./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem03_label22.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem03_label22.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB --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 f365a0f129fa90e96f59a2a67efc46f6bd75f705664f3dab23b0f5e5824e9e07 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:22:59,387 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:22:59,499 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:22:59,504 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:22:59,507 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:22:59,548 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:22:59,551 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:22:59,551 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:22:59,552 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:22:59,552 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:22:59,554 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:22:59,554 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:22:59,554 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:22:59,555 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:22:59,555 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:22:59,555 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:22:59,556 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:22:59,556 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:22:59,556 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:22:59,556 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:22:59,556 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:22:59,557 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:22:59,557 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:22:59,557 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:22:59,557 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:22:59,557 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:22:59,557 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:22:59,558 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:22:59,558 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:22:59,558 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:22:59,558 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:22:59,558 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:22:59,558 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:22:59,559 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:22:59,560 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:22:59,560 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:22:59,560 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:22:59,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:22:59,560 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:22:59,561 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:22:59,561 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:22:59,561 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:22:59,561 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:22:59,561 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:22:59,561 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:22:59,561 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:22:59,561 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:22:59,562 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:22:59,562 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_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB 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 -> f365a0f129fa90e96f59a2a67efc46f6bd75f705664f3dab23b0f5e5824e9e07 [2024-11-27 20:22:59,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:22:59,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:22:59,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:22:59,948 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:22:59,948 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:22:59,949 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/eca-rers2012/Problem03_label22.c [2024-11-27 20:23:03,279 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/data/0828ab8c8/fde89597d0d44bf6a83477f42ed631aa/FLAG14c33f9dd [2024-11-27 20:23:03,711 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:23:03,711 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/sv-benchmarks/c/eca-rers2012/Problem03_label22.c [2024-11-27 20:23:03,733 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/data/0828ab8c8/fde89597d0d44bf6a83477f42ed631aa/FLAG14c33f9dd [2024-11-27 20:23:03,754 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/data/0828ab8c8/fde89597d0d44bf6a83477f42ed631aa [2024-11-27 20:23:03,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:23:03,760 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:23:03,763 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:23:03,764 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:23:03,768 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:23:03,769 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:23:03" (1/1) ... [2024-11-27 20:23:03,770 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cc4a375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:23:03, skipping insertion in model container [2024-11-27 20:23:03,770 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:23:03" (1/1) ... [2024-11-27 20:23:03,844 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:23:04,415 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_0e2a9690-6b26-4640-ba9d-38bea221b54a/sv-benchmarks/c/eca-rers2012/Problem03_label22.c[56764,56777] [2024-11-27 20:23:04,456 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:23:04,474 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:23:04,762 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_0e2a9690-6b26-4640-ba9d-38bea221b54a/sv-benchmarks/c/eca-rers2012/Problem03_label22.c[56764,56777] [2024-11-27 20:23:04,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:23:04,835 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:23:04,836 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:23:04 WrapperNode [2024-11-27 20:23:04,837 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:23:04,838 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:23:04,838 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:23:04,838 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:23:04,852 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:23:04" (1/1) ... [2024-11-27 20:23:04,891 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:23:04" (1/1) ... [2024-11-27 20:23:05,000 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2024-11-27 20:23:05,000 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:23:05,000 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:23:05,001 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:23:05,001 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:23:05,011 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:23:04" (1/1) ... [2024-11-27 20:23:05,011 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:23:04" (1/1) ... [2024-11-27 20:23:05,033 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:23:04" (1/1) ... [2024-11-27 20:23:05,080 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]. [2024-11-27 20:23:05,080 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:23:04" (1/1) ... [2024-11-27 20:23:05,080 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:23:04" (1/1) ... [2024-11-27 20:23:05,140 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:23:04" (1/1) ... [2024-11-27 20:23:05,144 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:23:04" (1/1) ... [2024-11-27 20:23:05,163 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:23:04" (1/1) ... [2024-11-27 20:23:05,178 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:23:04" (1/1) ... [2024-11-27 20:23:05,189 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:23:04" (1/1) ... [2024-11-27 20:23:05,206 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:23:05,207 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:23:05,208 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:23:05,208 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:23:05,209 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:23:04" (1/1) ... [2024-11-27 20:23:05,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:23:05,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:05,250 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:23:05,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:23:05,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:23:05,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:23:05,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:23:05,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:23:05,380 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:23:05,382 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:23:08,159 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-27 20:23:08,159 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:23:08,183 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:23:08,187 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 20:23:08,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:23:08 BoogieIcfgContainer [2024-11-27 20:23:08,188 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:23:08,190 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:23:08,193 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:23:08,201 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:23:08,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:23:03" (1/3) ... [2024-11-27 20:23:08,202 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d7111bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:23:08, skipping insertion in model container [2024-11-27 20:23:08,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:23:04" (2/3) ... [2024-11-27 20:23:08,204 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d7111bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:23:08, skipping insertion in model container [2024-11-27 20:23:08,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:23:08" (3/3) ... [2024-11-27 20:23:08,207 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem03_label22.c [2024-11-27 20:23:08,227 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:23:08,231 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem03_label22.c that has 1 procedures, 302 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 20:23:08,321 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:23:08,338 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;@4f5fc327, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:23:08,338 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:23:08,344 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 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) [2024-11-27 20:23:08,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-27 20:23:08,364 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:08,364 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:08,365 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:08,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:08,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1133598669, now seen corresponding path program 1 times [2024-11-27 20:23:08,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:08,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935070620] [2024-11-27 20:23:08,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:08,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:09,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:09,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:09,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935070620] [2024-11-27 20:23:09,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935070620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:09,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:23:09,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:23:09,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674311082] [2024-11-27 20:23:09,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:09,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:23:09,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:09,744 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:23:09,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:23:09,750 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 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 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 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) [2024-11-27 20:23:11,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:11,509 INFO L93 Difference]: Finished difference Result 857 states and 1498 transitions. [2024-11-27 20:23:11,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:23:11,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 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 167 [2024-11-27 20:23:11,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:11,532 INFO L225 Difference]: With dead ends: 857 [2024-11-27 20:23:11,532 INFO L226 Difference]: Without dead ends: 462 [2024-11-27 20:23:11,540 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 [2024-11-27 20:23:11,547 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 121 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:11,548 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 187 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-27 20:23:11,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2024-11-27 20:23:11,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 460. [2024-11-27 20:23:11,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 459 states have (on average 1.5381263616557734) internal successors, (706), 459 states have internal predecessors, (706), 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) [2024-11-27 20:23:11,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 706 transitions. [2024-11-27 20:23:11,633 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 706 transitions. Word has length 167 [2024-11-27 20:23:11,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:11,634 INFO L471 AbstractCegarLoop]: Abstraction has 460 states and 706 transitions. [2024-11-27 20:23:11,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 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) [2024-11-27 20:23:11,634 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 706 transitions. [2024-11-27 20:23:11,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-27 20:23:11,638 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:11,638 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:11,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:23:11,639 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:11,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:11,641 INFO L85 PathProgramCache]: Analyzing trace with hash 166120884, now seen corresponding path program 1 times [2024-11-27 20:23:11,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:11,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333480663] [2024-11-27 20:23:11,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:11,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:11,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:12,104 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:12,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:12,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333480663] [2024-11-27 20:23:12,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333480663] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:12,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:23:12,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:23:12,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054616824] [2024-11-27 20:23:12,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:12,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:23:12,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:12,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:23:12,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:23:12,109 INFO L87 Difference]: Start difference. First operand 460 states and 706 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 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) [2024-11-27 20:23:13,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:13,544 INFO L93 Difference]: Finished difference Result 1344 states and 2079 transitions. [2024-11-27 20:23:13,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:23:13,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 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 175 [2024-11-27 20:23:13,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:13,551 INFO L225 Difference]: With dead ends: 1344 [2024-11-27 20:23:13,551 INFO L226 Difference]: Without dead ends: 886 [2024-11-27 20:23:13,552 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 [2024-11-27 20:23:13,553 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 247 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:13,553 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 92 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-27 20:23:13,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2024-11-27 20:23:13,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 870. [2024-11-27 20:23:13,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 869 states have (on average 1.5120828538550057) internal successors, (1314), 869 states have internal predecessors, (1314), 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) [2024-11-27 20:23:13,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1314 transitions. [2024-11-27 20:23:13,611 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1314 transitions. Word has length 175 [2024-11-27 20:23:13,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:13,611 INFO L471 AbstractCegarLoop]: Abstraction has 870 states and 1314 transitions. [2024-11-27 20:23:13,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 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) [2024-11-27 20:23:13,611 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1314 transitions. [2024-11-27 20:23:13,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-27 20:23:13,617 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:13,617 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:13,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:23:13,618 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:13,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:13,619 INFO L85 PathProgramCache]: Analyzing trace with hash 2000740269, now seen corresponding path program 1 times [2024-11-27 20:23:13,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:13,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323883514] [2024-11-27 20:23:13,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:13,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:14,165 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 20:23:14,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:14,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323883514] [2024-11-27 20:23:14,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323883514] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:14,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:23:14,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:23:14,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559441394] [2024-11-27 20:23:14,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:14,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:23:14,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:14,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:23:14,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:23:14,170 INFO L87 Difference]: Start difference. First operand 870 states and 1314 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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) [2024-11-27 20:23:15,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:15,245 INFO L93 Difference]: Finished difference Result 2554 states and 3869 transitions. [2024-11-27 20:23:15,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:23:15,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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 [2024-11-27 20:23:15,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:15,254 INFO L225 Difference]: With dead ends: 2554 [2024-11-27 20:23:15,254 INFO L226 Difference]: Without dead ends: 1686 [2024-11-27 20:23:15,256 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 [2024-11-27 20:23:15,259 INFO L435 NwaCegarLoop]: 388 mSDtfsCounter, 233 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:15,260 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 416 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 20:23:15,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2024-11-27 20:23:15,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1684. [2024-11-27 20:23:15,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1683 states have (on average 1.3368983957219251) internal successors, (2250), 1683 states have internal predecessors, (2250), 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) [2024-11-27 20:23:15,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2250 transitions. [2024-11-27 20:23:15,305 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2250 transitions. Word has length 187 [2024-11-27 20:23:15,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:15,305 INFO L471 AbstractCegarLoop]: Abstraction has 1684 states and 2250 transitions. [2024-11-27 20:23:15,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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) [2024-11-27 20:23:15,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2250 transitions. [2024-11-27 20:23:15,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-27 20:23:15,310 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:15,310 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:15,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:23:15,311 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:15,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:15,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1982576624, now seen corresponding path program 1 times [2024-11-27 20:23:15,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:15,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322816133] [2024-11-27 20:23:15,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:15,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:15,627 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:15,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:15,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322816133] [2024-11-27 20:23:15,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322816133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:15,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:23:15,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:23:15,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835739046] [2024-11-27 20:23:15,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:15,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:23:15,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:15,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:23:15,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:23:15,629 INFO L87 Difference]: Start difference. First operand 1684 states and 2250 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 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) [2024-11-27 20:23:16,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:16,662 INFO L93 Difference]: Finished difference Result 5005 states and 6690 transitions. [2024-11-27 20:23:16,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:23:16,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 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 190 [2024-11-27 20:23:16,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:16,674 INFO L225 Difference]: With dead ends: 5005 [2024-11-27 20:23:16,674 INFO L226 Difference]: Without dead ends: 3323 [2024-11-27 20:23:16,677 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 [2024-11-27 20:23:16,679 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 241 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:16,680 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 174 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 20:23:16,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3323 states. [2024-11-27 20:23:16,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3323 to 3320. [2024-11-27 20:23:16,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3320 states, 3319 states have (on average 1.2853269056944863) internal successors, (4266), 3319 states have internal predecessors, (4266), 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) [2024-11-27 20:23:16,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3320 states to 3320 states and 4266 transitions. [2024-11-27 20:23:16,766 INFO L78 Accepts]: Start accepts. Automaton has 3320 states and 4266 transitions. Word has length 190 [2024-11-27 20:23:16,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:16,766 INFO L471 AbstractCegarLoop]: Abstraction has 3320 states and 4266 transitions. [2024-11-27 20:23:16,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 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) [2024-11-27 20:23:16,767 INFO L276 IsEmpty]: Start isEmpty. Operand 3320 states and 4266 transitions. [2024-11-27 20:23:16,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-27 20:23:16,773 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:16,774 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:16,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:23:16,774 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:16,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:16,775 INFO L85 PathProgramCache]: Analyzing trace with hash 326250757, now seen corresponding path program 1 times [2024-11-27 20:23:16,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:16,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56443756] [2024-11-27 20:23:16,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:16,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:17,246 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 20:23:17,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:17,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56443756] [2024-11-27 20:23:17,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56443756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:17,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:23:17,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:23:17,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516890892] [2024-11-27 20:23:17,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:17,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:23:17,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:17,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:23:17,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:23:17,249 INFO L87 Difference]: Start difference. First operand 3320 states and 4266 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) [2024-11-27 20:23:18,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:18,737 INFO L93 Difference]: Finished difference Result 9900 states and 12723 transitions. [2024-11-27 20:23:18,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:23:18,738 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 202 [2024-11-27 20:23:18,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:18,763 INFO L225 Difference]: With dead ends: 9900 [2024-11-27 20:23:18,763 INFO L226 Difference]: Without dead ends: 6582 [2024-11-27 20:23:18,767 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 [2024-11-27 20:23:18,769 INFO L435 NwaCegarLoop]: 395 mSDtfsCounter, 202 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:18,769 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 418 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-27 20:23:18,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6582 states. [2024-11-27 20:23:18,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6582 to 6577. [2024-11-27 20:23:18,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6577 states, 6576 states have (on average 1.224756690997567) internal successors, (8054), 6576 states have internal predecessors, (8054), 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) [2024-11-27 20:23:18,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6577 states to 6577 states and 8054 transitions. [2024-11-27 20:23:18,975 INFO L78 Accepts]: Start accepts. Automaton has 6577 states and 8054 transitions. Word has length 202 [2024-11-27 20:23:18,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:18,976 INFO L471 AbstractCegarLoop]: Abstraction has 6577 states and 8054 transitions. [2024-11-27 20:23:18,976 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) [2024-11-27 20:23:18,976 INFO L276 IsEmpty]: Start isEmpty. Operand 6577 states and 8054 transitions. [2024-11-27 20:23:18,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-27 20:23:18,990 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:18,991 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:18,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 20:23:18,991 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:18,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:18,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1195043644, now seen corresponding path program 1 times [2024-11-27 20:23:18,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:18,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208967187] [2024-11-27 20:23:18,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:18,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:19,583 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:19,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:19,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208967187] [2024-11-27 20:23:19,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208967187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:19,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:23:19,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:23:19,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172229111] [2024-11-27 20:23:19,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:19,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:23:19,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:19,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:23:19,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:23:19,588 INFO L87 Difference]: Start difference. First operand 6577 states and 8054 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 states have internal predecessors, (208), 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) [2024-11-27 20:23:20,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:20,940 INFO L93 Difference]: Finished difference Result 16215 states and 19826 transitions. [2024-11-27 20:23:20,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:23:20,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 states have internal predecessors, (208), 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 208 [2024-11-27 20:23:20,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:20,978 INFO L225 Difference]: With dead ends: 16215 [2024-11-27 20:23:20,979 INFO L226 Difference]: Without dead ends: 9640 [2024-11-27 20:23:20,990 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 [2024-11-27 20:23:20,991 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 203 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:20,992 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 155 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-27 20:23:21,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9640 states. [2024-11-27 20:23:21,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9640 to 9638. [2024-11-27 20:23:21,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9638 states, 9637 states have (on average 1.2039016291376985) internal successors, (11602), 9637 states have internal predecessors, (11602), 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) [2024-11-27 20:23:21,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9638 states to 9638 states and 11602 transitions. [2024-11-27 20:23:21,222 INFO L78 Accepts]: Start accepts. Automaton has 9638 states and 11602 transitions. Word has length 208 [2024-11-27 20:23:21,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:21,222 INFO L471 AbstractCegarLoop]: Abstraction has 9638 states and 11602 transitions. [2024-11-27 20:23:21,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 states have internal predecessors, (208), 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) [2024-11-27 20:23:21,222 INFO L276 IsEmpty]: Start isEmpty. Operand 9638 states and 11602 transitions. [2024-11-27 20:23:21,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-27 20:23:21,237 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:21,238 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:21,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:23:21,238 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:21,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:21,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1486955153, now seen corresponding path program 1 times [2024-11-27 20:23:21,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:21,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905294041] [2024-11-27 20:23:21,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:21,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:21,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:21,946 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:21,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:21,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905294041] [2024-11-27 20:23:21,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905294041] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:21,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391379742] [2024-11-27 20:23:21,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:21,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:21,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:21,951 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:23:21,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:23:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:22,162 INFO L256 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:23:22,171 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:22,544 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 20:23:22,544 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:23:22,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391379742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:22,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:23:22,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-27 20:23:22,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921563311] [2024-11-27 20:23:22,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:22,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:23:22,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:22,546 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:23:22,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:23:22,547 INFO L87 Difference]: Start difference. First operand 9638 states and 11602 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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) [2024-11-27 20:23:23,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:23,792 INFO L93 Difference]: Finished difference Result 19277 states and 23207 transitions. [2024-11-27 20:23:23,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:23:23,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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 215 [2024-11-27 20:23:23,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:23,830 INFO L225 Difference]: With dead ends: 19277 [2024-11-27 20:23:23,831 INFO L226 Difference]: Without dead ends: 9641 [2024-11-27 20:23:23,841 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:23:23,841 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 111 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:23,842 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 98 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 20:23:23,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9641 states. [2024-11-27 20:23:24,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9641 to 9638. [2024-11-27 20:23:24,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9638 states, 9637 states have (on average 1.1977793919269482) internal successors, (11543), 9637 states have internal predecessors, (11543), 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) [2024-11-27 20:23:24,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9638 states to 9638 states and 11543 transitions. [2024-11-27 20:23:24,060 INFO L78 Accepts]: Start accepts. Automaton has 9638 states and 11543 transitions. Word has length 215 [2024-11-27 20:23:24,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:24,061 INFO L471 AbstractCegarLoop]: Abstraction has 9638 states and 11543 transitions. [2024-11-27 20:23:24,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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) [2024-11-27 20:23:24,061 INFO L276 IsEmpty]: Start isEmpty. Operand 9638 states and 11543 transitions. [2024-11-27 20:23:24,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2024-11-27 20:23:24,078 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:24,078 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:24,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:23:24,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-27 20:23:24,280 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:24,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:24,281 INFO L85 PathProgramCache]: Analyzing trace with hash -178927718, now seen corresponding path program 1 times [2024-11-27 20:23:24,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:24,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615868771] [2024-11-27 20:23:24,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:24,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:24,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:25,045 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 92 proven. 6 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-27 20:23:25,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:25,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615868771] [2024-11-27 20:23:25,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615868771] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:25,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668358658] [2024-11-27 20:23:25,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:25,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:25,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:25,051 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:23:25,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:23:25,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:25,327 INFO L256 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:23:25,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:25,471 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-27 20:23:25,471 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:23:25,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668358658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:25,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:23:25,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-27 20:23:25,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529927972] [2024-11-27 20:23:25,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:25,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:23:25,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:25,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:23:25,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:23:25,475 INFO L87 Difference]: Start difference. First operand 9638 states and 11543 transitions. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 2 states have internal predecessors, (202), 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) [2024-11-27 20:23:26,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:26,228 INFO L93 Difference]: Finished difference Result 19238 states and 23035 transitions. [2024-11-27 20:23:26,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:23:26,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 2 states have internal predecessors, (202), 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 248 [2024-11-27 20:23:26,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:26,262 INFO L225 Difference]: With dead ends: 19238 [2024-11-27 20:23:26,262 INFO L226 Difference]: Without dead ends: 9602 [2024-11-27 20:23:26,273 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:23:26,274 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 308 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:26,274 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 31 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 20:23:26,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9602 states. [2024-11-27 20:23:26,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9602 to 9602. [2024-11-27 20:23:26,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9602 states, 9601 states have (on average 1.1872721591500885) internal successors, (11399), 9601 states have internal predecessors, (11399), 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) [2024-11-27 20:23:26,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9602 states to 9602 states and 11399 transitions. [2024-11-27 20:23:26,551 INFO L78 Accepts]: Start accepts. Automaton has 9602 states and 11399 transitions. Word has length 248 [2024-11-27 20:23:26,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:26,551 INFO L471 AbstractCegarLoop]: Abstraction has 9602 states and 11399 transitions. [2024-11-27 20:23:26,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 2 states have internal predecessors, (202), 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) [2024-11-27 20:23:26,552 INFO L276 IsEmpty]: Start isEmpty. Operand 9602 states and 11399 transitions. [2024-11-27 20:23:26,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-11-27 20:23:26,580 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:26,580 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:26,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 20:23:26,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-27 20:23:26,781 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:26,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:26,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1189467201, now seen corresponding path program 1 times [2024-11-27 20:23:26,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:26,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926422447] [2024-11-27 20:23:26,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:26,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:27,140 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-27 20:23:27,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:27,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926422447] [2024-11-27 20:23:27,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926422447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:27,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:23:27,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:23:27,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994731382] [2024-11-27 20:23:27,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:27,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:23:27,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:27,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:23:27,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:23:27,143 INFO L87 Difference]: Start difference. First operand 9602 states and 11399 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 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) [2024-11-27 20:23:28,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:28,295 INFO L93 Difference]: Finished difference Result 25330 states and 29968 transitions. [2024-11-27 20:23:28,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:23:28,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 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 269 [2024-11-27 20:23:28,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:28,321 INFO L225 Difference]: With dead ends: 25330 [2024-11-27 20:23:28,321 INFO L226 Difference]: Without dead ends: 15730 [2024-11-27 20:23:28,327 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 [2024-11-27 20:23:28,328 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 205 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:28,328 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 115 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 20:23:28,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15730 states. [2024-11-27 20:23:28,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15730 to 15728. [2024-11-27 20:23:28,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15728 states, 15727 states have (on average 1.1773383353468558) internal successors, (18516), 15727 states have internal predecessors, (18516), 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) [2024-11-27 20:23:28,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15728 states to 15728 states and 18516 transitions. [2024-11-27 20:23:28,545 INFO L78 Accepts]: Start accepts. Automaton has 15728 states and 18516 transitions. Word has length 269 [2024-11-27 20:23:28,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:28,547 INFO L471 AbstractCegarLoop]: Abstraction has 15728 states and 18516 transitions. [2024-11-27 20:23:28,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 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) [2024-11-27 20:23:28,547 INFO L276 IsEmpty]: Start isEmpty. Operand 15728 states and 18516 transitions. [2024-11-27 20:23:28,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-11-27 20:23:28,571 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:28,571 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:28,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 20:23:28,572 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:28,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:28,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1680499850, now seen corresponding path program 1 times [2024-11-27 20:23:28,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:28,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978290289] [2024-11-27 20:23:28,573 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:28,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:29,070 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 68 proven. 6 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-27 20:23:29,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:29,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978290289] [2024-11-27 20:23:29,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978290289] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:29,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178693930] [2024-11-27 20:23:29,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:29,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:29,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:29,072 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:23:29,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:23:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:29,284 INFO L256 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:23:29,293 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:29,423 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 20:23:29,423 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:23:29,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178693930] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:29,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:23:29,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-27 20:23:29,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425756367] [2024-11-27 20:23:29,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:29,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:23:29,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:29,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:23:29,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:23:29,425 INFO L87 Difference]: Start difference. First operand 15728 states and 18516 transitions. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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) [2024-11-27 20:23:30,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:30,601 INFO L93 Difference]: Finished difference Result 30838 states and 36191 transitions. [2024-11-27 20:23:30,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:23:30,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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 276 [2024-11-27 20:23:30,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:30,628 INFO L225 Difference]: With dead ends: 30838 [2024-11-27 20:23:30,629 INFO L226 Difference]: Without dead ends: 15112 [2024-11-27 20:23:30,642 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:23:30,643 INFO L435 NwaCegarLoop]: 321 mSDtfsCounter, 177 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:30,644 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 336 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 20:23:30,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15112 states. [2024-11-27 20:23:30,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15112 to 15106. [2024-11-27 20:23:30,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15106 states, 15105 states have (on average 1.140946706388613) internal successors, (17234), 15105 states have internal predecessors, (17234), 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) [2024-11-27 20:23:30,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15106 states to 15106 states and 17234 transitions. [2024-11-27 20:23:30,999 INFO L78 Accepts]: Start accepts. Automaton has 15106 states and 17234 transitions. Word has length 276 [2024-11-27 20:23:30,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:30,999 INFO L471 AbstractCegarLoop]: Abstraction has 15106 states and 17234 transitions. [2024-11-27 20:23:31,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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) [2024-11-27 20:23:31,000 INFO L276 IsEmpty]: Start isEmpty. Operand 15106 states and 17234 transitions. [2024-11-27 20:23:31,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-11-27 20:23:31,043 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:31,044 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:31,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 20:23:31,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:31,245 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:31,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:31,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1655882943, now seen corresponding path program 1 times [2024-11-27 20:23:31,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:31,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918884494] [2024-11-27 20:23:31,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:31,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:31,995 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 94 proven. 6 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-27 20:23:31,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:31,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918884494] [2024-11-27 20:23:31,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918884494] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:31,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769685199] [2024-11-27 20:23:31,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:31,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:31,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:31,998 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:23:32,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:23:32,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:32,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:23:32,261 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:32,388 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 20:23:32,388 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:23:32,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769685199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:32,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:23:32,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-27 20:23:32,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655504827] [2024-11-27 20:23:32,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:32,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:23:32,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:32,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:23:32,390 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:23:32,390 INFO L87 Difference]: Start difference. First operand 15106 states and 17234 transitions. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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) [2024-11-27 20:23:33,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:33,510 INFO L93 Difference]: Finished difference Result 35291 states and 40808 transitions. [2024-11-27 20:23:33,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:23:33,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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 276 [2024-11-27 20:23:33,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:33,541 INFO L225 Difference]: With dead ends: 35291 [2024-11-27 20:23:33,541 INFO L226 Difference]: Without dead ends: 20187 [2024-11-27 20:23:33,553 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:23:33,553 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 163 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:33,554 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 135 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 20:23:33,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20187 states. [2024-11-27 20:23:33,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20187 to 19775. [2024-11-27 20:23:33,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19775 states, 19774 states have (on average 1.1240517851724487) internal successors, (22227), 19774 states have internal predecessors, (22227), 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) [2024-11-27 20:23:33,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19775 states to 19775 states and 22227 transitions. [2024-11-27 20:23:33,788 INFO L78 Accepts]: Start accepts. Automaton has 19775 states and 22227 transitions. Word has length 276 [2024-11-27 20:23:33,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:33,789 INFO L471 AbstractCegarLoop]: Abstraction has 19775 states and 22227 transitions. [2024-11-27 20:23:33,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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) [2024-11-27 20:23:33,790 INFO L276 IsEmpty]: Start isEmpty. Operand 19775 states and 22227 transitions. [2024-11-27 20:23:33,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-27 20:23:33,808 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:33,808 INFO L218 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:33,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 20:23:34,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:34,009 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:34,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:34,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1246965763, now seen corresponding path program 1 times [2024-11-27 20:23:34,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:34,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262489373] [2024-11-27 20:23:34,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:34,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:34,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:34,698 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:34,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:34,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262489373] [2024-11-27 20:23:34,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262489373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:34,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:23:34,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:23:34,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552794377] [2024-11-27 20:23:34,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:34,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:23:34,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:34,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:23:34,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:23:34,703 INFO L87 Difference]: Start difference. First operand 19775 states and 22227 transitions. Second operand has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 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) [2024-11-27 20:23:36,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:36,188 INFO L93 Difference]: Finished difference Result 42390 states and 47516 transitions. [2024-11-27 20:23:36,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:23:36,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 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 300 [2024-11-27 20:23:36,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:36,215 INFO L225 Difference]: With dead ends: 42390 [2024-11-27 20:23:36,216 INFO L226 Difference]: Without dead ends: 22617 [2024-11-27 20:23:36,227 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 [2024-11-27 20:23:36,228 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 289 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:36,228 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 172 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-27 20:23:36,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22617 states. [2024-11-27 20:23:36,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22617 to 21399. [2024-11-27 20:23:36,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21399 states, 21398 states have (on average 1.117020282269371) internal successors, (23902), 21398 states have internal predecessors, (23902), 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) [2024-11-27 20:23:36,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21399 states to 21399 states and 23902 transitions. [2024-11-27 20:23:36,539 INFO L78 Accepts]: Start accepts. Automaton has 21399 states and 23902 transitions. Word has length 300 [2024-11-27 20:23:36,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:36,539 INFO L471 AbstractCegarLoop]: Abstraction has 21399 states and 23902 transitions. [2024-11-27 20:23:36,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 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) [2024-11-27 20:23:36,540 INFO L276 IsEmpty]: Start isEmpty. Operand 21399 states and 23902 transitions. [2024-11-27 20:23:36,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2024-11-27 20:23:36,557 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:36,557 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 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] [2024-11-27 20:23:36,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 20:23:36,558 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:36,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:36,558 INFO L85 PathProgramCache]: Analyzing trace with hash 646862978, now seen corresponding path program 1 times [2024-11-27 20:23:36,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:36,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704964412] [2024-11-27 20:23:36,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:36,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:36,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:36,847 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-27 20:23:36,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:36,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704964412] [2024-11-27 20:23:36,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704964412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:36,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:23:36,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:23:36,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686053471] [2024-11-27 20:23:36,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:36,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:23:36,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:36,849 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:23:36,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:23:36,850 INFO L87 Difference]: Start difference. First operand 21399 states and 23902 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 2 states have internal predecessors, (243), 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) [2024-11-27 20:23:37,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:37,931 INFO L93 Difference]: Finished difference Result 51961 states and 58199 transitions. [2024-11-27 20:23:37,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:23:37,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 2 states have internal predecessors, (243), 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 303 [2024-11-27 20:23:37,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:37,977 INFO L225 Difference]: With dead ends: 51961 [2024-11-27 20:23:37,977 INFO L226 Difference]: Without dead ends: 30564 [2024-11-27 20:23:37,995 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 [2024-11-27 20:23:37,996 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 156 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:37,996 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 142 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 20:23:38,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30564 states. [2024-11-27 20:23:38,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30564 to 25666. [2024-11-27 20:23:38,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25666 states, 25665 states have (on average 1.1227742061172803) internal successors, (28816), 25665 states have internal predecessors, (28816), 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) [2024-11-27 20:23:38,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25666 states to 25666 states and 28816 transitions. [2024-11-27 20:23:38,542 INFO L78 Accepts]: Start accepts. Automaton has 25666 states and 28816 transitions. Word has length 303 [2024-11-27 20:23:38,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:38,544 INFO L471 AbstractCegarLoop]: Abstraction has 25666 states and 28816 transitions. [2024-11-27 20:23:38,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 2 states have internal predecessors, (243), 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) [2024-11-27 20:23:38,544 INFO L276 IsEmpty]: Start isEmpty. Operand 25666 states and 28816 transitions. [2024-11-27 20:23:38,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2024-11-27 20:23:38,565 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:38,565 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-27 20:23:38,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 20:23:38,566 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:38,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:38,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1127420156, now seen corresponding path program 1 times [2024-11-27 20:23:38,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:38,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011179054] [2024-11-27 20:23:38,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:38,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:38,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:39,300 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 110 proven. 6 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2024-11-27 20:23:39,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:39,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011179054] [2024-11-27 20:23:39,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011179054] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:39,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316143344] [2024-11-27 20:23:39,301 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:39,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:39,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:39,304 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:23:39,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:23:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:39,544 INFO L256 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:23:39,549 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:39,906 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-27 20:23:39,906 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:23:39,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316143344] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:39,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:23:39,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-27 20:23:39,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115693764] [2024-11-27 20:23:39,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:39,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:23:39,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:39,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:23:39,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:23:39,909 INFO L87 Difference]: Start difference. First operand 25666 states and 28816 transitions. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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) [2024-11-27 20:23:41,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:41,039 INFO L93 Difference]: Finished difference Result 54801 states and 61516 transitions. [2024-11-27 20:23:41,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:23:41,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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 308 [2024-11-27 20:23:41,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:41,066 INFO L225 Difference]: With dead ends: 54801 [2024-11-27 20:23:41,066 INFO L226 Difference]: Without dead ends: 29137 [2024-11-27 20:23:41,084 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:23:41,085 INFO L435 NwaCegarLoop]: 351 mSDtfsCounter, 65 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:41,086 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 376 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 20:23:41,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29137 states. [2024-11-27 20:23:41,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29137 to 29113. [2024-11-27 20:23:41,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29113 states, 29112 states have (on average 1.1144201703764771) internal successors, (32443), 29112 states have internal predecessors, (32443), 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) [2024-11-27 20:23:41,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29113 states to 29113 states and 32443 transitions. [2024-11-27 20:23:41,454 INFO L78 Accepts]: Start accepts. Automaton has 29113 states and 32443 transitions. Word has length 308 [2024-11-27 20:23:41,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:41,455 INFO L471 AbstractCegarLoop]: Abstraction has 29113 states and 32443 transitions. [2024-11-27 20:23:41,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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) [2024-11-27 20:23:41,455 INFO L276 IsEmpty]: Start isEmpty. Operand 29113 states and 32443 transitions. [2024-11-27 20:23:41,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-11-27 20:23:41,548 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:41,548 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1] [2024-11-27 20:23:41,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 20:23:41,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-27 20:23:41,749 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:41,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:41,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1083274386, now seen corresponding path program 1 times [2024-11-27 20:23:41,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:41,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6572174] [2024-11-27 20:23:41,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:41,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:42,015 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:23:42,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:42,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6572174] [2024-11-27 20:23:42,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6572174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:42,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:23:42,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:23:42,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868646045] [2024-11-27 20:23:42,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:42,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:23:42,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:42,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:23:42,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:23:42,019 INFO L87 Difference]: Start difference. First operand 29113 states and 32443 transitions. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 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) [2024-11-27 20:23:43,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:43,031 INFO L93 Difference]: Finished difference Result 54556 states and 60866 transitions. [2024-11-27 20:23:43,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:23:43,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 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 324 [2024-11-27 20:23:43,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:43,054 INFO L225 Difference]: With dead ends: 54556 [2024-11-27 20:23:43,054 INFO L226 Difference]: Without dead ends: 25445 [2024-11-27 20:23:43,070 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 [2024-11-27 20:23:43,070 INFO L435 NwaCegarLoop]: 317 mSDtfsCounter, 197 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:43,071 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 333 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 20:23:43,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25445 states. [2024-11-27 20:23:43,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25445 to 24427. [2024-11-27 20:23:43,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24427 states, 24426 states have (on average 1.0947760582985344) internal successors, (26741), 24426 states have internal predecessors, (26741), 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) [2024-11-27 20:23:43,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24427 states to 24427 states and 26741 transitions. [2024-11-27 20:23:43,405 INFO L78 Accepts]: Start accepts. Automaton has 24427 states and 26741 transitions. Word has length 324 [2024-11-27 20:23:43,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:43,406 INFO L471 AbstractCegarLoop]: Abstraction has 24427 states and 26741 transitions. [2024-11-27 20:23:43,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 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) [2024-11-27 20:23:43,406 INFO L276 IsEmpty]: Start isEmpty. Operand 24427 states and 26741 transitions. [2024-11-27 20:23:43,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2024-11-27 20:23:43,426 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:43,427 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:43,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 20:23:43,427 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:43,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:43,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1943868510, now seen corresponding path program 1 times [2024-11-27 20:23:43,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:43,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662022399] [2024-11-27 20:23:43,428 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:43,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:43,982 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-27 20:23:43,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:43,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662022399] [2024-11-27 20:23:43,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662022399] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:43,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:23:43,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:23:43,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217553210] [2024-11-27 20:23:43,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:43,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:23:43,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:43,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:23:43,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:23:43,983 INFO L87 Difference]: Start difference. First operand 24427 states and 26741 transitions. Second operand has 4 states, 4 states have (on average 67.5) internal successors, (270), 3 states have internal predecessors, (270), 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) [2024-11-27 20:23:45,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:45,452 INFO L93 Difference]: Finished difference Result 54964 states and 60433 transitions. [2024-11-27 20:23:45,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:23:45,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 67.5) internal successors, (270), 3 states have internal predecessors, (270), 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 330 [2024-11-27 20:23:45,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:45,478 INFO L225 Difference]: With dead ends: 54964 [2024-11-27 20:23:45,478 INFO L226 Difference]: Without dead ends: 30539 [2024-11-27 20:23:45,490 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 [2024-11-27 20:23:45,491 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 350 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 1358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:45,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 82 Invalid, 1358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-27 20:23:45,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30539 states. [2024-11-27 20:23:45,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30539 to 28298. [2024-11-27 20:23:45,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28298 states, 28297 states have (on average 1.099763225783652) internal successors, (31120), 28297 states have internal predecessors, (31120), 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) [2024-11-27 20:23:45,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28298 states to 28298 states and 31120 transitions. [2024-11-27 20:23:45,943 INFO L78 Accepts]: Start accepts. Automaton has 28298 states and 31120 transitions. Word has length 330 [2024-11-27 20:23:45,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:45,943 INFO L471 AbstractCegarLoop]: Abstraction has 28298 states and 31120 transitions. [2024-11-27 20:23:45,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.5) internal successors, (270), 3 states have internal predecessors, (270), 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) [2024-11-27 20:23:45,944 INFO L276 IsEmpty]: Start isEmpty. Operand 28298 states and 31120 transitions. [2024-11-27 20:23:45,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2024-11-27 20:23:45,976 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:45,977 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:45,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 20:23:45,977 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:45,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:45,978 INFO L85 PathProgramCache]: Analyzing trace with hash -427811092, now seen corresponding path program 1 times [2024-11-27 20:23:45,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:45,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943911304] [2024-11-27 20:23:45,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:45,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:46,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:46,520 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 109 proven. 6 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2024-11-27 20:23:46,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:46,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943911304] [2024-11-27 20:23:46,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943911304] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:46,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444225817] [2024-11-27 20:23:46,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:46,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:46,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:46,522 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:23:46,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:23:46,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:46,740 INFO L256 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:23:46,745 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:46,841 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 269 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-27 20:23:46,841 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:23:46,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444225817] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:46,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:23:46,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-27 20:23:46,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674989510] [2024-11-27 20:23:46,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:46,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:23:46,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:46,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:23:46,844 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:23:46,844 INFO L87 Difference]: Start difference. First operand 28298 states and 31120 transitions. Second operand has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 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) [2024-11-27 20:23:47,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:47,894 INFO L93 Difference]: Finished difference Result 69623 states and 76776 transitions. [2024-11-27 20:23:47,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:23:47,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 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 342 [2024-11-27 20:23:47,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:47,941 INFO L225 Difference]: With dead ends: 69623 [2024-11-27 20:23:47,941 INFO L226 Difference]: Without dead ends: 41327 [2024-11-27 20:23:47,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:23:47,956 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 194 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:47,957 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 101 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 20:23:47,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41327 states. [2024-11-27 20:23:48,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41327 to 40913. [2024-11-27 20:23:48,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40913 states, 40912 states have (on average 1.0940555338287055) internal successors, (44760), 40912 states have internal predecessors, (44760), 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) [2024-11-27 20:23:48,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40913 states to 40913 states and 44760 transitions. [2024-11-27 20:23:48,497 INFO L78 Accepts]: Start accepts. Automaton has 40913 states and 44760 transitions. Word has length 342 [2024-11-27 20:23:48,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:48,497 INFO L471 AbstractCegarLoop]: Abstraction has 40913 states and 44760 transitions. [2024-11-27 20:23:48,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 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) [2024-11-27 20:23:48,497 INFO L276 IsEmpty]: Start isEmpty. Operand 40913 states and 44760 transitions. [2024-11-27 20:23:48,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2024-11-27 20:23:48,521 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:48,521 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-27 20:23:48,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 20:23:48,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-27 20:23:48,722 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:48,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:48,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1469765734, now seen corresponding path program 1 times [2024-11-27 20:23:48,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:48,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838914876] [2024-11-27 20:23:48,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:48,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:49,129 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 342 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 20:23:49,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:49,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838914876] [2024-11-27 20:23:49,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838914876] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:49,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:23:49,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:23:49,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135882752] [2024-11-27 20:23:49,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:49,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:23:49,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:49,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:23:49,131 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:23:49,131 INFO L87 Difference]: Start difference. First operand 40913 states and 44760 transitions. Second operand has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2024-11-27 20:23:50,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:50,868 INFO L93 Difference]: Finished difference Result 82867 states and 90669 transitions. [2024-11-27 20:23:50,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:23:50,868 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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 385 [2024-11-27 20:23:50,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:50,903 INFO L225 Difference]: With dead ends: 82867 [2024-11-27 20:23:50,903 INFO L226 Difference]: Without dead ends: 39723 [2024-11-27 20:23:50,921 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 [2024-11-27 20:23:50,921 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 380 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:50,922 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 91 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-27 20:23:50,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39723 states. [2024-11-27 20:23:51,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39723 to 33189. [2024-11-27 20:23:51,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33189 states, 33188 states have (on average 1.064360612269495) internal successors, (35324), 33188 states have internal predecessors, (35324), 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) [2024-11-27 20:23:51,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33189 states to 33189 states and 35324 transitions. [2024-11-27 20:23:51,299 INFO L78 Accepts]: Start accepts. Automaton has 33189 states and 35324 transitions. Word has length 385 [2024-11-27 20:23:51,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:51,299 INFO L471 AbstractCegarLoop]: Abstraction has 33189 states and 35324 transitions. [2024-11-27 20:23:51,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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) [2024-11-27 20:23:51,299 INFO L276 IsEmpty]: Start isEmpty. Operand 33189 states and 35324 transitions. [2024-11-27 20:23:51,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2024-11-27 20:23:51,321 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:51,321 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 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] [2024-11-27 20:23:51,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-27 20:23:51,322 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:51,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:51,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1372203317, now seen corresponding path program 1 times [2024-11-27 20:23:51,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:51,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007073833] [2024-11-27 20:23:51,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:51,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:51,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:52,114 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 449 proven. 18 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-27 20:23:52,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:52,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007073833] [2024-11-27 20:23:52,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007073833] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:52,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804638949] [2024-11-27 20:23:52,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:52,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:52,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:52,120 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:23:52,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 20:23:52,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:52,437 INFO L256 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:23:52,444 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:52,788 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 346 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-11-27 20:23:52,788 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:23:52,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804638949] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:52,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:23:52,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-27 20:23:52,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544751140] [2024-11-27 20:23:52,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:52,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:23:52,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:52,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:23:52,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:23:52,790 INFO L87 Difference]: Start difference. First operand 33189 states and 35324 transitions. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 2 states have internal predecessors, (297), 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) [2024-11-27 20:23:53,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:53,272 INFO L93 Difference]: Finished difference Result 97306 states and 103571 transitions. [2024-11-27 20:23:53,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:23:53,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 2 states have internal predecessors, (297), 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 436 [2024-11-27 20:23:53,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:53,327 INFO L225 Difference]: With dead ends: 97306 [2024-11-27 20:23:53,327 INFO L226 Difference]: Without dead ends: 64119 [2024-11-27 20:23:53,347 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:23:53,348 INFO L435 NwaCegarLoop]: 251 mSDtfsCounter, 166 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:53,348 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 484 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:23:53,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64119 states. [2024-11-27 20:23:54,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64119 to 63098. [2024-11-27 20:23:54,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63098 states, 63097 states have (on average 1.0639016118040476) internal successors, (67129), 63097 states have internal predecessors, (67129), 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) [2024-11-27 20:23:54,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63098 states to 63098 states and 67129 transitions. [2024-11-27 20:23:54,441 INFO L78 Accepts]: Start accepts. Automaton has 63098 states and 67129 transitions. Word has length 436 [2024-11-27 20:23:54,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:54,441 INFO L471 AbstractCegarLoop]: Abstraction has 63098 states and 67129 transitions. [2024-11-27 20:23:54,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 2 states have internal predecessors, (297), 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) [2024-11-27 20:23:54,442 INFO L276 IsEmpty]: Start isEmpty. Operand 63098 states and 67129 transitions. [2024-11-27 20:23:54,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2024-11-27 20:23:54,502 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:54,502 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-27 20:23:54,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 20:23:54,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:54,703 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:54,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:54,703 INFO L85 PathProgramCache]: Analyzing trace with hash 104892774, now seen corresponding path program 1 times [2024-11-27 20:23:54,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:54,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606086629] [2024-11-27 20:23:54,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:54,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:55,349 INFO L134 CoverageAnalysis]: Checked inductivity of 622 backedges. 531 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-27 20:23:55,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:55,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606086629] [2024-11-27 20:23:55,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606086629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:55,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:23:55,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:23:55,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846536071] [2024-11-27 20:23:55,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:55,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:23:55,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:55,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:23:55,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:23:55,351 INFO L87 Difference]: Start difference. First operand 63098 states and 67129 transitions. Second operand has 4 states, 4 states have (on average 99.0) internal successors, (396), 3 states have internal predecessors, (396), 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) [2024-11-27 20:23:56,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:56,655 INFO L93 Difference]: Finished difference Result 168916 states and 179814 transitions. [2024-11-27 20:23:56,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:23:56,655 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 99.0) internal successors, (396), 3 states have internal predecessors, (396), 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 485 [2024-11-27 20:23:56,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:56,657 INFO L225 Difference]: With dead ends: 168916 [2024-11-27 20:23:56,657 INFO L226 Difference]: Without dead ends: 0 [2024-11-27 20:23:56,682 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 [2024-11-27 20:23:56,683 INFO L435 NwaCegarLoop]: 215 mSDtfsCounter, 287 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:56,683 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 438 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 20:23:56,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-27 20:23:56,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-27 20:23:56,684 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) [2024-11-27 20:23:56,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-27 20:23:56,685 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 485 [2024-11-27 20:23:56,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:56,685 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-27 20:23:56,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.0) internal successors, (396), 3 states have internal predecessors, (396), 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) [2024-11-27 20:23:56,686 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-27 20:23:56,686 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-27 20:23:56,689 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-27 20:23:56,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-27 20:23:56,697 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:56,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-27 20:24:08,410 WARN L286 SmtUtils]: Spent 11.70s on a formula simplification. DAG size of input: 608 DAG size of output: 552 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-11-27 20:24:16,823 WARN L286 SmtUtils]: Spent 8.41s on a formula simplification. DAG size of input: 552 DAG size of output: 83 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-11-27 20:24:16,830 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-27 20:24:16,884 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 08:24:16 BoogieIcfgContainer [2024-11-27 20:24:16,884 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-27 20:24:16,885 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 20:24:16,887 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 20:24:16,887 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 20:24:16,888 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:23:08" (3/4) ... [2024-11-27 20:24:16,892 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-27 20:24:16,927 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-27 20:24:16,929 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-27 20:24:16,931 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-27 20:24:16,934 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-27 20:24:17,203 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-27 20:24:17,203 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-27 20:24:17,203 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 20:24:17,205 INFO L158 Benchmark]: Toolchain (without parser) took 73444.25ms. Allocated memory was 117.4MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 86.5MB in the beginning and 758.7MB in the end (delta: -672.3MB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2024-11-27 20:24:17,205 INFO L158 Benchmark]: CDTParser took 1.29ms. Allocated memory is still 117.4MB. Free memory is still 72.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:24:17,206 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1075.83ms. Allocated memory was 117.4MB in the beginning and 192.9MB in the end (delta: 75.5MB). Free memory was 86.5MB in the beginning and 157.5MB in the end (delta: -71.1MB). Peak memory consumption was 68.8MB. Max. memory is 16.1GB. [2024-11-27 20:24:17,206 INFO L158 Benchmark]: Boogie Procedure Inliner took 162.28ms. Allocated memory is still 192.9MB. Free memory was 157.4MB in the beginning and 143.1MB in the end (delta: 14.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 20:24:17,207 INFO L158 Benchmark]: Boogie Preprocessor took 206.18ms. Allocated memory is still 192.9MB. Free memory was 143.0MB in the beginning and 131.0MB in the end (delta: 12.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 20:24:17,208 INFO L158 Benchmark]: RCFGBuilder took 2980.67ms. Allocated memory is still 192.9MB. Free memory was 130.9MB in the beginning and 77.3MB in the end (delta: 53.6MB). Peak memory consumption was 101.7MB. Max. memory is 16.1GB. [2024-11-27 20:24:17,208 INFO L158 Benchmark]: TraceAbstraction took 68693.69ms. Allocated memory was 192.9MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 77.3MB in the beginning and 779.7MB in the end (delta: -702.4MB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2024-11-27 20:24:17,208 INFO L158 Benchmark]: Witness Printer took 318.65ms. Allocated memory is still 2.2GB. Free memory was 779.7MB in the beginning and 758.7MB in the end (delta: 21.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 20:24:17,213 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.29ms. Allocated memory is still 117.4MB. Free memory is still 72.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1075.83ms. Allocated memory was 117.4MB in the beginning and 192.9MB in the end (delta: 75.5MB). Free memory was 86.5MB in the beginning and 157.5MB in the end (delta: -71.1MB). Peak memory consumption was 68.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 162.28ms. Allocated memory is still 192.9MB. Free memory was 157.4MB in the beginning and 143.1MB in the end (delta: 14.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 206.18ms. Allocated memory is still 192.9MB. Free memory was 143.0MB in the beginning and 131.0MB in the end (delta: 12.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * RCFGBuilder took 2980.67ms. Allocated memory is still 192.9MB. Free memory was 130.9MB in the beginning and 77.3MB in the end (delta: 53.6MB). Peak memory consumption was 101.7MB. Max. memory is 16.1GB. * TraceAbstraction took 68693.69ms. Allocated memory was 192.9MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 77.3MB in the beginning and 779.7MB in the end (delta: -702.4MB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. * Witness Printer took 318.65ms. Allocated memory is still 2.2GB. Free memory was 779.7MB in the beginning and 758.7MB in the end (delta: 21.0MB). 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: 1546]: 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, 302 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 48.4s, OverallIterations: 20, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.5s, AutomataDifference: 25.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4295 SdHoareTripleChecker+Valid, 21.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4295 mSDsluCounter, 4376 SdHoareTripleChecker+Invalid, 17.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 848 mSDsCounter, 2477 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12447 IncrementalHoareTripleChecker+Invalid, 14924 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2477 mSolverCounterUnsat, 3528 mSDtfsCounter, 12447 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2151 GetRequests, 2112 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63098occurred in iteration=19, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.0s AutomataMinimizationTime, 20 MinimizatonAttempts, 17821 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 10.9s InterpolantComputationTime, 7727 NumberOfCodeBlocks, 7727 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 7700 ConstructedInterpolants, 0 QuantifiedInterpolants, 15299 SizeOfPredicates, 0 NumberOfNonLiveVariables, 3920 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 27 InterpolantComputations, 20 PerfectInterpolantSequences, 5195/5249 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: 1668]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((a15 == 1) && (a26 == 1)) && (a5 == 1)) && (a12 == 1)) && (a11 == 1)) && (a3 == 1)) && (a6 == 1)) && (a27 == 1)) || ((((((a26 == 1) && (a5 == 1)) && (a12 == 1)) && (a11 == 1)) && (a6 == 1)) && (a3 == 0))) || (((((((a26 == 1) && (a5 == 1)) && (a12 == 1)) && (a11 == 1)) && (a27 == 1)) && (a3 == 0)) && (a6 <= 0))) || (((((((a5 == 1) && (1 <= a3)) && (a26 <= 0)) && (a11 == 1)) && (a23 <= 0)) && (a27 == 1)) && (a6 <= 0))) || (((((a26 == 1) && (a5 == 1)) && (a3 == 1)) && (a6 == 1)) && (a11 <= 0))) || ((((((a5 == 1) && (a11 == 1)) && (a6 == 1)) && (a12 <= 0)) && (a27 == 1)) && (a3 == 0))) || (((((((a26 == 1) && (a5 == 1)) && (a16 == 1)) && (a11 == 1)) && (a6 == 1)) && (a27 == 1)) && (a3 == 0))) || (((((((a26 == 1) && (a5 == 1)) && (a12 == 1)) && (a16 == 1)) && (a11 <= 0)) && (a3 == 0)) && (a6 <= 0))) || ((((((((a15 == 1) && (a26 == 1)) && (a5 == 1)) && (1 <= a3)) && (a16 == 1)) && (a11 <= 0)) && (a27 == 1)) && (a6 <= 0))) || ((((((a26 == 1) && (a5 == 1)) && (1 <= a3)) && (a16 == 1)) && (a11 == 1)) && (a6 == 1))) || ((((((a26 == 1) && (a5 == 1)) && (a12 == 1)) && (1 <= a3)) && (a11 == 1)) && (a6 <= 0))) || ((((((a26 == 1) && (a5 == 1)) && (a12 == 1)) && (1 <= a3)) && (a11 <= 0)) && (a6 <= 0))) || ((((((a5 == 1) && (1 <= a3)) && (a23 <= 0)) && (a6 == 1)) && (a11 <= 0)) && (a27 == 1))) || (((((a5 == 1) && (a26 <= 0)) && (a3 == 1)) && (a11 <= 0)) && (a6 <= 0))) || (((((((a26 == 1) && (a5 == 1)) && (a11 == 1)) && (a23 <= 0)) && (a6 == 1)) && (a27 == 1)) && (a3 == 0))) || (((((((a5 == 1) && (1 <= a3)) && (a16 == 1)) && (a26 <= 0)) && (a11 <= 0)) && (a27 == 1)) && (a6 <= 0))) || (((((((a26 == 1) && (a5 == 1)) && (1 <= a3)) && (a11 == 1)) && (a12 <= 0)) && (a27 == 1)) && (a6 <= 0))) || (((((((a26 == 1) && (a5 == 1)) && (a12 == 1)) && (a16 == 1)) && (a11 == 1)) && (a3 == 0)) && (a6 <= 0))) || ((((((a5 == 1) && (1 <= a3)) && (a11 == 1)) && (a6 == 1)) && (a12 <= 0)) && (a27 == 1))) || ((((((a26 == 1) && (a5 == 1)) && (a11 == 1)) && (a23 <= 0)) && (a3 == 1)) && (a6 <= 0))) || ((((((((a15 == 1) && (a5 == 1)) && (a12 == 1)) && (a11 == 1)) && (a23 <= 0)) && (a6 == 1)) && (a27 == 1)) && (a3 == 0))) || (((((((a5 == 1) && (1 <= a3)) && (a26 <= 0)) && (a23 <= 0)) && (a11 <= 0)) && (a27 == 1)) && (a6 <= 0))) || ((((((a5 == 1) && (1 <= a3)) && (a26 <= 0)) && (a11 == 1)) && (a12 <= 0)) && (a6 <= 0))) || (((((a26 == 1) && (a5 == 1)) && (a6 == 1)) && (a11 <= 0)) && (a3 == 0))) || (((((((a5 == 1) && (a12 == 1)) && (1 <= a3)) && (a16 == 1)) && (a26 <= 0)) && (a6 == 1)) && (a11 <= 0))) || (((((((a26 == 1) && (a5 == 1)) && (a12 == 1)) && (a11 == 1)) && (a23 <= 0)) && (a3 == 0)) && (a6 <= 0))) || ((((((a26 == 1) && (a5 == 1)) && (a12 == 1)) && (1 <= a3)) && (a6 == 1)) && (a11 <= 0))) || (((((((a15 == 1) && (a5 == 1)) && (a11 <= 0)) && (a12 <= 0)) && (a27 == 1)) && (a3 == 0)) && (a6 <= 0))) || (((((((a26 == 1) && (a5 == 1)) && (1 <= a3)) && (a16 == 1)) && (a11 == 1)) && (a27 == 1)) && (a6 <= 0))) || ((((((a26 == 1) && (a5 == 1)) && (1 <= a3)) && (a16 == 1)) && (a6 == 1)) && (a11 <= 0))) || ((((((a26 == 1) && (a5 == 1)) && (1 <= a3)) && (a11 == 1)) && (a6 == 1)) && (a12 <= 0))) || (((((((a26 == 1) && (a5 == 1)) && (1 <= a3)) && (a11 == 1)) && (a23 <= 0)) && (a27 == 1)) && (a6 <= 0))) || ((((((a5 == 1) && (1 <= a3)) && (a26 <= 0)) && (a6 == 1)) && (a11 <= 0)) && (a12 <= 0))) || ((((((a5 == 1) && (1 <= a3)) && (a26 <= 0)) && (a23 <= 0)) && (a6 == 1)) && (a11 <= 0))) || (((((((a5 == 1) && (1 <= a3)) && (a26 <= 0)) && (a11 <= 0)) && (a12 <= 0)) && (a27 == 1)) && (a6 <= 0))) || ((((((a5 == 1) && (a11 == 1)) && (a12 <= 0)) && (a27 == 1)) && (a3 == 0)) && (a6 <= 0))) || ((((((a26 == 1) && (a5 == 1)) && (1 <= a3)) && (a6 == 1)) && (a11 <= 0)) && (a12 <= 0))) || (((((((a5 == 1) && (a12 == 1)) && (1 <= a3)) && (a16 == 1)) && (a11 == 1)) && (a6 == 1)) && (a27 == 1))) || ((((((a5 == 1) && (1 <= a3)) && (a6 == 1)) && (a11 <= 0)) && (a12 <= 0)) && (a27 == 1))) || (((((((a26 == 1) && (a5 == 1)) && (a12 == 1)) && (a11 <= 0)) && (a27 == 1)) && (a3 == 0)) && (a6 <= 0))) || ((((((((a15 == 1) && (a26 == 1)) && (a5 == 1)) && (1 <= a3)) && (a11 <= 0)) && (a12 <= 0)) && (a27 == 1)) && (a6 <= 0))) || (((((((a5 == 1) && (a12 == 1)) && (a16 == 1)) && (a26 <= 0)) && (a11 == 1)) && (a3 == 1)) && (a6 == 1))) || (((((a26 == 1) && (a5 == 1)) && (a3 == 1)) && (a11 <= 0)) && (a6 <= 0))) || ((((((a26 == 1) && (a5 == 1)) && (1 <= a3)) && (a23 <= 0)) && (a6 == 1)) && (a11 <= 0))) || (((((((a5 == 1) && (a12 == 1)) && (1 <= a3)) && (a26 <= 0)) && (a11 <= 0)) && (a27 == 1)) && (a6 <= 0))) || ((((((((a15 == 1) && (a26 == 1)) && (a5 == 1)) && (1 <= a3)) && (a23 <= 0)) && (a11 <= 0)) && (a27 == 1)) && (a6 <= 0))) || (((((((a5 == 1) && (1 <= a3)) && (a16 == 1)) && (a26 <= 0)) && (a11 == 1)) && (a27 == 1)) && (a6 <= 0))) || ((((((a5 == 1) && (a12 == 1)) && (a16 == 1)) && (a6 == 1)) && (a11 <= 0)) && (a3 == 0))) || (((((((a26 == 1) && (a5 == 1)) && (a16 == 1)) && (a11 == 1)) && (a12 <= 0)) && (a3 == 0)) && (a6 <= 0))) || ((((((a5 == 1) && (a6 == 1)) && (a11 <= 0)) && (a12 <= 0)) && (a27 == 1)) && (a3 == 0))) || ((((((a26 == 1) && (a5 == 1)) && (a11 == 1)) && (a6 == 1)) && (a12 <= 0)) && (a3 == 0))) || ((((((a5 == 1) && (1 <= a3)) && (a16 == 1)) && (a6 == 1)) && (a11 <= 0)) && (a27 == 1))) || (((((a5 == 1) && (a26 <= 0)) && (a11 <= 0)) && (a3 == 0)) && (a6 <= 0))) || ((((((a26 == 1) && (a5 == 1)) && (1 <= a3)) && (a11 == 1)) && (a23 <= 0)) && (a6 == 1))) RESULT: Ultimate proved your program to be correct! [2024-11-27 20:24:17,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e2a9690-6b26-4640-ba9d-38bea221b54a/bin/uautomizer-verify-aQ6SnzHsRB/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