./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label11.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_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/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_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label11.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/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_00047c2c-578d-450a-9eb8-b045ed3f04c1/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 63f4b5f458089380e8f0669a95e988a7b7ab051335671065e81323bd858af55a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 12:42:03,037 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 12:42:03,094 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 12:42:03,100 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 12:42:03,100 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 12:42:03,121 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 12:42:03,122 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 12:42:03,122 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 12:42:03,122 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 12:42:03,122 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 12:42:03,122 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 12:42:03,122 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 12:42:03,123 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 12:42:03,123 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 12:42:03,123 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 12:42:03,123 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 12:42:03,123 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 12:42:03,123 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 12:42:03,123 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 12:42:03,123 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 12:42:03,123 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 12:42:03,124 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 12:42:03,124 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 12:42:03,124 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 12:42:03,124 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 12:42:03,124 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 12:42:03,124 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 12:42:03,124 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 12:42:03,124 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 12:42:03,124 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:42:03,124 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:42:03,124 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:42:03,125 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:42:03,125 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 12:42:03,125 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:42:03,125 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:42:03,125 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:42:03,125 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:42:03,125 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 12:42:03,125 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 12:42:03,125 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 12:42:03,125 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 12:42:03,125 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 12:42:03,125 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 12:42:03,126 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 12:42:03,126 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 12:42:03,126 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 12:42:03,126 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 12:42:03,126 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_00047c2c-578d-450a-9eb8-b045ed3f04c1/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 -> 63f4b5f458089380e8f0669a95e988a7b7ab051335671065e81323bd858af55a [2024-12-02 12:42:03,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 12:42:03,360 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 12:42:03,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 12:42:03,363 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 12:42:03,363 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 12:42:03,365 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/eca-rers2012/Problem13_label11.c [2024-12-02 12:42:06,081 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/data/08bd18f81/2c0f818a13e24c96a626ca7875680670/FLAG8de4a701d [2024-12-02 12:42:06,541 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 12:42:06,541 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/sv-benchmarks/c/eca-rers2012/Problem13_label11.c [2024-12-02 12:42:06,584 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/data/08bd18f81/2c0f818a13e24c96a626ca7875680670/FLAG8de4a701d [2024-12-02 12:42:06,598 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/data/08bd18f81/2c0f818a13e24c96a626ca7875680670 [2024-12-02 12:42:06,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 12:42:06,601 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 12:42:06,603 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 12:42:06,603 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 12:42:06,607 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 12:42:06,608 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:42:06" (1/1) ... [2024-12-02 12:42:06,609 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@612b0e7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:06, skipping insertion in model container [2024-12-02 12:42:06,609 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:42:06" (1/1) ... [2024-12-02 12:42:06,687 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 12:42:06,861 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_00047c2c-578d-450a-9eb8-b045ed3f04c1/sv-benchmarks/c/eca-rers2012/Problem13_label11.c[3906,3919] [2024-12-02 12:42:07,527 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:42:07,537 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 12:42:07,552 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_00047c2c-578d-450a-9eb8-b045ed3f04c1/sv-benchmarks/c/eca-rers2012/Problem13_label11.c[3906,3919] [2024-12-02 12:42:08,057 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:42:08,083 INFO L204 MainTranslator]: Completed translation [2024-12-02 12:42:08,083 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:08 WrapperNode [2024-12-02 12:42:08,083 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 12:42:08,084 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 12:42:08,085 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 12:42:08,085 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 12:42:08,091 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:08" (1/1) ... [2024-12-02 12:42:08,145 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:08" (1/1) ... [2024-12-02 12:42:08,595 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5586 [2024-12-02 12:42:08,596 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 12:42:08,596 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 12:42:08,596 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 12:42:08,596 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 12:42:08,603 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:08" (1/1) ... [2024-12-02 12:42:08,603 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:08" (1/1) ... [2024-12-02 12:42:08,646 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:08" (1/1) ... [2024-12-02 12:42:08,853 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 12:42:08,853 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:08" (1/1) ... [2024-12-02 12:42:08,854 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:08" (1/1) ... [2024-12-02 12:42:09,047 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:08" (1/1) ... [2024-12-02 12:42:09,065 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:08" (1/1) ... [2024-12-02 12:42:09,120 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:08" (1/1) ... [2024-12-02 12:42:09,145 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:08" (1/1) ... [2024-12-02 12:42:09,167 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:08" (1/1) ... [2024-12-02 12:42:09,226 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 12:42:09,228 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 12:42:09,229 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 12:42:09,229 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 12:42:09,230 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:08" (1/1) ... [2024-12-02 12:42:09,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:42:09,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:42:09,262 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 12:42:09,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 12:42:09,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 12:42:09,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 12:42:09,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 12:42:09,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 12:42:09,394 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 12:42:09,396 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 12:42:15,706 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-12-02 12:42:15,707 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 12:42:15,736 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 12:42:15,736 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 12:42:15,737 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:42:15 BoogieIcfgContainer [2024-12-02 12:42:15,737 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 12:42:15,739 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 12:42:15,739 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 12:42:15,744 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 12:42:15,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:42:06" (1/3) ... [2024-12-02 12:42:15,745 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aa7785e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:42:15, skipping insertion in model container [2024-12-02 12:42:15,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:08" (2/3) ... [2024-12-02 12:42:15,745 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aa7785e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:42:15, skipping insertion in model container [2024-12-02 12:42:15,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:42:15" (3/3) ... [2024-12-02 12:42:15,746 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem13_label11.c [2024-12-02 12:42:15,761 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 12:42:15,763 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem13_label11.c that has 1 procedures, 1098 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 12:42:15,836 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 12:42:15,848 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;@1e8b0e8d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 12:42:15,848 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 12:42:15,856 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 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 12:42:15,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-12-02 12:42:15,861 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:42:15,862 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] [2024-12-02 12:42:15,862 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:42:15,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:42:15,867 INFO L85 PathProgramCache]: Analyzing trace with hash 678582746, now seen corresponding path program 1 times [2024-12-02 12:42:15,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:42:15,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712141584] [2024-12-02 12:42:15,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:42:15,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:42:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:42:16,098 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 12:42:16,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:42:16,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712141584] [2024-12-02 12:42:16,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712141584] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:42:16,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:42:16,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:42:16,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180435244] [2024-12-02 12:42:16,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:42:16,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:42:16,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:42:16,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:42:16,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:42:16,127 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 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 12:42:20,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:42:20,717 INFO L93 Difference]: Finished difference Result 3160 states and 5843 transitions. [2024-12-02 12:42:20,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:42:20,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2024-12-02 12:42:20,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:42:20,737 INFO L225 Difference]: With dead ends: 3160 [2024-12-02 12:42:20,737 INFO L226 Difference]: Without dead ends: 1983 [2024-12-02 12:42:20,742 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:42:20,744 INFO L435 NwaCegarLoop]: 243 mSDtfsCounter, 1077 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 3030 mSolverCounterSat, 974 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 4004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 974 IncrementalHoareTripleChecker+Valid, 3030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-12-02 12:42:20,745 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1077 Valid, 340 Invalid, 4004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [974 Valid, 3030 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-12-02 12:42:20,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2024-12-02 12:42:20,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1930. [2024-12-02 12:42:20,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1930 states, 1929 states have (on average 1.7973043027475375) internal successors, (3467), 1929 states have internal predecessors, (3467), 0 states have call successors, (0), 0 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 12:42:20,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 3467 transitions. [2024-12-02 12:42:20,839 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 3467 transitions. Word has length 26 [2024-12-02 12:42:20,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:42:20,839 INFO L471 AbstractCegarLoop]: Abstraction has 1930 states and 3467 transitions. [2024-12-02 12:42:20,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 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 12:42:20,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 3467 transitions. [2024-12-02 12:42:20,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-12-02 12:42:20,842 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:42:20,842 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:42:20,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 12:42:20,843 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:42:20,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:42:20,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1189698078, now seen corresponding path program 1 times [2024-12-02 12:42:20,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:42:20,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712813329] [2024-12-02 12:42:20,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:42:20,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:42:20,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:42:21,059 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:42:21,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:42:21,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712813329] [2024-12-02 12:42:21,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712813329] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:42:21,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:42:21,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:42:21,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023047524] [2024-12-02 12:42:21,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:42:21,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:42:21,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:42:21,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:42:21,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:42:21,062 INFO L87 Difference]: Start difference. First operand 1930 states and 3467 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 12:42:24,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:42:24,706 INFO L93 Difference]: Finished difference Result 5456 states and 9917 transitions. [2024-12-02 12:42:24,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:42:24,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2024-12-02 12:42:24,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:42:24,715 INFO L225 Difference]: With dead ends: 5456 [2024-12-02 12:42:24,715 INFO L226 Difference]: Without dead ends: 3528 [2024-12-02 12:42:24,717 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:42:24,717 INFO L435 NwaCegarLoop]: 855 mSDtfsCounter, 923 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 3187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-12-02 12:42:24,718 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1007 Invalid, 3187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-12-02 12:42:24,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3528 states. [2024-12-02 12:42:24,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3528 to 3526. [2024-12-02 12:42:24,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3526 states, 3525 states have (on average 1.5670921985815602) internal successors, (5524), 3525 states have internal predecessors, (5524), 0 states have call successors, (0), 0 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 12:42:24,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3526 states to 3526 states and 5524 transitions. [2024-12-02 12:42:24,812 INFO L78 Accepts]: Start accepts. Automaton has 3526 states and 5524 transitions. Word has length 91 [2024-12-02 12:42:24,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:42:24,812 INFO L471 AbstractCegarLoop]: Abstraction has 3526 states and 5524 transitions. [2024-12-02 12:42:24,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 12:42:24,813 INFO L276 IsEmpty]: Start isEmpty. Operand 3526 states and 5524 transitions. [2024-12-02 12:42:24,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-12-02 12:42:24,814 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:42:24,814 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:42:24,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 12:42:24,815 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:42:24,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:42:24,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1002704179, now seen corresponding path program 1 times [2024-12-02 12:42:24,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:42:24,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86145787] [2024-12-02 12:42:24,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:42:24,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:42:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:42:24,959 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:42:24,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:42:24,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86145787] [2024-12-02 12:42:24,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86145787] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:42:24,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:42:24,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:42:24,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126468254] [2024-12-02 12:42:24,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:42:24,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:42:24,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:42:24,961 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:42:24,961 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:42:24,961 INFO L87 Difference]: Start difference. First operand 3526 states and 5524 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 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 12:42:28,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:42:28,444 INFO L93 Difference]: Finished difference Result 10232 states and 16097 transitions. [2024-12-02 12:42:28,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:42:28,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2024-12-02 12:42:28,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:42:28,460 INFO L225 Difference]: With dead ends: 10232 [2024-12-02 12:42:28,460 INFO L226 Difference]: Without dead ends: 6708 [2024-12-02 12:42:28,463 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:42:28,464 INFO L435 NwaCegarLoop]: 717 mSDtfsCounter, 972 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2534 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 3309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-12-02 12:42:28,464 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 850 Invalid, 3309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2534 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-12-02 12:42:28,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6708 states. [2024-12-02 12:42:28,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6708 to 6700. [2024-12-02 12:42:28,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6700 states, 6699 states have (on average 1.413046723391551) internal successors, (9466), 6699 states have internal predecessors, (9466), 0 states have call successors, (0), 0 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 12:42:28,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6700 states to 6700 states and 9466 transitions. [2024-12-02 12:42:28,575 INFO L78 Accepts]: Start accepts. Automaton has 6700 states and 9466 transitions. Word has length 97 [2024-12-02 12:42:28,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:42:28,575 INFO L471 AbstractCegarLoop]: Abstraction has 6700 states and 9466 transitions. [2024-12-02 12:42:28,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 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 12:42:28,576 INFO L276 IsEmpty]: Start isEmpty. Operand 6700 states and 9466 transitions. [2024-12-02 12:42:28,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-12-02 12:42:28,578 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:42:28,578 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:42:28,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 12:42:28,579 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:42:28,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:42:28,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1727159864, now seen corresponding path program 1 times [2024-12-02 12:42:28,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:42:28,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057188856] [2024-12-02 12:42:28,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:42:28,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:42:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:42:28,754 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:42:28,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:42:28,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057188856] [2024-12-02 12:42:28,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057188856] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:42:28,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:42:28,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:42:28,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474405984] [2024-12-02 12:42:28,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:42:28,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:42:28,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:42:28,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:42:28,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:42:28,756 INFO L87 Difference]: Start difference. First operand 6700 states and 9466 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:42:32,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:42:32,713 INFO L93 Difference]: Finished difference Result 17443 states and 24479 transitions. [2024-12-02 12:42:32,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:42:32,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2024-12-02 12:42:32,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:42:32,734 INFO L225 Difference]: With dead ends: 17443 [2024-12-02 12:42:32,734 INFO L226 Difference]: Without dead ends: 10745 [2024-12-02 12:42:32,740 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:42:32,741 INFO L435 NwaCegarLoop]: 834 mSDtfsCounter, 844 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 3291 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 3741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 3291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-12-02 12:42:32,742 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 965 Invalid, 3741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 3291 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-12-02 12:42:32,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10745 states. [2024-12-02 12:42:32,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10745 to 10669. [2024-12-02 12:42:32,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10669 states, 10668 states have (on average 1.3562992125984252) internal successors, (14469), 10668 states have internal predecessors, (14469), 0 states have call successors, (0), 0 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 12:42:32,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10669 states to 10669 states and 14469 transitions. [2024-12-02 12:42:32,958 INFO L78 Accepts]: Start accepts. Automaton has 10669 states and 14469 transitions. Word has length 127 [2024-12-02 12:42:32,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:42:32,959 INFO L471 AbstractCegarLoop]: Abstraction has 10669 states and 14469 transitions. [2024-12-02 12:42:32,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:42:32,960 INFO L276 IsEmpty]: Start isEmpty. Operand 10669 states and 14469 transitions. [2024-12-02 12:42:32,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-12-02 12:42:32,964 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:42:32,964 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:42:32,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 12:42:32,965 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:42:32,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:42:32,966 INFO L85 PathProgramCache]: Analyzing trace with hash -775349553, now seen corresponding path program 1 times [2024-12-02 12:42:32,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:42:32,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108094269] [2024-12-02 12:42:32,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:42:32,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:42:33,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:42:33,456 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:42:33,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:42:33,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108094269] [2024-12-02 12:42:33,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108094269] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:42:33,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:42:33,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:42:33,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066673504] [2024-12-02 12:42:33,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:42:33,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:42:33,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:42:33,458 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:42:33,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:42:33,458 INFO L87 Difference]: Start difference. First operand 10669 states and 14469 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 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 12:42:36,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:42:36,532 INFO L93 Difference]: Finished difference Result 20549 states and 28119 transitions. [2024-12-02 12:42:36,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:42:36,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 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 137 [2024-12-02 12:42:36,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:42:36,548 INFO L225 Difference]: With dead ends: 20549 [2024-12-02 12:42:36,548 INFO L226 Difference]: Without dead ends: 10669 [2024-12-02 12:42:36,553 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:42:36,554 INFO L435 NwaCegarLoop]: 1083 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2520 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 2544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:42:36,554 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1212 Invalid, 2544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2520 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-12-02 12:42:36,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10669 states. [2024-12-02 12:42:36,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10669 to 10669. [2024-12-02 12:42:36,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10669 states, 10668 states have (on average 1.3539557555305586) internal successors, (14444), 10668 states have internal predecessors, (14444), 0 states have call successors, (0), 0 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 12:42:36,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10669 states to 10669 states and 14444 transitions. [2024-12-02 12:42:36,669 INFO L78 Accepts]: Start accepts. Automaton has 10669 states and 14444 transitions. Word has length 137 [2024-12-02 12:42:36,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:42:36,669 INFO L471 AbstractCegarLoop]: Abstraction has 10669 states and 14444 transitions. [2024-12-02 12:42:36,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 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 12:42:36,670 INFO L276 IsEmpty]: Start isEmpty. Operand 10669 states and 14444 transitions. [2024-12-02 12:42:36,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-12-02 12:42:36,672 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:42:36,672 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:42:36,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 12:42:36,672 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:42:36,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:42:36,673 INFO L85 PathProgramCache]: Analyzing trace with hash -2076503771, now seen corresponding path program 1 times [2024-12-02 12:42:36,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:42:36,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62140185] [2024-12-02 12:42:36,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:42:36,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:42:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:42:36,785 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-12-02 12:42:36,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:42:36,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62140185] [2024-12-02 12:42:36,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62140185] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:42:36,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:42:36,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:42:36,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049013012] [2024-12-02 12:42:36,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:42:36,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:42:36,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:42:36,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:42:36,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:42:36,788 INFO L87 Difference]: Start difference. First operand 10669 states and 14444 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 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 12:42:40,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:42:40,172 INFO L93 Difference]: Finished difference Result 30031 states and 41217 transitions. [2024-12-02 12:42:40,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:42:40,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 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 12:42:40,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:42:40,198 INFO L225 Difference]: With dead ends: 30031 [2024-12-02 12:42:40,198 INFO L226 Difference]: Without dead ends: 20151 [2024-12-02 12:42:40,206 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:42:40,207 INFO L435 NwaCegarLoop]: 1071 mSDtfsCounter, 736 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 2527 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 3306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 2527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-12-02 12:42:40,207 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 1221 Invalid, 3306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [779 Valid, 2527 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-12-02 12:42:40,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20151 states. [2024-12-02 12:42:40,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20151 to 19337. [2024-12-02 12:42:40,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19337 states, 19336 states have (on average 1.24244931733554) internal successors, (24024), 19336 states have internal predecessors, (24024), 0 states have call successors, (0), 0 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 12:42:40,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19337 states to 19337 states and 24024 transitions. [2024-12-02 12:42:40,368 INFO L78 Accepts]: Start accepts. Automaton has 19337 states and 24024 transitions. Word has length 151 [2024-12-02 12:42:40,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:42:40,369 INFO L471 AbstractCegarLoop]: Abstraction has 19337 states and 24024 transitions. [2024-12-02 12:42:40,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 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 12:42:40,369 INFO L276 IsEmpty]: Start isEmpty. Operand 19337 states and 24024 transitions. [2024-12-02 12:42:40,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-12-02 12:42:40,371 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:42:40,371 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 12:42:40,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 12:42:40,371 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:42:40,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:42:40,371 INFO L85 PathProgramCache]: Analyzing trace with hash -581878337, now seen corresponding path program 1 times [2024-12-02 12:42:40,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:42:40,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86033318] [2024-12-02 12:42:40,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:42:40,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:42:40,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:42:40,800 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-12-02 12:42:40,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:42:40,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86033318] [2024-12-02 12:42:40,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86033318] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:42:40,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:42:40,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:42:40,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425434444] [2024-12-02 12:42:40,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:42:40,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:42:40,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:42:40,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:42:40,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:42:40,802 INFO L87 Difference]: Start difference. First operand 19337 states and 24024 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 0 states have call successors, (0), 0 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 12:42:44,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:42:44,398 INFO L93 Difference]: Finished difference Result 44989 states and 55628 transitions. [2024-12-02 12:42:44,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:42:44,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 0 states have call successors, (0), 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 238 [2024-12-02 12:42:44,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:42:44,419 INFO L225 Difference]: With dead ends: 44989 [2024-12-02 12:42:44,419 INFO L226 Difference]: Without dead ends: 26441 [2024-12-02 12:42:44,428 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:42:44,428 INFO L435 NwaCegarLoop]: 1029 mSDtfsCounter, 728 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 2895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-12-02 12:42:44,428 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1213 Invalid, 2895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-12-02 12:42:44,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26441 states. [2024-12-02 12:42:44,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26441 to 26434. [2024-12-02 12:42:44,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26434 states, 26433 states have (on average 1.200582605076987) internal successors, (31735), 26433 states have internal predecessors, (31735), 0 states have call successors, (0), 0 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 12:42:44,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26434 states to 26434 states and 31735 transitions. [2024-12-02 12:42:44,641 INFO L78 Accepts]: Start accepts. Automaton has 26434 states and 31735 transitions. Word has length 238 [2024-12-02 12:42:44,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:42:44,642 INFO L471 AbstractCegarLoop]: Abstraction has 26434 states and 31735 transitions. [2024-12-02 12:42:44,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 0 states have call successors, (0), 0 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 12:42:44,642 INFO L276 IsEmpty]: Start isEmpty. Operand 26434 states and 31735 transitions. [2024-12-02 12:42:44,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-12-02 12:42:44,646 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:42:44,646 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:42:44,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 12:42:44,646 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:42:44,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:42:44,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1834844219, now seen corresponding path program 1 times [2024-12-02 12:42:44,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:42:44,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095429856] [2024-12-02 12:42:44,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:42:44,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:42:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:42:44,760 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:42:44,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:42:44,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095429856] [2024-12-02 12:42:44,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095429856] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:42:44,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:42:44,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:42:44,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082057285] [2024-12-02 12:42:44,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:42:44,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:42:44,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:42:44,762 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:42:44,762 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:42:44,762 INFO L87 Difference]: Start difference. First operand 26434 states and 31735 transitions. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 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 12:42:48,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:42:48,718 INFO L93 Difference]: Finished difference Result 72535 states and 87971 transitions. [2024-12-02 12:42:48,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:42:48,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 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 240 [2024-12-02 12:42:48,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:42:48,775 INFO L225 Difference]: With dead ends: 72535 [2024-12-02 12:42:48,775 INFO L226 Difference]: Without dead ends: 46103 [2024-12-02 12:42:48,790 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 12:42:48,790 INFO L435 NwaCegarLoop]: 1848 mSDtfsCounter, 841 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1984 SdHoareTripleChecker+Invalid, 3285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-12-02 12:42:48,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 1984 Invalid, 3285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [806 Valid, 2479 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-12-02 12:42:48,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46103 states. [2024-12-02 12:42:49,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46103 to 43733. [2024-12-02 12:42:49,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43733 states, 43732 states have (on average 1.1691210097868838) internal successors, (51128), 43732 states have internal predecessors, (51128), 0 states have call successors, (0), 0 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 12:42:49,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43733 states to 43733 states and 51128 transitions. [2024-12-02 12:42:49,210 INFO L78 Accepts]: Start accepts. Automaton has 43733 states and 51128 transitions. Word has length 240 [2024-12-02 12:42:49,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:42:49,211 INFO L471 AbstractCegarLoop]: Abstraction has 43733 states and 51128 transitions. [2024-12-02 12:42:49,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 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 12:42:49,211 INFO L276 IsEmpty]: Start isEmpty. Operand 43733 states and 51128 transitions. [2024-12-02 12:42:49,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-12-02 12:42:49,215 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:42:49,215 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 12:42:49,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 12:42:49,216 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:42:49,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:42:49,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1777805807, now seen corresponding path program 1 times [2024-12-02 12:42:49,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:42:49,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798034818] [2024-12-02 12:42:49,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:42:49,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:42:49,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:42:49,502 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:42:49,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:42:49,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798034818] [2024-12-02 12:42:49,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798034818] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:42:49,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:42:49,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:42:49,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847484208] [2024-12-02 12:42:49,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:42:49,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:42:49,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:42:49,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:42:49,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:42:49,504 INFO L87 Difference]: Start difference. First operand 43733 states and 51128 transitions. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 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 12:42:53,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:42:53,148 INFO L93 Difference]: Finished difference Result 106364 states and 126458 transitions. [2024-12-02 12:42:53,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:42:53,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 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 253 [2024-12-02 12:42:53,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:42:53,202 INFO L225 Difference]: With dead ends: 106364 [2024-12-02 12:42:53,202 INFO L226 Difference]: Without dead ends: 63420 [2024-12-02 12:42:53,221 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 12:42:53,222 INFO L435 NwaCegarLoop]: 812 mSDtfsCounter, 823 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2385 mSolverCounterSat, 900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 3285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 900 IncrementalHoareTripleChecker+Valid, 2385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-12-02 12:42:53,222 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 930 Invalid, 3285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [900 Valid, 2385 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-12-02 12:42:53,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63420 states. [2024-12-02 12:42:53,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63420 to 61048. [2024-12-02 12:42:53,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61048 states, 61047 states have (on average 1.1609579504316347) internal successors, (70873), 61047 states have internal predecessors, (70873), 0 states have call successors, (0), 0 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 12:42:53,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61048 states to 61048 states and 70873 transitions. [2024-12-02 12:42:54,000 INFO L78 Accepts]: Start accepts. Automaton has 61048 states and 70873 transitions. Word has length 253 [2024-12-02 12:42:54,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:42:54,000 INFO L471 AbstractCegarLoop]: Abstraction has 61048 states and 70873 transitions. [2024-12-02 12:42:54,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 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 12:42:54,001 INFO L276 IsEmpty]: Start isEmpty. Operand 61048 states and 70873 transitions. [2024-12-02 12:42:54,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2024-12-02 12:42:54,004 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:42:54,004 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:42:54,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 12:42:54,004 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:42:54,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:42:54,005 INFO L85 PathProgramCache]: Analyzing trace with hash 796596, now seen corresponding path program 1 times [2024-12-02 12:42:54,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:42:54,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001953267] [2024-12-02 12:42:54,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:42:54,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:42:54,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:42:54,303 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 323 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-12-02 12:42:54,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:42:54,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001953267] [2024-12-02 12:42:54,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001953267] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:42:54,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:42:54,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:42:54,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777107141] [2024-12-02 12:42:54,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:42:54,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:42:54,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:42:54,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:42:54,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:42:54,305 INFO L87 Difference]: Start difference. First operand 61048 states and 70873 transitions. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 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 12:43:01,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:43:01,410 INFO L93 Difference]: Finished difference Result 160082 states and 186750 transitions. [2024-12-02 12:43:01,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:43:01,411 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 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 314 [2024-12-02 12:43:01,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:43:01,517 INFO L225 Difference]: With dead ends: 160082 [2024-12-02 12:43:01,517 INFO L226 Difference]: Without dead ends: 99823 [2024-12-02 12:43:01,553 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:43:01,553 INFO L435 NwaCegarLoop]: 860 mSDtfsCounter, 1700 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 6252 mSolverCounterSat, 995 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1700 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 7247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 995 IncrementalHoareTripleChecker+Valid, 6252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-12-02 12:43:01,553 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1700 Valid, 1057 Invalid, 7247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [995 Valid, 6252 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2024-12-02 12:43:01,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99823 states. [2024-12-02 12:43:02,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99823 to 76803. [2024-12-02 12:43:02,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76803 states, 76802 states have (on average 1.1463763964480091) internal successors, (88044), 76802 states have internal predecessors, (88044), 0 states have call successors, (0), 0 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 12:43:02,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76803 states to 76803 states and 88044 transitions. [2024-12-02 12:43:02,341 INFO L78 Accepts]: Start accepts. Automaton has 76803 states and 88044 transitions. Word has length 314 [2024-12-02 12:43:02,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:43:02,341 INFO L471 AbstractCegarLoop]: Abstraction has 76803 states and 88044 transitions. [2024-12-02 12:43:02,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 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 12:43:02,341 INFO L276 IsEmpty]: Start isEmpty. Operand 76803 states and 88044 transitions. [2024-12-02 12:43:02,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-12-02 12:43:02,343 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:43:02,343 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:43:02,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 12:43:02,344 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:43:02,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:02,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1476485299, now seen corresponding path program 1 times [2024-12-02 12:43:02,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:02,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281405272] [2024-12-02 12:43:02,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:02,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:03,379 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 176 proven. 113 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-12-02 12:43:03,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:03,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281405272] [2024-12-02 12:43:03,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281405272] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:43:03,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796789901] [2024-12-02 12:43:03,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:03,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:43:03,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:43:03,382 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:43:03,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 12:43:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:03,511 INFO L256 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 12:43:03,517 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:43:03,616 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-12-02 12:43:03,616 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:43:03,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796789901] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:43:03,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:43:03,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-12-02 12:43:03,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301572467] [2024-12-02 12:43:03,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:43:03,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:43:03,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:03,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:43:03,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:43:03,618 INFO L87 Difference]: Start difference. First operand 76803 states and 88044 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 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 12:43:07,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:43:07,626 INFO L93 Difference]: Finished difference Result 152806 states and 175284 transitions. [2024-12-02 12:43:07,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:43:07,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 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 332 [2024-12-02 12:43:07,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:43:07,689 INFO L225 Difference]: With dead ends: 152806 [2024-12-02 12:43:07,689 INFO L226 Difference]: Without dead ends: 76792 [2024-12-02 12:43:07,717 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:43:07,718 INFO L435 NwaCegarLoop]: 681 mSDtfsCounter, 1073 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2388 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 2920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 2388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-12-02 12:43:07,718 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 814 Invalid, 2920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 2388 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-12-02 12:43:07,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76792 states. [2024-12-02 12:43:08,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76792 to 76789. [2024-12-02 12:43:08,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76789 states, 76788 states have (on average 1.1087149033703183) internal successors, (85136), 76788 states have internal predecessors, (85136), 0 states have call successors, (0), 0 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 12:43:08,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76789 states to 76789 states and 85136 transitions. [2024-12-02 12:43:08,386 INFO L78 Accepts]: Start accepts. Automaton has 76789 states and 85136 transitions. Word has length 332 [2024-12-02 12:43:08,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:43:08,386 INFO L471 AbstractCegarLoop]: Abstraction has 76789 states and 85136 transitions. [2024-12-02 12:43:08,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 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 12:43:08,386 INFO L276 IsEmpty]: Start isEmpty. Operand 76789 states and 85136 transitions. [2024-12-02 12:43:08,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2024-12-02 12:43:08,389 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:43:08,390 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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 12:43:08,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 12:43:08,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-12-02 12:43:08,590 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:43:08,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:08,591 INFO L85 PathProgramCache]: Analyzing trace with hash -904685255, now seen corresponding path program 1 times [2024-12-02 12:43:08,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:08,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883057271] [2024-12-02 12:43:08,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:08,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:08,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:09,487 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 273 proven. 110 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-12-02 12:43:09,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:09,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883057271] [2024-12-02 12:43:09,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883057271] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:43:09,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794591028] [2024-12-02 12:43:09,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:09,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:43:09,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:43:09,490 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:43:09,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 12:43:09,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:09,714 INFO L256 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 12:43:09,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:43:09,915 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 270 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-12-02 12:43:09,915 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:43:09,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794591028] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:43:09,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:43:09,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-12-02 12:43:09,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536657403] [2024-12-02 12:43:09,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:43:09,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:43:09,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:09,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:43:09,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:43:09,918 INFO L87 Difference]: Start difference. First operand 76789 states and 85136 transitions. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 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 12:43:13,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:43:13,391 INFO L93 Difference]: Finished difference Result 152787 states and 169477 transitions. [2024-12-02 12:43:13,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:43:13,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 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 381 [2024-12-02 12:43:13,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:43:13,467 INFO L225 Difference]: With dead ends: 152787 [2024-12-02 12:43:13,467 INFO L226 Difference]: Without dead ends: 76787 [2024-12-02 12:43:13,503 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:43:13,503 INFO L435 NwaCegarLoop]: 1343 mSDtfsCounter, 1084 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2462 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 2906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 2462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:43:13,504 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1084 Valid, 1422 Invalid, 2906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 2462 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-12-02 12:43:13,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76787 states. [2024-12-02 12:43:14,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76787 to 76786. [2024-12-02 12:43:14,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76786 states, 76785 states have (on average 1.0866184801719085) internal successors, (83436), 76785 states have internal predecessors, (83436), 0 states have call successors, (0), 0 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 12:43:14,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76786 states to 76786 states and 83436 transitions. [2024-12-02 12:43:14,169 INFO L78 Accepts]: Start accepts. Automaton has 76786 states and 83436 transitions. Word has length 381 [2024-12-02 12:43:14,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:43:14,169 INFO L471 AbstractCegarLoop]: Abstraction has 76786 states and 83436 transitions. [2024-12-02 12:43:14,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 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 12:43:14,169 INFO L276 IsEmpty]: Start isEmpty. Operand 76786 states and 83436 transitions. [2024-12-02 12:43:14,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2024-12-02 12:43:14,172 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:43:14,172 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:43:14,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 12:43:14,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-12-02 12:43:14,373 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:43:14,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:14,374 INFO L85 PathProgramCache]: Analyzing trace with hash 191330175, now seen corresponding path program 1 times [2024-12-02 12:43:14,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:14,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134495851] [2024-12-02 12:43:14,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:14,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:14,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:14,518 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-12-02 12:43:14,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:14,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134495851] [2024-12-02 12:43:14,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134495851] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:43:14,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:43:14,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:43:14,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016710499] [2024-12-02 12:43:14,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:43:14,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:43:14,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:14,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:43:14,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:43:14,519 INFO L87 Difference]: Start difference. First operand 76786 states and 83436 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 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 12:43:18,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:43:18,308 INFO L93 Difference]: Finished difference Result 177191 states and 193904 transitions. [2024-12-02 12:43:18,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:43:18,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 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) Word has length 382 [2024-12-02 12:43:18,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:43:18,395 INFO L225 Difference]: With dead ends: 177191 [2024-12-02 12:43:18,395 INFO L226 Difference]: Without dead ends: 101194 [2024-12-02 12:43:18,431 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 12:43:18,431 INFO L435 NwaCegarLoop]: 812 mSDtfsCounter, 888 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2418 mSolverCounterSat, 932 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 3350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 932 IncrementalHoareTripleChecker+Valid, 2418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-12-02 12:43:18,431 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 895 Invalid, 3350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [932 Valid, 2418 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-12-02 12:43:18,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101194 states. [2024-12-02 12:43:19,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101194 to 99602. [2024-12-02 12:43:19,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99602 states, 99601 states have (on average 1.0899087358560657) internal successors, (108556), 99601 states have internal predecessors, (108556), 0 states have call successors, (0), 0 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 12:43:19,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99602 states to 99602 states and 108556 transitions. [2024-12-02 12:43:19,473 INFO L78 Accepts]: Start accepts. Automaton has 99602 states and 108556 transitions. Word has length 382 [2024-12-02 12:43:19,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:43:19,474 INFO L471 AbstractCegarLoop]: Abstraction has 99602 states and 108556 transitions. [2024-12-02 12:43:19,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 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 12:43:19,474 INFO L276 IsEmpty]: Start isEmpty. Operand 99602 states and 108556 transitions. [2024-12-02 12:43:19,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2024-12-02 12:43:19,479 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:43:19,479 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:43:19,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 12:43:19,480 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:43:19,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:19,481 INFO L85 PathProgramCache]: Analyzing trace with hash 348171354, now seen corresponding path program 1 times [2024-12-02 12:43:19,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:19,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257564804] [2024-12-02 12:43:19,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:19,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:19,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:20,453 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 288 proven. 110 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-12-02 12:43:20,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:20,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257564804] [2024-12-02 12:43:20,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257564804] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:43:20,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140441624] [2024-12-02 12:43:20,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:20,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:43:20,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:43:20,455 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:43:20,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 12:43:20,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:20,626 INFO L256 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 12:43:20,631 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:43:20,832 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-12-02 12:43:20,832 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:43:20,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140441624] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:43:20,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:43:20,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-12-02 12:43:20,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886912768] [2024-12-02 12:43:20,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:43:20,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:43:20,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:20,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:43:20,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:43:20,834 INFO L87 Difference]: Start difference. First operand 99602 states and 108556 transitions. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 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 12:43:24,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:43:24,337 INFO L93 Difference]: Finished difference Result 195242 states and 214131 transitions. [2024-12-02 12:43:24,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:43:24,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 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 456 [2024-12-02 12:43:24,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:43:24,443 INFO L225 Difference]: With dead ends: 195242 [2024-12-02 12:43:24,443 INFO L226 Difference]: Without dead ends: 111390 [2024-12-02 12:43:24,482 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:43:24,483 INFO L435 NwaCegarLoop]: 382 mSDtfsCounter, 1133 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 846 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1133 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 3107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 846 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:43:24,483 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1133 Valid, 396 Invalid, 3107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [846 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-12-02 12:43:24,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111390 states. [2024-12-02 12:43:25,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111390 to 111390. [2024-12-02 12:43:25,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111390 states, 111389 states have (on average 1.0825575236333929) internal successors, (120585), 111389 states have internal predecessors, (120585), 0 states have call successors, (0), 0 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 12:43:25,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111390 states to 111390 states and 120585 transitions. [2024-12-02 12:43:25,454 INFO L78 Accepts]: Start accepts. Automaton has 111390 states and 120585 transitions. Word has length 456 [2024-12-02 12:43:25,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:43:25,455 INFO L471 AbstractCegarLoop]: Abstraction has 111390 states and 120585 transitions. [2024-12-02 12:43:25,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 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 12:43:25,455 INFO L276 IsEmpty]: Start isEmpty. Operand 111390 states and 120585 transitions. [2024-12-02 12:43:25,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2024-12-02 12:43:25,461 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:43:25,461 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:43:25,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 12:43:25,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-12-02 12:43:25,662 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:43:25,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:25,662 INFO L85 PathProgramCache]: Analyzing trace with hash 443995640, now seen corresponding path program 1 times [2024-12-02 12:43:25,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:25,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903264623] [2024-12-02 12:43:25,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:25,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:25,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:25,978 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 408 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-12-02 12:43:25,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:25,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903264623] [2024-12-02 12:43:25,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903264623] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:43:25,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:43:25,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:43:25,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097178670] [2024-12-02 12:43:25,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:43:25,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:43:25,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:25,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:43:25,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:43:25,980 INFO L87 Difference]: Start difference. First operand 111390 states and 120585 transitions. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 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 12:43:29,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:43:29,885 INFO L93 Difference]: Finished difference Result 245599 states and 266947 transitions. [2024-12-02 12:43:29,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:43:29,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 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 474 [2024-12-02 12:43:29,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:43:30,012 INFO L225 Difference]: With dead ends: 245599 [2024-12-02 12:43:30,012 INFO L226 Difference]: Without dead ends: 134211 [2024-12-02 12:43:30,057 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 12:43:30,058 INFO L435 NwaCegarLoop]: 1709 mSDtfsCounter, 728 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 2493 mSolverCounterSat, 672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 3165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 672 IncrementalHoareTripleChecker+Valid, 2493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-12-02 12:43:30,058 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1844 Invalid, 3165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [672 Valid, 2493 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-12-02 12:43:30,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134211 states. [2024-12-02 12:43:31,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134211 to 134198. [2024-12-02 12:43:31,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134198 states, 134197 states have (on average 1.0705529929879207) internal successors, (143665), 134197 states have internal predecessors, (143665), 0 states have call successors, (0), 0 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 12:43:31,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134198 states to 134198 states and 143665 transitions. [2024-12-02 12:43:31,535 INFO L78 Accepts]: Start accepts. Automaton has 134198 states and 143665 transitions. Word has length 474 [2024-12-02 12:43:31,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:43:31,535 INFO L471 AbstractCegarLoop]: Abstraction has 134198 states and 143665 transitions. [2024-12-02 12:43:31,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 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 12:43:31,536 INFO L276 IsEmpty]: Start isEmpty. Operand 134198 states and 143665 transitions. [2024-12-02 12:43:31,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2024-12-02 12:43:31,543 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:43:31,543 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:43:31,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 12:43:31,543 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:43:31,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:31,544 INFO L85 PathProgramCache]: Analyzing trace with hash 649832757, now seen corresponding path program 1 times [2024-12-02 12:43:31,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:31,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810185813] [2024-12-02 12:43:31,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:31,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:31,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:31,765 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2024-12-02 12:43:31,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:31,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810185813] [2024-12-02 12:43:31,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810185813] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:43:31,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:43:31,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:43:31,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214073553] [2024-12-02 12:43:31,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:43:31,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:43:31,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:31,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:43:31,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:43:31,767 INFO L87 Difference]: Start difference. First operand 134198 states and 143665 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 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 12:43:34,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:43:34,050 INFO L93 Difference]: Finished difference Result 248696 states and 266866 transitions. [2024-12-02 12:43:34,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:43:34,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 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 511 [2024-12-02 12:43:34,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:43:34,159 INFO L225 Difference]: With dead ends: 248696 [2024-12-02 12:43:34,159 INFO L226 Difference]: Without dead ends: 133395 [2024-12-02 12:43:34,207 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:43:34,207 INFO L435 NwaCegarLoop]: 280 mSDtfsCounter, 1614 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1614 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 12:43:34,207 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1614 Valid, 280 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 12:43:34,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133395 states. [2024-12-02 12:43:35,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133395 to 133394. [2024-12-02 12:43:35,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133394 states, 133393 states have (on average 1.0695688679316007) internal successors, (142673), 133393 states have internal predecessors, (142673), 0 states have call successors, (0), 0 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 12:43:35,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133394 states to 133394 states and 142673 transitions. [2024-12-02 12:43:35,556 INFO L78 Accepts]: Start accepts. Automaton has 133394 states and 142673 transitions. Word has length 511 [2024-12-02 12:43:35,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:43:35,557 INFO L471 AbstractCegarLoop]: Abstraction has 133394 states and 142673 transitions. [2024-12-02 12:43:35,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 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 12:43:35,557 INFO L276 IsEmpty]: Start isEmpty. Operand 133394 states and 142673 transitions. [2024-12-02 12:43:35,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2024-12-02 12:43:35,570 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:43:35,570 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:43:35,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 12:43:35,571 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:43:35,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:35,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1942642485, now seen corresponding path program 1 times [2024-12-02 12:43:35,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:35,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125244373] [2024-12-02 12:43:35,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:35,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:35,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:36,309 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 408 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-12-02 12:43:36,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:36,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125244373] [2024-12-02 12:43:36,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125244373] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:43:36,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:43:36,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:43:36,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348343451] [2024-12-02 12:43:36,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:43:36,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:43:36,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:36,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:43:36,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:43:36,311 INFO L87 Difference]: Start difference. First operand 133394 states and 142673 transitions. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 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 12:43:40,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:43:40,085 INFO L93 Difference]: Finished difference Result 248682 states and 266691 transitions. [2024-12-02 12:43:40,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:43:40,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 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 525 [2024-12-02 12:43:40,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:43:40,187 INFO L225 Difference]: With dead ends: 248682 [2024-12-02 12:43:40,188 INFO L226 Difference]: Without dead ends: 134185 [2024-12-02 12:43:40,229 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 12:43:40,229 INFO L435 NwaCegarLoop]: 1767 mSDtfsCounter, 609 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2484 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 2498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-12-02 12:43:40,230 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 1892 Invalid, 2498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2484 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-12-02 12:43:40,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134185 states. [2024-12-02 12:43:41,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134185 to 134181. [2024-12-02 12:43:41,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134181 states, 134180 states have (on average 1.069384409002832) internal successors, (143490), 134180 states have internal predecessors, (143490), 0 states have call successors, (0), 0 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 12:43:41,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134181 states to 134181 states and 143490 transitions. [2024-12-02 12:43:41,356 INFO L78 Accepts]: Start accepts. Automaton has 134181 states and 143490 transitions. Word has length 525 [2024-12-02 12:43:41,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:43:41,357 INFO L471 AbstractCegarLoop]: Abstraction has 134181 states and 143490 transitions. [2024-12-02 12:43:41,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 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 12:43:41,357 INFO L276 IsEmpty]: Start isEmpty. Operand 134181 states and 143490 transitions. [2024-12-02 12:43:41,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2024-12-02 12:43:41,373 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:43:41,373 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:43:41,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 12:43:41,373 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:43:41,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:41,373 INFO L85 PathProgramCache]: Analyzing trace with hash 69110433, now seen corresponding path program 1 times [2024-12-02 12:43:41,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:41,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496260826] [2024-12-02 12:43:41,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:41,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:42,475 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 526 proven. 110 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2024-12-02 12:43:42,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:42,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496260826] [2024-12-02 12:43:42,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496260826] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:43:42,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999902269] [2024-12-02 12:43:42,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:42,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:43:42,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:43:42,477 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:43:42,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 12:43:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:42,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:43:42,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:43:42,750 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 523 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2024-12-02 12:43:42,750 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:43:42,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999902269] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:43:42,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:43:42,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-12-02 12:43:42,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792366158] [2024-12-02 12:43:42,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:43:42,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:43:42,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:42,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:43:42,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:43:42,752 INFO L87 Difference]: Start difference. First operand 134181 states and 143490 transitions. Second operand has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 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 12:43:47,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:43:47,725 INFO L93 Difference]: Finished difference Result 298254 states and 320099 transitions. [2024-12-02 12:43:47,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:43:47,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 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 585 [2024-12-02 12:43:47,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:43:48,040 INFO L225 Difference]: With dead ends: 298254 [2024-12-02 12:43:48,040 INFO L226 Difference]: Without dead ends: 180607 [2024-12-02 12:43:48,082 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 584 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:43:48,082 INFO L435 NwaCegarLoop]: 1602 mSDtfsCounter, 906 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 2528 mSolverCounterSat, 715 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 3243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 715 IncrementalHoareTripleChecker+Valid, 2528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:43:48,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [906 Valid, 1709 Invalid, 3243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [715 Valid, 2528 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-12-02 12:43:48,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180607 states. [2024-12-02 12:43:49,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180607 to 164862. [2024-12-02 12:43:49,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164862 states, 164861 states have (on average 1.061172745525018) internal successors, (174946), 164861 states have internal predecessors, (174946), 0 states have call successors, (0), 0 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 12:43:49,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164862 states to 164862 states and 174946 transitions. [2024-12-02 12:43:49,689 INFO L78 Accepts]: Start accepts. Automaton has 164862 states and 174946 transitions. Word has length 585 [2024-12-02 12:43:49,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:43:49,690 INFO L471 AbstractCegarLoop]: Abstraction has 164862 states and 174946 transitions. [2024-12-02 12:43:49,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 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 12:43:49,690 INFO L276 IsEmpty]: Start isEmpty. Operand 164862 states and 174946 transitions. [2024-12-02 12:43:49,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2024-12-02 12:43:49,702 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:43:49,702 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:43:49,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 12:43:49,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 12:43:49,903 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:43:49,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:49,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1211656569, now seen corresponding path program 1 times [2024-12-02 12:43:49,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:49,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733041104] [2024-12-02 12:43:49,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:49,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:51,089 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 359 proven. 110 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-12-02 12:43:51,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:51,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733041104] [2024-12-02 12:43:51,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733041104] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:43:51,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48759734] [2024-12-02 12:43:51,089 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:51,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:43:51,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:43:51,091 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:43:51,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 12:43:51,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:51,321 INFO L256 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 12:43:51,329 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:43:51,556 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 345 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-12-02 12:43:51,556 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:43:51,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48759734] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:43:51,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:43:51,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-12-02 12:43:51,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544556884] [2024-12-02 12:43:51,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:43:51,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:43:51,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:51,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:43:51,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:43:51,559 INFO L87 Difference]: Start difference. First operand 164862 states and 174946 transitions. Second operand has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 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 12:43:55,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:43:55,865 INFO L93 Difference]: Finished difference Result 328149 states and 348282 transitions. [2024-12-02 12:43:55,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:43:55,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 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 587 [2024-12-02 12:43:55,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:43:56,039 INFO L225 Difference]: With dead ends: 328149 [2024-12-02 12:43:56,039 INFO L226 Difference]: Without dead ends: 164076 [2024-12-02 12:43:56,118 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 586 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:43:56,119 INFO L435 NwaCegarLoop]: 1656 mSDtfsCounter, 692 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2433 mSolverCounterSat, 601 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 3034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 601 IncrementalHoareTripleChecker+Valid, 2433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-12-02 12:43:56,119 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 1781 Invalid, 3034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [601 Valid, 2433 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-12-02 12:43:56,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164076 states. [2024-12-02 12:43:57,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164076 to 160134. [2024-12-02 12:43:57,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160134 states, 160133 states have (on average 1.047660382307207) internal successors, (167765), 160133 states have internal predecessors, (167765), 0 states have call successors, (0), 0 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 12:43:57,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160134 states to 160134 states and 167765 transitions. [2024-12-02 12:43:57,754 INFO L78 Accepts]: Start accepts. Automaton has 160134 states and 167765 transitions. Word has length 587 [2024-12-02 12:43:57,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:43:57,754 INFO L471 AbstractCegarLoop]: Abstraction has 160134 states and 167765 transitions. [2024-12-02 12:43:57,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 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 12:43:57,754 INFO L276 IsEmpty]: Start isEmpty. Operand 160134 states and 167765 transitions. [2024-12-02 12:43:57,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2024-12-02 12:43:57,765 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:43:57,765 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 12:43:57,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 12:43:57,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:43:57,966 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:43:57,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:57,966 INFO L85 PathProgramCache]: Analyzing trace with hash -909578388, now seen corresponding path program 1 times [2024-12-02 12:43:57,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:57,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624074773] [2024-12-02 12:43:57,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:57,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:58,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:59,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 794 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2024-12-02 12:43:59,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:59,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624074773] [2024-12-02 12:43:59,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624074773] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:43:59,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:43:59,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:43:59,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756556731] [2024-12-02 12:43:59,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:43:59,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:43:59,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:59,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:43:59,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:43:59,013 INFO L87 Difference]: Start difference. First operand 160134 states and 167765 transitions. Second operand has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 0 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 12:44:05,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:44:05,111 INFO L93 Difference]: Finished difference Result 376980 states and 397278 transitions. [2024-12-02 12:44:05,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:44:05,112 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 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 628 [2024-12-02 12:44:05,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:44:05,367 INFO L225 Difference]: With dead ends: 376980 [2024-12-02 12:44:05,367 INFO L226 Difference]: Without dead ends: 233382 [2024-12-02 12:44:05,442 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:44:05,443 INFO L435 NwaCegarLoop]: 598 mSDtfsCounter, 1508 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 3980 mSolverCounterSat, 1205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 5185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1205 IncrementalHoareTripleChecker+Valid, 3980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:44:05,443 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 794 Invalid, 5185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1205 Valid, 3980 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-12-02 12:44:05,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233382 states. [2024-12-02 12:44:07,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233382 to 208175. [2024-12-02 12:44:07,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208175 states, 208174 states have (on average 1.0480943825838) internal successors, (218186), 208174 states have internal predecessors, (218186), 0 states have call successors, (0), 0 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 12:44:07,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208175 states to 208175 states and 218186 transitions. [2024-12-02 12:44:07,897 INFO L78 Accepts]: Start accepts. Automaton has 208175 states and 218186 transitions. Word has length 628 [2024-12-02 12:44:07,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:44:07,898 INFO L471 AbstractCegarLoop]: Abstraction has 208175 states and 218186 transitions. [2024-12-02 12:44:07,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 0 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 12:44:07,898 INFO L276 IsEmpty]: Start isEmpty. Operand 208175 states and 218186 transitions. [2024-12-02 12:44:07,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 810 [2024-12-02 12:44:07,924 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:44:07,925 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:44:07,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 12:44:07,925 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:44:07,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:44:07,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1760410829, now seen corresponding path program 1 times [2024-12-02 12:44:07,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:44:07,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283459022] [2024-12-02 12:44:07,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:44:07,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:44:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:44:08,667 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 568 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-12-02 12:44:08,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:44:08,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283459022] [2024-12-02 12:44:08,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283459022] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:44:08,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:44:08,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:44:08,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408553828] [2024-12-02 12:44:08,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:44:08,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:44:08,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:44:08,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:44:08,669 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:44:08,670 INFO L87 Difference]: Start difference. First operand 208175 states and 218186 transitions. Second operand has 4 states, 4 states have (on average 174.75) internal successors, (699), 4 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 12:44:16,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:44:16,637 INFO L93 Difference]: Finished difference Result 524371 states and 549827 transitions. [2024-12-02 12:44:16,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:44:16,637 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 174.75) internal successors, (699), 4 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) Word has length 809 [2024-12-02 12:44:16,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:44:16,906 INFO L225 Difference]: With dead ends: 524371 [2024-12-02 12:44:16,906 INFO L226 Difference]: Without dead ends: 316985 [2024-12-02 12:44:16,958 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:44:16,959 INFO L435 NwaCegarLoop]: 731 mSDtfsCounter, 1702 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 6426 mSolverCounterSat, 1038 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1702 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 7464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1038 IncrementalHoareTripleChecker+Valid, 6426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-12-02 12:44:16,959 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1702 Valid, 977 Invalid, 7464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1038 Valid, 6426 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2024-12-02 12:44:17,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316985 states. [2024-12-02 12:44:19,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316985 to 259361. [2024-12-02 12:44:19,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259361 states, 259360 states have (on average 1.0452729796421962) internal successors, (271102), 259360 states have internal predecessors, (271102), 0 states have call successors, (0), 0 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 12:44:20,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259361 states to 259361 states and 271102 transitions. [2024-12-02 12:44:20,115 INFO L78 Accepts]: Start accepts. Automaton has 259361 states and 271102 transitions. Word has length 809 [2024-12-02 12:44:20,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:44:20,115 INFO L471 AbstractCegarLoop]: Abstraction has 259361 states and 271102 transitions. [2024-12-02 12:44:20,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 174.75) internal successors, (699), 4 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 12:44:20,115 INFO L276 IsEmpty]: Start isEmpty. Operand 259361 states and 271102 transitions. [2024-12-02 12:44:20,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2024-12-02 12:44:20,146 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:44:20,147 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:44:20,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 12:44:20,147 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:44:20,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:44:20,148 INFO L85 PathProgramCache]: Analyzing trace with hash 190605322, now seen corresponding path program 1 times [2024-12-02 12:44:20,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:44:20,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397636335] [2024-12-02 12:44:20,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:44:20,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:44:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:44:20,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1479 backedges. 1140 proven. 0 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2024-12-02 12:44:20,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:44:20,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397636335] [2024-12-02 12:44:20,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397636335] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:44:20,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:44:20,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:44:20,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619579649] [2024-12-02 12:44:20,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:44:20,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:44:20,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:44:20,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:44:20,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:44:20,776 INFO L87 Difference]: Start difference. First operand 259361 states and 271102 transitions. Second operand has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 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 12:44:25,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:44:25,352 INFO L93 Difference]: Finished difference Result 517934 states and 541341 transitions. [2024-12-02 12:44:25,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:44:25,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 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 838 [2024-12-02 12:44:25,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:44:25,576 INFO L225 Difference]: With dead ends: 517934 [2024-12-02 12:44:25,577 INFO L226 Difference]: Without dead ends: 259362 [2024-12-02 12:44:25,619 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 12:44:25,620 INFO L435 NwaCegarLoop]: 1355 mSDtfsCounter, 912 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 2442 mSolverCounterSat, 573 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 1428 SdHoareTripleChecker+Invalid, 3015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 573 IncrementalHoareTripleChecker+Valid, 2442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-12-02 12:44:25,620 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 1428 Invalid, 3015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [573 Valid, 2442 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-12-02 12:44:25,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259362 states. [2024-12-02 12:44:27,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259362 to 256203. [2024-12-02 12:44:28,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256203 states, 256202 states have (on average 1.0383642594515266) internal successors, (266031), 256202 states have internal predecessors, (266031), 0 states have call successors, (0), 0 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 12:44:28,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256203 states to 256203 states and 266031 transitions. [2024-12-02 12:44:28,624 INFO L78 Accepts]: Start accepts. Automaton has 256203 states and 266031 transitions. Word has length 838 [2024-12-02 12:44:28,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:44:28,624 INFO L471 AbstractCegarLoop]: Abstraction has 256203 states and 266031 transitions. [2024-12-02 12:44:28,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 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 12:44:28,624 INFO L276 IsEmpty]: Start isEmpty. Operand 256203 states and 266031 transitions. [2024-12-02 12:44:28,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 864 [2024-12-02 12:44:28,650 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:44:28,651 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:44:28,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 12:44:28,651 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:44:28,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:44:28,651 INFO L85 PathProgramCache]: Analyzing trace with hash 874675926, now seen corresponding path program 1 times [2024-12-02 12:44:28,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:44:28,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28613763] [2024-12-02 12:44:28,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:44:28,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:44:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:44:30,073 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 510 proven. 25 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 12:44:30,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:44:30,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28613763] [2024-12-02 12:44:30,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28613763] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:44:30,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681288203] [2024-12-02 12:44:30,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:44:30,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:44:30,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:44:30,075 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:44:30,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 12:44:30,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:44:30,354 INFO L256 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-12-02 12:44:30,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:44:34,813 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 535 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 12:44:34,813 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:44:34,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681288203] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:44:34,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:44:34,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2024-12-02 12:44:34,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526597091] [2024-12-02 12:44:34,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:44:34,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:44:34,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:44:34,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:44:34,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:44:34,815 INFO L87 Difference]: Start difference. First operand 256203 states and 266031 transitions. Second operand has 5 states, 5 states have (on average 167.8) internal successors, (839), 4 states have internal predecessors, (839), 0 states have call successors, (0), 0 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 12:44:41,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:44:41,168 INFO L93 Difference]: Finished difference Result 526607 states and 546913 transitions. [2024-12-02 12:44:41,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:44:41,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 167.8) internal successors, (839), 4 states have internal predecessors, (839), 0 states have call successors, (0), 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 863 [2024-12-02 12:44:41,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:44:41,415 INFO L225 Difference]: With dead ends: 526607 [2024-12-02 12:44:41,415 INFO L226 Difference]: Without dead ends: 281426 [2024-12-02 12:44:41,496 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 868 GetRequests, 862 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:44:41,497 INFO L435 NwaCegarLoop]: 811 mSDtfsCounter, 1275 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 6897 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 7073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 6897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-12-02 12:44:41,497 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1275 Valid, 1698 Invalid, 7073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 6897 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-12-02 12:44:41,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281426 states. [2024-12-02 12:44:43,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281426 to 265659. [2024-12-02 12:44:44,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265659 states, 265658 states have (on average 1.0383161809544603) internal successors, (275837), 265658 states have internal predecessors, (275837), 0 states have call successors, (0), 0 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 12:44:44,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265659 states to 265659 states and 275837 transitions. [2024-12-02 12:44:44,284 INFO L78 Accepts]: Start accepts. Automaton has 265659 states and 275837 transitions. Word has length 863 [2024-12-02 12:44:44,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:44:44,285 INFO L471 AbstractCegarLoop]: Abstraction has 265659 states and 275837 transitions. [2024-12-02 12:44:44,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 167.8) internal successors, (839), 4 states have internal predecessors, (839), 0 states have call successors, (0), 0 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 12:44:44,285 INFO L276 IsEmpty]: Start isEmpty. Operand 265659 states and 275837 transitions. [2024-12-02 12:44:44,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 892 [2024-12-02 12:44:44,315 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:44:44,316 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:44:44,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-12-02 12:44:44,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-12-02 12:44:44,516 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:44:44,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:44:44,517 INFO L85 PathProgramCache]: Analyzing trace with hash 660648451, now seen corresponding path program 1 times [2024-12-02 12:44:44,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:44:44,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526183564] [2024-12-02 12:44:44,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:44:44,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:44:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:44:46,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1427 backedges. 764 proven. 110 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2024-12-02 12:44:46,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:44:46,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526183564] [2024-12-02 12:44:46,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526183564] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:44:46,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095074813] [2024-12-02 12:44:46,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:44:46,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:44:46,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:44:46,391 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:44:46,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 12:44:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:44:46,677 INFO L256 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:44:46,684 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:44:47,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1427 backedges. 761 proven. 0 refuted. 0 times theorem prover too weak. 666 trivial. 0 not checked. [2024-12-02 12:44:47,215 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:44:47,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095074813] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:44:47,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:44:47,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-12-02 12:44:47,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190188370] [2024-12-02 12:44:47,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:44:47,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:44:47,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:44:47,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:44:47,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:44:47,216 INFO L87 Difference]: Start difference. First operand 265659 states and 275837 transitions. Second operand has 3 states, 3 states have (on average 145.0) internal successors, (435), 2 states have internal predecessors, (435), 0 states have call successors, (0), 0 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 12:44:49,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 12:44:52,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:44:52,084 INFO L93 Difference]: Finished difference Result 521099 states and 541393 transitions. [2024-12-02 12:44:52,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:44:52,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 2 states have internal predecessors, (435), 0 states have call successors, (0), 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 891 [2024-12-02 12:44:52,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:44:52,325 INFO L225 Difference]: With dead ends: 521099 [2024-12-02 12:44:52,326 INFO L226 Difference]: Without dead ends: 270397 [2024-12-02 12:44:52,428 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 895 GetRequests, 890 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:44:52,428 INFO L435 NwaCegarLoop]: 967 mSDtfsCounter, 679 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 2409 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 2516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-12-02 12:44:52,429 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [679 Valid, 1093 Invalid, 2516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 2409 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-12-02 12:44:52,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270397 states. [2024-12-02 12:44:54,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270397 to 270385. [2024-12-02 12:44:54,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270385 states, 270384 states have (on average 1.0346359252026747) internal successors, (279749), 270384 states have internal predecessors, (279749), 0 states have call successors, (0), 0 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 12:44:55,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270385 states to 270385 states and 279749 transitions. [2024-12-02 12:44:55,235 INFO L78 Accepts]: Start accepts. Automaton has 270385 states and 279749 transitions. Word has length 891 [2024-12-02 12:44:55,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:44:55,235 INFO L471 AbstractCegarLoop]: Abstraction has 270385 states and 279749 transitions. [2024-12-02 12:44:55,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 2 states have internal predecessors, (435), 0 states have call successors, (0), 0 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 12:44:55,235 INFO L276 IsEmpty]: Start isEmpty. Operand 270385 states and 279749 transitions. [2024-12-02 12:44:55,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 926 [2024-12-02 12:44:55,253 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:44:55,254 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:44:55,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 12:44:55,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-12-02 12:44:55,454 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:44:55,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:44:55,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1588670360, now seen corresponding path program 1 times [2024-12-02 12:44:55,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:44:55,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669594885] [2024-12-02 12:44:55,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:44:55,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:44:55,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:44:56,418 INFO L134 CoverageAnalysis]: Checked inductivity of 948 backedges. 829 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-12-02 12:44:56,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:44:56,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669594885] [2024-12-02 12:44:56,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669594885] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:44:56,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:44:56,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:44:56,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663692434] [2024-12-02 12:44:56,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:44:56,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:44:56,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:44:56,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:44:56,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:44:56,421 INFO L87 Difference]: Start difference. First operand 270385 states and 279749 transitions. Second operand has 3 states, 3 states have (on average 269.3333333333333) internal successors, (808), 3 states have internal predecessors, (808), 0 states have call successors, (0), 0 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 12:45:01,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:45:01,025 INFO L93 Difference]: Finished difference Result 533686 states and 552476 transitions. [2024-12-02 12:45:01,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:45:01,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 269.3333333333333) internal successors, (808), 3 states have internal predecessors, (808), 0 states have call successors, (0), 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 925 [2024-12-02 12:45:01,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:45:01,273 INFO L225 Difference]: With dead ends: 533686 [2024-12-02 12:45:01,273 INFO L226 Difference]: Without dead ends: 278257 [2024-12-02 12:45:01,366 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 12:45:01,366 INFO L435 NwaCegarLoop]: 1525 mSDtfsCounter, 517 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 2392 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 2599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 2392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-12-02 12:45:01,367 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 1638 Invalid, 2599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 2392 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-12-02 12:45:01,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278257 states. [2024-12-02 12:45:03,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278257 to 275893. [2024-12-02 12:45:03,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275893 states, 275892 states have (on average 1.03309265944645) internal successors, (285022), 275892 states have internal predecessors, (285022), 0 states have call successors, (0), 0 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 12:45:03,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275893 states to 275893 states and 285022 transitions. [2024-12-02 12:45:03,992 INFO L78 Accepts]: Start accepts. Automaton has 275893 states and 285022 transitions. Word has length 925 [2024-12-02 12:45:03,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:45:03,993 INFO L471 AbstractCegarLoop]: Abstraction has 275893 states and 285022 transitions. [2024-12-02 12:45:03,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 269.3333333333333) internal successors, (808), 3 states have internal predecessors, (808), 0 states have call successors, (0), 0 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 12:45:03,993 INFO L276 IsEmpty]: Start isEmpty. Operand 275893 states and 285022 transitions. [2024-12-02 12:45:04,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 997 [2024-12-02 12:45:04,015 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:45:04,015 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:45:04,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 12:45:04,015 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:45:04,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:45:04,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1239666343, now seen corresponding path program 1 times [2024-12-02 12:45:04,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:45:04,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877774855] [2024-12-02 12:45:04,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:45:04,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:45:04,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:45:04,914 INFO L134 CoverageAnalysis]: Checked inductivity of 886 backedges. 597 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-12-02 12:45:04,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:45:04,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877774855] [2024-12-02 12:45:04,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877774855] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:45:04,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:45:04,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:45:04,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971834011] [2024-12-02 12:45:04,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:45:04,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:45:04,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:45:04,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:45:04,916 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:45:04,916 INFO L87 Difference]: Start difference. First operand 275893 states and 285022 transitions. Second operand has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 0 states have call successors, (0), 0 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 12:45:09,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:45:09,551 INFO L93 Difference]: Finished difference Result 550222 states and 568396 transitions. [2024-12-02 12:45:09,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:45:09,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 0 states have call successors, (0), 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 996 [2024-12-02 12:45:09,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:45:09,799 INFO L225 Difference]: With dead ends: 550222 [2024-12-02 12:45:09,799 INFO L226 Difference]: Without dead ends: 275118 [2024-12-02 12:45:09,889 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 12:45:09,889 INFO L435 NwaCegarLoop]: 1153 mSDtfsCounter, 614 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 2285 mSolverCounterSat, 549 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 2834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 549 IncrementalHoareTripleChecker+Valid, 2285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-12-02 12:45:09,889 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [614 Valid, 1191 Invalid, 2834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [549 Valid, 2285 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-12-02 12:45:10,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275118 states. [2024-12-02 12:45:12,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275118 to 271948. [2024-12-02 12:45:12,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271948 states, 271947 states have (on average 1.0311641606636588) internal successors, (280422), 271947 states have internal predecessors, (280422), 0 states have call successors, (0), 0 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 12:45:12,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271948 states to 271948 states and 280422 transitions. [2024-12-02 12:45:12,738 INFO L78 Accepts]: Start accepts. Automaton has 271948 states and 280422 transitions. Word has length 996 [2024-12-02 12:45:12,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:45:12,738 INFO L471 AbstractCegarLoop]: Abstraction has 271948 states and 280422 transitions. [2024-12-02 12:45:12,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 0 states have call successors, (0), 0 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 12:45:12,739 INFO L276 IsEmpty]: Start isEmpty. Operand 271948 states and 280422 transitions. [2024-12-02 12:45:12,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1120 [2024-12-02 12:45:12,779 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:45:12,779 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:45:12,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 12:45:12,780 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:45:12,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:45:12,780 INFO L85 PathProgramCache]: Analyzing trace with hash -912843375, now seen corresponding path program 1 times [2024-12-02 12:45:12,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:45:12,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311733679] [2024-12-02 12:45:12,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:45:12,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:45:12,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:45:13,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1726 backedges. 663 proven. 0 refuted. 0 times theorem prover too weak. 1063 trivial. 0 not checked. [2024-12-02 12:45:13,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:45:13,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311733679] [2024-12-02 12:45:13,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311733679] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:45:13,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:45:13,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:45:13,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352860966] [2024-12-02 12:45:13,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:45:13,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:45:13,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:45:13,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:45:13,489 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:45:13,489 INFO L87 Difference]: Start difference. First operand 271948 states and 280422 transitions. Second operand has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 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 12:45:18,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:45:18,275 INFO L93 Difference]: Finished difference Result 547010 states and 564731 transitions. [2024-12-02 12:45:18,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:45:18,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 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 1119 [2024-12-02 12:45:18,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:45:18,525 INFO L225 Difference]: With dead ends: 547010 [2024-12-02 12:45:18,526 INFO L226 Difference]: Without dead ends: 292384 [2024-12-02 12:45:18,599 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 12:45:18,600 INFO L435 NwaCegarLoop]: 428 mSDtfsCounter, 894 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 2244 mSolverCounterSat, 896 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 3140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 896 IncrementalHoareTripleChecker+Valid, 2244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-12-02 12:45:18,600 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 476 Invalid, 3140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [896 Valid, 2244 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-12-02 12:45:18,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292384 states. [2024-12-02 12:45:21,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292384 to 278998. [2024-12-02 12:45:21,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278998 states, 278997 states have (on average 1.0300289967275633) internal successors, (287375), 278997 states have internal predecessors, (287375), 0 states have call successors, (0), 0 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 12:45:21,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278998 states to 278998 states and 287375 transitions. [2024-12-02 12:45:21,382 INFO L78 Accepts]: Start accepts. Automaton has 278998 states and 287375 transitions. Word has length 1119 [2024-12-02 12:45:21,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:45:21,383 INFO L471 AbstractCegarLoop]: Abstraction has 278998 states and 287375 transitions. [2024-12-02 12:45:21,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 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 12:45:21,383 INFO L276 IsEmpty]: Start isEmpty. Operand 278998 states and 287375 transitions. [2024-12-02 12:45:21,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1148 [2024-12-02 12:45:21,410 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:45:21,411 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:45:21,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-02 12:45:21,411 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:45:21,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:45:21,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1949672846, now seen corresponding path program 1 times [2024-12-02 12:45:21,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:45:21,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751234536] [2024-12-02 12:45:21,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:45:21,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:45:21,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:45:22,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1047 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 974 trivial. 0 not checked. [2024-12-02 12:45:22,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:45:22,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751234536] [2024-12-02 12:45:22,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751234536] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:45:22,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:45:22,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:45:22,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069273780] [2024-12-02 12:45:22,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:45:22,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:45:22,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:45:22,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:45:22,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:45:22,737 INFO L87 Difference]: Start difference. First operand 278998 states and 287375 transitions. Second operand has 4 states, 4 states have (on average 118.0) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 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 12:45:28,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:45:28,582 INFO L93 Difference]: Finished difference Result 603662 states and 622480 transitions. [2024-12-02 12:45:28,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:45:28,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 118.0) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 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 1147 [2024-12-02 12:45:28,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:45:28,888 INFO L225 Difference]: With dead ends: 603662 [2024-12-02 12:45:28,888 INFO L226 Difference]: Without dead ends: 341986 [2024-12-02 12:45:28,950 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:45:28,950 INFO L435 NwaCegarLoop]: 545 mSDtfsCounter, 1360 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 4321 mSolverCounterSat, 870 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1360 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 5191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 870 IncrementalHoareTripleChecker+Valid, 4321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-12-02 12:45:28,950 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1360 Valid, 678 Invalid, 5191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [870 Valid, 4321 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-12-02 12:45:29,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341986 states. [2024-12-02 12:45:31,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341986 to 316781. [2024-12-02 12:45:31,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316781 states, 316780 states have (on average 1.0277163962371363) internal successors, (325560), 316780 states have internal predecessors, (325560), 0 states have call successors, (0), 0 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 12:45:32,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316781 states to 316781 states and 325560 transitions. [2024-12-02 12:45:32,101 INFO L78 Accepts]: Start accepts. Automaton has 316781 states and 325560 transitions. Word has length 1147 [2024-12-02 12:45:32,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:45:32,101 INFO L471 AbstractCegarLoop]: Abstraction has 316781 states and 325560 transitions. [2024-12-02 12:45:32,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.0) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 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 12:45:32,101 INFO L276 IsEmpty]: Start isEmpty. Operand 316781 states and 325560 transitions. [2024-12-02 12:45:32,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1196 [2024-12-02 12:45:32,135 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:45:32,135 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:45:32,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-12-02 12:45:32,136 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:45:32,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:45:32,136 INFO L85 PathProgramCache]: Analyzing trace with hash -83342505, now seen corresponding path program 1 times [2024-12-02 12:45:32,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:45:32,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973687051] [2024-12-02 12:45:32,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:45:32,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:45:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:45:33,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1236 backedges. 865 proven. 347 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-12-02 12:45:33,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:45:33,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973687051] [2024-12-02 12:45:33,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973687051] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:45:33,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353311990] [2024-12-02 12:45:33,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:45:33,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:45:33,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:45:33,365 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:45:33,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00047c2c-578d-450a-9eb8-b045ed3f04c1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 12:45:33,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:45:33,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 1380 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 12:45:33,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:45:34,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1236 backedges. 865 proven. 347 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-12-02 12:45:34,428 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:45:34,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1236 backedges. 1117 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-12-02 12:45:34,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353311990] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 12:45:34,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 12:45:34,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2024-12-02 12:45:34,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555500051] [2024-12-02 12:45:34,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:45:34,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:45:34,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:45:34,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:45:34,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:45:34,668 INFO L87 Difference]: Start difference. First operand 316781 states and 325560 transitions. Second operand has 3 states, 3 states have (on average 359.3333333333333) internal successors, (1078), 3 states have internal predecessors, (1078), 0 states have call successors, (0), 0 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 12:45:39,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:45:39,480 INFO L93 Difference]: Finished difference Result 654848 states and 673027 transitions. [2024-12-02 12:45:39,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:45:39,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 359.3333333333333) internal successors, (1078), 3 states have internal predecessors, (1078), 0 states have call successors, (0), 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 1195 [2024-12-02 12:45:39,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:45:39,785 INFO L225 Difference]: With dead ends: 654848 [2024-12-02 12:45:39,785 INFO L226 Difference]: Without dead ends: 342793 [2024-12-02 12:45:39,888 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2392 GetRequests, 2388 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:45:39,889 INFO L435 NwaCegarLoop]: 1492 mSDtfsCounter, 610 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 2678 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 1599 SdHoareTripleChecker+Invalid, 2945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 2678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-12-02 12:45:39,889 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 1599 Invalid, 2945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 2678 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-12-02 12:45:40,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342793 states.