./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label46.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555d410-31ba-401c-9ffe-4393d19b13de/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555d410-31ba-401c-9ffe-4393d19b13de/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555d410-31ba-401c-9ffe-4393d19b13de/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555d410-31ba-401c-9ffe-4393d19b13de/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label46.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555d410-31ba-401c-9ffe-4393d19b13de/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555d410-31ba-401c-9ffe-4393d19b13de/bin/uautomizer-verify-LYvppIcaGC --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 14408b329878540946fe7764dd35bdde7ddb2280d1dd9f9e09220bf70c4bb1b5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:24:25,785 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:24:25,886 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555d410-31ba-401c-9ffe-4393d19b13de/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 01:24:25,893 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:24:25,893 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:24:25,925 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:24:25,926 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:24:25,926 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:24:25,926 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:24:25,926 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:24:25,927 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:24:25,927 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:24:25,927 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:24:25,927 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:24:25,928 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:24:25,928 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:24:25,928 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:24:25,928 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:24:25,928 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:24:25,929 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:24:25,929 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:24:25,929 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:24:25,929 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:24:25,929 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:24:25,929 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:24:25,930 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:24:25,930 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:24:25,930 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:24:25,930 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:24:25,930 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:24:25,930 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:24:25,931 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:24:25,931 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:24:25,931 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:24:25,931 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:24:25,931 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:24:25,931 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:24:25,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:24:25,932 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:24:25,932 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:24:25,932 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:24:25,932 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:24:25,932 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:24:25,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:24:25,933 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:24:25,933 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:24:25,933 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:24:25,933 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:24:25,933 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_7555d410-31ba-401c-9ffe-4393d19b13de/bin/uautomizer-verify-LYvppIcaGC 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 -> 14408b329878540946fe7764dd35bdde7ddb2280d1dd9f9e09220bf70c4bb1b5 [2024-11-24 01:24:26,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:24:26,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:24:26,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:24:26,271 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:24:26,272 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:24:26,274 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555d410-31ba-401c-9ffe-4393d19b13de/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/eca-rers2012/Problem01_label46.c [2024-11-24 01:24:29,250 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555d410-31ba-401c-9ffe-4393d19b13de/bin/uautomizer-verify-LYvppIcaGC/data/c17cc2cc3/01a9d7238f974130b9369777e7d5f348/FLAG50cd3b8f0 [2024-11-24 01:24:29,602 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:24:29,603 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555d410-31ba-401c-9ffe-4393d19b13de/sv-benchmarks/c/eca-rers2012/Problem01_label46.c [2024-11-24 01:24:29,615 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555d410-31ba-401c-9ffe-4393d19b13de/bin/uautomizer-verify-LYvppIcaGC/data/c17cc2cc3/01a9d7238f974130b9369777e7d5f348/FLAG50cd3b8f0 [2024-11-24 01:24:29,846 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555d410-31ba-401c-9ffe-4393d19b13de/bin/uautomizer-verify-LYvppIcaGC/data/c17cc2cc3/01a9d7238f974130b9369777e7d5f348 [2024-11-24 01:24:29,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:24:29,850 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:24:29,851 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:24:29,851 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:24:29,857 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:24:29,858 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:24:29" (1/1) ... [2024-11-24 01:24:29,859 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18859ae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:24:29, skipping insertion in model container [2024-11-24 01:24:29,859 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:24:29" (1/1) ... [2024-11-24 01:24:29,903 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:24:30,233 WARN L250 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_7555d410-31ba-401c-9ffe-4393d19b13de/sv-benchmarks/c/eca-rers2012/Problem01_label46.c[19475,19488] [2024-11-24 01:24:30,277 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:24:30,292 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:24:30,393 WARN L250 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_7555d410-31ba-401c-9ffe-4393d19b13de/sv-benchmarks/c/eca-rers2012/Problem01_label46.c[19475,19488] [2024-11-24 01:24:30,403 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:24:30,421 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:24:30,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:24:30 WrapperNode [2024-11-24 01:24:30,424 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:24:30,425 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:24:30,425 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:24:30,425 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:24:30,432 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:24:30" (1/1) ... [2024-11-24 01:24:30,446 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:24:30" (1/1) ... [2024-11-24 01:24:30,493 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 657 [2024-11-24 01:24:30,496 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:24:30,497 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:24:30,497 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:24:30,497 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:24:30,505 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:24:30" (1/1) ... [2024-11-24 01:24:30,506 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:24:30" (1/1) ... [2024-11-24 01:24:30,510 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:24:30" (1/1) ... [2024-11-24 01:24:30,529 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]. [2024-11-24 01:24:30,529 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:24:30" (1/1) ... [2024-11-24 01:24:30,529 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:24:30" (1/1) ... [2024-11-24 01:24:30,548 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:24:30" (1/1) ... [2024-11-24 01:24:30,555 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:24:30" (1/1) ... [2024-11-24 01:24:30,570 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:24:30" (1/1) ... [2024-11-24 01:24:30,575 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:24:30" (1/1) ... [2024-11-24 01:24:30,581 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:24:30" (1/1) ... [2024-11-24 01:24:30,595 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:24:30,596 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:24:30,597 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:24:30,597 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:24:30,598 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:24:30" (1/1) ... [2024-11-24 01:24:30,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:24:30,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555d410-31ba-401c-9ffe-4393d19b13de/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:24:30,640 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555d410-31ba-401c-9ffe-4393d19b13de/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:24:30,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555d410-31ba-401c-9ffe-4393d19b13de/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:24:30,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:24:30,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:24:30,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:24:30,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:24:30,769 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:24:30,771 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:24:32,144 INFO L? ?]: Removed 75 outVars from TransFormulas that were not future-live. [2024-11-24 01:24:32,144 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:24:32,163 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:24:32,163 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 01:24:32,163 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:24:32 BoogieIcfgContainer [2024-11-24 01:24:32,166 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:24:32,169 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:24:32,169 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:24:32,174 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:24:32,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:24:29" (1/3) ... [2024-11-24 01:24:32,175 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@748e3fb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:24:32, skipping insertion in model container [2024-11-24 01:24:32,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:24:30" (2/3) ... [2024-11-24 01:24:32,175 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@748e3fb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:24:32, skipping insertion in model container [2024-11-24 01:24:32,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:24:32" (3/3) ... [2024-11-24 01:24:32,176 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem01_label46.c [2024-11-24 01:24:32,193 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:24:32,195 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem01_label46.c that has 1 procedures, 198 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 01:24:32,282 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:24:32,300 INFO L333 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, 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;@35d85117, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:24:32,300 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:24:32,304 INFO L276 IsEmpty]: Start isEmpty. Operand has 198 states, 196 states have (on average 1.6683673469387754) internal successors, (327), 197 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:24:32,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-24 01:24:32,317 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:24:32,318 INFO L218 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] [2024-11-24 01:24:32,318 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:24:32,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:24:32,324 INFO L85 PathProgramCache]: Analyzing trace with hash -429824977, now seen corresponding path program 1 times [2024-11-24 01:24:32,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:24:32,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910824837] [2024-11-24 01:24:32,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:24:32,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:24:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:24:33,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:24:33,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:24:33,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910824837] [2024-11-24 01:24:33,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910824837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:24:33,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:24:33,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:24:33,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253234476] [2024-11-24 01:24:33,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:24:33,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:24:33,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:24:33,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:24:33,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:24:33,220 INFO L87 Difference]: Start difference. First operand has 198 states, 196 states have (on average 1.6683673469387754) internal successors, (327), 197 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:24:34,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:24:34,209 INFO L93 Difference]: Finished difference Result 528 states and 915 transitions. [2024-11-24 01:24:34,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:24:34,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2024-11-24 01:24:34,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:24:34,219 INFO L225 Difference]: With dead ends: 528 [2024-11-24 01:24:34,219 INFO L226 Difference]: Without dead ends: 266 [2024-11-24 01:24:34,223 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:24:34,226 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 83 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:24:34,227 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 44 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-24 01:24:34,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-24 01:24:34,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2024-11-24 01:24:34,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 1.4792452830188678) internal successors, (392), 265 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:24:34,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 392 transitions. [2024-11-24 01:24:34,279 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 392 transitions. Word has length 112 [2024-11-24 01:24:34,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:24:34,280 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 392 transitions. [2024-11-24 01:24:34,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:24:34,280 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 392 transitions. [2024-11-24 01:24:34,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-24 01:24:34,287 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:24:34,287 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:24:34,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 01:24:34,288 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:24:34,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:24:34,291 INFO L85 PathProgramCache]: Analyzing trace with hash -779345401, now seen corresponding path program 1 times [2024-11-24 01:24:34,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:24:34,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181348695] [2024-11-24 01:24:34,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:24:34,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:24:34,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:24:34,500 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:24:34,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:24:34,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181348695] [2024-11-24 01:24:34,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181348695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:24:34,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:24:34,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:24:34,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305584023] [2024-11-24 01:24:34,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:24:34,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:24:34,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:24:34,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:24:34,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:24:34,503 INFO L87 Difference]: Start difference. First operand 266 states and 392 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:24:35,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:24:35,128 INFO L93 Difference]: Finished difference Result 792 states and 1171 transitions. [2024-11-24 01:24:35,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:24:35,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2024-11-24 01:24:35,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:24:35,131 INFO L225 Difference]: With dead ends: 792 [2024-11-24 01:24:35,131 INFO L226 Difference]: Without dead ends: 528 [2024-11-24 01:24:35,135 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:24:35,136 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 172 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:24:35,136 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 29 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 01:24:35,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2024-11-24 01:24:35,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 528. [2024-11-24 01:24:35,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 527 states have (on average 1.413662239089184) internal successors, (745), 527 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:24:35,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 745 transitions. [2024-11-24 01:24:35,176 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 745 transitions. Word has length 117 [2024-11-24 01:24:35,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:24:35,176 INFO L471 AbstractCegarLoop]: Abstraction has 528 states and 745 transitions. [2024-11-24 01:24:35,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:24:35,177 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 745 transitions. [2024-11-24 01:24:35,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-24 01:24:35,180 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:24:35,180 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:24:35,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:24:35,180 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:24:35,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:24:35,181 INFO L85 PathProgramCache]: Analyzing trace with hash 785225134, now seen corresponding path program 1 times [2024-11-24 01:24:35,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:24:35,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806351894] [2024-11-24 01:24:35,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:24:35,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:24:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:24:35,562 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:24:35,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:24:35,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806351894] [2024-11-24 01:24:35,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806351894] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:24:35,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:24:35,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:24:35,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570052435] [2024-11-24 01:24:35,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:24:35,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:24:35,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:24:35,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:24:35,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:24:35,568 INFO L87 Difference]: Start difference. First operand 528 states and 745 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:24:36,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:24:36,151 INFO L93 Difference]: Finished difference Result 1447 states and 2032 transitions. [2024-11-24 01:24:36,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:24:36,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2024-11-24 01:24:36,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:24:36,155 INFO L225 Difference]: With dead ends: 1447 [2024-11-24 01:24:36,156 INFO L226 Difference]: Without dead ends: 921 [2024-11-24 01:24:36,156 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:24:36,157 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 122 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:24:36,158 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 56 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 01:24:36,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2024-11-24 01:24:36,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 790. [2024-11-24 01:24:36,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 789 states have (on average 1.3219264892268694) internal successors, (1043), 789 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:24:36,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 1043 transitions. [2024-11-24 01:24:36,191 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 1043 transitions. Word has length 127 [2024-11-24 01:24:36,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:24:36,191 INFO L471 AbstractCegarLoop]: Abstraction has 790 states and 1043 transitions. [2024-11-24 01:24:36,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:24:36,192 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 1043 transitions. [2024-11-24 01:24:36,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-24 01:24:36,196 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:24:36,196 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:24:36,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 01:24:36,197 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:24:36,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:24:36,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1310436254, now seen corresponding path program 1 times [2024-11-24 01:24:36,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:24:36,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184667278] [2024-11-24 01:24:36,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:24:36,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:24:36,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:24:36,480 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-24 01:24:36,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:24:36,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184667278] [2024-11-24 01:24:36,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184667278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:24:36,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:24:36,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:24:36,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213085684] [2024-11-24 01:24:36,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:24:36,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:24:36,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:24:36,484 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:24:36,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:24:36,485 INFO L87 Difference]: Start difference. First operand 790 states and 1043 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:24:37,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:24:37,035 INFO L93 Difference]: Finished difference Result 1840 states and 2437 transitions. [2024-11-24 01:24:37,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:24:37,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2024-11-24 01:24:37,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:24:37,040 INFO L225 Difference]: With dead ends: 1840 [2024-11-24 01:24:37,040 INFO L226 Difference]: Without dead ends: 1052 [2024-11-24 01:24:37,041 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:24:37,041 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 127 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:24:37,042 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 74 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 01:24:37,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2024-11-24 01:24:37,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 921. [2024-11-24 01:24:37,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 920 states have (on average 1.2891304347826087) internal successors, (1186), 920 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:24:37,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1186 transitions. [2024-11-24 01:24:37,068 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1186 transitions. Word has length 128 [2024-11-24 01:24:37,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:24:37,069 INFO L471 AbstractCegarLoop]: Abstraction has 921 states and 1186 transitions. [2024-11-24 01:24:37,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:24:37,069 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1186 transitions. [2024-11-24 01:24:37,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-24 01:24:37,072 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:24:37,073 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:24:37,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 01:24:37,073 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:24:37,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:24:37,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1497661910, now seen corresponding path program 1 times [2024-11-24 01:24:37,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:24:37,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119254082] [2024-11-24 01:24:37,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:24:37,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:24:37,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:24:37,312 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-24 01:24:37,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:24:37,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119254082] [2024-11-24 01:24:37,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119254082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:24:37,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:24:37,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:24:37,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533307865] [2024-11-24 01:24:37,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:24:37,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:24:37,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:24:37,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:24:37,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:24:37,315 INFO L87 Difference]: Start difference. First operand 921 states and 1186 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:24:37,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:24:37,857 INFO L93 Difference]: Finished difference Result 2102 states and 2723 transitions. [2024-11-24 01:24:37,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:24:37,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2024-11-24 01:24:37,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:24:37,863 INFO L225 Difference]: With dead ends: 2102 [2024-11-24 01:24:37,864 INFO L226 Difference]: Without dead ends: 1183 [2024-11-24 01:24:37,865 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:24:37,869 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 129 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:24:37,869 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 61 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 01:24:37,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2024-11-24 01:24:37,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1183. [2024-11-24 01:24:37,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1182 states have (on average 1.260575296108291) internal successors, (1490), 1182 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:24:37,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1490 transitions. [2024-11-24 01:24:37,906 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1490 transitions. Word has length 132 [2024-11-24 01:24:37,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:24:37,906 INFO L471 AbstractCegarLoop]: Abstraction has 1183 states and 1490 transitions. [2024-11-24 01:24:37,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:24:37,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1490 transitions. [2024-11-24 01:24:37,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-24 01:24:37,910 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:24:37,910 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:24:37,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 01:24:37,911 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:24:37,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:24:37,912 INFO L85 PathProgramCache]: Analyzing trace with hash 2033432322, now seen corresponding path program 1 times [2024-11-24 01:24:37,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:24:37,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403966260] [2024-11-24 01:24:37,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:24:37,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:24:37,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:24:38,221 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-24 01:24:38,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:24:38,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403966260] [2024-11-24 01:24:38,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403966260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:24:38,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:24:38,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:24:38,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783565450] [2024-11-24 01:24:38,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:24:38,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:24:38,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:24:38,223 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:24:38,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:24:38,223 INFO L87 Difference]: Start difference. First operand 1183 states and 1490 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:24:39,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:24:39,127 INFO L93 Difference]: Finished difference Result 2888 states and 3586 transitions. [2024-11-24 01:24:39,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:24:39,128 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2024-11-24 01:24:39,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:24:39,134 INFO L225 Difference]: With dead ends: 2888 [2024-11-24 01:24:39,134 INFO L226 Difference]: Without dead ends: 1576 [2024-11-24 01:24:39,139 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:24:39,140 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 274 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:24:39,140 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 39 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 01:24:39,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2024-11-24 01:24:39,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1576. [2024-11-24 01:24:39,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1575 states have (on average 1.1352380952380952) internal successors, (1788), 1575 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:24:39,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 1788 transitions. [2024-11-24 01:24:39,182 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 1788 transitions. Word has length 161 [2024-11-24 01:24:39,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:24:39,182 INFO L471 AbstractCegarLoop]: Abstraction has 1576 states and 1788 transitions. [2024-11-24 01:24:39,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:24:39,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 1788 transitions. [2024-11-24 01:24:39,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-24 01:24:39,187 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:24:39,187 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:24:39,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 01:24:39,188 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:24:39,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:24:39,189 INFO L85 PathProgramCache]: Analyzing trace with hash -606130043, now seen corresponding path program 1 times [2024-11-24 01:24:39,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:24:39,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990904116] [2024-11-24 01:24:39,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:24:39,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:24:39,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:24:39,576 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-24 01:24:39,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:24:39,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990904116] [2024-11-24 01:24:39,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990904116] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:24:39,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:24:39,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:24:39,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34985680] [2024-11-24 01:24:39,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:24:39,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:24:39,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:24:39,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:24:39,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:24:39,581 INFO L87 Difference]: Start difference. First operand 1576 states and 1788 transitions. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:24:40,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:24:40,416 INFO L93 Difference]: Finished difference Result 3543 states and 4021 transitions. [2024-11-24 01:24:40,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:24:40,417 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 178 [2024-11-24 01:24:40,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:24:40,424 INFO L225 Difference]: With dead ends: 3543 [2024-11-24 01:24:40,425 INFO L226 Difference]: Without dead ends: 1969 [2024-11-24 01:24:40,426 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:24:40,427 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 222 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:24:40,428 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 28 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 01:24:40,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1969 states. [2024-11-24 01:24:40,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1969 to 1707. [2024-11-24 01:24:40,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1706 states have (on average 1.130715123094959) internal successors, (1929), 1706 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:24:40,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 1929 transitions. [2024-11-24 01:24:40,476 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 1929 transitions. Word has length 178 [2024-11-24 01:24:40,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:24:40,477 INFO L471 AbstractCegarLoop]: Abstraction has 1707 states and 1929 transitions. [2024-11-24 01:24:40,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:24:40,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 1929 transitions. [2024-11-24 01:24:40,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-24 01:24:40,482 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:24:40,482 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:24:40,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 01:24:40,483 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:24:40,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:24:40,484 INFO L85 PathProgramCache]: Analyzing trace with hash 951353973, now seen corresponding path program 1 times [2024-11-24 01:24:40,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:24:40,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569774556] [2024-11-24 01:24:40,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:24:40,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:24:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:24:40,798 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-24 01:24:40,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:24:40,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569774556] [2024-11-24 01:24:40,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569774556] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:24:40,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:24:40,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:24:40,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390937285] [2024-11-24 01:24:40,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:24:40,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:24:40,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:24:40,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:24:40,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:24:40,799 INFO L87 Difference]: Start difference. First operand 1707 states and 1929 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:24:41,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:24:41,559 INFO L93 Difference]: Finished difference Result 3543 states and 4006 transitions. [2024-11-24 01:24:41,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:24:41,560 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 187 [2024-11-24 01:24:41,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:24:41,567 INFO L225 Difference]: With dead ends: 3543 [2024-11-24 01:24:41,568 INFO L226 Difference]: Without dead ends: 1838 [2024-11-24 01:24:41,569 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:24:41,570 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 372 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:24:41,570 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 42 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 01:24:41,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2024-11-24 01:24:41,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1838. [2024-11-24 01:24:41,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1838 states, 1837 states have (on average 1.1197604790419162) internal successors, (2057), 1837 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:24:41,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 2057 transitions. [2024-11-24 01:24:41,618 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 2057 transitions. Word has length 187 [2024-11-24 01:24:41,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:24:41,619 INFO L471 AbstractCegarLoop]: Abstraction has 1838 states and 2057 transitions. [2024-11-24 01:24:41,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:24:41,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 2057 transitions. [2024-11-24 01:24:41,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-24 01:24:41,623 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:24:41,624 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:24:41,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 01:24:41,624 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:24:41,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:24:41,624 INFO L85 PathProgramCache]: Analyzing trace with hash -80166730, now seen corresponding path program 1 times [2024-11-24 01:24:41,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:24:41,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216938556] [2024-11-24 01:24:41,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:24:41,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:24:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:24:41,887 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-24 01:24:41,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:24:41,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216938556] [2024-11-24 01:24:41,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216938556] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:24:41,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:24:41,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:24:41,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492963892] [2024-11-24 01:24:41,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:24:41,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:24:41,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:24:41,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:24:41,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:24:41,890 INFO L87 Difference]: Start difference. First operand 1838 states and 2057 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:24:42,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:24:42,341 INFO L93 Difference]: Finished difference Result 3936 states and 4385 transitions. [2024-11-24 01:24:42,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:24:42,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 205 [2024-11-24 01:24:42,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:24:42,351 INFO L225 Difference]: With dead ends: 3936 [2024-11-24 01:24:42,351 INFO L226 Difference]: Without dead ends: 2100 [2024-11-24 01:24:42,353 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:24:42,353 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 88 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:24:42,354 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 177 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 01:24:42,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2024-11-24 01:24:42,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 1969. [2024-11-24 01:24:42,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1969 states, 1968 states have (on average 1.0960365853658536) internal successors, (2157), 1968 states have internal predecessors, (2157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:24:42,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1969 states to 1969 states and 2157 transitions. [2024-11-24 01:24:42,406 INFO L78 Accepts]: Start accepts. Automaton has 1969 states and 2157 transitions. Word has length 205 [2024-11-24 01:24:42,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:24:42,407 INFO L471 AbstractCegarLoop]: Abstraction has 1969 states and 2157 transitions. [2024-11-24 01:24:42,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:24:42,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1969 states and 2157 transitions. [2024-11-24 01:24:42,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-24 01:24:42,413 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:24:42,413 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:24:42,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 01:24:42,413 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:24:42,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:24:42,415 INFO L85 PathProgramCache]: Analyzing trace with hash 119864767, now seen corresponding path program 1 times [2024-11-24 01:24:42,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:24:42,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710498307] [2024-11-24 01:24:42,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:24:42,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:24:42,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:24:42,728 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2024-11-24 01:24:42,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:24:42,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710498307] [2024-11-24 01:24:42,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710498307] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:24:42,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:24:42,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:24:42,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675552205] [2024-11-24 01:24:42,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:24:42,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:24:42,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:24:42,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:24:42,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:24:42,730 INFO L87 Difference]: Start difference. First operand 1969 states and 2157 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:24:43,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:24:43,170 INFO L93 Difference]: Finished difference Result 2626 states and 2854 transitions. [2024-11-24 01:24:43,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:24:43,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 227 [2024-11-24 01:24:43,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:24:43,181 INFO L225 Difference]: With dead ends: 2626 [2024-11-24 01:24:43,181 INFO L226 Difference]: Without dead ends: 2624 [2024-11-24 01:24:43,182 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:24:43,184 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 40 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:24:43,184 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 30 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 01:24:43,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2624 states. [2024-11-24 01:24:43,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2624 to 1969. [2024-11-24 01:24:43,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1969 states, 1968 states have (on average 1.0955284552845528) internal successors, (2156), 1968 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:24:43,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1969 states to 1969 states and 2156 transitions. [2024-11-24 01:24:43,239 INFO L78 Accepts]: Start accepts. Automaton has 1969 states and 2156 transitions. Word has length 227 [2024-11-24 01:24:43,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:24:43,241 INFO L471 AbstractCegarLoop]: Abstraction has 1969 states and 2156 transitions. [2024-11-24 01:24:43,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:24:43,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1969 states and 2156 transitions. [2024-11-24 01:24:43,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2024-11-24 01:24:43,247 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:24:43,248 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:24:43,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 01:24:43,248 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:24:43,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:24:43,248 INFO L85 PathProgramCache]: Analyzing trace with hash 965110583, now seen corresponding path program 1 times [2024-11-24 01:24:43,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:24:43,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786965043] [2024-11-24 01:24:43,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:24:43,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:24:43,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:24:44,004 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 314 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2024-11-24 01:24:44,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:24:44,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786965043] [2024-11-24 01:24:44,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786965043] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:24:44,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:24:44,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:24:44,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585775179] [2024-11-24 01:24:44,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:24:44,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:24:44,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:24:44,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:24:44,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:24:44,006 INFO L87 Difference]: Start difference. First operand 1969 states and 2156 transitions. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:24:44,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:24:44,700 INFO L93 Difference]: Finished difference Result 4065 states and 4443 transitions. [2024-11-24 01:24:44,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:24:44,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 282 [2024-11-24 01:24:44,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:24:44,702 INFO L225 Difference]: With dead ends: 4065 [2024-11-24 01:24:44,702 INFO L226 Difference]: Without dead ends: 0 [2024-11-24 01:24:44,705 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:24:44,706 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 334 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:24:44,706 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 41 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 01:24:44,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-24 01:24:44,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-24 01:24:44,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:24:44,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-24 01:24:44,708 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 282 [2024-11-24 01:24:44,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:24:44,708 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-24 01:24:44,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:24:44,708 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-24 01:24:44,708 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-24 01:24:44,711 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-24 01:24:44,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 01:24:44,715 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:24:44,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-24 01:24:44,975 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-24 01:24:44,991 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 01:24:44 BoogieIcfgContainer [2024-11-24 01:24:44,992 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-24 01:24:44,992 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-24 01:24:44,992 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-24 01:24:44,993 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-24 01:24:44,993 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:24:32" (3/4) ... [2024-11-24 01:24:44,996 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-24 01:24:45,021 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-24 01:24:45,022 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-24 01:24:45,023 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-24 01:24:45,026 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-24 01:24:45,153 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555d410-31ba-401c-9ffe-4393d19b13de/bin/uautomizer-verify-LYvppIcaGC/witness.graphml [2024-11-24 01:24:45,153 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555d410-31ba-401c-9ffe-4393d19b13de/bin/uautomizer-verify-LYvppIcaGC/witness.yml [2024-11-24 01:24:45,153 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-24 01:24:45,154 INFO L158 Benchmark]: Toolchain (without parser) took 15304.18ms. Allocated memory was 117.4MB in the beginning and 226.5MB in the end (delta: 109.1MB). Free memory was 90.6MB in the beginning and 78.2MB in the end (delta: 12.4MB). Peak memory consumption was 125.0MB. Max. memory is 16.1GB. [2024-11-24 01:24:45,155 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 117.4MB. Free memory was 72.9MB in the beginning and 72.7MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:24:45,155 INFO L158 Benchmark]: CACSL2BoogieTranslator took 572.93ms. Allocated memory is still 117.4MB. Free memory was 90.4MB in the beginning and 62.9MB in the end (delta: 27.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-24 01:24:45,155 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.71ms. Allocated memory is still 117.4MB. Free memory was 62.9MB in the beginning and 57.5MB in the end (delta: 5.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:24:45,156 INFO L158 Benchmark]: Boogie Preprocessor took 97.70ms. Allocated memory is still 117.4MB. Free memory was 57.5MB in the beginning and 52.8MB in the end (delta: 4.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 01:24:45,156 INFO L158 Benchmark]: RCFGBuilder took 1569.55ms. Allocated memory is still 117.4MB. Free memory was 52.6MB in the beginning and 77.4MB in the end (delta: -24.9MB). Peak memory consumption was 32.8MB. Max. memory is 16.1GB. [2024-11-24 01:24:45,156 INFO L158 Benchmark]: TraceAbstraction took 12822.76ms. Allocated memory was 117.4MB in the beginning and 226.5MB in the end (delta: 109.1MB). Free memory was 77.4MB in the beginning and 89.7MB in the end (delta: -12.3MB). Peak memory consumption was 89.7MB. Max. memory is 16.1GB. [2024-11-24 01:24:45,157 INFO L158 Benchmark]: Witness Printer took 161.23ms. Allocated memory is still 226.5MB. Free memory was 89.7MB in the beginning and 78.2MB in the end (delta: 11.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-24 01:24:45,158 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 117.4MB. Free memory was 72.9MB in the beginning and 72.7MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 572.93ms. Allocated memory is still 117.4MB. Free memory was 90.4MB in the beginning and 62.9MB in the end (delta: 27.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.71ms. Allocated memory is still 117.4MB. Free memory was 62.9MB in the beginning and 57.5MB in the end (delta: 5.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 97.70ms. Allocated memory is still 117.4MB. Free memory was 57.5MB in the beginning and 52.8MB in the end (delta: 4.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1569.55ms. Allocated memory is still 117.4MB. Free memory was 52.6MB in the beginning and 77.4MB in the end (delta: -24.9MB). Peak memory consumption was 32.8MB. Max. memory is 16.1GB. * TraceAbstraction took 12822.76ms. Allocated memory was 117.4MB in the beginning and 226.5MB in the end (delta: 109.1MB). Free memory was 77.4MB in the beginning and 89.7MB in the end (delta: -12.3MB). Peak memory consumption was 89.7MB. Max. memory is 16.1GB. * Witness Printer took 161.23ms. Allocated memory is still 226.5MB. Free memory was 89.7MB in the beginning and 78.2MB in the end (delta: 11.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 522]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 198 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.5s, OverallIterations: 11, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 7.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1963 SdHoareTripleChecker+Valid, 6.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1963 mSDsluCounter, 621 SdHoareTripleChecker+Invalid, 5.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 74 mSDsCounter, 838 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4371 IncrementalHoareTripleChecker+Invalid, 5209 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 838 mSolverCounterUnsat, 547 mSDtfsCounter, 4371 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1969occurred in iteration=9, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 11 MinimizatonAttempts, 1310 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 1856 NumberOfCodeBlocks, 1856 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1845 ConstructedInterpolants, 0 QuantifiedInterpolants, 3447 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 1085/1085 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((((a21 == 1) && (a16 <= 5)) || (((a16 == 6) && (a21 == 1)) && (15 <= a8))) || ((a16 == 6) && (a20 == 1))) || ((a16 <= 5) && (a20 == 1))) || ((a21 == 1) && (a20 == 1))) || ((a17 == 1) && (a16 <= 5))) RESULT: Ultimate proved your program to be correct! [2024-11-24 01:24:45,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7555d410-31ba-401c-9ffe-4393d19b13de/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE