal predecessors, (4465), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2023-11-24 21:39:03,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 4534 transitions. [2023-11-24 21:39:03,186 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 4534 transitions. Word has length 91 [2023-11-24 21:39:03,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:39:03,187 INFO L495 AbstractCegarLoop]: Abstraction has 2486 states and 4534 transitions. [2023-11-24 21:39:03,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2023-11-24 21:39:03,188 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 4534 transitions. [2023-11-24 21:39:03,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-24 21:39:03,196 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:39:03,196 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] [2023-11-24 21:39:03,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:39:03,197 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:39:03,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:39:03,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1610759172, now seen corresponding path program 1 times [2023-11-24 21:39:03,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:39:03,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949519175] [2023-11-24 21:39:03,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:39:03,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:39:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:03,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:39:03,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:03,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-24 21:39:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:03,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-24 21:39:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:03,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-24 21:39:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:03,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-24 21:39:03,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:03,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:39:03,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:39:03,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949519175] [2023-11-24 21:39:03,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949519175] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:39:03,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:39:03,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:39:03,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391360427] [2023-11-24 21:39:03,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:39:03,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:39:03,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:39:03,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:39:03,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:39:03,577 INFO L87 Difference]: Start difference. First operand 2486 states and 4534 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-11-24 21:39:06,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:39:06,181 INFO L93 Difference]: Finished difference Result 3204 states and 5694 transitions. [2023-11-24 21:39:06,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 21:39:06,182 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2023-11-24 21:39:06,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:39:06,201 INFO L225 Difference]: With dead ends: 3204 [2023-11-24 21:39:06,201 INFO L226 Difference]: Without dead ends: 2850 [2023-11-24 21:39:06,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-24 21:39:06,205 INFO L413 NwaCegarLoop]: 4210 mSDtfsCounter, 4688 mSDsluCounter, 16626 mSDsCounter, 0 mSdLazyCounter, 1822 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4700 SdHoareTripleChecker+Valid, 20836 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-24 21:39:06,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4700 Valid, 20836 Invalid, 1869 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 1822 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-24 21:39:06,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2850 states. [2023-11-24 21:39:06,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2850 to 2653. [2023-11-24 21:39:06,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2653 states, 2584 states have (on average 1.8165634674922602) internal successors, (4694), 2588 states have internal predecessors, (4694), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-11-24 21:39:06,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2653 states to 2653 states and 4793 transitions. [2023-11-24 21:39:06,317 INFO L78 Accepts]: Start accepts. Automaton has 2653 states and 4793 transitions. Word has length 91 [2023-11-24 21:39:06,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:39:06,318 INFO L495 AbstractCegarLoop]: Abstraction has 2653 states and 4793 transitions. [2023-11-24 21:39:06,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-11-24 21:39:06,318 INFO L276 IsEmpty]: Start isEmpty. Operand 2653 states and 4793 transitions. [2023-11-24 21:39:06,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-24 21:39:06,320 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:39:06,320 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] [2023-11-24 21:39:06,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:39:06,321 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:39:06,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:39:06,321 INFO L85 PathProgramCache]: Analyzing trace with hash 606871226, now seen corresponding path program 1 times [2023-11-24 21:39:06,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:39:06,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280787269] [2023-11-24 21:39:06,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:39:06,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:39:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:06,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:39:06,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:06,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-24 21:39:06,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:06,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-24 21:39:06,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:06,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-24 21:39:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:06,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-24 21:39:06,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:06,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:39:06,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:39:06,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280787269] [2023-11-24 21:39:06,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280787269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:39:06,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:39:06,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:39:06,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117471785] [2023-11-24 21:39:06,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:39:06,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:39:06,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:39:06,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:39:06,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:39:06,598 INFO L87 Difference]: Start difference. First operand 2653 states and 4793 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-11-24 21:39:07,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:39:07,702 INFO L93 Difference]: Finished difference Result 3375 states and 5967 transitions. [2023-11-24 21:39:07,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:39:07,703 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2023-11-24 21:39:07,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:39:07,721 INFO L225 Difference]: With dead ends: 3375 [2023-11-24 21:39:07,722 INFO L226 Difference]: Without dead ends: 2854 [2023-11-24 21:39:07,727 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 [2023-11-24 21:39:07,735 INFO L413 NwaCegarLoop]: 4090 mSDtfsCounter, 4567 mSDsluCounter, 12183 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4580 SdHoareTripleChecker+Valid, 16273 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 21:39:07,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4580 Valid, 16273 Invalid, 894 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-24 21:39:07,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2023-11-24 21:39:07,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 2653. [2023-11-24 21:39:07,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2653 states, 2584 states have (on average 1.8154024767801857) internal successors, (4691), 2588 states have internal predecessors, (4691), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-11-24 21:39:07,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2653 states to 2653 states and 4790 transitions. [2023-11-24 21:39:07,856 INFO L78 Accepts]: Start accepts. Automaton has 2653 states and 4790 transitions. Word has length 91 [2023-11-24 21:39:07,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:39:07,858 INFO L495 AbstractCegarLoop]: Abstraction has 2653 states and 4790 transitions. [2023-11-24 21:39:07,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-11-24 21:39:07,858 INFO L276 IsEmpty]: Start isEmpty. Operand 2653 states and 4790 transitions. [2023-11-24 21:39:07,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-24 21:39:07,860 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:39:07,860 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] [2023-11-24 21:39:07,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:39:07,861 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:39:07,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:39:07,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1494094072, now seen corresponding path program 1 times [2023-11-24 21:39:07,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:39:07,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905090187] [2023-11-24 21:39:07,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:39:07,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:39:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:07,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:39:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:07,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-24 21:39:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:08,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-24 21:39:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:08,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-24 21:39:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:08,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-24 21:39:08,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:08,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:39:08,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:39:08,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905090187] [2023-11-24 21:39:08,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905090187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:39:08,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:39:08,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:39:08,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85148351] [2023-11-24 21:39:08,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:39:08,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:39:08,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:39:08,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:39:08,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:39:08,057 INFO L87 Difference]: Start difference. First operand 2653 states and 4790 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-11-24 21:39:09,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:39:09,394 INFO L93 Difference]: Finished difference Result 3371 states and 5950 transitions. [2023-11-24 21:39:09,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:39:09,394 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2023-11-24 21:39:09,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:39:09,412 INFO L225 Difference]: With dead ends: 3371 [2023-11-24 21:39:09,413 INFO L226 Difference]: Without dead ends: 2850 [2023-11-24 21:39:09,418 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 [2023-11-24 21:39:09,419 INFO L413 NwaCegarLoop]: 4090 mSDtfsCounter, 4490 mSDsluCounter, 16226 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4503 SdHoareTripleChecker+Valid, 20316 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-24 21:39:09,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4503 Valid, 20316 Invalid, 955 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [51 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-24 21:39:09,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2850 states. [2023-11-24 21:39:09,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2850 to 2653. [2023-11-24 21:39:09,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2653 states, 2584 states have (on average 1.8142414860681115) internal successors, (4688), 2588 states have internal predecessors, (4688), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-11-24 21:39:09,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2653 states to 2653 states and 4787 transitions. [2023-11-24 21:39:09,550 INFO L78 Accepts]: Start accepts. Automaton has 2653 states and 4787 transitions. Word has length 91 [2023-11-24 21:39:09,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:39:09,550 INFO L495 AbstractCegarLoop]: Abstraction has 2653 states and 4787 transitions. [2023-11-24 21:39:09,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-11-24 21:39:09,551 INFO L276 IsEmpty]: Start isEmpty. Operand 2653 states and 4787 transitions. [2023-11-24 21:39:09,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-24 21:39:09,552 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:39:09,553 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] [2023-11-24 21:39:09,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:39:09,553 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:39:09,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:39:09,554 INFO L85 PathProgramCache]: Analyzing trace with hash -416948486, now seen corresponding path program 1 times [2023-11-24 21:39:09,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:39:09,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216079837] [2023-11-24 21:39:09,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:39:09,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:39:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:09,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:39:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:09,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-24 21:39:09,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:09,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-24 21:39:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:09,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-24 21:39:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:09,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-24 21:39:09,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:09,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:39:09,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:39:09,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216079837] [2023-11-24 21:39:09,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216079837] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:39:09,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:39:09,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:39:09,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970693416] [2023-11-24 21:39:09,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:39:09,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:39:09,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:39:09,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:39:09,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:39:09,773 INFO L87 Difference]: Start difference. First operand 2653 states and 4787 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-11-24 21:39:11,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:39:11,003 INFO L93 Difference]: Finished difference Result 3367 states and 5933 transitions. [2023-11-24 21:39:11,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:39:11,004 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2023-11-24 21:39:11,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:39:11,021 INFO L225 Difference]: With dead ends: 3367 [2023-11-24 21:39:11,021 INFO L226 Difference]: Without dead ends: 2846 [2023-11-24 21:39:11,024 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 [2023-11-24 21:39:11,025 INFO L413 NwaCegarLoop]: 4090 mSDtfsCounter, 4488 mSDsluCounter, 16226 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4501 SdHoareTripleChecker+Valid, 20316 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-24 21:39:11,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4501 Valid, 20316 Invalid, 939 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [51 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-24 21:39:11,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2023-11-24 21:39:11,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 2653. [2023-11-24 21:39:11,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2653 states, 2584 states have (on average 1.813080495356037) internal successors, (4685), 2588 states have internal predecessors, (4685), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-11-24 21:39:11,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2653 states to 2653 states and 4784 transitions. [2023-11-24 21:39:11,118 INFO L78 Accepts]: Start accepts. Automaton has 2653 states and 4784 transitions. Word has length 91 [2023-11-24 21:39:11,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:39:11,119 INFO L495 AbstractCegarLoop]: Abstraction has 2653 states and 4784 transitions. [2023-11-24 21:39:11,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-11-24 21:39:11,119 INFO L276 IsEmpty]: Start isEmpty. Operand 2653 states and 4784 transitions. [2023-11-24 21:39:11,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-24 21:39:11,121 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:39:11,121 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] [2023-11-24 21:39:11,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:39:11,122 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:39:11,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:39:11,122 INFO L85 PathProgramCache]: Analyzing trace with hash -340047688, now seen corresponding path program 1 times [2023-11-24 21:39:11,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:39:11,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619280261] [2023-11-24 21:39:11,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:39:11,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:39:11,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:11,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:39:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:11,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-24 21:39:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:11,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-24 21:39:11,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:11,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-24 21:39:11,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:11,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-24 21:39:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:11,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:39:11,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:39:11,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619280261] [2023-11-24 21:39:11,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619280261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:39:11,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:39:11,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:39:11,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202000033] [2023-11-24 21:39:11,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:39:11,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:39:11,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:39:11,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:39:11,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:39:11,338 INFO L87 Difference]: Start difference. First operand 2653 states and 4784 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-11-24 21:39:13,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:39:13,682 INFO L93 Difference]: Finished difference Result 3949 states and 6833 transitions. [2023-11-24 21:39:13,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-24 21:39:13,683 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2023-11-24 21:39:13,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:39:13,704 INFO L225 Difference]: With dead ends: 3949 [2023-11-24 21:39:13,705 INFO L226 Difference]: Without dead ends: 3428 [2023-11-24 21:39:13,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-24 21:39:13,708 INFO L413 NwaCegarLoop]: 4114 mSDtfsCounter, 4898 mSDsluCounter, 16369 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4916 SdHoareTripleChecker+Valid, 20483 SdHoareTripleChecker+Invalid, 1522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-24 21:39:13,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4916 Valid, 20483 Invalid, 1522 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [74 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-24 21:39:13,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3428 states. [2023-11-24 21:39:13,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3428 to 2996. [2023-11-24 21:39:13,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2996 states, 2887 states have (on average 1.7852441981295462) internal successors, (5154), 2893 states have internal predecessors, (5154), 73 states have call successors, (73), 30 states have call predecessors, (73), 34 states have return successors, (86), 76 states have call predecessors, (86), 73 states have call successors, (86) [2023-11-24 21:39:13,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2996 states to 2996 states and 5313 transitions. [2023-11-24 21:39:13,827 INFO L78 Accepts]: Start accepts. Automaton has 2996 states and 5313 transitions. Word has length 91 [2023-11-24 21:39:13,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:39:13,828 INFO L495 AbstractCegarLoop]: Abstraction has 2996 states and 5313 transitions. [2023-11-24 21:39:13,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-11-24 21:39:13,828 INFO L276 IsEmpty]: Start isEmpty. Operand 2996 states and 5313 transitions. [2023-11-24 21:39:13,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-24 21:39:13,830 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:39:13,831 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] [2023-11-24 21:39:13,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 21:39:13,831 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:39:13,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:39:13,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1307398342, now seen corresponding path program 1 times [2023-11-24 21:39:13,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:39:13,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187269571] [2023-11-24 21:39:13,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:39:13,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:39:13,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:13,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:39:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:13,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-24 21:39:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:13,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-24 21:39:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:14,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-24 21:39:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:14,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-24 21:39:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:14,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:39:14,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:39:14,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187269571] [2023-11-24 21:39:14,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187269571] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:39:14,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:39:14,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:39:14,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958680818] [2023-11-24 21:39:14,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:39:14,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:39:14,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:39:14,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:39:14,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:39:14,024 INFO L87 Difference]: Start difference. First operand 2996 states and 5313 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-11-24 21:39:16,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:39:16,542 INFO L93 Difference]: Finished difference Result 5232 states and 8832 transitions. [2023-11-24 21:39:16,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-24 21:39:16,543 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2023-11-24 21:39:16,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:39:16,571 INFO L225 Difference]: With dead ends: 5232 [2023-11-24 21:39:16,571 INFO L226 Difference]: Without dead ends: 4368 [2023-11-24 21:39:16,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-24 21:39:16,577 INFO L413 NwaCegarLoop]: 4205 mSDtfsCounter, 4697 mSDsluCounter, 16618 mSDsCounter, 0 mSdLazyCounter, 1987 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4708 SdHoareTripleChecker+Valid, 20823 SdHoareTripleChecker+Invalid, 2038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-24 21:39:16,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4708 Valid, 20823 Invalid, 2038 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [51 Valid, 1987 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-24 21:39:16,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4368 states. [2023-11-24 21:39:16,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4368 to 3653. [2023-11-24 21:39:16,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3653 states, 3466 states have (on average 1.7443739180611657) internal successors, (6046), 3476 states have internal predecessors, (6046), 123 states have call successors, (123), 54 states have call predecessors, (123), 62 states have return successors, (158), 130 states have call predecessors, (158), 123 states have call successors, (158) [2023-11-24 21:39:16,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3653 states to 3653 states and 6327 transitions. [2023-11-24 21:39:16,778 INFO L78 Accepts]: Start accepts. Automaton has 3653 states and 6327 transitions. Word has length 91 [2023-11-24 21:39:16,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:39:16,781 INFO L495 AbstractCegarLoop]: Abstraction has 3653 states and 6327 transitions. [2023-11-24 21:39:16,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-11-24 21:39:16,782 INFO L276 IsEmpty]: Start isEmpty. Operand 3653 states and 6327 transitions. [2023-11-24 21:39:16,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-24 21:39:16,785 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:39:16,785 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] [2023-11-24 21:39:16,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 21:39:16,786 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:39:16,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:39:16,787 INFO L85 PathProgramCache]: Analyzing trace with hash 601059448, now seen corresponding path program 1 times [2023-11-24 21:39:16,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:39:16,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685277217] [2023-11-24 21:39:16,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:39:16,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:39:16,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:16,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:39:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:16,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-24 21:39:16,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:16,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-24 21:39:16,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:17,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-24 21:39:17,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:17,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-24 21:39:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:17,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:39:17,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:39:17,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685277217] [2023-11-24 21:39:17,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685277217] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:39:17,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:39:17,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:39:17,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851069926] [2023-11-24 21:39:17,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:39:17,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:39:17,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:39:17,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:39:17,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:39:17,018 INFO L87 Difference]: Start difference. First operand 3653 states and 6327 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-11-24 21:39:19,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:39:19,583 INFO L93 Difference]: Finished difference Result 7675 states and 12640 transitions. [2023-11-24 21:39:19,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-24 21:39:19,584 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2023-11-24 21:39:19,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:39:19,620 INFO L225 Difference]: With dead ends: 7675 [2023-11-24 21:39:19,621 INFO L226 Difference]: Without dead ends: 6154 [2023-11-24 21:39:19,630 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 [2023-11-24 21:39:19,631 INFO L413 NwaCegarLoop]: 4206 mSDtfsCounter, 4778 mSDsluCounter, 16621 mSDsCounter, 0 mSdLazyCounter, 1690 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4796 SdHoareTripleChecker+Valid, 20827 SdHoareTripleChecker+Invalid, 1742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-24 21:39:19,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4796 Valid, 20827 Invalid, 1742 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 1690 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-24 21:39:19,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6154 states. [2023-11-24 21:39:19,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6154 to 4986. [2023-11-24 21:39:19,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4986 states, 4647 states have (on average 1.6931353561437485) internal successors, (7868), 4665 states have internal predecessors, (7868), 219 states have call successors, (219), 102 states have call predecessors, (219), 118 states have return successors, (316), 234 states have call predecessors, (316), 219 states have call successors, (316) [2023-11-24 21:39:19,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4986 states to 4986 states and 8403 transitions. [2023-11-24 21:39:19,969 INFO L78 Accepts]: Start accepts. Automaton has 4986 states and 8403 transitions. Word has length 91 [2023-11-24 21:39:19,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:39:19,969 INFO L495 AbstractCegarLoop]: Abstraction has 4986 states and 8403 transitions. [2023-11-24 21:39:19,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-11-24 21:39:19,970 INFO L276 IsEmpty]: Start isEmpty. Operand 4986 states and 8403 transitions. [2023-11-24 21:39:19,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-24 21:39:19,974 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:39:19,975 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] [2023-11-24 21:39:19,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 21:39:19,975 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:39:19,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:39:19,976 INFO L85 PathProgramCache]: Analyzing trace with hash 108433274, now seen corresponding path program 1 times [2023-11-24 21:39:19,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:39:19,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53757638] [2023-11-24 21:39:19,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:39:19,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:39:20,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:20,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:39:20,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:20,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-24 21:39:20,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:20,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-24 21:39:20,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:20,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-24 21:39:20,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:20,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-24 21:39:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:20,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:39:20,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:39:20,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53757638] [2023-11-24 21:39:20,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53757638] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:39:20,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:39:20,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:39:20,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673271943] [2023-11-24 21:39:20,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:39:20,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:39:20,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:39:20,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:39:20,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:39:20,196 INFO L87 Difference]: Start difference. First operand 4986 states and 8403 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-11-24 21:39:22,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:39:22,538 INFO L93 Difference]: Finished difference Result 12494 states and 20210 transitions. [2023-11-24 21:39:22,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-24 21:39:22,539 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2023-11-24 21:39:22,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:39:22,644 INFO L225 Difference]: With dead ends: 12494 [2023-11-24 21:39:22,645 INFO L226 Difference]: Without dead ends: 9640 [2023-11-24 21:39:22,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-24 21:39:22,655 INFO L413 NwaCegarLoop]: 4206 mSDtfsCounter, 4748 mSDsluCounter, 16621 mSDsCounter, 0 mSdLazyCounter, 1672 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4766 SdHoareTripleChecker+Valid, 20827 SdHoareTripleChecker+Invalid, 1724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-24 21:39:22,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4766 Valid, 20827 Invalid, 1724 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 1672 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-24 21:39:22,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9640 states. [2023-11-24 21:39:23,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9640 to 7651. [2023-11-24 21:39:23,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7651 states, 7016 states have (on average 1.6428164196123147) internal successors, (11526), 7050 states have internal predecessors, (11526), 403 states have call successors, (403), 198 states have call predecessors, (403), 230 states have return successors, (678), 434 states have call predecessors, (678), 403 states have call successors, (678) [2023-11-24 21:39:23,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7651 states to 7651 states and 12607 transitions. [2023-11-24 21:39:23,082 INFO L78 Accepts]: Start accepts. Automaton has 7651 states and 12607 transitions. Word has length 91 [2023-11-24 21:39:23,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:39:23,083 INFO L495 AbstractCegarLoop]: Abstraction has 7651 states and 12607 transitions. [2023-11-24 21:39:23,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2023-11-24 21:39:23,084 INFO L276 IsEmpty]: Start isEmpty. Operand 7651 states and 12607 transitions. [2023-11-24 21:39:23,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-24 21:39:23,092 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:39:23,092 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] [2023-11-24 21:39:23,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 21:39:23,092 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:39:23,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:39:23,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1062373432, now seen corresponding path program 1 times [2023-11-24 21:39:23,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:39:23,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215263044] [2023-11-24 21:39:23,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:39:23,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:39:23,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:23,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:39:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:39:23,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-24 21:39:23,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat