./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.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_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1 --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 74d57b3f1e9a386b0ff6bac396d798184771ae1b1b0bb917f750fc3ebefb1c2f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 07:05:17,863 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 07:05:17,924 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 07:05:17,928 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 07:05:17,928 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 07:05:17,950 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 07:05:17,950 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 07:05:17,951 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 07:05:17,951 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 07:05:17,951 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 07:05:17,951 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 07:05:17,951 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 07:05:17,952 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 07:05:17,952 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 07:05:17,952 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 07:05:17,952 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 07:05:17,952 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 07:05:17,952 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 07:05:17,952 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 07:05:17,953 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 07:05:17,953 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 07:05:17,953 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 07:05:17,953 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 07:05:17,953 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 07:05:17,953 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 07:05:17,953 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 07:05:17,953 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 07:05:17,953 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 07:05:17,954 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 07:05:17,954 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:05:17,954 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:05:17,954 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:05:17,954 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:05:17,954 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 07:05:17,954 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:05:17,954 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:05:17,954 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:05:17,954 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:05:17,955 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 07:05:17,955 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 07:05:17,955 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 07:05:17,955 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 07:05:17,955 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 07:05:17,955 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 07:05:17,955 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 07:05:17,955 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 07:05:17,955 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 07:05:17,956 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 07:05:17,956 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_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1 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 -> 74d57b3f1e9a386b0ff6bac396d798184771ae1b1b0bb917f750fc3ebefb1c2f [2024-12-02 07:05:18,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 07:05:18,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 07:05:18,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 07:05:18,190 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 07:05:18,190 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 07:05:18,192 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2024-12-02 07:05:20,866 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/data/6fedd9dba/39efde3ad97544fea1cdb6e7f9d6a638/FLAGe66ef3548 [2024-12-02 07:05:21,088 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 07:05:21,089 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2024-12-02 07:05:21,099 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/data/6fedd9dba/39efde3ad97544fea1cdb6e7f9d6a638/FLAGe66ef3548 [2024-12-02 07:05:21,415 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/data/6fedd9dba/39efde3ad97544fea1cdb6e7f9d6a638 [2024-12-02 07:05:21,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 07:05:21,419 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 07:05:21,420 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 07:05:21,420 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 07:05:21,423 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 07:05:21,424 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:05:21" (1/1) ... [2024-12-02 07:05:21,424 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69376cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:21, skipping insertion in model container [2024-12-02 07:05:21,424 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:05:21" (1/1) ... [2024-12-02 07:05:21,450 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 07:05:21,652 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_b25b47b5-5312-432d-ad50-d528ed2b41fe/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[6874,6887] [2024-12-02 07:05:21,666 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_b25b47b5-5312-432d-ad50-d528ed2b41fe/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9049,9062] [2024-12-02 07:05:21,675 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:05:21,689 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 07:05:21,737 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_b25b47b5-5312-432d-ad50-d528ed2b41fe/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[6874,6887] [2024-12-02 07:05:21,744 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_b25b47b5-5312-432d-ad50-d528ed2b41fe/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9049,9062] [2024-12-02 07:05:21,751 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:05:21,768 INFO L204 MainTranslator]: Completed translation [2024-12-02 07:05:21,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:21 WrapperNode [2024-12-02 07:05:21,769 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 07:05:21,770 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 07:05:21,770 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 07:05:21,770 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 07:05:21,777 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:21" (1/1) ... [2024-12-02 07:05:21,787 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:21" (1/1) ... [2024-12-02 07:05:21,814 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 483 [2024-12-02 07:05:21,815 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 07:05:21,815 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 07:05:21,815 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 07:05:21,815 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 07:05:21,825 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:21" (1/1) ... [2024-12-02 07:05:21,825 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:21" (1/1) ... [2024-12-02 07:05:21,828 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:21" (1/1) ... [2024-12-02 07:05:21,845 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]. [2024-12-02 07:05:21,845 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:21" (1/1) ... [2024-12-02 07:05:21,845 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:21" (1/1) ... [2024-12-02 07:05:21,853 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:21" (1/1) ... [2024-12-02 07:05:21,854 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:21" (1/1) ... [2024-12-02 07:05:21,858 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:21" (1/1) ... [2024-12-02 07:05:21,860 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:21" (1/1) ... [2024-12-02 07:05:21,862 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:21" (1/1) ... [2024-12-02 07:05:21,865 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 07:05:21,866 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 07:05:21,866 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 07:05:21,866 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 07:05:21,867 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:21" (1/1) ... [2024-12-02 07:05:21,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:05:21,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:05:21,900 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 07:05:21,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 07:05:21,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 07:05:21,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 07:05:21,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 07:05:21,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 07:05:22,031 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 07:05:22,032 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 07:05:22,436 INFO L? ?]: Removed 66 outVars from TransFormulas that were not future-live. [2024-12-02 07:05:22,436 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 07:05:22,448 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 07:05:22,448 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-02 07:05:22,448 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:05:22 BoogieIcfgContainer [2024-12-02 07:05:22,448 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 07:05:22,451 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 07:05:22,451 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 07:05:22,456 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 07:05:22,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:05:21" (1/3) ... [2024-12-02 07:05:22,457 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e07533c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:05:22, skipping insertion in model container [2024-12-02 07:05:22,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:21" (2/3) ... [2024-12-02 07:05:22,457 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e07533c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:05:22, skipping insertion in model container [2024-12-02 07:05:22,458 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:05:22" (3/3) ... [2024-12-02 07:05:22,459 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2024-12-02 07:05:22,475 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 07:05:22,476 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c that has 1 procedures, 106 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2024-12-02 07:05:22,531 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:05:22,542 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;@24d22c8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:05:22,542 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-02 07:05:22,546 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 103 states have (on average 1.7475728155339805) internal successors, (180), 105 states have internal predecessors, (180), 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) [2024-12-02 07:05:22,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-12-02 07:05:22,553 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:05:22,554 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] [2024-12-02 07:05:22,554 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:05:22,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:05:22,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1096512752, now seen corresponding path program 1 times [2024-12-02 07:05:22,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:05:22,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027636627] [2024-12-02 07:05:22,566 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:22,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:05:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:22,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:22,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:05:22,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027636627] [2024-12-02 07:05:22,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027636627] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:05:22,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:05:22,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 07:05:22,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627893993] [2024-12-02 07:05:22,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:05:22,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:05:22,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:05:23,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:05:23,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:05:23,005 INFO L87 Difference]: Start difference. First operand has 106 states, 103 states have (on average 1.7475728155339805) internal successors, (180), 105 states have internal predecessors, (180), 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 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2024-12-02 07:05:23,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:05:23,231 INFO L93 Difference]: Finished difference Result 422 states and 668 transitions. [2024-12-02 07:05:23,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:05:23,233 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 47 [2024-12-02 07:05:23,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:05:23,242 INFO L225 Difference]: With dead ends: 422 [2024-12-02 07:05:23,242 INFO L226 Difference]: Without dead ends: 358 [2024-12-02 07:05:23,245 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:05:23,248 INFO L435 NwaCegarLoop]: 292 mSDtfsCounter, 596 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:05:23,248 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 775 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:05:23,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2024-12-02 07:05:23,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 156. [2024-12-02 07:05:23,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 154 states have (on average 1.4415584415584415) internal successors, (222), 155 states have internal predecessors, (222), 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) [2024-12-02 07:05:23,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 222 transitions. [2024-12-02 07:05:23,292 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 222 transitions. Word has length 47 [2024-12-02 07:05:23,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:05:23,292 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 222 transitions. [2024-12-02 07:05:23,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2024-12-02 07:05:23,293 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 222 transitions. [2024-12-02 07:05:23,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-12-02 07:05:23,294 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:05:23,294 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] [2024-12-02 07:05:23,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 07:05:23,294 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:05:23,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:05:23,295 INFO L85 PathProgramCache]: Analyzing trace with hash 191283016, now seen corresponding path program 1 times [2024-12-02 07:05:23,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:05:23,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390141469] [2024-12-02 07:05:23,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:23,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:05:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:23,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:23,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:05:23,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390141469] [2024-12-02 07:05:23,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390141469] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:05:23,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:05:23,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:05:23,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543422243] [2024-12-02 07:05:23,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:05:23,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:05:23,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:05:23,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:05:23,390 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:05:23,391 INFO L87 Difference]: Start difference. First operand 156 states and 222 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-12-02 07:05:23,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:05:23,447 INFO L93 Difference]: Finished difference Result 247 states and 359 transitions. [2024-12-02 07:05:23,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:05:23,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2024-12-02 07:05:23,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:05:23,449 INFO L225 Difference]: With dead ends: 247 [2024-12-02 07:05:23,450 INFO L226 Difference]: Without dead ends: 160 [2024-12-02 07:05:23,450 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 [2024-12-02 07:05:23,451 INFO L435 NwaCegarLoop]: 199 mSDtfsCounter, 75 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:05:23,451 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 305 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:05:23,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-12-02 07:05:23,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2024-12-02 07:05:23,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 156 states have (on average 1.4294871794871795) internal successors, (223), 157 states have internal predecessors, (223), 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) [2024-12-02 07:05:23,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 223 transitions. [2024-12-02 07:05:23,476 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 223 transitions. Word has length 48 [2024-12-02 07:05:23,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:05:23,477 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 223 transitions. [2024-12-02 07:05:23,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-12-02 07:05:23,477 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 223 transitions. [2024-12-02 07:05:23,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-12-02 07:05:23,478 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:05:23,478 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] [2024-12-02 07:05:23,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 07:05:23,479 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:05:23,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:05:23,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1589815569, now seen corresponding path program 1 times [2024-12-02 07:05:23,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:05:23,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448666579] [2024-12-02 07:05:23,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:23,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:05:23,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:23,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:23,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:05:23,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448666579] [2024-12-02 07:05:23,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448666579] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:05:23,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:05:23,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 07:05:23,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753699502] [2024-12-02 07:05:23,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:05:23,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:05:23,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:05:23,618 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:05:23,618 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:05:23,618 INFO L87 Difference]: Start difference. First operand 158 states and 223 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-12-02 07:05:23,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:05:23,727 INFO L93 Difference]: Finished difference Result 478 states and 707 transitions. [2024-12-02 07:05:23,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:05:23,728 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 49 [2024-12-02 07:05:23,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:05:23,730 INFO L225 Difference]: With dead ends: 478 [2024-12-02 07:05:23,730 INFO L226 Difference]: Without dead ends: 394 [2024-12-02 07:05:23,731 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:05:23,732 INFO L435 NwaCegarLoop]: 262 mSDtfsCounter, 303 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:05:23,732 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 542 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:05:23,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2024-12-02 07:05:23,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 251. [2024-12-02 07:05:23,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 249 states have (on average 1.4698795180722892) internal successors, (366), 250 states have internal predecessors, (366), 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) [2024-12-02 07:05:23,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 366 transitions. [2024-12-02 07:05:23,746 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 366 transitions. Word has length 49 [2024-12-02 07:05:23,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:05:23,746 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 366 transitions. [2024-12-02 07:05:23,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-12-02 07:05:23,747 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 366 transitions. [2024-12-02 07:05:23,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-12-02 07:05:23,748 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:05:23,748 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] [2024-12-02 07:05:23,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 07:05:23,748 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:05:23,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:05:23,749 INFO L85 PathProgramCache]: Analyzing trace with hash 727047131, now seen corresponding path program 1 times [2024-12-02 07:05:23,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:05:23,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523090406] [2024-12-02 07:05:23,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:23,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:05:23,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:23,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:23,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:05:23,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523090406] [2024-12-02 07:05:23,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523090406] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:05:23,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:05:23,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 07:05:23,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062256918] [2024-12-02 07:05:23,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:05:23,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:05:23,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:05:23,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:05:23,874 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:05:23,874 INFO L87 Difference]: Start difference. First operand 251 states and 366 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-12-02 07:05:23,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:05:23,981 INFO L93 Difference]: Finished difference Result 566 states and 842 transitions. [2024-12-02 07:05:23,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:05:23,982 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 49 [2024-12-02 07:05:23,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:05:23,984 INFO L225 Difference]: With dead ends: 566 [2024-12-02 07:05:23,984 INFO L226 Difference]: Without dead ends: 482 [2024-12-02 07:05:23,985 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:05:23,986 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 363 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:05:23,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 547 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:05:23,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2024-12-02 07:05:24,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 382. [2024-12-02 07:05:24,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 380 states have (on average 1.4894736842105263) internal successors, (566), 381 states have internal predecessors, (566), 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) [2024-12-02 07:05:24,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 566 transitions. [2024-12-02 07:05:24,017 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 566 transitions. Word has length 49 [2024-12-02 07:05:24,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:05:24,018 INFO L471 AbstractCegarLoop]: Abstraction has 382 states and 566 transitions. [2024-12-02 07:05:24,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-12-02 07:05:24,018 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 566 transitions. [2024-12-02 07:05:24,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-12-02 07:05:24,019 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:05:24,019 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] [2024-12-02 07:05:24,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 07:05:24,019 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:05:24,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:05:24,020 INFO L85 PathProgramCache]: Analyzing trace with hash 118541383, now seen corresponding path program 1 times [2024-12-02 07:05:24,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:05:24,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222504685] [2024-12-02 07:05:24,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:24,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:05:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:24,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:24,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:05:24,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222504685] [2024-12-02 07:05:24,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222504685] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:05:24,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:05:24,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 07:05:24,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466646337] [2024-12-02 07:05:24,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:05:24,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:05:24,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:05:24,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:05:24,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:05:24,164 INFO L87 Difference]: Start difference. First operand 382 states and 566 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-12-02 07:05:24,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:05:24,286 INFO L93 Difference]: Finished difference Result 659 states and 985 transitions. [2024-12-02 07:05:24,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:05:24,286 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 49 [2024-12-02 07:05:24,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:05:24,289 INFO L225 Difference]: With dead ends: 659 [2024-12-02 07:05:24,289 INFO L226 Difference]: Without dead ends: 575 [2024-12-02 07:05:24,289 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:05:24,290 INFO L435 NwaCegarLoop]: 227 mSDtfsCounter, 360 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:05:24,290 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 581 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:05:24,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2024-12-02 07:05:24,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 475. [2024-12-02 07:05:24,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 473 states have (on average 1.4989429175475688) internal successors, (709), 474 states have internal predecessors, (709), 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) [2024-12-02 07:05:24,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 709 transitions. [2024-12-02 07:05:24,306 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 709 transitions. Word has length 49 [2024-12-02 07:05:24,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:05:24,306 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 709 transitions. [2024-12-02 07:05:24,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2024-12-02 07:05:24,306 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 709 transitions. [2024-12-02 07:05:24,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-12-02 07:05:24,307 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:05:24,307 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] [2024-12-02 07:05:24,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 07:05:24,307 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:05:24,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:05:24,308 INFO L85 PathProgramCache]: Analyzing trace with hash 2078764873, now seen corresponding path program 1 times [2024-12-02 07:05:24,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:05:24,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085264833] [2024-12-02 07:05:24,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:24,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:05:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:24,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:24,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:05:24,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085264833] [2024-12-02 07:05:24,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085264833] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:05:24,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:05:24,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:05:24,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135782233] [2024-12-02 07:05:24,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:05:24,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:05:24,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:05:24,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:05:24,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:05:24,430 INFO L87 Difference]: Start difference. First operand 475 states and 709 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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) [2024-12-02 07:05:24,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:05:24,536 INFO L93 Difference]: Finished difference Result 928 states and 1395 transitions. [2024-12-02 07:05:24,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:05:24,536 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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 50 [2024-12-02 07:05:24,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:05:24,538 INFO L225 Difference]: With dead ends: 928 [2024-12-02 07:05:24,539 INFO L226 Difference]: Without dead ends: 475 [2024-12-02 07:05:24,539 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:05:24,540 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 384 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:05:24,540 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 82 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:05:24,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2024-12-02 07:05:24,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2024-12-02 07:05:24,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 473 states have (on average 1.477801268498943) internal successors, (699), 474 states have internal predecessors, (699), 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) [2024-12-02 07:05:24,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 699 transitions. [2024-12-02 07:05:24,556 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 699 transitions. Word has length 50 [2024-12-02 07:05:24,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:05:24,557 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 699 transitions. [2024-12-02 07:05:24,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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) [2024-12-02 07:05:24,557 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 699 transitions. [2024-12-02 07:05:24,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-12-02 07:05:24,558 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:05:24,558 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] [2024-12-02 07:05:24,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 07:05:24,558 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:05:24,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:05:24,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1832903282, now seen corresponding path program 1 times [2024-12-02 07:05:24,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:05:24,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923179124] [2024-12-02 07:05:24,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:24,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:05:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:24,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:24,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:05:24,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923179124] [2024-12-02 07:05:24,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923179124] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:05:24,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:05:24,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:05:24,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298896768] [2024-12-02 07:05:24,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:05:24,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:05:24,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:05:24,701 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:05:24,701 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:05:24,701 INFO L87 Difference]: Start difference. First operand 475 states and 699 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 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) [2024-12-02 07:05:24,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:05:24,809 INFO L93 Difference]: Finished difference Result 924 states and 1371 transitions. [2024-12-02 07:05:24,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:05:24,810 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 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 51 [2024-12-02 07:05:24,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:05:24,812 INFO L225 Difference]: With dead ends: 924 [2024-12-02 07:05:24,812 INFO L226 Difference]: Without dead ends: 475 [2024-12-02 07:05:24,813 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:05:24,814 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 366 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:05:24,814 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 90 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:05:24,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2024-12-02 07:05:24,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2024-12-02 07:05:24,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 473 states have (on average 1.4566596194503172) internal successors, (689), 474 states have internal predecessors, (689), 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) [2024-12-02 07:05:24,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 689 transitions. [2024-12-02 07:05:24,832 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 689 transitions. Word has length 51 [2024-12-02 07:05:24,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:05:24,832 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 689 transitions. [2024-12-02 07:05:24,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 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) [2024-12-02 07:05:24,833 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 689 transitions. [2024-12-02 07:05:24,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-12-02 07:05:24,833 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:05:24,833 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] [2024-12-02 07:05:24,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 07:05:24,834 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:05:24,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:05:24,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1624812893, now seen corresponding path program 1 times [2024-12-02 07:05:24,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:05:24,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811320669] [2024-12-02 07:05:24,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:24,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:05:24,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:24,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:24,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:05:24,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811320669] [2024-12-02 07:05:24,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811320669] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:05:24,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:05:24,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:05:24,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276025010] [2024-12-02 07:05:24,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:05:24,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:05:24,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:05:24,976 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:05:24,976 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:05:24,976 INFO L87 Difference]: Start difference. First operand 475 states and 689 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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) [2024-12-02 07:05:25,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:05:25,084 INFO L93 Difference]: Finished difference Result 920 states and 1347 transitions. [2024-12-02 07:05:25,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:05:25,085 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 52 [2024-12-02 07:05:25,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:05:25,087 INFO L225 Difference]: With dead ends: 920 [2024-12-02 07:05:25,087 INFO L226 Difference]: Without dead ends: 475 [2024-12-02 07:05:25,088 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:05:25,088 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 348 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:05:25,089 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 98 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:05:25,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2024-12-02 07:05:25,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2024-12-02 07:05:25,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 473 states have (on average 1.4355179704016914) internal successors, (679), 474 states have internal predecessors, (679), 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) [2024-12-02 07:05:25,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 679 transitions. [2024-12-02 07:05:25,106 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 679 transitions. Word has length 52 [2024-12-02 07:05:25,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:05:25,106 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 679 transitions. [2024-12-02 07:05:25,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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) [2024-12-02 07:05:25,107 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 679 transitions. [2024-12-02 07:05:25,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-12-02 07:05:25,107 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:05:25,107 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] [2024-12-02 07:05:25,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 07:05:25,108 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:05:25,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:05:25,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1423750650, now seen corresponding path program 1 times [2024-12-02 07:05:25,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:05:25,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141907865] [2024-12-02 07:05:25,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:25,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:05:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:25,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:25,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:05:25,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141907865] [2024-12-02 07:05:25,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141907865] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:05:25,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:05:25,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 07:05:25,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572534369] [2024-12-02 07:05:25,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:05:25,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 07:05:25,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:05:25,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 07:05:25,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:05:25,589 INFO L87 Difference]: Start difference. First operand 475 states and 679 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 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) [2024-12-02 07:05:25,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:05:25,898 INFO L93 Difference]: Finished difference Result 1286 states and 1863 transitions. [2024-12-02 07:05:25,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 07:05:25,899 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 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 53 [2024-12-02 07:05:25,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:05:25,902 INFO L225 Difference]: With dead ends: 1286 [2024-12-02 07:05:25,902 INFO L226 Difference]: Without dead ends: 873 [2024-12-02 07:05:25,903 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2024-12-02 07:05:25,904 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 717 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:05:25,904 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 334 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 07:05:25,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2024-12-02 07:05:25,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 475. [2024-12-02 07:05:25,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 473 states have (on average 1.4334038054968288) internal successors, (678), 474 states have internal predecessors, (678), 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) [2024-12-02 07:05:25,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 678 transitions. [2024-12-02 07:05:25,924 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 678 transitions. Word has length 53 [2024-12-02 07:05:25,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:05:25,924 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 678 transitions. [2024-12-02 07:05:25,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 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) [2024-12-02 07:05:25,924 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 678 transitions. [2024-12-02 07:05:25,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-12-02 07:05:25,925 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:05:25,925 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] [2024-12-02 07:05:25,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 07:05:25,925 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:05:25,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:05:25,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1451758686, now seen corresponding path program 1 times [2024-12-02 07:05:25,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:05:25,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517464398] [2024-12-02 07:05:25,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:25,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:05:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:26,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:26,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:05:26,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517464398] [2024-12-02 07:05:26,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517464398] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:05:26,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:05:26,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 07:05:26,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495682754] [2024-12-02 07:05:26,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:05:26,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 07:05:26,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:05:26,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 07:05:26,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 07:05:26,311 INFO L87 Difference]: Start difference. First operand 475 states and 678 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 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) [2024-12-02 07:05:26,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:05:26,820 INFO L93 Difference]: Finished difference Result 1314 states and 1896 transitions. [2024-12-02 07:05:26,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 07:05:26,821 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 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 53 [2024-12-02 07:05:26,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:05:26,823 INFO L225 Difference]: With dead ends: 1314 [2024-12-02 07:05:26,823 INFO L226 Difference]: Without dead ends: 906 [2024-12-02 07:05:26,824 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2024-12-02 07:05:26,824 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 540 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:05:26,824 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 710 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 07:05:26,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2024-12-02 07:05:26,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 475. [2024-12-02 07:05:26,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 473 states have (on average 1.4291754756871036) internal successors, (676), 474 states have internal predecessors, (676), 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) [2024-12-02 07:05:26,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 676 transitions. [2024-12-02 07:05:26,836 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 676 transitions. Word has length 53 [2024-12-02 07:05:26,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:05:26,836 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 676 transitions. [2024-12-02 07:05:26,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 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) [2024-12-02 07:05:26,836 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 676 transitions. [2024-12-02 07:05:26,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-12-02 07:05:26,837 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:05:26,837 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] [2024-12-02 07:05:26,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 07:05:26,844 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:05:26,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:05:26,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1755644783, now seen corresponding path program 1 times [2024-12-02 07:05:26,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:05:26,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866930527] [2024-12-02 07:05:26,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:26,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:05:26,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:27,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:27,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:05:27,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866930527] [2024-12-02 07:05:27,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866930527] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:05:27,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:05:27,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 07:05:27,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932295398] [2024-12-02 07:05:27,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:05:27,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 07:05:27,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:05:27,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 07:05:27,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-12-02 07:05:27,085 INFO L87 Difference]: Start difference. First operand 475 states and 676 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 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) [2024-12-02 07:05:27,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:05:27,466 INFO L93 Difference]: Finished difference Result 1299 states and 1870 transitions. [2024-12-02 07:05:27,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 07:05:27,467 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 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 54 [2024-12-02 07:05:27,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:05:27,469 INFO L225 Difference]: With dead ends: 1299 [2024-12-02 07:05:27,469 INFO L226 Difference]: Without dead ends: 901 [2024-12-02 07:05:27,470 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2024-12-02 07:05:27,470 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 701 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:05:27,471 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 403 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 07:05:27,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2024-12-02 07:05:27,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 475. [2024-12-02 07:05:27,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 473 states have (on average 1.4207188160676534) internal successors, (672), 474 states have internal predecessors, (672), 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) [2024-12-02 07:05:27,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 672 transitions. [2024-12-02 07:05:27,481 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 672 transitions. Word has length 54 [2024-12-02 07:05:27,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:05:27,481 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 672 transitions. [2024-12-02 07:05:27,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 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) [2024-12-02 07:05:27,481 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 672 transitions. [2024-12-02 07:05:27,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-12-02 07:05:27,482 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:05:27,482 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] [2024-12-02 07:05:27,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 07:05:27,482 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:05:27,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:05:27,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1521991144, now seen corresponding path program 1 times [2024-12-02 07:05:27,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:05:27,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698529413] [2024-12-02 07:05:27,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:27,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:05:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:28,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:28,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:05:28,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698529413] [2024-12-02 07:05:28,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698529413] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:05:28,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:05:28,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-12-02 07:05:28,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549973491] [2024-12-02 07:05:28,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:05:28,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 07:05:28,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:05:28,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 07:05:28,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2024-12-02 07:05:28,642 INFO L87 Difference]: Start difference. First operand 475 states and 672 transitions. Second operand has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 states have internal predecessors, (55), 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) [2024-12-02 07:05:30,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:05:30,529 INFO L93 Difference]: Finished difference Result 1869 states and 2702 transitions. [2024-12-02 07:05:30,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-12-02 07:05:30,530 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 states have internal predecessors, (55), 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 55 [2024-12-02 07:05:30,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:05:30,534 INFO L225 Difference]: With dead ends: 1869 [2024-12-02 07:05:30,534 INFO L226 Difference]: Without dead ends: 1688 [2024-12-02 07:05:30,535 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=288, Invalid=1272, Unknown=0, NotChecked=0, Total=1560 [2024-12-02 07:05:30,535 INFO L435 NwaCegarLoop]: 223 mSDtfsCounter, 650 mSDsluCounter, 2585 mSDsCounter, 0 mSdLazyCounter, 1551 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 2808 SdHoareTripleChecker+Invalid, 1559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:05:30,536 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 2808 Invalid, 1559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1551 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 07:05:30,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2024-12-02 07:05:30,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 485. [2024-12-02 07:05:30,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 483 states have (on average 1.4161490683229814) internal successors, (684), 484 states have internal predecessors, (684), 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) [2024-12-02 07:05:30,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 684 transitions. [2024-12-02 07:05:30,549 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 684 transitions. Word has length 55 [2024-12-02 07:05:30,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:05:30,549 INFO L471 AbstractCegarLoop]: Abstraction has 485 states and 684 transitions. [2024-12-02 07:05:30,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 states have internal predecessors, (55), 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) [2024-12-02 07:05:30,549 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 684 transitions. [2024-12-02 07:05:30,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-12-02 07:05:30,550 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:05:30,550 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] [2024-12-02 07:05:30,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 07:05:30,550 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:05:30,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:05:30,551 INFO L85 PathProgramCache]: Analyzing trace with hash 822613335, now seen corresponding path program 1 times [2024-12-02 07:05:30,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:05:30,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740988862] [2024-12-02 07:05:30,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:30,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:05:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:31,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:31,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:05:31,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740988862] [2024-12-02 07:05:31,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740988862] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:05:31,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:05:31,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-12-02 07:05:31,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203128470] [2024-12-02 07:05:31,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:05:31,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 07:05:31,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:05:31,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 07:05:31,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2024-12-02 07:05:31,363 INFO L87 Difference]: Start difference. First operand 485 states and 684 transitions. Second operand has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 states have internal predecessors, (55), 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) [2024-12-02 07:05:32,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:05:32,774 INFO L93 Difference]: Finished difference Result 1868 states and 2699 transitions. [2024-12-02 07:05:32,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-12-02 07:05:32,774 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 states have internal predecessors, (55), 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 55 [2024-12-02 07:05:32,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:05:32,777 INFO L225 Difference]: With dead ends: 1868 [2024-12-02 07:05:32,777 INFO L226 Difference]: Without dead ends: 1693 [2024-12-02 07:05:32,778 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=246, Invalid=1160, Unknown=0, NotChecked=0, Total=1406 [2024-12-02 07:05:32,779 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 867 mSDsluCounter, 2396 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 2605 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 07:05:32,779 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 2605 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 07:05:32,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1693 states. [2024-12-02 07:05:32,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1693 to 490. [2024-12-02 07:05:32,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 488 states have (on average 1.4139344262295082) internal successors, (690), 489 states have internal predecessors, (690), 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) [2024-12-02 07:05:32,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 690 transitions. [2024-12-02 07:05:32,797 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 690 transitions. Word has length 55 [2024-12-02 07:05:32,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:05:32,797 INFO L471 AbstractCegarLoop]: Abstraction has 490 states and 690 transitions. [2024-12-02 07:05:32,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 states have internal predecessors, (55), 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) [2024-12-02 07:05:32,798 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 690 transitions. [2024-12-02 07:05:32,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-12-02 07:05:32,798 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:05:32,798 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] [2024-12-02 07:05:32,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 07:05:32,798 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:05:32,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:05:32,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1171871732, now seen corresponding path program 1 times [2024-12-02 07:05:32,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:05:32,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676071709] [2024-12-02 07:05:32,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:32,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:05:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:33,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:33,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:05:33,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676071709] [2024-12-02 07:05:33,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676071709] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:05:33,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:05:33,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 07:05:33,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835931171] [2024-12-02 07:05:33,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:05:33,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 07:05:33,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:05:33,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 07:05:33,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-12-02 07:05:33,356 INFO L87 Difference]: Start difference. First operand 490 states and 690 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 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) [2024-12-02 07:05:33,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:05:33,941 INFO L93 Difference]: Finished difference Result 1056 states and 1518 transitions. [2024-12-02 07:05:33,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 07:05:33,942 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 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 55 [2024-12-02 07:05:33,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:05:33,945 INFO L225 Difference]: With dead ends: 1056 [2024-12-02 07:05:33,945 INFO L226 Difference]: Without dead ends: 860 [2024-12-02 07:05:33,945 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=142, Invalid=458, Unknown=0, NotChecked=0, Total=600 [2024-12-02 07:05:33,946 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 615 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:05:33,946 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 1079 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 07:05:33,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2024-12-02 07:05:33,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 468. [2024-12-02 07:05:33,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 466 states have (on average 1.4163090128755365) internal successors, (660), 467 states have internal predecessors, (660), 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) [2024-12-02 07:05:33,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 660 transitions. [2024-12-02 07:05:33,955 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 660 transitions. Word has length 55 [2024-12-02 07:05:33,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:05:33,955 INFO L471 AbstractCegarLoop]: Abstraction has 468 states and 660 transitions. [2024-12-02 07:05:33,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 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) [2024-12-02 07:05:33,955 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 660 transitions. [2024-12-02 07:05:33,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-12-02 07:05:33,956 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:05:33,956 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] [2024-12-02 07:05:33,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 07:05:33,956 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:05:33,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:05:33,956 INFO L85 PathProgramCache]: Analyzing trace with hash 380290649, now seen corresponding path program 1 times [2024-12-02 07:05:33,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:05:33,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883123219] [2024-12-02 07:05:33,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:33,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:05:33,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:34,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:34,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:05:34,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883123219] [2024-12-02 07:05:34,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883123219] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:05:34,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:05:34,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 07:05:34,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821842888] [2024-12-02 07:05:34,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:05:34,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 07:05:34,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:05:34,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 07:05:34,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-12-02 07:05:34,433 INFO L87 Difference]: Start difference. First operand 468 states and 660 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 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) [2024-12-02 07:05:35,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:05:35,098 INFO L93 Difference]: Finished difference Result 1783 states and 2593 transitions. [2024-12-02 07:05:35,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 07:05:35,099 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 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 55 [2024-12-02 07:05:35,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:05:35,103 INFO L225 Difference]: With dead ends: 1783 [2024-12-02 07:05:35,103 INFO L226 Difference]: Without dead ends: 1592 [2024-12-02 07:05:35,104 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=135, Invalid=327, Unknown=0, NotChecked=0, Total=462 [2024-12-02 07:05:35,105 INFO L435 NwaCegarLoop]: 287 mSDtfsCounter, 408 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:05:35,105 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 1636 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 07:05:35,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2024-12-02 07:05:35,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 446. [2024-12-02 07:05:35,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 444 states have (on average 1.4211711711711712) internal successors, (631), 445 states have internal predecessors, (631), 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) [2024-12-02 07:05:35,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 631 transitions. [2024-12-02 07:05:35,120 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 631 transitions. Word has length 55 [2024-12-02 07:05:35,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:05:35,120 INFO L471 AbstractCegarLoop]: Abstraction has 446 states and 631 transitions. [2024-12-02 07:05:35,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 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) [2024-12-02 07:05:35,120 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 631 transitions. [2024-12-02 07:05:35,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 07:05:35,121 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:05:35,121 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] [2024-12-02 07:05:35,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 07:05:35,121 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:05:35,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:05:35,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1258334466, now seen corresponding path program 1 times [2024-12-02 07:05:35,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:05:35,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489158083] [2024-12-02 07:05:35,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:35,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:05:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:35,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:35,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:05:35,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489158083] [2024-12-02 07:05:35,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489158083] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:05:35,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:05:35,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 07:05:35,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703956155] [2024-12-02 07:05:35,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:05:35,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 07:05:35,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:05:35,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 07:05:35,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-12-02 07:05:35,615 INFO L87 Difference]: Start difference. First operand 446 states and 631 transitions. Second operand has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 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) [2024-12-02 07:05:36,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:05:36,041 INFO L93 Difference]: Finished difference Result 994 states and 1440 transitions. [2024-12-02 07:05:36,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 07:05:36,042 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 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 56 [2024-12-02 07:05:36,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:05:36,044 INFO L225 Difference]: With dead ends: 994 [2024-12-02 07:05:36,044 INFO L226 Difference]: Without dead ends: 819 [2024-12-02 07:05:36,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2024-12-02 07:05:36,046 INFO L435 NwaCegarLoop]: 158 mSDtfsCounter, 309 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:05:36,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 975 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 07:05:36,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2024-12-02 07:05:36,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 428. [2024-12-02 07:05:36,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 1.4285714285714286) internal successors, (610), 427 states have internal predecessors, (610), 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) [2024-12-02 07:05:36,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 610 transitions. [2024-12-02 07:05:36,055 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 610 transitions. Word has length 56 [2024-12-02 07:05:36,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:05:36,056 INFO L471 AbstractCegarLoop]: Abstraction has 428 states and 610 transitions. [2024-12-02 07:05:36,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 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) [2024-12-02 07:05:36,056 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 610 transitions. [2024-12-02 07:05:36,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-12-02 07:05:36,056 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:05:36,057 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] [2024-12-02 07:05:36,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 07:05:36,057 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:05:36,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:05:36,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1531780676, now seen corresponding path program 1 times [2024-12-02 07:05:36,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:05:36,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236659354] [2024-12-02 07:05:36,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:36,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:05:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:36,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:36,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:05:36,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236659354] [2024-12-02 07:05:36,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236659354] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:05:36,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:05:36,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:05:36,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442635214] [2024-12-02 07:05:36,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:05:36,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:05:36,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:05:36,111 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:05:36,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:05:36,111 INFO L87 Difference]: Start difference. First operand 428 states and 610 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2024-12-02 07:05:36,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:05:36,136 INFO L93 Difference]: Finished difference Result 1112 states and 1613 transitions. [2024-12-02 07:05:36,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:05:36,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 75 [2024-12-02 07:05:36,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:05:36,138 INFO L225 Difference]: With dead ends: 1112 [2024-12-02 07:05:36,138 INFO L226 Difference]: Without dead ends: 741 [2024-12-02 07:05:36,139 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 [2024-12-02 07:05:36,139 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 70 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:05:36,139 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 189 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:05:36,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2024-12-02 07:05:36,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 730. [2024-12-02 07:05:36,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 729 states have (on average 1.412894375857339) internal successors, (1030), 729 states have internal predecessors, (1030), 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) [2024-12-02 07:05:36,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 1030 transitions. [2024-12-02 07:05:36,153 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 1030 transitions. Word has length 75 [2024-12-02 07:05:36,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:05:36,153 INFO L471 AbstractCegarLoop]: Abstraction has 730 states and 1030 transitions. [2024-12-02 07:05:36,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2024-12-02 07:05:36,154 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 1030 transitions. [2024-12-02 07:05:36,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-12-02 07:05:36,154 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:05:36,154 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] [2024-12-02 07:05:36,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 07:05:36,155 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:05:36,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:05:36,155 INFO L85 PathProgramCache]: Analyzing trace with hash 241252331, now seen corresponding path program 1 times [2024-12-02 07:05:36,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:05:36,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095501724] [2024-12-02 07:05:36,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:36,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:05:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:36,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:36,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:05:36,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095501724] [2024-12-02 07:05:36,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095501724] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:05:36,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:05:36,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:05:36,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335953337] [2024-12-02 07:05:36,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:05:36,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:05:36,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:05:36,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:05:36,250 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:05:36,251 INFO L87 Difference]: Start difference. First operand 730 states and 1030 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2024-12-02 07:05:36,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:05:36,269 INFO L93 Difference]: Finished difference Result 2004 states and 2844 transitions. [2024-12-02 07:05:36,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:05:36,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 76 [2024-12-02 07:05:36,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:05:36,273 INFO L225 Difference]: With dead ends: 2004 [2024-12-02 07:05:36,273 INFO L226 Difference]: Without dead ends: 1331 [2024-12-02 07:05:36,273 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 [2024-12-02 07:05:36,274 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 51 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:05:36,274 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 257 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:05:36,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2024-12-02 07:05:36,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1257. [2024-12-02 07:05:36,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1257 states, 1256 states have (on average 1.4052547770700636) internal successors, (1765), 1256 states have internal predecessors, (1765), 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) [2024-12-02 07:05:36,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1765 transitions. [2024-12-02 07:05:36,294 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1765 transitions. Word has length 76 [2024-12-02 07:05:36,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:05:36,294 INFO L471 AbstractCegarLoop]: Abstraction has 1257 states and 1765 transitions. [2024-12-02 07:05:36,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2024-12-02 07:05:36,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1765 transitions. [2024-12-02 07:05:36,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-12-02 07:05:36,295 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:05:36,295 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] [2024-12-02 07:05:36,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 07:05:36,295 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:05:36,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:05:36,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1306565925, now seen corresponding path program 1 times [2024-12-02 07:05:36,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:05:36,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639714027] [2024-12-02 07:05:36,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:36,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:05:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:36,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:36,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:05:36,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639714027] [2024-12-02 07:05:36,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639714027] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:05:36,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:05:36,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:05:36,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103972067] [2024-12-02 07:05:36,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:05:36,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:05:36,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:05:36,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:05:36,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:05:36,383 INFO L87 Difference]: Start difference. First operand 1257 states and 1765 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2024-12-02 07:05:36,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:05:36,405 INFO L93 Difference]: Finished difference Result 3513 states and 4923 transitions. [2024-12-02 07:05:36,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:05:36,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 77 [2024-12-02 07:05:36,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:05:36,411 INFO L225 Difference]: With dead ends: 3513 [2024-12-02 07:05:36,411 INFO L226 Difference]: Without dead ends: 2313 [2024-12-02 07:05:36,413 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 [2024-12-02 07:05:36,413 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 44 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:05:36,413 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 255 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:05:36,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2313 states. [2024-12-02 07:05:36,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2313 to 2167. [2024-12-02 07:05:36,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2167 states, 2166 states have (on average 1.3855032317636196) internal successors, (3001), 2166 states have internal predecessors, (3001), 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) [2024-12-02 07:05:36,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2167 states to 2167 states and 3001 transitions. [2024-12-02 07:05:36,459 INFO L78 Accepts]: Start accepts. Automaton has 2167 states and 3001 transitions. Word has length 77 [2024-12-02 07:05:36,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:05:36,459 INFO L471 AbstractCegarLoop]: Abstraction has 2167 states and 3001 transitions. [2024-12-02 07:05:36,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2024-12-02 07:05:36,459 INFO L276 IsEmpty]: Start isEmpty. Operand 2167 states and 3001 transitions. [2024-12-02 07:05:36,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-12-02 07:05:36,460 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:05:36,460 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] [2024-12-02 07:05:36,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 07:05:36,460 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:05:36,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:05:36,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1695604898, now seen corresponding path program 1 times [2024-12-02 07:05:36,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:05:36,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742713237] [2024-12-02 07:05:36,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:36,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:05:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:36,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:36,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:05:36,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742713237] [2024-12-02 07:05:36,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742713237] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:05:36,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:05:36,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 07:05:36,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198109712] [2024-12-02 07:05:36,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:05:36,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 07:05:36,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:05:36,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 07:05:36,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:05:36,669 INFO L87 Difference]: Start difference. First operand 2167 states and 3001 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2024-12-02 07:05:36,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:05:36,694 INFO L93 Difference]: Finished difference Result 2265 states and 3130 transitions. [2024-12-02 07:05:36,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 07:05:36,695 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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 78 [2024-12-02 07:05:36,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:05:36,700 INFO L225 Difference]: With dead ends: 2265 [2024-12-02 07:05:36,700 INFO L226 Difference]: Without dead ends: 2263 [2024-12-02 07:05:36,701 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:05:36,701 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 0 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:05:36,702 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 589 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:05:36,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2263 states. [2024-12-02 07:05:36,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2263 to 2263. [2024-12-02 07:05:36,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 2262 states have (on average 1.3603006189213085) internal successors, (3077), 2262 states have internal predecessors, (3077), 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) [2024-12-02 07:05:36,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 3077 transitions. [2024-12-02 07:05:36,735 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 3077 transitions. Word has length 78 [2024-12-02 07:05:36,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:05:36,735 INFO L471 AbstractCegarLoop]: Abstraction has 2263 states and 3077 transitions. [2024-12-02 07:05:36,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2024-12-02 07:05:36,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 3077 transitions. [2024-12-02 07:05:36,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-12-02 07:05:36,736 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:05:36,736 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] [2024-12-02 07:05:36,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 07:05:36,737 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:05:36,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:05:36,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1415916470, now seen corresponding path program 1 times [2024-12-02 07:05:36,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:05:36,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466378339] [2024-12-02 07:05:36,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:36,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:05:36,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:36,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:36,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:05:36,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466378339] [2024-12-02 07:05:36,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466378339] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:05:36,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:05:36,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:05:36,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565454365] [2024-12-02 07:05:36,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:05:36,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:05:36,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:05:36,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:05:36,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:05:36,840 INFO L87 Difference]: Start difference. First operand 2263 states and 3077 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2024-12-02 07:05:36,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:05:36,870 INFO L93 Difference]: Finished difference Result 5883 states and 7991 transitions. [2024-12-02 07:05:36,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:05:36,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 79 [2024-12-02 07:05:36,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:05:36,880 INFO L225 Difference]: With dead ends: 5883 [2024-12-02 07:05:36,880 INFO L226 Difference]: Without dead ends: 3677 [2024-12-02 07:05:36,882 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 [2024-12-02 07:05:36,883 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 55 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:05:36,883 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 261 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:05:36,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3677 states. [2024-12-02 07:05:36,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3677 to 3387. [2024-12-02 07:05:36,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3387 states, 3386 states have (on average 1.3411104548139396) internal successors, (4541), 3386 states have internal predecessors, (4541), 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) [2024-12-02 07:05:36,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3387 states to 3387 states and 4541 transitions. [2024-12-02 07:05:36,933 INFO L78 Accepts]: Start accepts. Automaton has 3387 states and 4541 transitions. Word has length 79 [2024-12-02 07:05:36,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:05:36,933 INFO L471 AbstractCegarLoop]: Abstraction has 3387 states and 4541 transitions. [2024-12-02 07:05:36,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2024-12-02 07:05:36,934 INFO L276 IsEmpty]: Start isEmpty. Operand 3387 states and 4541 transitions. [2024-12-02 07:05:36,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-12-02 07:05:36,935 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:05:36,935 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 07:05:36,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 07:05:36,936 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:05:36,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:05:36,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1940322908, now seen corresponding path program 1 times [2024-12-02 07:05:36,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:05:36,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934555221] [2024-12-02 07:05:36,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:36,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:05:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:37,040 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:37,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:05:37,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934555221] [2024-12-02 07:05:37,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934555221] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:05:37,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:05:37,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:05:37,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690012204] [2024-12-02 07:05:37,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:05:37,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:05:37,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:05:37,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:05:37,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:05:37,041 INFO L87 Difference]: Start difference. First operand 3387 states and 4541 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2024-12-02 07:05:37,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:05:37,069 INFO L93 Difference]: Finished difference Result 6719 states and 9023 transitions. [2024-12-02 07:05:37,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:05:37,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 100 [2024-12-02 07:05:37,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:05:37,079 INFO L225 Difference]: With dead ends: 6719 [2024-12-02 07:05:37,079 INFO L226 Difference]: Without dead ends: 3389 [2024-12-02 07:05:37,082 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 [2024-12-02 07:05:37,084 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 57 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:05:37,084 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 233 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:05:37,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3389 states. [2024-12-02 07:05:37,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3389 to 3387. [2024-12-02 07:05:37,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3387 states, 3386 states have (on average 1.3198464264619019) internal successors, (4469), 3386 states have internal predecessors, (4469), 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) [2024-12-02 07:05:37,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3387 states to 3387 states and 4469 transitions. [2024-12-02 07:05:37,133 INFO L78 Accepts]: Start accepts. Automaton has 3387 states and 4469 transitions. Word has length 100 [2024-12-02 07:05:37,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:05:37,133 INFO L471 AbstractCegarLoop]: Abstraction has 3387 states and 4469 transitions. [2024-12-02 07:05:37,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2024-12-02 07:05:37,133 INFO L276 IsEmpty]: Start isEmpty. Operand 3387 states and 4469 transitions. [2024-12-02 07:05:37,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-12-02 07:05:37,134 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:05:37,135 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 07:05:37,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 07:05:37,135 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:05:37,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:05:37,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1124551470, now seen corresponding path program 1 times [2024-12-02 07:05:37,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:05:37,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680597945] [2024-12-02 07:05:37,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:37,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:05:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:37,631 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:37,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:05:37,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680597945] [2024-12-02 07:05:37,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680597945] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:05:37,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20858946] [2024-12-02 07:05:37,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:37,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:05:37,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:05:37,634 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:05:37,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 07:05:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:37,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-12-02 07:05:37,810 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:05:38,780 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:38,780 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:05:40,096 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:40,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20858946] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:05:40,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:05:40,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29 [2024-12-02 07:05:40,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88781530] [2024-12-02 07:05:40,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:05:40,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-12-02 07:05:40,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:05:40,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-12-02 07:05:40,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=768, Unknown=0, NotChecked=0, Total=870 [2024-12-02 07:05:40,099 INFO L87 Difference]: Start difference. First operand 3387 states and 4469 transitions. Second operand has 30 states, 30 states have (on average 9.2) internal successors, (276), 29 states have internal predecessors, (276), 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) [2024-12-02 07:05:47,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:05:47,241 INFO L93 Difference]: Finished difference Result 31695 states and 41984 transitions. [2024-12-02 07:05:47,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2024-12-02 07:05:47,242 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.2) internal successors, (276), 29 states have internal predecessors, (276), 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 100 [2024-12-02 07:05:47,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:05:47,282 INFO L225 Difference]: With dead ends: 31695 [2024-12-02 07:05:47,282 INFO L226 Difference]: Without dead ends: 28365 [2024-12-02 07:05:47,290 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7291 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=3118, Invalid=19834, Unknown=0, NotChecked=0, Total=22952 [2024-12-02 07:05:47,291 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 3640 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 2409 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3640 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 2500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:05:47,291 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3640 Valid, 1661 Invalid, 2500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2409 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 07:05:47,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28365 states. [2024-12-02 07:05:47,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28365 to 19493. [2024-12-02 07:05:47,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19493 states, 19492 states have (on average 1.317463574799918) internal successors, (25680), 19492 states have internal predecessors, (25680), 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) [2024-12-02 07:05:47,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19493 states to 19493 states and 25680 transitions. [2024-12-02 07:05:47,539 INFO L78 Accepts]: Start accepts. Automaton has 19493 states and 25680 transitions. Word has length 100 [2024-12-02 07:05:47,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:05:47,539 INFO L471 AbstractCegarLoop]: Abstraction has 19493 states and 25680 transitions. [2024-12-02 07:05:47,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.2) internal successors, (276), 29 states have internal predecessors, (276), 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) [2024-12-02 07:05:47,540 INFO L276 IsEmpty]: Start isEmpty. Operand 19493 states and 25680 transitions. [2024-12-02 07:05:47,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-12-02 07:05:47,543 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:05:47,543 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] [2024-12-02 07:05:47,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 07:05:47,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:05:47,743 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:05:47,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:05:47,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1543942337, now seen corresponding path program 1 times [2024-12-02 07:05:47,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:05:47,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296808913] [2024-12-02 07:05:47,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:47,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:05:47,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:48,244 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:48,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:05:48,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296808913] [2024-12-02 07:05:48,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296808913] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:05:48,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164608255] [2024-12-02 07:05:48,245 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:48,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:05:48,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:05:48,247 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:05:48,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 07:05:48,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:48,399 INFO L256 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-12-02 07:05:48,402 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:05:49,495 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:49,496 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:05:52,339 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:05:52,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164608255] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:05:52,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:05:52,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17, 17] total 43 [2024-12-02 07:05:52,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378262314] [2024-12-02 07:05:52,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:05:52,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-12-02 07:05:52,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:05:52,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-12-02 07:05:52,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1679, Unknown=0, NotChecked=0, Total=1806 [2024-12-02 07:05:52,341 INFO L87 Difference]: Start difference. First operand 19493 states and 25680 transitions. Second operand has 43 states, 43 states have (on average 6.348837209302325) internal successors, (273), 43 states have internal predecessors, (273), 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) [2024-12-02 07:06:34,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:06:34,826 INFO L93 Difference]: Finished difference Result 171717 states and 225105 transitions. [2024-12-02 07:06:34,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 299 states. [2024-12-02 07:06:34,826 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 6.348837209302325) internal successors, (273), 43 states have internal predecessors, (273), 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 101 [2024-12-02 07:06:34,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:06:35,052 INFO L225 Difference]: With dead ends: 171717 [2024-12-02 07:06:35,052 INFO L226 Difference]: Without dead ends: 152319 [2024-12-02 07:06:35,093 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 338 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44521 ImplicationChecksByTransitivity, 37.3s TimeCoverageRelationStatistics Valid=10537, Invalid=104723, Unknown=0, NotChecked=0, Total=115260 [2024-12-02 07:06:35,094 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 8169 mSDsluCounter, 3656 mSDsCounter, 0 mSdLazyCounter, 6646 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8169 SdHoareTripleChecker+Valid, 3812 SdHoareTripleChecker+Invalid, 6908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 6646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-12-02 07:06:35,094 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8169 Valid, 3812 Invalid, 6908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 6646 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-12-02 07:06:35,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152319 states. [2024-12-02 07:06:36,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152319 to 103759. [2024-12-02 07:06:36,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103759 states, 103758 states have (on average 1.3041211280094065) internal successors, (135313), 103758 states have internal predecessors, (135313), 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) [2024-12-02 07:06:36,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103759 states to 103759 states and 135313 transitions. [2024-12-02 07:06:36,697 INFO L78 Accepts]: Start accepts. Automaton has 103759 states and 135313 transitions. Word has length 101 [2024-12-02 07:06:36,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:06:36,697 INFO L471 AbstractCegarLoop]: Abstraction has 103759 states and 135313 transitions. [2024-12-02 07:06:36,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 6.348837209302325) internal successors, (273), 43 states have internal predecessors, (273), 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) [2024-12-02 07:06:36,697 INFO L276 IsEmpty]: Start isEmpty. Operand 103759 states and 135313 transitions. [2024-12-02 07:06:36,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 07:06:36,704 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:06:36,704 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] [2024-12-02 07:06:36,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 07:06:36,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-12-02 07:06:36,915 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:06:36,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:06:36,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1214363720, now seen corresponding path program 1 times [2024-12-02 07:06:36,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:06:36,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913565070] [2024-12-02 07:06:36,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:06:36,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:06:36,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:06:37,154 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:06:37,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:06:37,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913565070] [2024-12-02 07:06:37,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913565070] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:06:37,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607100849] [2024-12-02 07:06:37,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:06:37,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:06:37,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:06:37,156 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:06:37,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 07:06:37,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:06:37,302 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 07:06:37,305 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:06:38,265 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:06:38,266 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:06:39,287 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:06:39,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607100849] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:06:39,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:06:39,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 16] total 37 [2024-12-02 07:06:39,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534560331] [2024-12-02 07:06:39,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:06:39,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-12-02 07:06:39,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:06:39,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-12-02 07:06:39,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1212, Unknown=0, NotChecked=0, Total=1406 [2024-12-02 07:06:39,289 INFO L87 Difference]: Start difference. First operand 103759 states and 135313 transitions. Second operand has 38 states, 38 states have (on average 7.657894736842105) internal successors, (291), 37 states have internal predecessors, (291), 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) [2024-12-02 07:06:43,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:06:43,377 INFO L93 Difference]: Finished difference Result 312989 states and 409382 transitions. [2024-12-02 07:06:43,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-12-02 07:06:43,377 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 7.657894736842105) internal successors, (291), 37 states have internal predecessors, (291), 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 102 [2024-12-02 07:06:43,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:06:43,632 INFO L225 Difference]: With dead ends: 312989 [2024-12-02 07:06:43,632 INFO L226 Difference]: Without dead ends: 261813 [2024-12-02 07:06:43,685 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3191 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2082, Invalid=8630, Unknown=0, NotChecked=0, Total=10712 [2024-12-02 07:06:43,686 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 3087 mSDsluCounter, 2347 mSDsCounter, 0 mSdLazyCounter, 2723 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3087 SdHoareTripleChecker+Valid, 2480 SdHoareTripleChecker+Invalid, 2821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:06:43,686 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3087 Valid, 2480 Invalid, 2821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2723 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 07:06:43,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261813 states. [2024-12-02 07:06:45,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261813 to 113975. [2024-12-02 07:06:45,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113975 states, 113974 states have (on average 1.303762261568428) internal successors, (148595), 113974 states have internal predecessors, (148595), 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) [2024-12-02 07:06:45,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113975 states to 113975 states and 148595 transitions. [2024-12-02 07:06:45,870 INFO L78 Accepts]: Start accepts. Automaton has 113975 states and 148595 transitions. Word has length 102 [2024-12-02 07:06:45,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:06:45,870 INFO L471 AbstractCegarLoop]: Abstraction has 113975 states and 148595 transitions. [2024-12-02 07:06:45,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 7.657894736842105) internal successors, (291), 37 states have internal predecessors, (291), 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) [2024-12-02 07:06:45,870 INFO L276 IsEmpty]: Start isEmpty. Operand 113975 states and 148595 transitions. [2024-12-02 07:06:46,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 07:06:46,079 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:06:46,079 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] [2024-12-02 07:06:46,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 07:06:46,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:06:46,280 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:06:46,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:06:46,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1562208191, now seen corresponding path program 1 times [2024-12-02 07:06:46,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:06:46,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64257389] [2024-12-02 07:06:46,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:06:46,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:06:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:06:46,849 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 07:06:46,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:06:46,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64257389] [2024-12-02 07:06:46,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64257389] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:06:46,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:06:46,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-12-02 07:06:46,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894781835] [2024-12-02 07:06:46,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:06:46,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 07:06:46,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:06:46,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 07:06:46,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2024-12-02 07:06:46,850 INFO L87 Difference]: Start difference. First operand 113975 states and 148595 transitions. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 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) [2024-12-02 07:06:48,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:06:48,192 INFO L93 Difference]: Finished difference Result 152167 states and 198609 transitions. [2024-12-02 07:06:48,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-02 07:06:48,193 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 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 102 [2024-12-02 07:06:48,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:06:48,283 INFO L225 Difference]: With dead ends: 152167 [2024-12-02 07:06:48,283 INFO L226 Difference]: Without dead ends: 105293 [2024-12-02 07:06:48,314 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=934, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 07:06:48,315 INFO L435 NwaCegarLoop]: 266 mSDtfsCounter, 677 mSDsluCounter, 2809 mSDsCounter, 0 mSdLazyCounter, 1572 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 3075 SdHoareTripleChecker+Invalid, 1581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 07:06:48,315 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [677 Valid, 3075 Invalid, 1581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1572 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 07:06:48,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105293 states. [2024-12-02 07:06:49,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105293 to 100668. [2024-12-02 07:06:49,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100668 states, 100667 states have (on average 1.3060685229519107) internal successors, (131478), 100667 states have internal predecessors, (131478), 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) [2024-12-02 07:06:49,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100668 states to 100668 states and 131478 transitions. [2024-12-02 07:06:49,284 INFO L78 Accepts]: Start accepts. Automaton has 100668 states and 131478 transitions. Word has length 102 [2024-12-02 07:06:49,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:06:49,284 INFO L471 AbstractCegarLoop]: Abstraction has 100668 states and 131478 transitions. [2024-12-02 07:06:49,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 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) [2024-12-02 07:06:49,284 INFO L276 IsEmpty]: Start isEmpty. Operand 100668 states and 131478 transitions. [2024-12-02 07:06:49,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 07:06:49,289 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:06:49,290 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] [2024-12-02 07:06:49,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 07:06:49,290 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:06:49,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:06:49,290 INFO L85 PathProgramCache]: Analyzing trace with hash 3259025, now seen corresponding path program 1 times [2024-12-02 07:06:49,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:06:49,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724694764] [2024-12-02 07:06:49,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:06:49,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:06:49,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:06:49,493 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:06:49,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:06:49,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724694764] [2024-12-02 07:06:49,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724694764] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:06:49,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636216532] [2024-12-02 07:06:49,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:06:49,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:06:49,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:06:49,495 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:06:49,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 07:06:49,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:06:49,610 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 07:06:49,612 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:06:50,463 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:06:50,463 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:06:51,516 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:06:51,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636216532] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:06:51,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:06:51,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 13] total 28 [2024-12-02 07:06:51,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220789331] [2024-12-02 07:06:51,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:06:51,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-12-02 07:06:51,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:06:51,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-12-02 07:06:51,517 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2024-12-02 07:06:51,518 INFO L87 Difference]: Start difference. First operand 100668 states and 131478 transitions. Second operand has 29 states, 29 states have (on average 8.620689655172415) internal successors, (250), 28 states have internal predecessors, (250), 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) [2024-12-02 07:06:53,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:06:53,850 INFO L93 Difference]: Finished difference Result 197677 states and 257672 transitions. [2024-12-02 07:06:53,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-12-02 07:06:53,850 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 8.620689655172415) internal successors, (250), 28 states have internal predecessors, (250), 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 102 [2024-12-02 07:06:53,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:06:53,966 INFO L225 Difference]: With dead ends: 197677 [2024-12-02 07:06:53,966 INFO L226 Difference]: Without dead ends: 133105 [2024-12-02 07:06:54,004 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1130 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1115, Invalid=3715, Unknown=0, NotChecked=0, Total=4830 [2024-12-02 07:06:54,005 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 2576 mSDsluCounter, 1651 mSDsCounter, 0 mSdLazyCounter, 1855 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2576 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 1906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 07:06:54,005 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2576 Valid, 1789 Invalid, 1906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1855 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 07:06:54,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133105 states. [2024-12-02 07:06:55,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133105 to 107822. [2024-12-02 07:06:55,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107822 states, 107821 states have (on average 1.302306600754955) internal successors, (140416), 107821 states have internal predecessors, (140416), 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) [2024-12-02 07:06:55,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107822 states to 107822 states and 140416 transitions. [2024-12-02 07:06:55,463 INFO L78 Accepts]: Start accepts. Automaton has 107822 states and 140416 transitions. Word has length 102 [2024-12-02 07:06:55,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:06:55,463 INFO L471 AbstractCegarLoop]: Abstraction has 107822 states and 140416 transitions. [2024-12-02 07:06:55,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 8.620689655172415) internal successors, (250), 28 states have internal predecessors, (250), 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) [2024-12-02 07:06:55,463 INFO L276 IsEmpty]: Start isEmpty. Operand 107822 states and 140416 transitions. [2024-12-02 07:06:55,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 07:06:55,471 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:06:55,471 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] [2024-12-02 07:06:55,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 07:06:55,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 07:06:55,672 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:06:55,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:06:55,673 INFO L85 PathProgramCache]: Analyzing trace with hash 164603302, now seen corresponding path program 1 times [2024-12-02 07:06:55,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:06:55,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388111249] [2024-12-02 07:06:55,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:06:55,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:06:55,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:06:55,719 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 07:06:55,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:06:55,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388111249] [2024-12-02 07:06:55,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388111249] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:06:55,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:06:55,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:06:55,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631123798] [2024-12-02 07:06:55,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:06:55,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:06:55,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:06:55,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:06:55,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:06:55,720 INFO L87 Difference]: Start difference. First operand 107822 states and 140416 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2024-12-02 07:06:56,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:06:56,391 INFO L93 Difference]: Finished difference Result 206518 states and 269989 transitions. [2024-12-02 07:06:56,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:06:56,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 103 [2024-12-02 07:06:56,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:06:56,474 INFO L225 Difference]: With dead ends: 206518 [2024-12-02 07:06:56,474 INFO L226 Difference]: Without dead ends: 98809 [2024-12-02 07:06:56,500 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 [2024-12-02 07:06:56,500 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 81 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:06:56,500 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 100 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:06:56,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98809 states. [2024-12-02 07:06:57,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98809 to 98809. [2024-12-02 07:06:57,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98809 states, 98808 states have (on average 1.295897093352765) internal successors, (128045), 98808 states have internal predecessors, (128045), 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) [2024-12-02 07:06:57,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98809 states to 98809 states and 128045 transitions. [2024-12-02 07:06:57,494 INFO L78 Accepts]: Start accepts. Automaton has 98809 states and 128045 transitions. Word has length 103 [2024-12-02 07:06:57,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:06:57,494 INFO L471 AbstractCegarLoop]: Abstraction has 98809 states and 128045 transitions. [2024-12-02 07:06:57,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2024-12-02 07:06:57,494 INFO L276 IsEmpty]: Start isEmpty. Operand 98809 states and 128045 transitions. [2024-12-02 07:06:57,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 07:06:57,499 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:06:57,499 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] [2024-12-02 07:06:57,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-12-02 07:06:57,499 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:06:57,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:06:57,499 INFO L85 PathProgramCache]: Analyzing trace with hash -742700557, now seen corresponding path program 1 times [2024-12-02 07:06:57,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:06:57,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974372807] [2024-12-02 07:06:57,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:06:57,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:06:57,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:06:58,495 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:06:58,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:06:58,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974372807] [2024-12-02 07:06:58,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974372807] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:06:58,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13336161] [2024-12-02 07:06:58,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:06:58,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:06:58,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:06:58,497 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:06:58,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 07:06:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:06:58,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 07:06:58,614 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:06:59,589 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:06:59,590 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:07:00,633 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:07:00,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13336161] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:07:00,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:07:00,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15, 13] total 45 [2024-12-02 07:07:00,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566240043] [2024-12-02 07:07:00,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:07:00,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-12-02 07:07:00,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:07:00,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-12-02 07:07:00,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1849, Unknown=0, NotChecked=0, Total=1980 [2024-12-02 07:07:00,634 INFO L87 Difference]: Start difference. First operand 98809 states and 128045 transitions. Second operand has 45 states, 45 states have (on average 6.311111111111111) internal successors, (284), 45 states have internal predecessors, (284), 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) [2024-12-02 07:07:10,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:07:10,073 INFO L93 Difference]: Finished difference Result 281466 states and 365504 transitions. [2024-12-02 07:07:10,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2024-12-02 07:07:10,073 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 6.311111111111111) internal successors, (284), 45 states have internal predecessors, (284), 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 103 [2024-12-02 07:07:10,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:07:10,279 INFO L225 Difference]: With dead ends: 281466 [2024-12-02 07:07:10,280 INFO L226 Difference]: Without dead ends: 216334 [2024-12-02 07:07:10,333 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6118 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=2910, Invalid=20346, Unknown=0, NotChecked=0, Total=23256 [2024-12-02 07:07:10,333 INFO L435 NwaCegarLoop]: 274 mSDtfsCounter, 4758 mSDsluCounter, 7250 mSDsCounter, 0 mSdLazyCounter, 4498 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4758 SdHoareTripleChecker+Valid, 7524 SdHoareTripleChecker+Invalid, 4540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 4498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-12-02 07:07:10,333 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4758 Valid, 7524 Invalid, 4540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 4498 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-12-02 07:07:10,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216334 states. [2024-12-02 07:07:12,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216334 to 155845. [2024-12-02 07:07:12,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155845 states, 155844 states have (on average 1.2982790482790483) internal successors, (202329), 155844 states have internal predecessors, (202329), 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) [2024-12-02 07:07:12,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155845 states to 155845 states and 202329 transitions. [2024-12-02 07:07:12,710 INFO L78 Accepts]: Start accepts. Automaton has 155845 states and 202329 transitions. Word has length 103 [2024-12-02 07:07:12,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:07:12,711 INFO L471 AbstractCegarLoop]: Abstraction has 155845 states and 202329 transitions. [2024-12-02 07:07:12,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 6.311111111111111) internal successors, (284), 45 states have internal predecessors, (284), 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) [2024-12-02 07:07:12,711 INFO L276 IsEmpty]: Start isEmpty. Operand 155845 states and 202329 transitions. [2024-12-02 07:07:12,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 07:07:12,720 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:07:12,720 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] [2024-12-02 07:07:12,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 07:07:12,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 07:07:12,921 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:07:12,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:07:12,921 INFO L85 PathProgramCache]: Analyzing trace with hash 520064885, now seen corresponding path program 1 times [2024-12-02 07:07:12,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:07:12,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502689055] [2024-12-02 07:07:12,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:07:12,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:07:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:07:13,970 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:07:13,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:07:13,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502689055] [2024-12-02 07:07:13,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502689055] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:07:13,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243386898] [2024-12-02 07:07:13,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:07:13,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:07:13,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:07:13,972 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:07:13,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 07:07:14,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:07:14,114 INFO L256 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-12-02 07:07:14,116 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:07:15,048 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:07:15,049 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:07:15,948 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:07:15,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243386898] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:07:15,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:07:15,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 13, 12] total 41 [2024-12-02 07:07:15,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72816232] [2024-12-02 07:07:15,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:07:15,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-12-02 07:07:15,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:07:15,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-12-02 07:07:15,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1516, Unknown=0, NotChecked=0, Total=1640 [2024-12-02 07:07:15,950 INFO L87 Difference]: Start difference. First operand 155845 states and 202329 transitions. Second operand has 41 states, 41 states have (on average 6.902439024390244) internal successors, (283), 41 states have internal predecessors, (283), 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) [2024-12-02 07:07:24,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:07:24,478 INFO L93 Difference]: Finished difference Result 337121 states and 436048 transitions. [2024-12-02 07:07:24,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2024-12-02 07:07:24,479 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 6.902439024390244) internal successors, (283), 41 states have internal predecessors, (283), 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 103 [2024-12-02 07:07:24,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:07:24,744 INFO L225 Difference]: With dead ends: 337121 [2024-12-02 07:07:24,744 INFO L226 Difference]: Without dead ends: 282068 [2024-12-02 07:07:24,797 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 188 SyntacticMatches, 1 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5507 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=2624, Invalid=17968, Unknown=0, NotChecked=0, Total=20592 [2024-12-02 07:07:24,798 INFO L435 NwaCegarLoop]: 313 mSDtfsCounter, 2371 mSDsluCounter, 7995 mSDsCounter, 0 mSdLazyCounter, 4652 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2371 SdHoareTripleChecker+Valid, 8308 SdHoareTripleChecker+Invalid, 4676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 4652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-12-02 07:07:24,798 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2371 Valid, 8308 Invalid, 4676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 4652 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-12-02 07:07:24,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282068 states. [2024-12-02 07:07:27,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282068 to 254081. [2024-12-02 07:07:27,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254081 states, 254080 states have (on average 1.296878935768262) internal successors, (329511), 254080 states have internal predecessors, (329511), 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) [2024-12-02 07:07:27,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254081 states to 254081 states and 329511 transitions. [2024-12-02 07:07:27,886 INFO L78 Accepts]: Start accepts. Automaton has 254081 states and 329511 transitions. Word has length 103 [2024-12-02 07:07:27,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:07:27,886 INFO L471 AbstractCegarLoop]: Abstraction has 254081 states and 329511 transitions. [2024-12-02 07:07:27,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 6.902439024390244) internal successors, (283), 41 states have internal predecessors, (283), 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) [2024-12-02 07:07:27,887 INFO L276 IsEmpty]: Start isEmpty. Operand 254081 states and 329511 transitions. [2024-12-02 07:07:27,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 07:07:27,895 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:07:27,895 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 07:07:27,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 07:07:28,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:07:28,096 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:07:28,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:07:28,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1974632121, now seen corresponding path program 1 times [2024-12-02 07:07:28,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:07:28,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257046163] [2024-12-02 07:07:28,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:07:28,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:07:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:07:28,377 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:07:28,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:07:28,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257046163] [2024-12-02 07:07:28,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257046163] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:07:28,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:07:28,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:07:28,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265897220] [2024-12-02 07:07:28,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:07:28,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:07:28,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:07:28,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:07:28,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:07:28,378 INFO L87 Difference]: Start difference. First operand 254081 states and 329511 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2024-12-02 07:07:29,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:07:29,031 INFO L93 Difference]: Finished difference Result 368454 states and 474798 transitions. [2024-12-02 07:07:29,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:07:29,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 103 [2024-12-02 07:07:29,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:07:29,357 INFO L225 Difference]: With dead ends: 368454 [2024-12-02 07:07:29,357 INFO L226 Difference]: Without dead ends: 114486 [2024-12-02 07:07:29,408 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 [2024-12-02 07:07:29,408 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 54 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:07:29,408 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 209 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:07:29,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114486 states. [2024-12-02 07:07:30,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114486 to 111763. [2024-12-02 07:07:30,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111763 states, 111762 states have (on average 1.2534761367906802) internal successors, (140091), 111762 states have internal predecessors, (140091), 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) [2024-12-02 07:07:30,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111763 states to 111763 states and 140091 transitions. [2024-12-02 07:07:30,631 INFO L78 Accepts]: Start accepts. Automaton has 111763 states and 140091 transitions. Word has length 103 [2024-12-02 07:07:30,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:07:30,631 INFO L471 AbstractCegarLoop]: Abstraction has 111763 states and 140091 transitions. [2024-12-02 07:07:30,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2024-12-02 07:07:30,631 INFO L276 IsEmpty]: Start isEmpty. Operand 111763 states and 140091 transitions. [2024-12-02 07:07:30,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 07:07:30,637 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:07:30,638 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:07:30,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-12-02 07:07:30,638 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:07:30,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:07:30,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1722847943, now seen corresponding path program 1 times [2024-12-02 07:07:30,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:07:30,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177974173] [2024-12-02 07:07:30,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:07:30,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:07:30,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:07:30,979 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:07:30,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:07:30,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177974173] [2024-12-02 07:07:30,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177974173] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:07:30,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007769338] [2024-12-02 07:07:30,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:07:30,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:07:30,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:07:30,981 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:07:30,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 07:07:31,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:07:31,134 INFO L256 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 07:07:31,135 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:07:31,249 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 07:07:31,249 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:07:31,423 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 07:07:31,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007769338] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:07:31,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:07:31,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 16 [2024-12-02 07:07:31,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708950519] [2024-12-02 07:07:31,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:07:31,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 07:07:31,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:07:31,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 07:07:31,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-12-02 07:07:31,425 INFO L87 Difference]: Start difference. First operand 111763 states and 140091 transitions. Second operand has 16 states, 16 states have (on average 18.3125) internal successors, (293), 16 states have internal predecessors, (293), 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) [2024-12-02 07:07:32,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:07:32,786 INFO L93 Difference]: Finished difference Result 210547 states and 261493 transitions. [2024-12-02 07:07:32,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 07:07:32,787 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 18.3125) internal successors, (293), 16 states have internal predecessors, (293), 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 103 [2024-12-02 07:07:32,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:07:32,873 INFO L225 Difference]: With dead ends: 210547 [2024-12-02 07:07:32,873 INFO L226 Difference]: Without dead ends: 98897 [2024-12-02 07:07:32,902 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=371, Invalid=1521, Unknown=0, NotChecked=0, Total=1892 [2024-12-02 07:07:32,903 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 652 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:07:32,903 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 979 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 07:07:32,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98897 states. [2024-12-02 07:07:33,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98897 to 81694. [2024-12-02 07:07:33,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81694 states, 81693 states have (on average 1.250621228257011) internal successors, (102167), 81693 states have internal predecessors, (102167), 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) [2024-12-02 07:07:33,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81694 states to 81694 states and 102167 transitions. [2024-12-02 07:07:33,712 INFO L78 Accepts]: Start accepts. Automaton has 81694 states and 102167 transitions. Word has length 103 [2024-12-02 07:07:33,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:07:33,712 INFO L471 AbstractCegarLoop]: Abstraction has 81694 states and 102167 transitions. [2024-12-02 07:07:33,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 18.3125) internal successors, (293), 16 states have internal predecessors, (293), 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) [2024-12-02 07:07:33,713 INFO L276 IsEmpty]: Start isEmpty. Operand 81694 states and 102167 transitions. [2024-12-02 07:07:33,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 07:07:33,715 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:07:33,715 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] [2024-12-02 07:07:33,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 07:07:33,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-12-02 07:07:33,916 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:07:33,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:07:33,916 INFO L85 PathProgramCache]: Analyzing trace with hash 799396471, now seen corresponding path program 1 times [2024-12-02 07:07:33,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:07:33,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86255223] [2024-12-02 07:07:33,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:07:33,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:07:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:07:34,951 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:07:34,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:07:34,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86255223] [2024-12-02 07:07:34,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86255223] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:07:34,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591289579] [2024-12-02 07:07:34,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:07:34,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:07:34,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:07:34,953 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:07:34,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 07:07:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:07:35,088 INFO L256 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-12-02 07:07:35,090 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:07:37,607 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:07:37,607 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:07:40,090 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:07:40,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591289579] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:07:40,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:07:40,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18, 18] total 54 [2024-12-02 07:07:40,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611889063] [2024-12-02 07:07:40,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:07:40,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-12-02 07:07:40,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:07:40,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-12-02 07:07:40,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=2696, Unknown=0, NotChecked=0, Total=2862 [2024-12-02 07:07:40,092 INFO L87 Difference]: Start difference. First operand 81694 states and 102167 transitions. Second operand has 54 states, 54 states have (on average 5.296296296296297) internal successors, (286), 54 states have internal predecessors, (286), 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) [2024-12-02 07:07:59,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:07:59,206 INFO L93 Difference]: Finished difference Result 128042 states and 159658 transitions. [2024-12-02 07:07:59,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2024-12-02 07:07:59,206 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.296296296296297) internal successors, (286), 54 states have internal predecessors, (286), 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 103 [2024-12-02 07:07:59,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:07:59,295 INFO L225 Difference]: With dead ends: 128042 [2024-12-02 07:07:59,295 INFO L226 Difference]: Without dead ends: 107070 [2024-12-02 07:07:59,320 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10431 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=3373, Invalid=34457, Unknown=0, NotChecked=0, Total=37830 [2024-12-02 07:07:59,321 INFO L435 NwaCegarLoop]: 390 mSDtfsCounter, 2968 mSDsluCounter, 12567 mSDsCounter, 0 mSdLazyCounter, 7032 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2968 SdHoareTripleChecker+Valid, 12957 SdHoareTripleChecker+Invalid, 7055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 7032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-12-02 07:07:59,321 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2968 Valid, 12957 Invalid, 7055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 7032 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-12-02 07:07:59,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107070 states. [2024-12-02 07:08:00,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107070 to 83019. [2024-12-02 07:08:00,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83019 states, 83018 states have (on average 1.2499337493073792) internal successors, (103767), 83018 states have internal predecessors, (103767), 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) [2024-12-02 07:08:00,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83019 states to 83019 states and 103767 transitions. [2024-12-02 07:08:00,290 INFO L78 Accepts]: Start accepts. Automaton has 83019 states and 103767 transitions. Word has length 103 [2024-12-02 07:08:00,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:08:00,290 INFO L471 AbstractCegarLoop]: Abstraction has 83019 states and 103767 transitions. [2024-12-02 07:08:00,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.296296296296297) internal successors, (286), 54 states have internal predecessors, (286), 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) [2024-12-02 07:08:00,291 INFO L276 IsEmpty]: Start isEmpty. Operand 83019 states and 103767 transitions. [2024-12-02 07:08:00,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 07:08:00,295 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:08:00,295 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 07:08:00,301 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 07:08:00,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:08:00,495 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:08:00,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:08:00,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1754393168, now seen corresponding path program 1 times [2024-12-02 07:08:00,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:08:00,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790905644] [2024-12-02 07:08:00,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:08:00,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:08:00,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:08:00,985 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:08:00,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:08:00,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790905644] [2024-12-02 07:08:00,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790905644] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:08:00,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329107601] [2024-12-02 07:08:00,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:08:00,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:08:00,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:08:00,987 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:08:00,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 07:08:01,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:08:01,111 INFO L256 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-12-02 07:08:01,113 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:08:03,917 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:08:03,917 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:08:05,700 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:08:05,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329107601] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:08:05,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:08:05,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 23, 19] total 54 [2024-12-02 07:08:05,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543514673] [2024-12-02 07:08:05,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:08:05,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-12-02 07:08:05,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:08:05,701 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-12-02 07:08:05,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=2554, Unknown=0, NotChecked=0, Total=2862 [2024-12-02 07:08:05,702 INFO L87 Difference]: Start difference. First operand 83019 states and 103767 transitions. Second operand has 54 states, 54 states have (on average 4.981481481481482) internal successors, (269), 54 states have internal predecessors, (269), 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) [2024-12-02 07:08:12,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:08:12,188 INFO L93 Difference]: Finished difference Result 123956 states and 155448 transitions. [2024-12-02 07:08:12,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-12-02 07:08:12,189 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 4.981481481481482) internal successors, (269), 54 states have internal predecessors, (269), 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 104 [2024-12-02 07:08:12,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:08:12,259 INFO L225 Difference]: With dead ends: 123956 [2024-12-02 07:08:12,259 INFO L226 Difference]: Without dead ends: 88706 [2024-12-02 07:08:12,283 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3973 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1813, Invalid=11993, Unknown=0, NotChecked=0, Total=13806 [2024-12-02 07:08:12,283 INFO L435 NwaCegarLoop]: 207 mSDtfsCounter, 2792 mSDsluCounter, 4389 mSDsCounter, 0 mSdLazyCounter, 2458 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2792 SdHoareTripleChecker+Valid, 4596 SdHoareTripleChecker+Invalid, 2484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 07:08:12,284 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2792 Valid, 4596 Invalid, 2484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2458 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 07:08:12,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88706 states. [2024-12-02 07:08:12,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88706 to 57126. [2024-12-02 07:08:12,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57126 states, 57125 states have (on average 1.2474923413566739) internal successors, (71263), 57125 states have internal predecessors, (71263), 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) [2024-12-02 07:08:13,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57126 states to 57126 states and 71263 transitions. [2024-12-02 07:08:13,021 INFO L78 Accepts]: Start accepts. Automaton has 57126 states and 71263 transitions. Word has length 104 [2024-12-02 07:08:13,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:08:13,021 INFO L471 AbstractCegarLoop]: Abstraction has 57126 states and 71263 transitions. [2024-12-02 07:08:13,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 4.981481481481482) internal successors, (269), 54 states have internal predecessors, (269), 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) [2024-12-02 07:08:13,021 INFO L276 IsEmpty]: Start isEmpty. Operand 57126 states and 71263 transitions. [2024-12-02 07:08:13,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 07:08:13,023 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:08:13,023 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:08:13,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 07:08:13,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:08:13,224 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:08:13,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:08:13,228 INFO L85 PathProgramCache]: Analyzing trace with hash 174975633, now seen corresponding path program 1 times [2024-12-02 07:08:13,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:08:13,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180537185] [2024-12-02 07:08:13,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:08:13,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:08:13,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:08:13,262 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 07:08:13,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:08:13,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180537185] [2024-12-02 07:08:13,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180537185] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:08:13,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:08:13,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:08:13,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554703444] [2024-12-02 07:08:13,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:08:13,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:08:13,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:08:13,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:08:13,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:08:13,264 INFO L87 Difference]: Start difference. First operand 57126 states and 71263 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2024-12-02 07:08:13,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:08:13,446 INFO L93 Difference]: Finished difference Result 95753 states and 119845 transitions. [2024-12-02 07:08:13,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:08:13,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 105 [2024-12-02 07:08:13,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:08:13,481 INFO L225 Difference]: With dead ends: 95753 [2024-12-02 07:08:13,481 INFO L226 Difference]: Without dead ends: 39396 [2024-12-02 07:08:13,502 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 [2024-12-02 07:08:13,503 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 80 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:08:13,503 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 116 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:08:13,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39396 states. [2024-12-02 07:08:13,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39396 to 39396. [2024-12-02 07:08:13,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39396 states, 39395 states have (on average 1.2333037187460338) internal successors, (48586), 39395 states have internal predecessors, (48586), 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) [2024-12-02 07:08:13,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39396 states to 39396 states and 48586 transitions. [2024-12-02 07:08:13,823 INFO L78 Accepts]: Start accepts. Automaton has 39396 states and 48586 transitions. Word has length 105 [2024-12-02 07:08:13,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:08:13,824 INFO L471 AbstractCegarLoop]: Abstraction has 39396 states and 48586 transitions. [2024-12-02 07:08:13,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2024-12-02 07:08:13,824 INFO L276 IsEmpty]: Start isEmpty. Operand 39396 states and 48586 transitions. [2024-12-02 07:08:13,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 07:08:13,825 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:08:13,825 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:08:13,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-12-02 07:08:13,825 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:08:13,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:08:13,825 INFO L85 PathProgramCache]: Analyzing trace with hash 7289595, now seen corresponding path program 1 times [2024-12-02 07:08:13,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:08:13,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541999677] [2024-12-02 07:08:13,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:08:13,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:08:13,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:08:13,859 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 07:08:13,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:08:13,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541999677] [2024-12-02 07:08:13,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541999677] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:08:13,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:08:13,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:08:13,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726780119] [2024-12-02 07:08:13,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:08:13,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:08:13,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:08:13,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:08:13,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:08:13,860 INFO L87 Difference]: Start difference. First operand 39396 states and 48586 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-12-02 07:08:13,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:08:13,996 INFO L93 Difference]: Finished difference Result 69235 states and 85725 transitions. [2024-12-02 07:08:13,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:08:13,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 105 [2024-12-02 07:08:13,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:08:14,023 INFO L225 Difference]: With dead ends: 69235 [2024-12-02 07:08:14,023 INFO L226 Difference]: Without dead ends: 30229 [2024-12-02 07:08:14,039 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 [2024-12-02 07:08:14,039 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 75 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:08:14,039 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 124 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:08:14,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30229 states. [2024-12-02 07:08:14,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30229 to 30229. [2024-12-02 07:08:14,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30229 states, 30228 states have (on average 1.219730051607781) internal successors, (36870), 30228 states have internal predecessors, (36870), 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) [2024-12-02 07:08:14,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30229 states to 30229 states and 36870 transitions. [2024-12-02 07:08:14,367 INFO L78 Accepts]: Start accepts. Automaton has 30229 states and 36870 transitions. Word has length 105 [2024-12-02 07:08:14,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:08:14,368 INFO L471 AbstractCegarLoop]: Abstraction has 30229 states and 36870 transitions. [2024-12-02 07:08:14,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-12-02 07:08:14,368 INFO L276 IsEmpty]: Start isEmpty. Operand 30229 states and 36870 transitions. [2024-12-02 07:08:14,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 07:08:14,369 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:08:14,369 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:08:14,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-12-02 07:08:14,369 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:08:14,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:08:14,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1481271785, now seen corresponding path program 1 times [2024-12-02 07:08:14,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:08:14,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23208001] [2024-12-02 07:08:14,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:08:14,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:08:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:08:14,647 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:08:14,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:08:14,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23208001] [2024-12-02 07:08:14,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23208001] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:08:14,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037620508] [2024-12-02 07:08:14,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:08:14,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:08:14,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:08:14,650 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:08:14,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 07:08:14,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:08:14,801 INFO L256 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 07:08:14,802 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:08:16,085 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:08:16,085 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:08:16,804 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:08:16,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037620508] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:08:16,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:08:16,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 14] total 37 [2024-12-02 07:08:16,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114182130] [2024-12-02 07:08:16,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:08:16,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-12-02 07:08:16,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:08:16,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-12-02 07:08:16,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1194, Unknown=0, NotChecked=0, Total=1332 [2024-12-02 07:08:16,805 INFO L87 Difference]: Start difference. First operand 30229 states and 36870 transitions. Second operand has 37 states, 37 states have (on average 7.054054054054054) internal successors, (261), 37 states have internal predecessors, (261), 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) [2024-12-02 07:08:18,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:08:18,091 INFO L93 Difference]: Finished difference Result 45692 states and 55644 transitions. [2024-12-02 07:08:18,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-12-02 07:08:18,091 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 7.054054054054054) internal successors, (261), 37 states have internal predecessors, (261), 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 105 [2024-12-02 07:08:18,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:08:18,117 INFO L225 Difference]: With dead ends: 45692 [2024-12-02 07:08:18,117 INFO L226 Difference]: Without dead ends: 36489 [2024-12-02 07:08:18,125 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 185 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=543, Invalid=2879, Unknown=0, NotChecked=0, Total=3422 [2024-12-02 07:08:18,125 INFO L435 NwaCegarLoop]: 179 mSDtfsCounter, 1038 mSDsluCounter, 2824 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1038 SdHoareTripleChecker+Valid, 3003 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:08:18,126 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1038 Valid, 3003 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 07:08:18,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36489 states. [2024-12-02 07:08:18,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36489 to 33199. [2024-12-02 07:08:18,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33199 states, 33198 states have (on average 1.2157660100006025) internal successors, (40361), 33198 states have internal predecessors, (40361), 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) [2024-12-02 07:08:18,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33199 states to 33199 states and 40361 transitions. [2024-12-02 07:08:18,401 INFO L78 Accepts]: Start accepts. Automaton has 33199 states and 40361 transitions. Word has length 105 [2024-12-02 07:08:18,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:08:18,401 INFO L471 AbstractCegarLoop]: Abstraction has 33199 states and 40361 transitions. [2024-12-02 07:08:18,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 7.054054054054054) internal successors, (261), 37 states have internal predecessors, (261), 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) [2024-12-02 07:08:18,401 INFO L276 IsEmpty]: Start isEmpty. Operand 33199 states and 40361 transitions. [2024-12-02 07:08:18,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 07:08:18,482 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:08:18,482 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:08:18,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 07:08:18,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-12-02 07:08:18,682 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:08:18,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:08:18,684 INFO L85 PathProgramCache]: Analyzing trace with hash -331829943, now seen corresponding path program 1 times [2024-12-02 07:08:18,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:08:18,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849718725] [2024-12-02 07:08:18,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:08:18,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:08:18,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:08:19,671 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:08:19,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:08:19,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849718725] [2024-12-02 07:08:19,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849718725] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:08:19,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729440521] [2024-12-02 07:08:19,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:08:19,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:08:19,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:08:19,673 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:08:19,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 07:08:19,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:08:19,822 INFO L256 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 07:08:19,824 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:08:20,608 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:08:20,608 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:08:21,388 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:08:21,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729440521] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:08:21,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:08:21,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 13, 12] total 47 [2024-12-02 07:08:21,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784219427] [2024-12-02 07:08:21,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:08:21,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-12-02 07:08:21,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:08:21,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-12-02 07:08:21,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=2000, Unknown=0, NotChecked=0, Total=2162 [2024-12-02 07:08:21,390 INFO L87 Difference]: Start difference. First operand 33199 states and 40361 transitions. Second operand has 47 states, 47 states have (on average 5.957446808510638) internal successors, (280), 47 states have internal predecessors, (280), 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) [2024-12-02 07:08:26,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:08:26,066 INFO L93 Difference]: Finished difference Result 41875 states and 51063 transitions. [2024-12-02 07:08:26,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-12-02 07:08:26,067 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 5.957446808510638) internal successors, (280), 47 states have internal predecessors, (280), 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 105 [2024-12-02 07:08:26,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:08:26,088 INFO L225 Difference]: With dead ends: 41875 [2024-12-02 07:08:26,088 INFO L226 Difference]: Without dead ends: 30045 [2024-12-02 07:08:26,095 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1961 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1047, Invalid=8655, Unknown=0, NotChecked=0, Total=9702 [2024-12-02 07:08:26,095 INFO L435 NwaCegarLoop]: 277 mSDtfsCounter, 1565 mSDsluCounter, 7004 mSDsCounter, 0 mSdLazyCounter, 4042 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1565 SdHoareTripleChecker+Valid, 7281 SdHoareTripleChecker+Invalid, 4060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 4042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:08:26,096 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1565 Valid, 7281 Invalid, 4060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 4042 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-02 07:08:26,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30045 states. [2024-12-02 07:08:26,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30045 to 29728. [2024-12-02 07:08:26,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29728 states, 29727 states have (on average 1.214081474753591) internal successors, (36091), 29727 states have internal predecessors, (36091), 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) [2024-12-02 07:08:26,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29728 states to 29728 states and 36091 transitions. [2024-12-02 07:08:26,336 INFO L78 Accepts]: Start accepts. Automaton has 29728 states and 36091 transitions. Word has length 105 [2024-12-02 07:08:26,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:08:26,336 INFO L471 AbstractCegarLoop]: Abstraction has 29728 states and 36091 transitions. [2024-12-02 07:08:26,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 5.957446808510638) internal successors, (280), 47 states have internal predecessors, (280), 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) [2024-12-02 07:08:26,337 INFO L276 IsEmpty]: Start isEmpty. Operand 29728 states and 36091 transitions. [2024-12-02 07:08:26,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 07:08:26,337 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:08:26,338 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:08:26,344 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 07:08:26,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-12-02 07:08:26,538 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:08:26,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:08:26,538 INFO L85 PathProgramCache]: Analyzing trace with hash 446625703, now seen corresponding path program 1 times [2024-12-02 07:08:26,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:08:26,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198172876] [2024-12-02 07:08:26,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:08:26,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:08:26,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:08:26,821 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:08:26,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:08:26,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198172876] [2024-12-02 07:08:26,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198172876] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:08:26,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533182119] [2024-12-02 07:08:26,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:08:26,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:08:26,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:08:26,823 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:08:26,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 07:08:26,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:08:26,958 INFO L256 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 07:08:26,959 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:08:27,528 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:08:27,528 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:08:27,981 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:08:27,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533182119] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:08:27,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:08:27,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 11] total 29 [2024-12-02 07:08:27,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345986649] [2024-12-02 07:08:27,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:08:27,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-12-02 07:08:27,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:08:27,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-12-02 07:08:27,982 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=712, Unknown=0, NotChecked=0, Total=812 [2024-12-02 07:08:27,983 INFO L87 Difference]: Start difference. First operand 29728 states and 36091 transitions. Second operand has 29 states, 29 states have (on average 8.862068965517242) internal successors, (257), 29 states have internal predecessors, (257), 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) [2024-12-02 07:08:28,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:08:28,725 INFO L93 Difference]: Finished difference Result 34972 states and 42573 transitions. [2024-12-02 07:08:28,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 07:08:28,726 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 8.862068965517242) internal successors, (257), 29 states have internal predecessors, (257), 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 105 [2024-12-02 07:08:28,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:08:28,747 INFO L225 Difference]: With dead ends: 34972 [2024-12-02 07:08:28,747 INFO L226 Difference]: Without dead ends: 25304 [2024-12-02 07:08:28,755 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 194 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=295, Invalid=1511, Unknown=0, NotChecked=0, Total=1806 [2024-12-02 07:08:28,756 INFO L435 NwaCegarLoop]: 205 mSDtfsCounter, 657 mSDsluCounter, 2741 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 2946 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 07:08:28,756 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 2946 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 07:08:28,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25304 states. [2024-12-02 07:08:29,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25304 to 25298. [2024-12-02 07:08:29,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25298 states, 25297 states have (on average 1.2127525002964779) internal successors, (30679), 25297 states have internal predecessors, (30679), 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) [2024-12-02 07:08:29,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25298 states to 25298 states and 30679 transitions. [2024-12-02 07:08:29,164 INFO L78 Accepts]: Start accepts. Automaton has 25298 states and 30679 transitions. Word has length 105 [2024-12-02 07:08:29,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:08:29,164 INFO L471 AbstractCegarLoop]: Abstraction has 25298 states and 30679 transitions. [2024-12-02 07:08:29,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 8.862068965517242) internal successors, (257), 29 states have internal predecessors, (257), 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) [2024-12-02 07:08:29,164 INFO L276 IsEmpty]: Start isEmpty. Operand 25298 states and 30679 transitions. [2024-12-02 07:08:29,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-12-02 07:08:29,165 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:08:29,165 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 07:08:29,171 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 07:08:29,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-12-02 07:08:29,366 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:08:29,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:08:29,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1662683394, now seen corresponding path program 1 times [2024-12-02 07:08:29,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:08:29,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619956850] [2024-12-02 07:08:29,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:08:29,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:08:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:08:30,242 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:08:30,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:08:30,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619956850] [2024-12-02 07:08:30,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619956850] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:08:30,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366212777] [2024-12-02 07:08:30,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:08:30,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:08:30,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:08:30,244 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:08:30,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 07:08:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:08:30,386 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-12-02 07:08:30,388 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:08:33,111 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:08:33,111 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:08:35,383 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:08:35,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366212777] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:08:35,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:08:35,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24, 22] total 64 [2024-12-02 07:08:35,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651269502] [2024-12-02 07:08:35,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:08:35,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-12-02 07:08:35,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:08:35,385 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-12-02 07:08:35,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=3655, Unknown=0, NotChecked=0, Total=4032 [2024-12-02 07:08:35,385 INFO L87 Difference]: Start difference. First operand 25298 states and 30679 transitions. Second operand has 64 states, 64 states have (on average 4.0) internal successors, (256), 64 states have internal predecessors, (256), 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) [2024-12-02 07:08:42,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:08:42,787 INFO L93 Difference]: Finished difference Result 37699 states and 45813 transitions. [2024-12-02 07:08:42,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-12-02 07:08:42,788 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.0) internal successors, (256), 64 states have internal predecessors, (256), 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 106 [2024-12-02 07:08:42,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:08:42,810 INFO L225 Difference]: With dead ends: 37699 [2024-12-02 07:08:42,810 INFO L226 Difference]: Without dead ends: 31920 [2024-12-02 07:08:42,817 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3248 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1808, Invalid=11532, Unknown=0, NotChecked=0, Total=13340 [2024-12-02 07:08:42,818 INFO L435 NwaCegarLoop]: 365 mSDtfsCounter, 2123 mSDsluCounter, 9504 mSDsCounter, 0 mSdLazyCounter, 5334 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2123 SdHoareTripleChecker+Valid, 9869 SdHoareTripleChecker+Invalid, 5370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 5334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:08:42,818 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2123 Valid, 9869 Invalid, 5370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 5334 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-12-02 07:08:42,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31920 states. [2024-12-02 07:08:43,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31920 to 25277. [2024-12-02 07:08:43,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25277 states, 25276 states have (on average 1.212850134514955) internal successors, (30656), 25276 states have internal predecessors, (30656), 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) [2024-12-02 07:08:43,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25277 states to 25277 states and 30656 transitions. [2024-12-02 07:08:43,051 INFO L78 Accepts]: Start accepts. Automaton has 25277 states and 30656 transitions. Word has length 106 [2024-12-02 07:08:43,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:08:43,051 INFO L471 AbstractCegarLoop]: Abstraction has 25277 states and 30656 transitions. [2024-12-02 07:08:43,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.0) internal successors, (256), 64 states have internal predecessors, (256), 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) [2024-12-02 07:08:43,051 INFO L276 IsEmpty]: Start isEmpty. Operand 25277 states and 30656 transitions. [2024-12-02 07:08:43,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-12-02 07:08:43,052 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:08:43,052 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 07:08:43,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 07:08:43,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-12-02 07:08:43,253 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:08:43,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:08:43,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1118279012, now seen corresponding path program 1 times [2024-12-02 07:08:43,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:08:43,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701599794] [2024-12-02 07:08:43,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:08:43,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:08:43,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:08:44,276 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:08:44,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:08:44,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701599794] [2024-12-02 07:08:44,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701599794] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:08:44,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353229026] [2024-12-02 07:08:44,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:08:44,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:08:44,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:08:44,278 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:08:44,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 07:08:44,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:08:44,429 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-12-02 07:08:44,430 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:08:47,548 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:08:47,548 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:08:52,713 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:08:52,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353229026] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:08:52,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:08:52,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 30, 30] total 79 [2024-12-02 07:08:52,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386399739] [2024-12-02 07:08:52,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:08:52,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-12-02 07:08:52,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:08:52,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-12-02 07:08:52,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=485, Invalid=5677, Unknown=0, NotChecked=0, Total=6162 [2024-12-02 07:08:52,714 INFO L87 Difference]: Start difference. First operand 25277 states and 30656 transitions. Second operand has 79 states, 79 states have (on average 3.392405063291139) internal successors, (268), 79 states have internal predecessors, (268), 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) [2024-12-02 07:12:11,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:12:11,374 INFO L93 Difference]: Finished difference Result 56220 states and 68224 transitions. [2024-12-02 07:12:11,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 466 states. [2024-12-02 07:12:11,375 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 3.392405063291139) internal successors, (268), 79 states have internal predecessors, (268), 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 106 [2024-12-02 07:12:11,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:12:11,404 INFO L225 Difference]: With dead ends: 56220 [2024-12-02 07:12:11,404 INFO L226 Difference]: Without dead ends: 42981 [2024-12-02 07:12:11,420 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 699 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 540 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125707 ImplicationChecksByTransitivity, 187.1s TimeCoverageRelationStatistics Valid=37087, Invalid=256135, Unknown=0, NotChecked=0, Total=293222 [2024-12-02 07:12:11,421 INFO L435 NwaCegarLoop]: 306 mSDtfsCounter, 8181 mSDsluCounter, 10237 mSDsCounter, 0 mSdLazyCounter, 14769 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8181 SdHoareTripleChecker+Valid, 10543 SdHoareTripleChecker+Invalid, 15120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 14769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2024-12-02 07:12:11,421 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8181 Valid, 10543 Invalid, 15120 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [351 Valid, 14769 Invalid, 0 Unknown, 0 Unchecked, 14.6s Time] [2024-12-02 07:12:11,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42981 states. [2024-12-02 07:12:11,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42981 to 22653. [2024-12-02 07:12:11,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22653 states, 22652 states have (on average 1.2141974218612044) internal successors, (27504), 22652 states have internal predecessors, (27504), 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) [2024-12-02 07:12:11,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22653 states to 22653 states and 27504 transitions. [2024-12-02 07:12:11,636 INFO L78 Accepts]: Start accepts. Automaton has 22653 states and 27504 transitions. Word has length 106 [2024-12-02 07:12:11,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:12:11,636 INFO L471 AbstractCegarLoop]: Abstraction has 22653 states and 27504 transitions. [2024-12-02 07:12:11,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 3.392405063291139) internal successors, (268), 79 states have internal predecessors, (268), 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) [2024-12-02 07:12:11,636 INFO L276 IsEmpty]: Start isEmpty. Operand 22653 states and 27504 transitions. [2024-12-02 07:12:11,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-12-02 07:12:11,637 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:12:11,637 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 07:12:11,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-12-02 07:12:11,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-12-02 07:12:11,837 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:12:11,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:12:11,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1893860638, now seen corresponding path program 1 times [2024-12-02 07:12:11,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:12:11,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418653877] [2024-12-02 07:12:11,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:12:11,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:12:11,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:12:11,894 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 38 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:12:11,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:12:11,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418653877] [2024-12-02 07:12:11,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418653877] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:12:11,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884492116] [2024-12-02 07:12:11,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:12:11,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:12:11,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:12:11,896 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:12:11,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 07:12:12,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:12:12,043 INFO L256 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 07:12:12,044 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:12:12,309 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:12:12,309 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:12:12,435 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:12:12,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884492116] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:12:12,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:12:12,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2024-12-02 07:12:12,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023105025] [2024-12-02 07:12:12,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:12:12,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 07:12:12,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:12:12,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 07:12:12,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-12-02 07:12:12,437 INFO L87 Difference]: Start difference. First operand 22653 states and 27504 transitions. Second operand has 14 states, 14 states have (on average 24.714285714285715) internal successors, (346), 14 states have internal predecessors, (346), 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) [2024-12-02 07:12:12,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:12:12,630 INFO L93 Difference]: Finished difference Result 41779 states and 50528 transitions. [2024-12-02 07:12:12,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 07:12:12,630 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 24.714285714285715) internal successors, (346), 14 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2024-12-02 07:12:12,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:12:12,643 INFO L225 Difference]: With dead ends: 41779 [2024-12-02 07:12:12,643 INFO L226 Difference]: Without dead ends: 19674 [2024-12-02 07:12:12,652 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 247 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-12-02 07:12:12,652 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 457 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:12:12,652 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 381 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:12:12,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19674 states. [2024-12-02 07:12:12,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19674 to 19046. [2024-12-02 07:12:12,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19046 states, 19045 states have (on average 1.1875032817012339) internal successors, (22616), 19045 states have internal predecessors, (22616), 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) [2024-12-02 07:12:12,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19046 states to 19046 states and 22616 transitions. [2024-12-02 07:12:12,785 INFO L78 Accepts]: Start accepts. Automaton has 19046 states and 22616 transitions. Word has length 127 [2024-12-02 07:12:12,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:12:12,785 INFO L471 AbstractCegarLoop]: Abstraction has 19046 states and 22616 transitions. [2024-12-02 07:12:12,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 24.714285714285715) internal successors, (346), 14 states have internal predecessors, (346), 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) [2024-12-02 07:12:12,785 INFO L276 IsEmpty]: Start isEmpty. Operand 19046 states and 22616 transitions. [2024-12-02 07:12:12,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-12-02 07:12:12,787 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:12:12,787 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 07:12:12,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-02 07:12:12,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-12-02 07:12:12,987 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:12:12,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:12:12,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1946393812, now seen corresponding path program 1 times [2024-12-02 07:12:12,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:12:12,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908836062] [2024-12-02 07:12:12,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:12:12,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:12:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:12:13,051 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-12-02 07:12:13,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:12:13,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908836062] [2024-12-02 07:12:13,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908836062] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:12:13,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:12:13,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:12:13,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476491473] [2024-12-02 07:12:13,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:12:13,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:12:13,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:12:13,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:12:13,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:12:13,052 INFO L87 Difference]: Start difference. First operand 19046 states and 22616 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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) [2024-12-02 07:12:13,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:12:13,087 INFO L93 Difference]: Finished difference Result 24375 states and 29001 transitions. [2024-12-02 07:12:13,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:12:13,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 149 [2024-12-02 07:12:13,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:12:13,090 INFO L225 Difference]: With dead ends: 24375 [2024-12-02 07:12:13,090 INFO L226 Difference]: Without dead ends: 5767 [2024-12-02 07:12:13,095 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 [2024-12-02 07:12:13,095 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 41 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:12:13,095 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 192 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:12:13,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5767 states. [2024-12-02 07:12:13,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5767 to 5158. [2024-12-02 07:12:13,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5158 states, 5157 states have (on average 1.1714174907892185) internal successors, (6041), 5157 states have internal predecessors, (6041), 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) [2024-12-02 07:12:13,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5158 states to 5158 states and 6041 transitions. [2024-12-02 07:12:13,128 INFO L78 Accepts]: Start accepts. Automaton has 5158 states and 6041 transitions. Word has length 149 [2024-12-02 07:12:13,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:12:13,128 INFO L471 AbstractCegarLoop]: Abstraction has 5158 states and 6041 transitions. [2024-12-02 07:12:13,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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) [2024-12-02 07:12:13,128 INFO L276 IsEmpty]: Start isEmpty. Operand 5158 states and 6041 transitions. [2024-12-02 07:12:13,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-12-02 07:12:13,129 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:12:13,129 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:12:13,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-12-02 07:12:13,130 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:12:13,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:12:13,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1608414535, now seen corresponding path program 1 times [2024-12-02 07:12:13,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:12:13,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480785063] [2024-12-02 07:12:13,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:12:13,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:12:13,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:12:13,604 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:12:13,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:12:13,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480785063] [2024-12-02 07:12:13,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480785063] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:12:13,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025387202] [2024-12-02 07:12:13,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:12:13,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:12:13,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:12:13,606 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:12:13,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 07:12:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:12:13,769 INFO L256 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-12-02 07:12:13,771 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:12:17,219 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 58 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 07:12:17,219 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:12:23,518 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 33 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:12:23,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025387202] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:12:23,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:12:23,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 31, 33] total 79 [2024-12-02 07:12:23,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125262978] [2024-12-02 07:12:23,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:12:23,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-12-02 07:12:23,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:12:23,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-12-02 07:12:23,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=839, Invalid=5323, Unknown=0, NotChecked=0, Total=6162 [2024-12-02 07:12:23,520 INFO L87 Difference]: Start difference. First operand 5158 states and 6041 transitions. Second operand has 79 states, 79 states have (on average 5.063291139240507) internal successors, (400), 79 states have internal predecessors, (400), 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) [2024-12-02 07:14:35,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:14:35,444 INFO L93 Difference]: Finished difference Result 13462 states and 16069 transitions. [2024-12-02 07:14:35,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 292 states. [2024-12-02 07:14:35,445 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 5.063291139240507) internal successors, (400), 79 states have internal predecessors, (400), 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 150 [2024-12-02 07:14:35,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:14:35,450 INFO L225 Difference]: With dead ends: 13462 [2024-12-02 07:14:35,451 INFO L226 Difference]: Without dead ends: 11495 [2024-12-02 07:14:35,455 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 362 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48304 ImplicationChecksByTransitivity, 128.2s TimeCoverageRelationStatistics Valid=15050, Invalid=117082, Unknown=0, NotChecked=0, Total=132132 [2024-12-02 07:14:35,456 INFO L435 NwaCegarLoop]: 240 mSDtfsCounter, 6949 mSDsluCounter, 7210 mSDsCounter, 0 mSdLazyCounter, 9154 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6949 SdHoareTripleChecker+Valid, 7450 SdHoareTripleChecker+Invalid, 9519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 9154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2024-12-02 07:14:35,456 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6949 Valid, 7450 Invalid, 9519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 9154 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2024-12-02 07:14:35,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11495 states. [2024-12-02 07:14:35,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11495 to 9217. [2024-12-02 07:14:35,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9217 states, 9216 states have (on average 1.1819661458333333) internal successors, (10893), 9216 states have internal predecessors, (10893), 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) [2024-12-02 07:14:35,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9217 states to 9217 states and 10893 transitions. [2024-12-02 07:14:35,516 INFO L78 Accepts]: Start accepts. Automaton has 9217 states and 10893 transitions. Word has length 150 [2024-12-02 07:14:35,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:14:35,516 INFO L471 AbstractCegarLoop]: Abstraction has 9217 states and 10893 transitions. [2024-12-02 07:14:35,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 5.063291139240507) internal successors, (400), 79 states have internal predecessors, (400), 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) [2024-12-02 07:14:35,516 INFO L276 IsEmpty]: Start isEmpty. Operand 9217 states and 10893 transitions. [2024-12-02 07:14:35,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-12-02 07:14:35,517 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:14:35,517 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:14:35,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-12-02 07:14:35,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:14:35,717 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:14:35,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:14:35,717 INFO L85 PathProgramCache]: Analyzing trace with hash 2132139618, now seen corresponding path program 1 times [2024-12-02 07:14:35,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:14:35,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77457899] [2024-12-02 07:14:35,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:14:35,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:14:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:14:36,700 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 34 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:14:36,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:14:36,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77457899] [2024-12-02 07:14:36,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77457899] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:14:36,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419108455] [2024-12-02 07:14:36,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:14:36,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:14:36,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:14:36,702 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:14:36,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 07:14:36,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:14:36,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 07:14:36,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:14:37,575 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 38 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:14:37,575 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:14:39,416 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 34 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:14:39,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419108455] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:14:39,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:14:39,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 11, 11] total 40 [2024-12-02 07:14:39,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886484552] [2024-12-02 07:14:39,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:14:39,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-12-02 07:14:39,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:14:39,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-12-02 07:14:39,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1507, Unknown=0, NotChecked=0, Total=1640 [2024-12-02 07:14:39,418 INFO L87 Difference]: Start difference. First operand 9217 states and 10893 transitions. Second operand has 41 states, 41 states have (on average 9.682926829268293) internal successors, (397), 40 states have internal predecessors, (397), 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) [2024-12-02 07:14:44,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:14:44,394 INFO L93 Difference]: Finished difference Result 25006 states and 29762 transitions. [2024-12-02 07:14:44,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-12-02 07:14:44,395 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 9.682926829268293) internal successors, (397), 40 states have internal predecessors, (397), 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 150 [2024-12-02 07:14:44,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:14:44,404 INFO L225 Difference]: With dead ends: 25006 [2024-12-02 07:14:44,404 INFO L226 Difference]: Without dead ends: 17576 [2024-12-02 07:14:44,408 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2300 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1418, Invalid=9088, Unknown=0, NotChecked=0, Total=10506 [2024-12-02 07:14:44,408 INFO L435 NwaCegarLoop]: 201 mSDtfsCounter, 1800 mSDsluCounter, 4168 mSDsCounter, 0 mSdLazyCounter, 4479 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1800 SdHoareTripleChecker+Valid, 4369 SdHoareTripleChecker+Invalid, 4544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 4479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:14:44,408 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1800 Valid, 4369 Invalid, 4544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 4479 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-12-02 07:14:44,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17576 states. [2024-12-02 07:14:44,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17576 to 9217. [2024-12-02 07:14:44,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9217 states, 9216 states have (on average 1.1729600694444444) internal successors, (10810), 9216 states have internal predecessors, (10810), 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) [2024-12-02 07:14:44,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9217 states to 9217 states and 10810 transitions. [2024-12-02 07:14:44,492 INFO L78 Accepts]: Start accepts. Automaton has 9217 states and 10810 transitions. Word has length 150 [2024-12-02 07:14:44,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:14:44,492 INFO L471 AbstractCegarLoop]: Abstraction has 9217 states and 10810 transitions. [2024-12-02 07:14:44,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 9.682926829268293) internal successors, (397), 40 states have internal predecessors, (397), 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) [2024-12-02 07:14:44,492 INFO L276 IsEmpty]: Start isEmpty. Operand 9217 states and 10810 transitions. [2024-12-02 07:14:44,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-12-02 07:14:44,493 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:14:44,493 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:14:44,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-12-02 07:14:44,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:14:44,694 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:14:44,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:14:44,694 INFO L85 PathProgramCache]: Analyzing trace with hash -2042846339, now seen corresponding path program 1 times [2024-12-02 07:14:44,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:14:44,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787285821] [2024-12-02 07:14:44,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:14:44,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:14:44,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:14:45,267 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 64 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 07:14:45,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:14:45,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787285821] [2024-12-02 07:14:45,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787285821] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:14:45,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002611910] [2024-12-02 07:14:45,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:14:45,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:14:45,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:14:45,269 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:14:45,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-02 07:14:45,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:14:45,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-12-02 07:14:45,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:14:49,385 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 25 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:14:49,386 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:14:57,098 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 16 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:14:57,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002611910] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:14:57,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:14:57,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 35, 31] total 81 [2024-12-02 07:14:57,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760092904] [2024-12-02 07:14:57,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:14:57,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-12-02 07:14:57,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:14:57,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-12-02 07:14:57,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=499, Invalid=5981, Unknown=0, NotChecked=0, Total=6480 [2024-12-02 07:14:57,100 INFO L87 Difference]: Start difference. First operand 9217 states and 10810 transitions. Second operand has 81 states, 81 states have (on average 5.111111111111111) internal successors, (414), 81 states have internal predecessors, (414), 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) [2024-12-02 07:16:35,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:16:35,027 INFO L93 Difference]: Finished difference Result 18634 states and 21624 transitions. [2024-12-02 07:16:35,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 263 states. [2024-12-02 07:16:35,028 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 5.111111111111111) internal successors, (414), 81 states have internal predecessors, (414), 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 151 [2024-12-02 07:16:35,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:16:35,035 INFO L225 Difference]: With dead ends: 18634 [2024-12-02 07:16:35,035 INFO L226 Difference]: Without dead ends: 14578 [2024-12-02 07:16:35,039 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 338 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40583 ImplicationChecksByTransitivity, 93.0s TimeCoverageRelationStatistics Valid=16079, Invalid=99181, Unknown=0, NotChecked=0, Total=115260 [2024-12-02 07:16:35,039 INFO L435 NwaCegarLoop]: 279 mSDtfsCounter, 8197 mSDsluCounter, 9514 mSDsCounter, 0 mSdLazyCounter, 10908 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8197 SdHoareTripleChecker+Valid, 9793 SdHoareTripleChecker+Invalid, 11270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 10908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:16:35,040 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8197 Valid, 9793 Invalid, 11270 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [362 Valid, 10908 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2024-12-02 07:16:35,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14578 states. [2024-12-02 07:16:35,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14578 to 7424. [2024-12-02 07:16:35,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7424 states, 7423 states have (on average 1.1686649602586556) internal successors, (8675), 7423 states have internal predecessors, (8675), 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) [2024-12-02 07:16:35,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7424 states to 7424 states and 8675 transitions. [2024-12-02 07:16:35,109 INFO L78 Accepts]: Start accepts. Automaton has 7424 states and 8675 transitions. Word has length 151 [2024-12-02 07:16:35,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:16:35,109 INFO L471 AbstractCegarLoop]: Abstraction has 7424 states and 8675 transitions. [2024-12-02 07:16:35,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 5.111111111111111) internal successors, (414), 81 states have internal predecessors, (414), 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) [2024-12-02 07:16:35,110 INFO L276 IsEmpty]: Start isEmpty. Operand 7424 states and 8675 transitions. [2024-12-02 07:16:35,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-12-02 07:16:35,110 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:16:35,111 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:16:35,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-12-02 07:16:35,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:16:35,311 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:16:35,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:16:35,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1381005304, now seen corresponding path program 1 times [2024-12-02 07:16:35,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:16:35,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461247006] [2024-12-02 07:16:35,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:16:35,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:16:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:16:36,158 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 31 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:16:36,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:16:36,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461247006] [2024-12-02 07:16:36,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461247006] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:16:36,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772178677] [2024-12-02 07:16:36,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:16:36,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:16:36,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:16:36,159 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:16:36,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-02 07:16:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:16:36,336 INFO L256 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 07:16:36,339 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:16:37,163 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 33 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:16:37,163 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:16:38,767 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 31 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:16:38,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772178677] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:16:38,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:16:38,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 11, 11] total 35 [2024-12-02 07:16:38,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320298440] [2024-12-02 07:16:38,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:16:38,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-12-02 07:16:38,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:16:38,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-12-02 07:16:38,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1131, Unknown=0, NotChecked=0, Total=1260 [2024-12-02 07:16:38,769 INFO L87 Difference]: Start difference. First operand 7424 states and 8675 transitions. Second operand has 36 states, 36 states have (on average 10.722222222222221) internal successors, (386), 35 states have internal predecessors, (386), 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) [2024-12-02 07:16:44,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:16:44,156 INFO L93 Difference]: Finished difference Result 15129 states and 17848 transitions. [2024-12-02 07:16:44,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-12-02 07:16:44,157 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 10.722222222222221) internal successors, (386), 35 states have internal predecessors, (386), 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 152 [2024-12-02 07:16:44,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:16:44,163 INFO L225 Difference]: With dead ends: 15129 [2024-12-02 07:16:44,163 INFO L226 Difference]: Without dead ends: 10348 [2024-12-02 07:16:44,166 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2096 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1498, Invalid=7622, Unknown=0, NotChecked=0, Total=9120 [2024-12-02 07:16:44,166 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 1990 mSDsluCounter, 2232 mSDsCounter, 0 mSdLazyCounter, 2157 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1990 SdHoareTripleChecker+Valid, 2397 SdHoareTripleChecker+Invalid, 2232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:16:44,166 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1990 Valid, 2397 Invalid, 2232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2157 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 07:16:44,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10348 states. [2024-12-02 07:16:44,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10348 to 7424. [2024-12-02 07:16:44,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7424 states, 7423 states have (on average 1.1605819749427455) internal successors, (8615), 7423 states have internal predecessors, (8615), 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) [2024-12-02 07:16:44,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7424 states to 7424 states and 8615 transitions. [2024-12-02 07:16:44,227 INFO L78 Accepts]: Start accepts. Automaton has 7424 states and 8615 transitions. Word has length 152 [2024-12-02 07:16:44,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:16:44,227 INFO L471 AbstractCegarLoop]: Abstraction has 7424 states and 8615 transitions. [2024-12-02 07:16:44,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 10.722222222222221) internal successors, (386), 35 states have internal predecessors, (386), 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) [2024-12-02 07:16:44,228 INFO L276 IsEmpty]: Start isEmpty. Operand 7424 states and 8615 transitions. [2024-12-02 07:16:44,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-12-02 07:16:44,228 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:16:44,228 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:16:44,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-12-02 07:16:44,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:16:44,429 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:16:44,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:16:44,429 INFO L85 PathProgramCache]: Analyzing trace with hash -354110177, now seen corresponding path program 1 times [2024-12-02 07:16:44,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:16:44,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202532241] [2024-12-02 07:16:44,430 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:16:44,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:16:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:16:45,029 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 59 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 07:16:45,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:16:45,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202532241] [2024-12-02 07:16:45,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202532241] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:16:45,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15442581] [2024-12-02 07:16:45,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:16:45,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:16:45,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:16:45,031 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:16:45,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-12-02 07:16:45,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:16:45,209 INFO L256 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 07:16:45,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:16:46,092 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 59 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 07:16:46,093 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:16:46,821 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 58 proven. 6 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 07:16:46,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15442581] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:16:46,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:16:46,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 14] total 41 [2024-12-02 07:16:46,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682636132] [2024-12-02 07:16:46,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:16:46,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-12-02 07:16:46,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:16:46,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-12-02 07:16:46,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1501, Unknown=0, NotChecked=0, Total=1640 [2024-12-02 07:16:46,822 INFO L87 Difference]: Start difference. First operand 7424 states and 8615 transitions. Second operand has 41 states, 41 states have (on average 7.390243902439025) internal successors, (303), 41 states have internal predecessors, (303), 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) [2024-12-02 07:16:49,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:16:49,031 INFO L93 Difference]: Finished difference Result 9501 states and 11070 transitions. [2024-12-02 07:16:49,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-12-02 07:16:49,031 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 7.390243902439025) internal successors, (303), 41 states have internal predecessors, (303), 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 152 [2024-12-02 07:16:49,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:16:49,035 INFO L225 Difference]: With dead ends: 9501 [2024-12-02 07:16:49,035 INFO L226 Difference]: Without dead ends: 7132 [2024-12-02 07:16:49,036 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=439, Invalid=3467, Unknown=0, NotChecked=0, Total=3906 [2024-12-02 07:16:49,036 INFO L435 NwaCegarLoop]: 208 mSDtfsCounter, 657 mSDsluCounter, 4903 mSDsCounter, 0 mSdLazyCounter, 2209 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 5111 SdHoareTripleChecker+Invalid, 2224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:16:49,037 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 5111 Invalid, 2224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2209 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 07:16:49,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7132 states. [2024-12-02 07:16:49,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7132 to 5800. [2024-12-02 07:16:49,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5800 states, 5799 states have (on average 1.1610622521124332) internal successors, (6733), 5799 states have internal predecessors, (6733), 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) [2024-12-02 07:16:49,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5800 states to 5800 states and 6733 transitions. [2024-12-02 07:16:49,075 INFO L78 Accepts]: Start accepts. Automaton has 5800 states and 6733 transitions. Word has length 152 [2024-12-02 07:16:49,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:16:49,075 INFO L471 AbstractCegarLoop]: Abstraction has 5800 states and 6733 transitions. [2024-12-02 07:16:49,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 7.390243902439025) internal successors, (303), 41 states have internal predecessors, (303), 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) [2024-12-02 07:16:49,075 INFO L276 IsEmpty]: Start isEmpty. Operand 5800 states and 6733 transitions. [2024-12-02 07:16:49,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-12-02 07:16:49,076 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:16:49,076 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:16:49,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-12-02 07:16:49,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:16:49,276 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:16:49,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:16:49,276 INFO L85 PathProgramCache]: Analyzing trace with hash 607991885, now seen corresponding path program 1 times [2024-12-02 07:16:49,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:16:49,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513615147] [2024-12-02 07:16:49,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:16:49,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:16:49,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:16:49,716 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 22 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:16:49,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:16:49,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513615147] [2024-12-02 07:16:49,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513615147] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:16:49,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338526320] [2024-12-02 07:16:49,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:16:49,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:16:49,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:16:49,718 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:16:49,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-12-02 07:16:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:16:49,899 INFO L256 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-12-02 07:16:49,901 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:16:52,507 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 22 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:16:52,507 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:16:55,659 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 22 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:16:55,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338526320] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:16:55,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:16:55,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 23, 23] total 54 [2024-12-02 07:16:55,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716767509] [2024-12-02 07:16:55,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:16:55,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-12-02 07:16:55,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:16:55,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-12-02 07:16:55,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=469, Invalid=2501, Unknown=0, NotChecked=0, Total=2970 [2024-12-02 07:16:55,660 INFO L87 Difference]: Start difference. First operand 5800 states and 6733 transitions. Second operand has 55 states, 55 states have (on average 7.381818181818182) internal successors, (406), 54 states have internal predecessors, (406), 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) [2024-12-02 07:16:59,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:16:59,257 INFO L93 Difference]: Finished difference Result 10139 states and 11854 transitions. [2024-12-02 07:16:59,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-12-02 07:16:59,257 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 7.381818181818182) internal successors, (406), 54 states have internal predecessors, (406), 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 152 [2024-12-02 07:16:59,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:16:59,260 INFO L225 Difference]: With dead ends: 10139 [2024-12-02 07:16:59,260 INFO L226 Difference]: Without dead ends: 6407 [2024-12-02 07:16:59,262 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2121 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1756, Invalid=6986, Unknown=0, NotChecked=0, Total=8742 [2024-12-02 07:16:59,262 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 1497 mSDsluCounter, 2051 mSDsCounter, 0 mSdLazyCounter, 2803 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 2137 SdHoareTripleChecker+Invalid, 2864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-02 07:16:59,262 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1497 Valid, 2137 Invalid, 2864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2803 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-02 07:16:59,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6407 states. [2024-12-02 07:16:59,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6407 to 5757. [2024-12-02 07:16:59,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5757 states, 5756 states have (on average 1.1525364836692147) internal successors, (6634), 5756 states have internal predecessors, (6634), 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) [2024-12-02 07:16:59,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5757 states to 5757 states and 6634 transitions. [2024-12-02 07:16:59,302 INFO L78 Accepts]: Start accepts. Automaton has 5757 states and 6634 transitions. Word has length 152 [2024-12-02 07:16:59,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:16:59,302 INFO L471 AbstractCegarLoop]: Abstraction has 5757 states and 6634 transitions. [2024-12-02 07:16:59,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 7.381818181818182) internal successors, (406), 54 states have internal predecessors, (406), 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) [2024-12-02 07:16:59,302 INFO L276 IsEmpty]: Start isEmpty. Operand 5757 states and 6634 transitions. [2024-12-02 07:16:59,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-12-02 07:16:59,303 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:16:59,303 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:16:59,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-12-02 07:16:59,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-12-02 07:16:59,503 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:16:59,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:16:59,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1754801035, now seen corresponding path program 1 times [2024-12-02 07:16:59,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:16:59,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380837746] [2024-12-02 07:16:59,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:16:59,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:16:59,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:17:00,080 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 18 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:17:00,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:17:00,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380837746] [2024-12-02 07:17:00,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380837746] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:17:00,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771349601] [2024-12-02 07:17:00,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:17:00,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:17:00,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:17:00,082 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:17:00,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-12-02 07:17:00,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:17:00,284 INFO L256 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-12-02 07:17:00,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:17:01,589 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 18 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:17:01,589 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:17:04,061 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 16 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:17:04,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771349601] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:17:04,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:17:04,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 50 [2024-12-02 07:17:04,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961593782] [2024-12-02 07:17:04,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:17:04,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-12-02 07:17:04,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:17:04,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-12-02 07:17:04,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=2204, Unknown=0, NotChecked=0, Total=2450 [2024-12-02 07:17:04,062 INFO L87 Difference]: Start difference. First operand 5757 states and 6634 transitions. Second operand has 50 states, 50 states have (on average 8.5) internal successors, (425), 50 states have internal predecessors, (425), 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) [2024-12-02 07:17:05,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:17:05,649 INFO L93 Difference]: Finished difference Result 9396 states and 10867 transitions. [2024-12-02 07:17:05,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-12-02 07:17:05,650 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 8.5) internal successors, (425), 50 states have internal predecessors, (425), 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 152 [2024-12-02 07:17:05,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:17:05,653 INFO L225 Difference]: With dead ends: 9396 [2024-12-02 07:17:05,653 INFO L226 Difference]: Without dead ends: 5914 [2024-12-02 07:17:05,655 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 272 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1425 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=721, Invalid=4829, Unknown=0, NotChecked=0, Total=5550 [2024-12-02 07:17:05,656 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 767 mSDsluCounter, 4406 mSDsCounter, 0 mSdLazyCounter, 1632 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 4571 SdHoareTripleChecker+Invalid, 1649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 07:17:05,656 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 4571 Invalid, 1649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1632 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 07:17:05,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5914 states. [2024-12-02 07:17:05,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5914 to 4487. [2024-12-02 07:17:05,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4487 states, 4486 states have (on average 1.1417744092732947) internal successors, (5122), 4486 states have internal predecessors, (5122), 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) [2024-12-02 07:17:05,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4487 states to 4487 states and 5122 transitions. [2024-12-02 07:17:05,695 INFO L78 Accepts]: Start accepts. Automaton has 4487 states and 5122 transitions. Word has length 152 [2024-12-02 07:17:05,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:17:05,695 INFO L471 AbstractCegarLoop]: Abstraction has 4487 states and 5122 transitions. [2024-12-02 07:17:05,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 8.5) internal successors, (425), 50 states have internal predecessors, (425), 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) [2024-12-02 07:17:05,696 INFO L276 IsEmpty]: Start isEmpty. Operand 4487 states and 5122 transitions. [2024-12-02 07:17:05,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 07:17:05,697 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:17:05,697 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:17:05,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-12-02 07:17:05,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-12-02 07:17:05,897 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:17:05,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:17:05,897 INFO L85 PathProgramCache]: Analyzing trace with hash -888218388, now seen corresponding path program 1 times [2024-12-02 07:17:05,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:17:05,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345469421] [2024-12-02 07:17:05,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:17:05,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:17:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:17:06,514 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 31 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:17:06,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:17:06,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345469421] [2024-12-02 07:17:06,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345469421] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:17:06,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216184857] [2024-12-02 07:17:06,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:17:06,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:17:06,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:17:06,516 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:17:06,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-12-02 07:17:06,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:17:06,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-12-02 07:17:06,707 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:17:10,458 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 31 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:17:10,458 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:17:15,320 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 31 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:17:15,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216184857] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:17:15,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:17:15,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 35, 31] total 79 [2024-12-02 07:17:15,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469639535] [2024-12-02 07:17:15,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:17:15,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-12-02 07:17:15,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:17:15,321 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-12-02 07:17:15,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=507, Invalid=5655, Unknown=0, NotChecked=0, Total=6162 [2024-12-02 07:17:15,321 INFO L87 Difference]: Start difference. First operand 4487 states and 5122 transitions. Second operand has 79 states, 79 states have (on average 4.974683544303797) internal successors, (393), 79 states have internal predecessors, (393), 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) [2024-12-02 07:18:27,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:18:27,735 INFO L93 Difference]: Finished difference Result 10861 states and 12411 transitions. [2024-12-02 07:18:27,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 251 states. [2024-12-02 07:18:27,736 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 4.974683544303797) internal successors, (393), 79 states have internal predecessors, (393), 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 153 [2024-12-02 07:18:27,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:18:27,741 INFO L225 Difference]: With dead ends: 10861 [2024-12-02 07:18:27,741 INFO L226 Difference]: Without dead ends: 9707 [2024-12-02 07:18:27,744 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 244 SyntacticMatches, 2 SemanticMatches, 316 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36731 ImplicationChecksByTransitivity, 68.2s TimeCoverageRelationStatistics Valid=12734, Invalid=88072, Unknown=0, NotChecked=0, Total=100806 [2024-12-02 07:18:27,745 INFO L435 NwaCegarLoop]: 277 mSDtfsCounter, 5271 mSDsluCounter, 8610 mSDsCounter, 0 mSdLazyCounter, 8907 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5271 SdHoareTripleChecker+Valid, 8887 SdHoareTripleChecker+Invalid, 9144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 8907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:18:27,745 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5271 Valid, 8887 Invalid, 9144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 8907 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2024-12-02 07:18:27,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9707 states. [2024-12-02 07:18:27,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9707 to 4571. [2024-12-02 07:18:27,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4571 states, 4570 states have (on average 1.1407002188183808) internal successors, (5213), 4570 states have internal predecessors, (5213), 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) [2024-12-02 07:18:27,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4571 states to 4571 states and 5213 transitions. [2024-12-02 07:18:27,783 INFO L78 Accepts]: Start accepts. Automaton has 4571 states and 5213 transitions. Word has length 153 [2024-12-02 07:18:27,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:18:27,783 INFO L471 AbstractCegarLoop]: Abstraction has 4571 states and 5213 transitions. [2024-12-02 07:18:27,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 4.974683544303797) internal successors, (393), 79 states have internal predecessors, (393), 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) [2024-12-02 07:18:27,783 INFO L276 IsEmpty]: Start isEmpty. Operand 4571 states and 5213 transitions. [2024-12-02 07:18:27,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 07:18:27,784 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:18:27,784 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:18:27,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-12-02 07:18:27,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:18:27,985 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:18:27,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:18:27,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1302789524, now seen corresponding path program 1 times [2024-12-02 07:18:27,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:18:27,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157709857] [2024-12-02 07:18:27,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:18:27,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:18:28,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:18:28,144 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 12 proven. 74 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-02 07:18:28,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:18:28,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157709857] [2024-12-02 07:18:28,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157709857] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:18:28,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627350807] [2024-12-02 07:18:28,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:18:28,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:18:28,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:18:28,146 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:18:28,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-12-02 07:18:28,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:18:28,352 INFO L256 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 07:18:28,354 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:18:28,520 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 12 proven. 74 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-02 07:18:28,520 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:18:28,950 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 12 proven. 74 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-02 07:18:28,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627350807] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:18:28,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:18:28,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 8] total 14 [2024-12-02 07:18:28,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098078882] [2024-12-02 07:18:28,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:18:28,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 07:18:28,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:18:28,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 07:18:28,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2024-12-02 07:18:28,951 INFO L87 Difference]: Start difference. First operand 4571 states and 5213 transitions. Second operand has 14 states, 14 states have (on average 23.5) internal successors, (329), 14 states have internal predecessors, (329), 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) [2024-12-02 07:18:29,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:18:29,063 INFO L93 Difference]: Finished difference Result 11175 states and 13196 transitions. [2024-12-02 07:18:29,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 07:18:29,063 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 23.5) internal successors, (329), 14 states have internal predecessors, (329), 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 153 [2024-12-02 07:18:29,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:18:29,067 INFO L225 Difference]: With dead ends: 11175 [2024-12-02 07:18:29,067 INFO L226 Difference]: Without dead ends: 7027 [2024-12-02 07:18:29,068 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2024-12-02 07:18:29,069 INFO L435 NwaCegarLoop]: 161 mSDtfsCounter, 359 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:18:29,069 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 965 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:18:29,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7027 states. [2024-12-02 07:18:29,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7027 to 7019. [2024-12-02 07:18:29,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7019 states, 7018 states have (on average 1.1225420347677402) internal successors, (7878), 7018 states have internal predecessors, (7878), 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) [2024-12-02 07:18:29,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7019 states to 7019 states and 7878 transitions. [2024-12-02 07:18:29,110 INFO L78 Accepts]: Start accepts. Automaton has 7019 states and 7878 transitions. Word has length 153 [2024-12-02 07:18:29,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:18:29,110 INFO L471 AbstractCegarLoop]: Abstraction has 7019 states and 7878 transitions. [2024-12-02 07:18:29,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 23.5) internal successors, (329), 14 states have internal predecessors, (329), 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) [2024-12-02 07:18:29,110 INFO L276 IsEmpty]: Start isEmpty. Operand 7019 states and 7878 transitions. [2024-12-02 07:18:29,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 07:18:29,111 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:18:29,111 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:18:29,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-12-02 07:18:29,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:18:29,311 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:18:29,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:18:29,312 INFO L85 PathProgramCache]: Analyzing trace with hash 2019714066, now seen corresponding path program 1 times [2024-12-02 07:18:29,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:18:29,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551625656] [2024-12-02 07:18:29,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:18:29,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:18:29,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:18:30,117 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 22 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:18:30,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:18:30,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551625656] [2024-12-02 07:18:30,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551625656] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:18:30,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970257590] [2024-12-02 07:18:30,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:18:30,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:18:30,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:18:30,119 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:18:30,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-12-02 07:18:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:18:30,318 INFO L256 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-12-02 07:18:30,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:18:31,677 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 22 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:18:31,677 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:18:33,417 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 22 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:18:33,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970257590] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:18:33,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:18:33,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19, 17] total 46 [2024-12-02 07:18:33,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041211435] [2024-12-02 07:18:33,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:18:33,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-12-02 07:18:33,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:18:33,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-12-02 07:18:33,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1913, Unknown=0, NotChecked=0, Total=2070 [2024-12-02 07:18:33,419 INFO L87 Difference]: Start difference. First operand 7019 states and 7878 transitions. Second operand has 46 states, 46 states have (on average 8.195652173913043) internal successors, (377), 46 states have internal predecessors, (377), 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) [2024-12-02 07:18:38,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:18:38,443 INFO L93 Difference]: Finished difference Result 11556 states and 13120 transitions. [2024-12-02 07:18:38,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-12-02 07:18:38,444 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 8.195652173913043) internal successors, (377), 46 states have internal predecessors, (377), 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 153 [2024-12-02 07:18:38,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:18:38,448 INFO L225 Difference]: With dead ends: 11556 [2024-12-02 07:18:38,448 INFO L226 Difference]: Without dead ends: 9486 [2024-12-02 07:18:38,450 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 281 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2128 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1066, Invalid=8636, Unknown=0, NotChecked=0, Total=9702 [2024-12-02 07:18:38,450 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 1376 mSDsluCounter, 4913 mSDsCounter, 0 mSdLazyCounter, 2839 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1376 SdHoareTripleChecker+Valid, 5101 SdHoareTripleChecker+Invalid, 2873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-02 07:18:38,450 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1376 Valid, 5101 Invalid, 2873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2839 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-02 07:18:38,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9486 states. [2024-12-02 07:18:38,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9486 to 7184. [2024-12-02 07:18:38,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7184 states, 7183 states have (on average 1.1211193094807184) internal successors, (8053), 7183 states have internal predecessors, (8053), 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) [2024-12-02 07:18:38,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7184 states to 7184 states and 8053 transitions. [2024-12-02 07:18:38,498 INFO L78 Accepts]: Start accepts. Automaton has 7184 states and 8053 transitions. Word has length 153 [2024-12-02 07:18:38,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:18:38,498 INFO L471 AbstractCegarLoop]: Abstraction has 7184 states and 8053 transitions. [2024-12-02 07:18:38,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 8.195652173913043) internal successors, (377), 46 states have internal predecessors, (377), 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) [2024-12-02 07:18:38,498 INFO L276 IsEmpty]: Start isEmpty. Operand 7184 states and 8053 transitions. [2024-12-02 07:18:38,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 07:18:38,499 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:18:38,499 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:18:38,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-12-02 07:18:38,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:18:38,699 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:18:38,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:18:38,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1977027338, now seen corresponding path program 1 times [2024-12-02 07:18:38,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:18:38,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889816044] [2024-12-02 07:18:38,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:18:38,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:18:38,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:18:40,497 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 35 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:18:40,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:18:40,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889816044] [2024-12-02 07:18:40,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889816044] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:18:40,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852948308] [2024-12-02 07:18:40,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:18:40,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:18:40,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:18:40,499 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:18:40,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-12-02 07:18:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:18:40,699 INFO L256 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-12-02 07:18:40,701 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:18:42,991 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 35 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:18:42,991 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:18:47,965 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 25 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:18:47,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852948308] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:18:47,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:18:47,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 23, 22] total 75 [2024-12-02 07:18:47,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011463421] [2024-12-02 07:18:47,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:18:47,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-12-02 07:18:47,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:18:47,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-12-02 07:18:47,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=5253, Unknown=0, NotChecked=0, Total=5550 [2024-12-02 07:18:47,966 INFO L87 Difference]: Start difference. First operand 7184 states and 8053 transitions. Second operand has 75 states, 75 states have (on average 5.693333333333333) internal successors, (427), 75 states have internal predecessors, (427), 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) [2024-12-02 07:19:10,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:19:10,556 INFO L93 Difference]: Finished difference Result 11939 states and 13378 transitions. [2024-12-02 07:19:10,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2024-12-02 07:19:10,557 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 5.693333333333333) internal successors, (427), 75 states have internal predecessors, (427), 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 153 [2024-12-02 07:19:10,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:19:10,561 INFO L225 Difference]: With dead ends: 11939 [2024-12-02 07:19:10,561 INFO L226 Difference]: Without dead ends: 8896 [2024-12-02 07:19:10,565 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12293 ImplicationChecksByTransitivity, 21.0s TimeCoverageRelationStatistics Valid=5025, Invalid=42717, Unknown=0, NotChecked=0, Total=47742 [2024-12-02 07:19:10,565 INFO L435 NwaCegarLoop]: 296 mSDtfsCounter, 2191 mSDsluCounter, 12680 mSDsCounter, 0 mSdLazyCounter, 7835 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2191 SdHoareTripleChecker+Valid, 12976 SdHoareTripleChecker+Invalid, 7907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 7835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-12-02 07:19:10,565 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2191 Valid, 12976 Invalid, 7907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 7835 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-12-02 07:19:10,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8896 states. [2024-12-02 07:19:10,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8896 to 7165. [2024-12-02 07:19:10,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7165 states, 7164 states have (on average 1.1134840871021776) internal successors, (7977), 7164 states have internal predecessors, (7977), 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) [2024-12-02 07:19:10,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7165 states to 7165 states and 7977 transitions. [2024-12-02 07:19:10,611 INFO L78 Accepts]: Start accepts. Automaton has 7165 states and 7977 transitions. Word has length 153 [2024-12-02 07:19:10,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:19:10,611 INFO L471 AbstractCegarLoop]: Abstraction has 7165 states and 7977 transitions. [2024-12-02 07:19:10,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 5.693333333333333) internal successors, (427), 75 states have internal predecessors, (427), 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) [2024-12-02 07:19:10,612 INFO L276 IsEmpty]: Start isEmpty. Operand 7165 states and 7977 transitions. [2024-12-02 07:19:10,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 07:19:10,612 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:19:10,612 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:19:10,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-12-02 07:19:10,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:19:10,813 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:19:10,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:19:10,813 INFO L85 PathProgramCache]: Analyzing trace with hash 971232180, now seen corresponding path program 1 times [2024-12-02 07:19:10,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:19:10,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378549000] [2024-12-02 07:19:10,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:19:10,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:19:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:19:11,586 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 40 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:19:11,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:19:11,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378549000] [2024-12-02 07:19:11,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378549000] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:19:11,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838945277] [2024-12-02 07:19:11,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:19:11,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:19:11,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:19:11,588 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:19:11,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b25b47b5-5312-432d-ad50-d528ed2b41fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-12-02 07:19:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:19:11,797 INFO L256 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-12-02 07:19:11,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:19:15,032 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 40 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:19:15,032 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:19:20,409 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 31 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:19:20,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838945277] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:19:20,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:19:20,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 29, 31] total 77 [2024-12-02 07:19:20,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819954338] [2024-12-02 07:19:20,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:19:20,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-12-02 07:19:20,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:19:20,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-12-02 07:19:20,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=555, Invalid=5297, Unknown=0, NotChecked=0, Total=5852 [2024-12-02 07:19:20,411 INFO L87 Difference]: Start difference. First operand 7165 states and 7977 transitions. Second operand has 77 states, 77 states have (on average 5.428571428571429) internal successors, (418), 77 states have internal predecessors, (418), 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)