./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.10.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d187dc8d-19fb-4f79-8e57-93b7a23264b4/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d187dc8d-19fb-4f79-8e57-93b7a23264b4/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_d187dc8d-19fb-4f79-8e57-93b7a23264b4/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d187dc8d-19fb-4f79-8e57-93b7a23264b4/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.10.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d187dc8d-19fb-4f79-8e57-93b7a23264b4/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_d187dc8d-19fb-4f79-8e57-93b7a23264b4/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 fe770310c82cf9cfe74a9cf613e502cabffaf8c78b339172b16bd6473cdffdfc --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:51:02,579 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:51:02,727 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d187dc8d-19fb-4f79-8e57-93b7a23264b4/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 21:51:02,733 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:51:02,734 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:51:02,778 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:51:02,778 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:51:02,779 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:51:02,780 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:51:02,785 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:51:02,786 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:51:02,786 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:51:02,787 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:51:02,789 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:51:02,789 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:51:02,789 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:51:02,790 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 21:51:02,790 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:51:02,791 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:51:02,791 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:51:02,791 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:51:02,792 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 21:51:02,792 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:51:02,793 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 21:51:02,793 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:51:02,794 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 21:51:02,794 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:51:02,795 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:51:02,795 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:51:02,796 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:51:02,797 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:51:02,797 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:51:02,798 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:51:02,798 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:51:02,798 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 21:51:02,798 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:51:02,799 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:51:02,799 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:51:02,799 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:51:02,799 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 21:51:02,799 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:51:02,800 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:51:02,800 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_d187dc8d-19fb-4f79-8e57-93b7a23264b4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d187dc8d-19fb-4f79-8e57-93b7a23264b4/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe770310c82cf9cfe74a9cf613e502cabffaf8c78b339172b16bd6473cdffdfc [2023-11-24 21:51:03,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:51:03,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:51:03,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:51:03,201 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:51:03,202 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:51:03,203 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d187dc8d-19fb-4f79-8e57-93b7a23264b4/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.10.cil-1.c [2023-11-24 21:51:06,211 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:51:07,004 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:51:07,006 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d187dc8d-19fb-4f79-8e57-93b7a23264b4/sv-benchmarks/c/combinations/Problem05_label42+token_ring.10.cil-1.c [2023-11-24 21:51:07,057 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d187dc8d-19fb-4f79-8e57-93b7a23264b4/bin/uautomizer-verify-NlZe1sFDwI/data/bf4f410a6/2ce82318aed944388a3c88c281c89ad4/FLAGb9c38f65f [2023-11-24 21:51:07,074 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d187dc8d-19fb-4f79-8e57-93b7a23264b4/bin/uautomizer-verify-NlZe1sFDwI/data/bf4f410a6/2ce82318aed944388a3c88c281c89ad4 [2023-11-24 21:51:07,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:51:07,081 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:51:07,084 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:51:07,084 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:51:07,090 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:51:07,091 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:51:07" (1/1) ... [2023-11-24 21:51:07,092 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10866af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:07, skipping insertion in model container [2023-11-24 21:51:07,092 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:51:07" (1/1) ... [2023-11-24 21:51:07,348 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:51:09,873 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_d187dc8d-19fb-4f79-8e57-93b7a23264b4/sv-benchmarks/c/combinations/Problem05_label42+token_ring.10.cil-1.c[378560,378573] [2023-11-24 21:51:09,909 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_d187dc8d-19fb-4f79-8e57-93b7a23264b4/sv-benchmarks/c/combinations/Problem05_label42+token_ring.10.cil-1.c[383339,383352] [2023-11-24 21:51:10,201 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:51:10,220 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:51:11,484 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_d187dc8d-19fb-4f79-8e57-93b7a23264b4/sv-benchmarks/c/combinations/Problem05_label42+token_ring.10.cil-1.c[378560,378573] [2023-11-24 21:51:11,495 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_d187dc8d-19fb-4f79-8e57-93b7a23264b4/sv-benchmarks/c/combinations/Problem05_label42+token_ring.10.cil-1.c[383339,383352] [2023-11-24 21:51:11,550 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:51:11,640 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:51:11,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:11 WrapperNode [2023-11-24 21:51:11,641 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:51:11,643 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:51:11,643 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:51:11,643 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:51:11,651 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:11" (1/1) ... [2023-11-24 21:51:11,748 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:11" (1/1) ... [2023-11-24 21:51:12,246 INFO L138 Inliner]: procedures = 64, calls = 72, calls flagged for inlining = 41, calls inlined = 41, statements flattened = 13114 [2023-11-24 21:51:12,247 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:51:12,248 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:51:12,248 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:51:12,248 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:51:12,261 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:11" (1/1) ... [2023-11-24 21:51:12,261 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:11" (1/1) ... [2023-11-24 21:51:12,301 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:11" (1/1) ... [2023-11-24 21:51:12,445 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 21:51:12,445 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:11" (1/1) ... [2023-11-24 21:51:12,445 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:11" (1/1) ... [2023-11-24 21:51:12,738 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:11" (1/1) ... [2023-11-24 21:51:12,777 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:11" (1/1) ... [2023-11-24 21:51:12,806 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:11" (1/1) ... [2023-11-24 21:51:12,834 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:11" (1/1) ... [2023-11-24 21:51:12,897 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:51:12,898 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:51:12,898 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:51:12,898 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:51:12,901 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:11" (1/1) ... [2023-11-24 21:51:12,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:51:12,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d187dc8d-19fb-4f79-8e57-93b7a23264b4/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:51:12,937 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d187dc8d-19fb-4f79-8e57-93b7a23264b4/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:51:12,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d187dc8d-19fb-4f79-8e57-93b7a23264b4/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:51:12,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:51:12,975 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-24 21:51:12,975 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-24 21:51:12,975 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-24 21:51:12,975 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-24 21:51:12,975 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-24 21:51:12,975 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-24 21:51:12,975 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-11-24 21:51:12,976 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-11-24 21:51:12,976 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-24 21:51:12,976 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-24 21:51:12,976 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-24 21:51:12,976 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-24 21:51:12,976 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-24 21:51:12,976 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-24 21:51:12,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:51:12,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:51:12,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:51:13,206 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:51:13,209 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:51:23,694 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:51:23,831 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:51:23,832 INFO L309 CfgBuilder]: Removed 14 assume(true) statements. [2023-11-24 21:51:23,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:51:23 BoogieIcfgContainer [2023-11-24 21:51:23,834 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:51:23,836 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:51:23,836 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:51:23,840 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:51:23,841 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:51:07" (1/3) ... [2023-11-24 21:51:23,842 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@560a3e16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:51:23, skipping insertion in model container [2023-11-24 21:51:23,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:11" (2/3) ... [2023-11-24 21:51:23,842 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@560a3e16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:51:23, skipping insertion in model container [2023-11-24 21:51:23,843 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:51:23" (3/3) ... [2023-11-24 21:51:23,844 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.10.cil-1.c [2023-11-24 21:51:23,866 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:51:23,866 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-24 21:51:23,969 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:51:23,976 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;@1775263f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:51:23,976 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-24 21:51:23,991 INFO L276 IsEmpty]: Start isEmpty. Operand has 2433 states, 2397 states have (on average 1.8777638715060492) internal successors, (4501), 2402 states have internal predecessors, (4501), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-24 21:51:24,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-24 21:51:24,029 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:51:24,031 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:51:24,031 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:51:24,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:51:24,038 INFO L85 PathProgramCache]: Analyzing trace with hash -410914149, now seen corresponding path program 1 times [2023-11-24 21:51:24,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:51:24,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889098240] [2023-11-24 21:51:24,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:51:24,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:51:24,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:24,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:51:24,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:24,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-24 21:51:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:24,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-24 21:51:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:24,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-24 21:51:24,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:24,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-24 21:51:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:24,785 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 21:51:24,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:51:24,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889098240] [2023-11-24 21:51:24,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889098240] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:51:24,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:51:24,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:51:24,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431974425] [2023-11-24 21:51:24,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:51:24,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:51:24,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:51:24,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:51:24,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:51:24,836 INFO L87 Difference]: Start difference. First operand has 2433 states, 2397 states have (on average 1.8777638715060492) internal successors, (4501), 2402 states have internal predecessors, (4501), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:51:27,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:51:27,271 INFO L93 Difference]: Finished difference Result 4967 states and 9286 transitions. [2023-11-24 21:51:27,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:51:27,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-11-24 21:51:27,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:51:27,307 INFO L225 Difference]: With dead ends: 4967 [2023-11-24 21:51:27,307 INFO L226 Difference]: Without dead ends: 2538 [2023-11-24 21:51:27,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-24 21:51:27,322 INFO L413 NwaCegarLoop]: 4230 mSDtfsCounter, 851 mSDsluCounter, 12178 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 16408 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-24 21:51:27,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 16408 Invalid, 968 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-24 21:51:27,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2538 states. [2023-11-24 21:51:27,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2538 to 2428. [2023-11-24 21:51:27,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2428 states, 2394 states have (on average 1.840016708437761) internal successors, (4405), 2397 states have internal predecessors, (4405), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-24 21:51:27,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2428 states to 2428 states and 4455 transitions. [2023-11-24 21:51:27,481 INFO L78 Accepts]: Start accepts. Automaton has 2428 states and 4455 transitions. Word has length 142 [2023-11-24 21:51:27,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:51:27,481 INFO L495 AbstractCegarLoop]: Abstraction has 2428 states and 4455 transitions. [2023-11-24 21:51:27,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:51:27,482 INFO L276 IsEmpty]: Start isEmpty. Operand 2428 states and 4455 transitions. [2023-11-24 21:51:27,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-24 21:51:27,485 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:51:27,486 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:51:27,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:51:27,486 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:51:27,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:51:27,487 INFO L85 PathProgramCache]: Analyzing trace with hash 133958425, now seen corresponding path program 1 times [2023-11-24 21:51:27,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:51:27,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909852524] [2023-11-24 21:51:27,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:51:27,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:51:27,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:27,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:51:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:27,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-24 21:51:27,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:28,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-24 21:51:28,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:28,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-24 21:51:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:28,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-24 21:51:28,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:28,129 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 21:51:28,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:51:28,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909852524] [2023-11-24 21:51:28,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909852524] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:51:28,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:51:28,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:51:28,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176211966] [2023-11-24 21:51:28,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:51:28,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:51:28,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:51:28,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:51:28,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:51:28,135 INFO L87 Difference]: Start difference. First operand 2428 states and 4455 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:51:33,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:51:33,509 INFO L93 Difference]: Finished difference Result 3266 states and 5862 transitions. [2023-11-24 21:51:33,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 21:51:33,512 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-11-24 21:51:33,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:51:33,534 INFO L225 Difference]: With dead ends: 3266 [2023-11-24 21:51:33,534 INFO L226 Difference]: Without dead ends: 2975 [2023-11-24 21:51:33,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-24 21:51:33,541 INFO L413 NwaCegarLoop]: 4383 mSDtfsCounter, 5177 mSDsluCounter, 17236 mSDsCounter, 0 mSdLazyCounter, 3307 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5194 SdHoareTripleChecker+Valid, 21619 SdHoareTripleChecker+Invalid, 3373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:51:33,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5194 Valid, 21619 Invalid, 3373 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 3307 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-24 21:51:33,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2023-11-24 21:51:33,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 2736. [2023-11-24 21:51:33,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2736 states, 2673 states have (on average 1.8204264870931537) internal successors, (4866), 2678 states have internal predecessors, (4866), 47 states have call successors, (47), 13 states have call predecessors, (47), 14 states have return successors, (52), 46 states have call predecessors, (52), 45 states have call successors, (52) [2023-11-24 21:51:33,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 4965 transitions. [2023-11-24 21:51:33,703 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 4965 transitions. Word has length 142 [2023-11-24 21:51:33,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:51:33,703 INFO L495 AbstractCegarLoop]: Abstraction has 2736 states and 4965 transitions. [2023-11-24 21:51:33,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:51:33,704 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 4965 transitions. [2023-11-24 21:51:33,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-24 21:51:33,707 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:51:33,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:51:33,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:51:33,708 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:51:33,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:51:33,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1916450473, now seen corresponding path program 1 times [2023-11-24 21:51:33,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:51:33,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759528243] [2023-11-24 21:51:33,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:51:33,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:51:33,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:33,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:51:33,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:34,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-24 21:51:34,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:34,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-24 21:51:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:34,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-24 21:51:34,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:34,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-24 21:51:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:34,174 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 21:51:34,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:51:34,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759528243] [2023-11-24 21:51:34,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759528243] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:51:34,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:51:34,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:51:34,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422351247] [2023-11-24 21:51:34,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:51:34,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:51:34,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:51:34,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:51:34,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:51:34,179 INFO L87 Difference]: Start difference. First operand 2736 states and 4965 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:51:39,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:51:39,006 INFO L93 Difference]: Finished difference Result 4324 states and 7612 transitions. [2023-11-24 21:51:39,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 21:51:39,007 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-11-24 21:51:39,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:51:39,033 INFO L225 Difference]: With dead ends: 4324 [2023-11-24 21:51:39,033 INFO L226 Difference]: Without dead ends: 3727 [2023-11-24 21:51:39,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-24 21:51:39,038 INFO L413 NwaCegarLoop]: 4332 mSDtfsCounter, 5218 mSDsluCounter, 17172 mSDsCounter, 0 mSdLazyCounter, 2999 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5235 SdHoareTripleChecker+Valid, 21504 SdHoareTripleChecker+Invalid, 3073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-24 21:51:39,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5235 Valid, 21504 Invalid, 3073 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [74 Valid, 2999 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-24 21:51:39,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3727 states. [2023-11-24 21:51:39,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3727 to 3300. [2023-11-24 21:51:39,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3300 states, 3185 states have (on average 1.7886970172684458) internal successors, (5697), 3192 states have internal predecessors, (5697), 85 states have call successors, (85), 25 states have call predecessors, (85), 28 states have return successors, (100), 86 states have call predecessors, (100), 83 states have call successors, (100) [2023-11-24 21:51:39,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3300 states to 3300 states and 5882 transitions. [2023-11-24 21:51:39,201 INFO L78 Accepts]: Start accepts. Automaton has 3300 states and 5882 transitions. Word has length 142 [2023-11-24 21:51:39,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:51:39,202 INFO L495 AbstractCegarLoop]: Abstraction has 3300 states and 5882 transitions. [2023-11-24 21:51:39,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:51:39,202 INFO L276 IsEmpty]: Start isEmpty. Operand 3300 states and 5882 transitions. [2023-11-24 21:51:39,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-24 21:51:39,208 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:51:39,208 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:51:39,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:51:39,209 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:51:39,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:51:39,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1428403367, now seen corresponding path program 1 times [2023-11-24 21:51:39,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:51:39,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606011115] [2023-11-24 21:51:39,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:51:39,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:51:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:39,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:51:39,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:39,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-24 21:51:39,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:39,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-24 21:51:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:39,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-24 21:51:39,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:39,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-24 21:51:39,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:39,611 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 21:51:39,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:51:39,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606011115] [2023-11-24 21:51:39,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606011115] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:51:39,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:51:39,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:51:39,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348379954] [2023-11-24 21:51:39,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:51:39,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:51:39,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:51:39,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:51:39,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:51:39,619 INFO L87 Difference]: Start difference. First operand 3300 states and 5882 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:51:42,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:51:42,178 INFO L93 Difference]: Finished difference Result 4901 states and 8568 transitions. [2023-11-24 21:51:42,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:51:42,179 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-11-24 21:51:42,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:51:42,203 INFO L225 Difference]: With dead ends: 4901 [2023-11-24 21:51:42,203 INFO L226 Difference]: Without dead ends: 3738 [2023-11-24 21:51:42,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:51:42,210 INFO L413 NwaCegarLoop]: 4186 mSDtfsCounter, 4885 mSDsluCounter, 16532 mSDsCounter, 0 mSdLazyCounter, 1640 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4903 SdHoareTripleChecker+Valid, 20718 SdHoareTripleChecker+Invalid, 1705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:51:42,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4903 Valid, 20718 Invalid, 1705 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 1640 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-24 21:51:42,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3738 states. [2023-11-24 21:51:42,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3738 to 3300. [2023-11-24 21:51:42,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3300 states, 3185 states have (on average 1.78712715855573) internal successors, (5692), 3192 states have internal predecessors, (5692), 85 states have call successors, (85), 25 states have call predecessors, (85), 28 states have return successors, (100), 86 states have call predecessors, (100), 83 states have call successors, (100) [2023-11-24 21:51:42,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3300 states to 3300 states and 5877 transitions. [2023-11-24 21:51:42,451 INFO L78 Accepts]: Start accepts. Automaton has 3300 states and 5877 transitions. Word has length 142 [2023-11-24 21:51:42,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:51:42,452 INFO L495 AbstractCegarLoop]: Abstraction has 3300 states and 5877 transitions. [2023-11-24 21:51:42,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:51:42,452 INFO L276 IsEmpty]: Start isEmpty. Operand 3300 states and 5877 transitions. [2023-11-24 21:51:42,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-24 21:51:42,455 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:51:42,456 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:51:42,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:51:42,456 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:51:42,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:51:42,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1773928727, now seen corresponding path program 1 times [2023-11-24 21:51:42,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:51:42,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91408014] [2023-11-24 21:51:42,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:51:42,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:51:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:42,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:51:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:42,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-24 21:51:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:42,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-24 21:51:42,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:42,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-24 21:51:42,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:42,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-24 21:51:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:42,748 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 21:51:42,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:51:42,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91408014] [2023-11-24 21:51:42,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91408014] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:51:42,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:51:42,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:51:42,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418862557] [2023-11-24 21:51:42,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:51:42,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:51:42,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:51:42,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:51:42,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:51:42,754 INFO L87 Difference]: Start difference. First operand 3300 states and 5877 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:51:45,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:51:45,192 INFO L93 Difference]: Finished difference Result 4897 states and 8547 transitions. [2023-11-24 21:51:45,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:51:45,193 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-11-24 21:51:45,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:51:45,218 INFO L225 Difference]: With dead ends: 4897 [2023-11-24 21:51:45,218 INFO L226 Difference]: Without dead ends: 3734 [2023-11-24 21:51:45,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:51:45,225 INFO L413 NwaCegarLoop]: 4186 mSDtfsCounter, 4883 mSDsluCounter, 16532 mSDsCounter, 0 mSdLazyCounter, 1624 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4901 SdHoareTripleChecker+Valid, 20718 SdHoareTripleChecker+Invalid, 1689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-24 21:51:45,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4901 Valid, 20718 Invalid, 1689 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 1624 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-24 21:51:45,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3734 states. [2023-11-24 21:51:45,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3734 to 3300. [2023-11-24 21:51:45,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3300 states, 3185 states have (on average 1.785557299843014) internal successors, (5687), 3192 states have internal predecessors, (5687), 85 states have call successors, (85), 25 states have call predecessors, (85), 28 states have return successors, (100), 86 states have call predecessors, (100), 83 states have call successors, (100) [2023-11-24 21:51:45,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3300 states to 3300 states and 5872 transitions. [2023-11-24 21:51:45,372 INFO L78 Accepts]: Start accepts. Automaton has 3300 states and 5872 transitions. Word has length 142 [2023-11-24 21:51:45,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:51:45,372 INFO L495 AbstractCegarLoop]: Abstraction has 3300 states and 5872 transitions. [2023-11-24 21:51:45,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:51:45,373 INFO L276 IsEmpty]: Start isEmpty. Operand 3300 states and 5872 transitions. [2023-11-24 21:51:45,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-24 21:51:45,376 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:51:45,377 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:51:45,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:51:45,377 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:51:45,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:51:45,378 INFO L85 PathProgramCache]: Analyzing trace with hash 491756441, now seen corresponding path program 1 times [2023-11-24 21:51:45,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:51:45,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724309189] [2023-11-24 21:51:45,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:51:45,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:51:45,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:45,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:51:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:45,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-24 21:51:45,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:45,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-24 21:51:45,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:45,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-24 21:51:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:45,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-24 21:51:45,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:45,700 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 21:51:45,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:51:45,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724309189] [2023-11-24 21:51:45,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724309189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:51:45,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:51:45,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:51:45,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323830453] [2023-11-24 21:51:45,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:51:45,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:51:45,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:51:45,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:51:45,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:51:45,705 INFO L87 Difference]: Start difference. First operand 3300 states and 5872 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:51:47,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:51:47,807 INFO L93 Difference]: Finished difference Result 4892 states and 8524 transitions. [2023-11-24 21:51:47,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:51:47,808 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-11-24 21:51:47,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:51:47,832 INFO L225 Difference]: With dead ends: 4892 [2023-11-24 21:51:47,833 INFO L226 Difference]: Without dead ends: 3729 [2023-11-24 21:51:47,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:51:47,840 INFO L413 NwaCegarLoop]: 4186 mSDtfsCounter, 5011 mSDsluCounter, 12425 mSDsCounter, 0 mSdLazyCounter, 1451 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5029 SdHoareTripleChecker+Valid, 16611 SdHoareTripleChecker+Invalid, 1542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-24 21:51:47,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5029 Valid, 16611 Invalid, 1542 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [91 Valid, 1451 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-24 21:51:47,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3729 states. [2023-11-24 21:51:47,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3729 to 3300. [2023-11-24 21:51:47,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3300 states, 3185 states have (on average 1.7839874411302983) internal successors, (5682), 3192 states have internal predecessors, (5682), 85 states have call successors, (85), 25 states have call predecessors, (85), 28 states have return successors, (100), 86 states have call predecessors, (100), 83 states have call successors, (100) [2023-11-24 21:51:47,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3300 states to 3300 states and 5867 transitions. [2023-11-24 21:51:47,985 INFO L78 Accepts]: Start accepts. Automaton has 3300 states and 5867 transitions. Word has length 142 [2023-11-24 21:51:47,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:51:47,986 INFO L495 AbstractCegarLoop]: Abstraction has 3300 states and 5867 transitions. [2023-11-24 21:51:47,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:51:47,986 INFO L276 IsEmpty]: Start isEmpty. Operand 3300 states and 5867 transitions. [2023-11-24 21:51:47,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-24 21:51:47,990 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:51:47,990 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:51:47,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:51:47,990 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:51:47,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:51:47,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1350719273, now seen corresponding path program 1 times [2023-11-24 21:51:47,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:51:47,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756241675] [2023-11-24 21:51:47,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:51:47,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:51:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:48,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:51:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:48,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-24 21:51:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:48,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-24 21:51:48,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:48,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-24 21:51:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:48,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-24 21:51:48,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:48,300 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 21:51:48,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:51:48,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756241675] [2023-11-24 21:51:48,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756241675] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:51:48,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:51:48,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:51:48,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543839259] [2023-11-24 21:51:48,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:51:48,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:51:48,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:51:48,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:51:48,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:51:48,304 INFO L87 Difference]: Start difference. First operand 3300 states and 5867 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)