./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-71.i --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_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/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_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-71.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/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_9da50762-3cda-403f-ae5d-6b287ed76cd2/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 182636466dd7ed34c7e4a19dcd08446c47e3ac770c4a66384f8d4d043f90aba6 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 07:05:00,375 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 07:05:00,433 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 07:05:00,438 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 07:05:00,438 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 07:05:00,462 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 07:05:00,463 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 07:05:00,463 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 07:05:00,463 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 07:05:00,463 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 07:05:00,464 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 07:05:00,464 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 07:05:00,464 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 07:05:00,464 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 07:05:00,464 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 07:05:00,464 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 07:05:00,465 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 07:05:00,465 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 07:05:00,465 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 07:05:00,465 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 07:05:00,465 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 07:05:00,465 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 07:05:00,465 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 07:05:00,465 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 07:05:00,465 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 07:05:00,465 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 07:05:00,466 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 07:05:00,466 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 07:05:00,466 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 07:05:00,466 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:05:00,466 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:05:00,466 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:05:00,466 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:05:00,466 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 07:05:00,466 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:05:00,466 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:05:00,466 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:05:00,467 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:05:00,467 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 07:05:00,467 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 07:05:00,467 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 07:05:00,467 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 07:05:00,468 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 07:05:00,468 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 07:05:00,468 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 07:05:00,468 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 07:05:00,468 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 07:05:00,468 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 07:05:00,468 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_9da50762-3cda-403f-ae5d-6b287ed76cd2/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 -> 182636466dd7ed34c7e4a19dcd08446c47e3ac770c4a66384f8d4d043f90aba6 [2024-12-02 07:05:00,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 07:05:00,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 07:05:00,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 07:05:00,712 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 07:05:00,713 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 07:05:00,714 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-71.i [2024-12-02 07:05:03,338 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/data/67a9aaa86/02b05e381d354df2a57728d7633f0edc/FLAG6a9c0d990 [2024-12-02 07:05:03,594 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 07:05:03,594 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-71.i [2024-12-02 07:05:03,604 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/data/67a9aaa86/02b05e381d354df2a57728d7633f0edc/FLAG6a9c0d990 [2024-12-02 07:05:03,925 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/data/67a9aaa86/02b05e381d354df2a57728d7633f0edc [2024-12-02 07:05:03,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 07:05:03,927 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 07:05:03,928 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 07:05:03,928 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 07:05:03,931 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 07:05:03,932 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:05:03" (1/1) ... [2024-12-02 07:05:03,932 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb1b8ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:03, skipping insertion in model container [2024-12-02 07:05:03,933 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:05:03" (1/1) ... [2024-12-02 07:05:03,955 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 07:05:04,092 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_9da50762-3cda-403f-ae5d-6b287ed76cd2/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-71.i[916,929] [2024-12-02 07:05:04,204 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:05:04,214 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 07:05:04,223 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_9da50762-3cda-403f-ae5d-6b287ed76cd2/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-71.i[916,929] [2024-12-02 07:05:04,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:05:04,307 INFO L204 MainTranslator]: Completed translation [2024-12-02 07:05:04,307 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:04 WrapperNode [2024-12-02 07:05:04,307 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 07:05:04,309 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 07:05:04,309 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 07:05:04,309 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 07:05:04,315 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:04" (1/1) ... [2024-12-02 07:05:04,329 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:04" (1/1) ... [2024-12-02 07:05:04,367 INFO L138 Inliner]: procedures = 26, calls = 102, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 563 [2024-12-02 07:05:04,367 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 07:05:04,368 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 07:05:04,368 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 07:05:04,368 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 07:05:04,377 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:04" (1/1) ... [2024-12-02 07:05:04,378 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:04" (1/1) ... [2024-12-02 07:05:04,383 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:04" (1/1) ... [2024-12-02 07:05:04,405 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 07:05:04,406 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:04" (1/1) ... [2024-12-02 07:05:04,406 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:04" (1/1) ... [2024-12-02 07:05:04,424 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:04" (1/1) ... [2024-12-02 07:05:04,427 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:04" (1/1) ... [2024-12-02 07:05:04,432 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:04" (1/1) ... [2024-12-02 07:05:04,438 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:04" (1/1) ... [2024-12-02 07:05:04,440 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:04" (1/1) ... [2024-12-02 07:05:04,449 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 07:05:04,449 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 07:05:04,450 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 07:05:04,450 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 07:05:04,450 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:04" (1/1) ... [2024-12-02 07:05:04,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:05:04,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:05:04,479 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 07:05:04,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 07:05:04,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 07:05:04,506 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 07:05:04,506 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 07:05:04,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 07:05:04,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 07:05:04,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 07:05:04,609 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 07:05:04,610 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 07:05:05,334 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-12-02 07:05:05,334 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 07:05:05,349 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 07:05:05,349 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 07:05:05,349 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:05:05 BoogieIcfgContainer [2024-12-02 07:05:05,349 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 07:05:05,352 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 07:05:05,352 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 07:05:05,356 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 07:05:05,356 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:05:03" (1/3) ... [2024-12-02 07:05:05,357 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d82dbaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:05:05, skipping insertion in model container [2024-12-02 07:05:05,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:05:04" (2/3) ... [2024-12-02 07:05:05,357 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d82dbaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:05:05, skipping insertion in model container [2024-12-02 07:05:05,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:05:05" (3/3) ... [2024-12-02 07:05:05,359 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-71.i [2024-12-02 07:05:05,374 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 07:05:05,377 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-71.i that has 2 procedures, 236 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 07:05:05,439 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:05:05,451 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;@6c2635dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:05:05,451 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 07:05:05,456 INFO L276 IsEmpty]: Start isEmpty. Operand has 236 states, 144 states have (on average 1.4861111111111112) internal successors, (214), 145 states have internal predecessors, (214), 89 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2024-12-02 07:05:05,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2024-12-02 07:05:05,481 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:05:05,482 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:05:05,482 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:05:05,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:05:05,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1714954210, now seen corresponding path program 1 times [2024-12-02 07:05:05,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:05:05,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884159238] [2024-12-02 07:05:05,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:05,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:05:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:06,004 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 15488 trivial. 0 not checked. [2024-12-02 07:05:06,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:05:06,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884159238] [2024-12-02 07:05:06,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884159238] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:05:06,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884450503] [2024-12-02 07:05:06,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:06,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:05:06,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:05:06,008 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:05:06,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 07:05:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:06,364 INFO L256 TraceCheckSpWp]: Trace formula consists of 1193 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 07:05:06,380 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:05:06,434 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 15488 trivial. 0 not checked. [2024-12-02 07:05:06,434 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:05:06,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884450503] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:05:06,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:05:06,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 07:05:06,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248389854] [2024-12-02 07:05:06,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:05:06,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 07:05:06,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:05:06,456 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 07:05:06,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 07:05:06,459 INFO L87 Difference]: Start difference. First operand has 236 states, 144 states have (on average 1.4861111111111112) internal successors, (214), 145 states have internal predecessors, (214), 89 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) Second operand has 2 states, 2 states have (on average 52.5) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (89), 2 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 2 states have call successors, (89) [2024-12-02 07:05:06,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:05:06,505 INFO L93 Difference]: Finished difference Result 465 states and 867 transitions. [2024-12-02 07:05:06,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 07:05:06,507 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 52.5) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (89), 2 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 2 states have call successors, (89) Word has length 545 [2024-12-02 07:05:06,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:05:06,516 INFO L225 Difference]: With dead ends: 465 [2024-12-02 07:05:06,516 INFO L226 Difference]: Without dead ends: 232 [2024-12-02 07:05:06,521 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 546 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 07:05:06,524 INFO L435 NwaCegarLoop]: 385 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:05:06,524 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:05:06,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-12-02 07:05:06,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2024-12-02 07:05:06,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 141 states have (on average 1.4680851063829787) internal successors, (207), 141 states have internal predecessors, (207), 89 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2024-12-02 07:05:06,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 385 transitions. [2024-12-02 07:05:06,594 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 385 transitions. Word has length 545 [2024-12-02 07:05:06,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:05:06,594 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 385 transitions. [2024-12-02 07:05:06,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 52.5) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (89), 2 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 2 states have call successors, (89) [2024-12-02 07:05:06,595 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 385 transitions. [2024-12-02 07:05:06,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2024-12-02 07:05:06,609 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:05:06,609 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:05:06,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 07:05:06,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 07:05:06,810 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:05:06,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:05:06,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1996792872, now seen corresponding path program 1 times [2024-12-02 07:05:06,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:05:06,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110271027] [2024-12-02 07:05:06,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:06,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:05:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:07,889 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-12-02 07:05:07,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:05:07,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110271027] [2024-12-02 07:05:07,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110271027] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:05:07,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:05:07,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:05:07,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134824219] [2024-12-02 07:05:07,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:05:07,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:05:07,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:05:07,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:05:07,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:05:07,894 INFO L87 Difference]: Start difference. First operand 232 states and 385 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-12-02 07:05:07,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:05:07,947 INFO L93 Difference]: Finished difference Result 462 states and 769 transitions. [2024-12-02 07:05:07,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:05:07,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 545 [2024-12-02 07:05:07,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:05:07,954 INFO L225 Difference]: With dead ends: 462 [2024-12-02 07:05:07,954 INFO L226 Difference]: Without dead ends: 233 [2024-12-02 07:05:07,955 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:05:07,956 INFO L435 NwaCegarLoop]: 384 mSDtfsCounter, 0 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:05:07,956 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 762 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:05:07,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2024-12-02 07:05:07,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2024-12-02 07:05:07,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 142 states have (on average 1.4647887323943662) internal successors, (208), 142 states have internal predecessors, (208), 89 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2024-12-02 07:05:07,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 386 transitions. [2024-12-02 07:05:07,989 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 386 transitions. Word has length 545 [2024-12-02 07:05:07,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:05:07,992 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 386 transitions. [2024-12-02 07:05:07,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-12-02 07:05:07,992 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 386 transitions. [2024-12-02 07:05:08,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2024-12-02 07:05:08,000 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:05:08,001 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:05:08,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 07:05:08,001 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:05:08,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:05:08,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1788701334, now seen corresponding path program 1 times [2024-12-02 07:05:08,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:05:08,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471889861] [2024-12-02 07:05:08,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:08,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:05:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:09,342 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 231 proven. 291 refuted. 0 times theorem prover too weak. 15142 trivial. 0 not checked. [2024-12-02 07:05:09,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:05:09,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471889861] [2024-12-02 07:05:09,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471889861] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:05:09,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609388575] [2024-12-02 07:05:09,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:05:09,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:05:09,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:05:09,346 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:05:09,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 07:05:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:05:09,702 INFO L256 TraceCheckSpWp]: Trace formula consists of 1195 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 07:05:09,715 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:05:11,510 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 6514 proven. 75 refuted. 0 times theorem prover too weak. 9075 trivial. 0 not checked. [2024-12-02 07:05:11,510 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:06:38,990 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 189 proven. 75 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2024-12-02 07:06:38,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609388575] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:06:38,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:06:38,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 8] total 18 [2024-12-02 07:06:38,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274450204] [2024-12-02 07:06:38,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:06:38,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 07:06:38,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:06:38,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 07:06:38,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-12-02 07:06:38,995 INFO L87 Difference]: Start difference. First operand 233 states and 386 transitions. Second operand has 18 states, 18 states have (on average 15.333333333333334) internal successors, (276), 18 states have internal predecessors, (276), 7 states have call successors, (267), 3 states have call predecessors, (267), 6 states have return successors, (267), 7 states have call predecessors, (267), 7 states have call successors, (267) [2024-12-02 07:06:48,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:06:48,473 INFO L93 Difference]: Finished difference Result 3167 states and 5112 transitions. [2024-12-02 07:06:48,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2024-12-02 07:06:48,474 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 15.333333333333334) internal successors, (276), 18 states have internal predecessors, (276), 7 states have call successors, (267), 3 states have call predecessors, (267), 6 states have return successors, (267), 7 states have call predecessors, (267), 7 states have call successors, (267) Word has length 545 [2024-12-02 07:06:48,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:06:48,493 INFO L225 Difference]: With dead ends: 3167 [2024-12-02 07:06:48,493 INFO L226 Difference]: Without dead ends: 2937 [2024-12-02 07:06:48,498 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1262 GetRequests, 1110 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10636 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=4189, Invalid=19373, Unknown=0, NotChecked=0, Total=23562 [2024-12-02 07:06:48,499 INFO L435 NwaCegarLoop]: 358 mSDtfsCounter, 5843 mSDsluCounter, 2654 mSDsCounter, 0 mSdLazyCounter, 3650 mSolverCounterSat, 5042 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5854 SdHoareTripleChecker+Valid, 3012 SdHoareTripleChecker+Invalid, 8692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5042 IncrementalHoareTripleChecker+Valid, 3650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:06:48,499 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5854 Valid, 3012 Invalid, 8692 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5042 Valid, 3650 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-12-02 07:06:48,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2024-12-02 07:06:48,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1431. [2024-12-02 07:06:48,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1431 states, 889 states have (on average 1.4600674915635545) internal successors, (1298), 893 states have internal predecessors, (1298), 519 states have call successors, (519), 22 states have call predecessors, (519), 22 states have return successors, (519), 515 states have call predecessors, (519), 519 states have call successors, (519) [2024-12-02 07:06:48,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 2336 transitions. [2024-12-02 07:06:48,800 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 2336 transitions. Word has length 545 [2024-12-02 07:06:48,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:06:48,801 INFO L471 AbstractCegarLoop]: Abstraction has 1431 states and 2336 transitions. [2024-12-02 07:06:48,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 15.333333333333334) internal successors, (276), 18 states have internal predecessors, (276), 7 states have call successors, (267), 3 states have call predecessors, (267), 6 states have return successors, (267), 7 states have call predecessors, (267), 7 states have call successors, (267) [2024-12-02 07:06:48,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 2336 transitions. [2024-12-02 07:06:48,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2024-12-02 07:06:48,804 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:06:48,804 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:06:48,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-12-02 07:06:49,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:06:49,005 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:06:49,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:06:49,006 INFO L85 PathProgramCache]: Analyzing trace with hash 262366037, now seen corresponding path program 1 times [2024-12-02 07:06:49,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:06:49,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448657989] [2024-12-02 07:06:49,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:06:49,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:06:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:06:52,999 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 276 proven. 246 refuted. 0 times theorem prover too weak. 15142 trivial. 0 not checked. [2024-12-02 07:06:52,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:06:52,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448657989] [2024-12-02 07:06:53,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448657989] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:06:53,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382540446] [2024-12-02 07:06:53,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:06:53,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:06:53,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:06:53,002 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:06:53,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 07:06:53,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:06:53,259 INFO L256 TraceCheckSpWp]: Trace formula consists of 1196 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-12-02 07:06:53,280 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:06:57,736 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 10305 proven. 543 refuted. 0 times theorem prover too weak. 4816 trivial. 0 not checked. [2024-12-02 07:06:57,736 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:07:24,155 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 600 proven. 438 refuted. 0 times theorem prover too weak. 14626 trivial. 0 not checked. [2024-12-02 07:07:24,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382540446] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:07:24,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:07:24,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 20, 25] total 54 [2024-12-02 07:07:24,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851250279] [2024-12-02 07:07:24,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:07:24,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-12-02 07:07:24,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:07:24,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-12-02 07:07:24,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=489, Invalid=2373, Unknown=0, NotChecked=0, Total=2862 [2024-12-02 07:07:24,158 INFO L87 Difference]: Start difference. First operand 1431 states and 2336 transitions. Second operand has 54 states, 52 states have (on average 5.423076923076923) internal successors, (282), 50 states have internal predecessors, (282), 13 states have call successors, (267), 7 states have call predecessors, (267), 15 states have return successors, (267), 13 states have call predecessors, (267), 13 states have call successors, (267) [2024-12-02 07:11:00,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:11:00,563 INFO L93 Difference]: Finished difference Result 41834 states and 66691 transitions. [2024-12-02 07:11:00,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 395 states. [2024-12-02 07:11:00,564 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 52 states have (on average 5.423076923076923) internal successors, (282), 50 states have internal predecessors, (282), 13 states have call successors, (267), 7 states have call predecessors, (267), 15 states have return successors, (267), 13 states have call predecessors, (267), 13 states have call successors, (267) Word has length 546 [2024-12-02 07:11:00,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:11:00,780 INFO L225 Difference]: With dead ends: 41834 [2024-12-02 07:11:00,781 INFO L226 Difference]: Without dead ends: 40406 [2024-12-02 07:11:00,828 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1562 GetRequests, 1137 SyntacticMatches, 0 SemanticMatches, 425 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83301 ImplicationChecksByTransitivity, 135.1s TimeCoverageRelationStatistics Valid=29421, Invalid=152481, Unknown=0, NotChecked=0, Total=181902 [2024-12-02 07:11:00,829 INFO L435 NwaCegarLoop]: 1594 mSDtfsCounter, 12671 mSDsluCounter, 21896 mSDsCounter, 0 mSdLazyCounter, 29570 mSolverCounterSat, 8215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12790 SdHoareTripleChecker+Valid, 23490 SdHoareTripleChecker+Invalid, 37785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 8215 IncrementalHoareTripleChecker+Valid, 29570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:11:00,829 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12790 Valid, 23490 Invalid, 37785 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [8215 Valid, 29570 Invalid, 0 Unknown, 0 Unchecked, 80.1s Time] [2024-12-02 07:11:00,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40406 states. [2024-12-02 07:11:03,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40406 to 6730. [2024-12-02 07:11:03,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6730 states, 4308 states have (on average 1.467966573816156) internal successors, (6324), 4351 states have internal predecessors, (6324), 2322 states have call successors, (2322), 99 states have call predecessors, (2322), 99 states have return successors, (2322), 2279 states have call predecessors, (2322), 2322 states have call successors, (2322) [2024-12-02 07:11:03,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6730 states to 6730 states and 10968 transitions. [2024-12-02 07:11:03,845 INFO L78 Accepts]: Start accepts. Automaton has 6730 states and 10968 transitions. Word has length 546 [2024-12-02 07:11:03,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:11:03,846 INFO L471 AbstractCegarLoop]: Abstraction has 6730 states and 10968 transitions. [2024-12-02 07:11:03,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 52 states have (on average 5.423076923076923) internal successors, (282), 50 states have internal predecessors, (282), 13 states have call successors, (267), 7 states have call predecessors, (267), 15 states have return successors, (267), 13 states have call predecessors, (267), 13 states have call successors, (267) [2024-12-02 07:11:03,847 INFO L276 IsEmpty]: Start isEmpty. Operand 6730 states and 10968 transitions. [2024-12-02 07:11:03,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2024-12-02 07:11:03,858 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:11:03,858 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:11:03,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 07:11:04,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:11:04,059 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:11:04,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:11:04,060 INFO L85 PathProgramCache]: Analyzing trace with hash -132000749, now seen corresponding path program 1 times [2024-12-02 07:11:04,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:11:04,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153709157] [2024-12-02 07:11:04,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:11:04,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:11:04,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:11:04,434 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-12-02 07:11:04,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:11:04,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153709157] [2024-12-02 07:11:04,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153709157] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:11:04,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:11:04,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:11:04,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363319292] [2024-12-02 07:11:04,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:11:04,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:11:04,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:11:04,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:11:04,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:11:04,437 INFO L87 Difference]: Start difference. First operand 6730 states and 10968 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-12-02 07:11:06,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:11:06,452 INFO L93 Difference]: Finished difference Result 14508 states and 23652 transitions. [2024-12-02 07:11:06,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:11:06,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 546 [2024-12-02 07:11:06,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:11:06,475 INFO L225 Difference]: With dead ends: 14508 [2024-12-02 07:11:06,475 INFO L226 Difference]: Without dead ends: 7781 [2024-12-02 07:11:06,488 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:11:06,489 INFO L435 NwaCegarLoop]: 473 mSDtfsCounter, 215 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:11:06,489 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 832 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:11:06,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7781 states. [2024-12-02 07:11:08,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7781 to 7680. [2024-12-02 07:11:08,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7680 states, 4948 states have (on average 1.4706952303961196) internal successors, (7277), 4994 states have internal predecessors, (7277), 2609 states have call successors, (2609), 122 states have call predecessors, (2609), 122 states have return successors, (2609), 2563 states have call predecessors, (2609), 2609 states have call successors, (2609) [2024-12-02 07:11:08,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7680 states to 7680 states and 12495 transitions. [2024-12-02 07:11:08,856 INFO L78 Accepts]: Start accepts. Automaton has 7680 states and 12495 transitions. Word has length 546 [2024-12-02 07:11:08,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:11:08,857 INFO L471 AbstractCegarLoop]: Abstraction has 7680 states and 12495 transitions. [2024-12-02 07:11:08,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-12-02 07:11:08,857 INFO L276 IsEmpty]: Start isEmpty. Operand 7680 states and 12495 transitions. [2024-12-02 07:11:08,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2024-12-02 07:11:08,865 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:11:08,866 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:11:08,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 07:11:08,866 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:11:08,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:11:08,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1521835733, now seen corresponding path program 1 times [2024-12-02 07:11:08,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:11:08,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107834956] [2024-12-02 07:11:08,867 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:11:08,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:11:08,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:11:12,210 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-12-02 07:11:12,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:11:12,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107834956] [2024-12-02 07:11:12,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107834956] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:11:12,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:11:12,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 07:11:12,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695056915] [2024-12-02 07:11:12,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:11:12,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 07:11:12,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:11:12,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 07:11:12,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-12-02 07:11:12,212 INFO L87 Difference]: Start difference. First operand 7680 states and 12495 transitions. Second operand has 13 states, 13 states have (on average 8.076923076923077) internal successors, (105), 13 states have internal predecessors, (105), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-12-02 07:11:23,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:11:23,071 INFO L93 Difference]: Finished difference Result 20449 states and 33210 transitions. [2024-12-02 07:11:23,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 07:11:23,071 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.076923076923077) internal successors, (105), 13 states have internal predecessors, (105), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 547 [2024-12-02 07:11:23,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:11:23,106 INFO L225 Difference]: With dead ends: 20449 [2024-12-02 07:11:23,106 INFO L226 Difference]: Without dead ends: 14179 [2024-12-02 07:11:23,119 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=178, Invalid=422, Unknown=0, NotChecked=0, Total=600 [2024-12-02 07:11:23,120 INFO L435 NwaCegarLoop]: 438 mSDtfsCounter, 2356 mSDsluCounter, 3114 mSDsCounter, 0 mSdLazyCounter, 2528 mSolverCounterSat, 1353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2356 SdHoareTripleChecker+Valid, 3552 SdHoareTripleChecker+Invalid, 3881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1353 IncrementalHoareTripleChecker+Valid, 2528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-12-02 07:11:23,120 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2356 Valid, 3552 Invalid, 3881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1353 Valid, 2528 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-12-02 07:11:23,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14179 states. [2024-12-02 07:11:26,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14179 to 11334. [2024-12-02 07:11:26,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11334 states, 7702 states have (on average 1.5124642949883147) internal successors, (11649), 7778 states have internal predecessors, (11649), 3469 states have call successors, (3469), 162 states have call predecessors, (3469), 162 states have return successors, (3469), 3393 states have call predecessors, (3469), 3469 states have call successors, (3469) [2024-12-02 07:11:26,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11334 states to 11334 states and 18587 transitions. [2024-12-02 07:11:26,194 INFO L78 Accepts]: Start accepts. Automaton has 11334 states and 18587 transitions. Word has length 547 [2024-12-02 07:11:26,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:11:26,195 INFO L471 AbstractCegarLoop]: Abstraction has 11334 states and 18587 transitions. [2024-12-02 07:11:26,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.076923076923077) internal successors, (105), 13 states have internal predecessors, (105), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-12-02 07:11:26,195 INFO L276 IsEmpty]: Start isEmpty. Operand 11334 states and 18587 transitions. [2024-12-02 07:11:26,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2024-12-02 07:11:26,200 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:11:26,200 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:11:26,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 07:11:26,200 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:11:26,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:11:26,201 INFO L85 PathProgramCache]: Analyzing trace with hash 826639531, now seen corresponding path program 1 times [2024-12-02 07:11:26,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:11:26,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619834312] [2024-12-02 07:11:26,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:11:26,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:11:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:11:26,390 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-12-02 07:11:26,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:11:26,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619834312] [2024-12-02 07:11:26,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619834312] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:11:26,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:11:26,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 07:11:26,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378549132] [2024-12-02 07:11:26,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:11:26,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:11:26,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:11:26,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:11:26,392 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:11:26,392 INFO L87 Difference]: Start difference. First operand 11334 states and 18587 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-12-02 07:11:32,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:11:32,496 INFO L93 Difference]: Finished difference Result 30635 states and 49916 transitions. [2024-12-02 07:11:32,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 07:11:32,497 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 547 [2024-12-02 07:11:32,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:11:32,571 INFO L225 Difference]: With dead ends: 30635 [2024-12-02 07:11:32,571 INFO L226 Difference]: Without dead ends: 21966 [2024-12-02 07:11:32,601 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:11:32,601 INFO L435 NwaCegarLoop]: 731 mSDtfsCounter, 589 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 07:11:32,602 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [589 Valid, 1709 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 07:11:32,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21966 states. [2024-12-02 07:11:37,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21966 to 16524. [2024-12-02 07:11:37,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16524 states, 11121 states have (on average 1.501573599496448) internal successors, (16699), 11229 states have internal predecessors, (16699), 5141 states have call successors, (5141), 261 states have call predecessors, (5141), 261 states have return successors, (5141), 5033 states have call predecessors, (5141), 5141 states have call successors, (5141) [2024-12-02 07:11:37,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16524 states to 16524 states and 26981 transitions. [2024-12-02 07:11:37,534 INFO L78 Accepts]: Start accepts. Automaton has 16524 states and 26981 transitions. Word has length 547 [2024-12-02 07:11:37,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:11:37,535 INFO L471 AbstractCegarLoop]: Abstraction has 16524 states and 26981 transitions. [2024-12-02 07:11:37,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-12-02 07:11:37,535 INFO L276 IsEmpty]: Start isEmpty. Operand 16524 states and 26981 transitions. [2024-12-02 07:11:37,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2024-12-02 07:11:37,543 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:11:37,543 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:11:37,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 07:11:37,544 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:11:37,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:11:37,544 INFO L85 PathProgramCache]: Analyzing trace with hash -256903733, now seen corresponding path program 1 times [2024-12-02 07:11:37,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:11:37,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492582068] [2024-12-02 07:11:37,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:11:37,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:11:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:11:39,965 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 189 proven. 75 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2024-12-02 07:11:39,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:11:39,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492582068] [2024-12-02 07:11:39,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492582068] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:11:39,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494301904] [2024-12-02 07:11:39,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:11:39,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:11:39,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:11:39,968 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:11:39,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 07:11:40,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:11:40,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 1194 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-12-02 07:11:40,290 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:11:48,533 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 11316 proven. 360 refuted. 0 times theorem prover too weak. 3988 trivial. 0 not checked. [2024-12-02 07:11:48,534 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:11:59,686 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 477 proven. 306 refuted. 0 times theorem prover too weak. 14881 trivial. 0 not checked. [2024-12-02 07:11:59,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494301904] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:11:59,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:11:59,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 25, 22] total 57 [2024-12-02 07:11:59,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210520092] [2024-12-02 07:11:59,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:11:59,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-12-02 07:11:59,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:11:59,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-12-02 07:11:59,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=577, Invalid=2615, Unknown=0, NotChecked=0, Total=3192 [2024-12-02 07:11:59,688 INFO L87 Difference]: Start difference. First operand 16524 states and 26981 transitions. Second operand has 57 states, 56 states have (on average 5.678571428571429) internal successors, (318), 55 states have internal predecessors, (318), 18 states have call successors, (267), 8 states have call predecessors, (267), 16 states have return successors, (267), 18 states have call predecessors, (267), 18 states have call successors, (267) [2024-12-02 07:13:26,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:13:26,791 INFO L93 Difference]: Finished difference Result 59516 states and 96511 transitions. [2024-12-02 07:13:26,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2024-12-02 07:13:26,792 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 5.678571428571429) internal successors, (318), 55 states have internal predecessors, (318), 18 states have call successors, (267), 8 states have call predecessors, (267), 16 states have return successors, (267), 18 states have call predecessors, (267), 18 states have call successors, (267) Word has length 547 [2024-12-02 07:13:26,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:13:26,927 INFO L225 Difference]: With dead ends: 59516 [2024-12-02 07:13:26,927 INFO L226 Difference]: Without dead ends: 43059 [2024-12-02 07:13:26,981 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1351 GetRequests, 1095 SyntacticMatches, 0 SemanticMatches, 256 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26121 ImplicationChecksByTransitivity, 29.1s TimeCoverageRelationStatistics Valid=13150, Invalid=53156, Unknown=0, NotChecked=0, Total=66306 [2024-12-02 07:13:26,982 INFO L435 NwaCegarLoop]: 621 mSDtfsCounter, 11848 mSDsluCounter, 13316 mSDsCounter, 0 mSdLazyCounter, 19180 mSolverCounterSat, 7606 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11989 SdHoareTripleChecker+Valid, 13937 SdHoareTripleChecker+Invalid, 26786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 7606 IncrementalHoareTripleChecker+Valid, 19180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.4s IncrementalHoareTripleChecker+Time [2024-12-02 07:13:26,982 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11989 Valid, 13937 Invalid, 26786 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [7606 Valid, 19180 Invalid, 0 Unknown, 0 Unchecked, 44.4s Time] [2024-12-02 07:13:27,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43059 states. [2024-12-02 07:13:32,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43059 to 15347. [2024-12-02 07:13:32,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15347 states, 10767 states have (on average 1.5352465867929785) internal successors, (16530), 10853 states have internal predecessors, (16530), 4330 states have call successors, (4330), 249 states have call predecessors, (4330), 249 states have return successors, (4330), 4244 states have call predecessors, (4330), 4330 states have call successors, (4330) [2024-12-02 07:13:32,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15347 states to 15347 states and 25190 transitions. [2024-12-02 07:13:32,546 INFO L78 Accepts]: Start accepts. Automaton has 15347 states and 25190 transitions. Word has length 547 [2024-12-02 07:13:32,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:13:32,547 INFO L471 AbstractCegarLoop]: Abstraction has 15347 states and 25190 transitions. [2024-12-02 07:13:32,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 5.678571428571429) internal successors, (318), 55 states have internal predecessors, (318), 18 states have call successors, (267), 8 states have call predecessors, (267), 16 states have return successors, (267), 18 states have call predecessors, (267), 18 states have call successors, (267) [2024-12-02 07:13:32,547 INFO L276 IsEmpty]: Start isEmpty. Operand 15347 states and 25190 transitions. [2024-12-02 07:13:32,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2024-12-02 07:13:32,553 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:13:32,553 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:13:32,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-12-02 07:13:32,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:13:32,754 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:13:32,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:13:32,754 INFO L85 PathProgramCache]: Analyzing trace with hash -2055575270, now seen corresponding path program 1 times [2024-12-02 07:13:32,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:13:32,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080608834] [2024-12-02 07:13:32,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:13:32,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:13:32,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:13:36,402 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-12-02 07:13:36,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:13:36,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080608834] [2024-12-02 07:13:36,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080608834] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:13:36,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:13:36,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 07:13:36,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378823392] [2024-12-02 07:13:36,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:13:36,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 07:13:36,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:13:36,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 07:13:36,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-12-02 07:13:36,404 INFO L87 Difference]: Start difference. First operand 15347 states and 25190 transitions. Second operand has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 12 states have internal predecessors, (106), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-12-02 07:14:02,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:14:02,964 INFO L93 Difference]: Finished difference Result 47139 states and 75821 transitions. [2024-12-02 07:14:02,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 07:14:02,965 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 12 states have internal predecessors, (106), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 548 [2024-12-02 07:14:02,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:14:03,031 INFO L225 Difference]: With dead ends: 47139 [2024-12-02 07:14:03,031 INFO L226 Difference]: Without dead ends: 33776 [2024-12-02 07:14:03,053 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2024-12-02 07:14:03,053 INFO L435 NwaCegarLoop]: 716 mSDtfsCounter, 2390 mSDsluCounter, 2605 mSDsCounter, 0 mSdLazyCounter, 1834 mSolverCounterSat, 1971 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2390 SdHoareTripleChecker+Valid, 3321 SdHoareTripleChecker+Invalid, 3805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1971 IncrementalHoareTripleChecker+Valid, 1834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:14:03,054 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2390 Valid, 3321 Invalid, 3805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1971 Valid, 1834 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-12-02 07:14:03,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33776 states. [2024-12-02 07:14:06,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33776 to 9914. [2024-12-02 07:14:06,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9914 states, 7691 states have (on average 1.6222857885840594) internal successors, (12477), 7726 states have internal predecessors, (12477), 2081 states have call successors, (2081), 141 states have call predecessors, (2081), 141 states have return successors, (2081), 2046 states have call predecessors, (2081), 2081 states have call successors, (2081) [2024-12-02 07:14:06,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9914 states to 9914 states and 16639 transitions. [2024-12-02 07:14:06,414 INFO L78 Accepts]: Start accepts. Automaton has 9914 states and 16639 transitions. Word has length 548 [2024-12-02 07:14:06,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:14:06,414 INFO L471 AbstractCegarLoop]: Abstraction has 9914 states and 16639 transitions. [2024-12-02 07:14:06,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 12 states have internal predecessors, (106), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-12-02 07:14:06,414 INFO L276 IsEmpty]: Start isEmpty. Operand 9914 states and 16639 transitions. [2024-12-02 07:14:06,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2024-12-02 07:14:06,418 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:14:06,419 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:14:06,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 07:14:06,419 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:14:06,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:14:06,419 INFO L85 PathProgramCache]: Analyzing trace with hash 146465647, now seen corresponding path program 1 times [2024-12-02 07:14:06,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:14:06,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881428229] [2024-12-02 07:14:06,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:14:06,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:14:06,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:14:06,783 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 129 proven. 135 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2024-12-02 07:14:06,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:14:06,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881428229] [2024-12-02 07:14:06,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881428229] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:14:06,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007520048] [2024-12-02 07:14:06,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:14:06,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:14:06,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:14:06,785 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:14:06,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 07:14:07,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:14:07,048 INFO L256 TraceCheckSpWp]: Trace formula consists of 1202 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-02 07:14:07,053 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:14:07,827 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 9751 proven. 183 refuted. 0 times theorem prover too weak. 5730 trivial. 0 not checked. [2024-12-02 07:14:07,828 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:14:08,695 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 339 proven. 186 refuted. 0 times theorem prover too weak. 15139 trivial. 0 not checked. [2024-12-02 07:14:08,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007520048] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:14:08,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:14:08,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 12] total 21 [2024-12-02 07:14:08,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636668621] [2024-12-02 07:14:08,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:14:08,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 07:14:08,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:14:08,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 07:14:08,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2024-12-02 07:14:08,698 INFO L87 Difference]: Start difference. First operand 9914 states and 16639 transitions. Second operand has 21 states, 21 states have (on average 10.333333333333334) internal successors, (217), 21 states have internal predecessors, (217), 5 states have call successors, (187), 3 states have call predecessors, (187), 7 states have return successors, (189), 5 states have call predecessors, (189), 5 states have call successors, (189) [2024-12-02 07:14:21,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:14:21,498 INFO L93 Difference]: Finished difference Result 27867 states and 44909 transitions. [2024-12-02 07:14:21,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-12-02 07:14:21,499 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 10.333333333333334) internal successors, (217), 21 states have internal predecessors, (217), 5 states have call successors, (187), 3 states have call predecessors, (187), 7 states have return successors, (189), 5 states have call predecessors, (189), 5 states have call successors, (189) Word has length 548 [2024-12-02 07:14:21,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:14:21,538 INFO L225 Difference]: With dead ends: 27867 [2024-12-02 07:14:21,538 INFO L226 Difference]: Without dead ends: 19710 [2024-12-02 07:14:21,550 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1169 GetRequests, 1087 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2131 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1336, Invalid=5470, Unknown=0, NotChecked=0, Total=6806 [2024-12-02 07:14:21,550 INFO L435 NwaCegarLoop]: 504 mSDtfsCounter, 2241 mSDsluCounter, 1857 mSDsCounter, 0 mSdLazyCounter, 2586 mSolverCounterSat, 2770 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2241 SdHoareTripleChecker+Valid, 2361 SdHoareTripleChecker+Invalid, 5356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2770 IncrementalHoareTripleChecker+Valid, 2586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:14:21,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2241 Valid, 2361 Invalid, 5356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2770 Valid, 2586 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-12-02 07:14:21,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19710 states. [2024-12-02 07:14:26,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19710 to 14175. [2024-12-02 07:14:26,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14175 states, 10192 states have (on average 1.5395408163265305) internal successors, (15691), 10261 states have internal predecessors, (15691), 3677 states have call successors, (3677), 305 states have call predecessors, (3677), 305 states have return successors, (3677), 3608 states have call predecessors, (3677), 3677 states have call successors, (3677) [2024-12-02 07:14:26,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14175 states to 14175 states and 23045 transitions. [2024-12-02 07:14:26,858 INFO L78 Accepts]: Start accepts. Automaton has 14175 states and 23045 transitions. Word has length 548 [2024-12-02 07:14:26,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:14:26,859 INFO L471 AbstractCegarLoop]: Abstraction has 14175 states and 23045 transitions. [2024-12-02 07:14:26,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.333333333333334) internal successors, (217), 21 states have internal predecessors, (217), 5 states have call successors, (187), 3 states have call predecessors, (187), 7 states have return successors, (189), 5 states have call predecessors, (189), 5 states have call successors, (189) [2024-12-02 07:14:26,859 INFO L276 IsEmpty]: Start isEmpty. Operand 14175 states and 23045 transitions. [2024-12-02 07:14:26,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2024-12-02 07:14:26,864 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:14:26,864 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:14:26,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 07:14:27,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:14:27,064 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:14:27,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:14:27,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1141336012, now seen corresponding path program 1 times [2024-12-02 07:14:27,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:14:27,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261643264] [2024-12-02 07:14:27,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:14:27,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:14:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:14:29,072 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 117 proven. 147 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2024-12-02 07:14:29,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:14:29,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261643264] [2024-12-02 07:14:29,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261643264] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:14:29,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230945029] [2024-12-02 07:14:29,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:14:29,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:14:29,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:14:29,074 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:14:29,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 07:14:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:14:29,342 INFO L256 TraceCheckSpWp]: Trace formula consists of 1199 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 07:14:29,347 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:14:31,749 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 7810 proven. 147 refuted. 0 times theorem prover too weak. 7707 trivial. 0 not checked. [2024-12-02 07:14:31,749 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:14:35,444 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 117 proven. 147 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2024-12-02 07:14:35,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230945029] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:14:35,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:14:35,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 11] total 27 [2024-12-02 07:14:35,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310612700] [2024-12-02 07:14:35,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:14:35,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-12-02 07:14:35,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:14:35,446 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-12-02 07:14:35,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=581, Unknown=0, NotChecked=0, Total=702 [2024-12-02 07:14:35,446 INFO L87 Difference]: Start difference. First operand 14175 states and 23045 transitions. Second operand has 27 states, 26 states have (on average 9.576923076923077) internal successors, (249), 27 states have internal predecessors, (249), 6 states have call successors, (267), 3 states have call predecessors, (267), 6 states have return successors, (267), 5 states have call predecessors, (267), 6 states have call successors, (267) [2024-12-02 07:14:53,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:14:53,697 INFO L93 Difference]: Finished difference Result 33773 states and 54991 transitions. [2024-12-02 07:14:53,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-12-02 07:14:53,698 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 9.576923076923077) internal successors, (249), 27 states have internal predecessors, (249), 6 states have call successors, (267), 3 states have call predecessors, (267), 6 states have return successors, (267), 5 states have call predecessors, (267), 6 states have call successors, (267) Word has length 548 [2024-12-02 07:14:53,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:14:53,741 INFO L225 Difference]: With dead ends: 33773 [2024-12-02 07:14:53,741 INFO L226 Difference]: Without dead ends: 21808 [2024-12-02 07:14:53,758 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1150 GetRequests, 1089 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 858 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1001, Invalid=2905, Unknown=0, NotChecked=0, Total=3906 [2024-12-02 07:14:53,758 INFO L435 NwaCegarLoop]: 480 mSDtfsCounter, 1950 mSDsluCounter, 4460 mSDsCounter, 0 mSdLazyCounter, 5639 mSolverCounterSat, 901 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2116 SdHoareTripleChecker+Valid, 4940 SdHoareTripleChecker+Invalid, 6540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 901 IncrementalHoareTripleChecker+Valid, 5639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2024-12-02 07:14:53,758 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2116 Valid, 4940 Invalid, 6540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [901 Valid, 5639 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2024-12-02 07:14:53,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21808 states. [2024-12-02 07:14:59,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21808 to 14577. [2024-12-02 07:14:59,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14577 states, 10594 states have (on average 1.5488956012837456) internal successors, (16409), 10663 states have internal predecessors, (16409), 3677 states have call successors, (3677), 305 states have call predecessors, (3677), 305 states have return successors, (3677), 3608 states have call predecessors, (3677), 3677 states have call successors, (3677) [2024-12-02 07:14:59,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14577 states to 14577 states and 23763 transitions. [2024-12-02 07:14:59,266 INFO L78 Accepts]: Start accepts. Automaton has 14577 states and 23763 transitions. Word has length 548 [2024-12-02 07:14:59,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:14:59,267 INFO L471 AbstractCegarLoop]: Abstraction has 14577 states and 23763 transitions. [2024-12-02 07:14:59,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 9.576923076923077) internal successors, (249), 27 states have internal predecessors, (249), 6 states have call successors, (267), 3 states have call predecessors, (267), 6 states have return successors, (267), 5 states have call predecessors, (267), 6 states have call successors, (267) [2024-12-02 07:14:59,267 INFO L276 IsEmpty]: Start isEmpty. Operand 14577 states and 23763 transitions. [2024-12-02 07:14:59,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2024-12-02 07:14:59,271 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:14:59,271 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:14:59,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 07:14:59,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-12-02 07:14:59,472 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:14:59,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:14:59,472 INFO L85 PathProgramCache]: Analyzing trace with hash -2104476529, now seen corresponding path program 1 times [2024-12-02 07:14:59,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:14:59,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139325270] [2024-12-02 07:14:59,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:14:59,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:14:59,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:15:00,513 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 276 proven. 246 refuted. 0 times theorem prover too weak. 15142 trivial. 0 not checked. [2024-12-02 07:15:00,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:15:00,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139325270] [2024-12-02 07:15:00,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139325270] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:15:00,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919143079] [2024-12-02 07:15:00,513 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:15:00,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:15:00,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:15:00,515 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:15:00,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 07:15:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:15:00,782 INFO L256 TraceCheckSpWp]: Trace formula consists of 1199 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 07:15:00,787 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:15:04,049 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 10276 proven. 285 refuted. 0 times theorem prover too weak. 5103 trivial. 0 not checked. [2024-12-02 07:15:04,049 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:15:06,218 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 489 proven. 294 refuted. 0 times theorem prover too weak. 14881 trivial. 0 not checked. [2024-12-02 07:15:06,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919143079] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:15:06,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:15:06,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 16] total 37 [2024-12-02 07:15:06,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862794031] [2024-12-02 07:15:06,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:15:06,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-12-02 07:15:06,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:15:06,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-12-02 07:15:06,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=1047, Unknown=0, NotChecked=0, Total=1332 [2024-12-02 07:15:06,220 INFO L87 Difference]: Start difference. First operand 14577 states and 23763 transitions. Second operand has 37 states, 35 states have (on average 8.114285714285714) internal successors, (284), 35 states have internal predecessors, (284), 13 states have call successors, (267), 6 states have call predecessors, (267), 11 states have return successors, (267), 11 states have call predecessors, (267), 13 states have call successors, (267) [2024-12-02 07:15:44,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:15:44,049 INFO L93 Difference]: Finished difference Result 43118 states and 70339 transitions. [2024-12-02 07:15:44,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2024-12-02 07:15:44,049 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 8.114285714285714) internal successors, (284), 35 states have internal predecessors, (284), 13 states have call successors, (267), 6 states have call predecessors, (267), 11 states have return successors, (267), 11 states have call predecessors, (267), 13 states have call successors, (267) Word has length 548 [2024-12-02 07:15:44,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:15:44,106 INFO L225 Difference]: With dead ends: 43118 [2024-12-02 07:15:44,106 INFO L226 Difference]: Without dead ends: 28608 [2024-12-02 07:15:44,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1269 GetRequests, 1102 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11277 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=6882, Invalid=21510, Unknown=0, NotChecked=0, Total=28392 [2024-12-02 07:15:44,126 INFO L435 NwaCegarLoop]: 564 mSDtfsCounter, 9885 mSDsluCounter, 9016 mSDsCounter, 0 mSdLazyCounter, 11451 mSolverCounterSat, 6354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9989 SdHoareTripleChecker+Valid, 9580 SdHoareTripleChecker+Invalid, 17805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6354 IncrementalHoareTripleChecker+Valid, 11451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2024-12-02 07:15:44,126 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9989 Valid, 9580 Invalid, 17805 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6354 Valid, 11451 Invalid, 0 Unknown, 0 Unchecked, 16.6s Time] [2024-12-02 07:15:44,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28608 states. [2024-12-02 07:15:49,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28608 to 10395. [2024-12-02 07:15:49,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10395 states, 7261 states have (on average 1.4989670844236331) internal successors, (10884), 7303 states have internal predecessors, (10884), 2848 states have call successors, (2848), 285 states have call predecessors, (2848), 285 states have return successors, (2848), 2806 states have call predecessors, (2848), 2848 states have call successors, (2848) [2024-12-02 07:15:49,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10395 states to 10395 states and 16580 transitions. [2024-12-02 07:15:49,208 INFO L78 Accepts]: Start accepts. Automaton has 10395 states and 16580 transitions. Word has length 548 [2024-12-02 07:15:49,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:15:49,208 INFO L471 AbstractCegarLoop]: Abstraction has 10395 states and 16580 transitions. [2024-12-02 07:15:49,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 8.114285714285714) internal successors, (284), 35 states have internal predecessors, (284), 13 states have call successors, (267), 6 states have call predecessors, (267), 11 states have return successors, (267), 11 states have call predecessors, (267), 13 states have call successors, (267) [2024-12-02 07:15:49,209 INFO L276 IsEmpty]: Start isEmpty. Operand 10395 states and 16580 transitions. [2024-12-02 07:15:49,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2024-12-02 07:15:49,213 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:15:49,213 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:15:49,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 07:15:49,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-12-02 07:15:49,413 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:15:49,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:15:49,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1321681288, now seen corresponding path program 1 times [2024-12-02 07:15:49,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:15:49,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857201518] [2024-12-02 07:15:49,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:15:49,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:15:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:15:49,580 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-12-02 07:15:49,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:15:49,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857201518] [2024-12-02 07:15:49,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857201518] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:15:49,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:15:49,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:15:49,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820503032] [2024-12-02 07:15:49,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:15:49,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:15:49,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:15:49,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:15:49,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:15:49,582 INFO L87 Difference]: Start difference. First operand 10395 states and 16580 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-12-02 07:15:54,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:15:54,315 INFO L93 Difference]: Finished difference Result 20723 states and 33060 transitions. [2024-12-02 07:15:54,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:15:54,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 548 [2024-12-02 07:15:54,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:15:54,342 INFO L225 Difference]: With dead ends: 20723 [2024-12-02 07:15:54,342 INFO L226 Difference]: Without dead ends: 10395 [2024-12-02 07:15:54,355 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:15:54,355 INFO L435 NwaCegarLoop]: 382 mSDtfsCounter, 0 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:15:54,355 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 736 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:15:54,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10395 states. [2024-12-02 07:15:59,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10395 to 10395. [2024-12-02 07:15:59,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10395 states, 7261 states have (on average 1.4944222558876188) internal successors, (10851), 7303 states have internal predecessors, (10851), 2848 states have call successors, (2848), 285 states have call predecessors, (2848), 285 states have return successors, (2848), 2806 states have call predecessors, (2848), 2848 states have call successors, (2848) [2024-12-02 07:15:59,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10395 states to 10395 states and 16547 transitions. [2024-12-02 07:15:59,126 INFO L78 Accepts]: Start accepts. Automaton has 10395 states and 16547 transitions. Word has length 548 [2024-12-02 07:15:59,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:15:59,127 INFO L471 AbstractCegarLoop]: Abstraction has 10395 states and 16547 transitions. [2024-12-02 07:15:59,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-12-02 07:15:59,127 INFO L276 IsEmpty]: Start isEmpty. Operand 10395 states and 16547 transitions. [2024-12-02 07:15:59,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2024-12-02 07:15:59,131 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:15:59,132 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:15:59,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 07:15:59,132 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:15:59,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:15:59,132 INFO L85 PathProgramCache]: Analyzing trace with hash -812208198, now seen corresponding path program 1 times [2024-12-02 07:15:59,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:15:59,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146579377] [2024-12-02 07:15:59,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:15:59,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:15:59,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:16:04,767 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 219 proven. 45 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2024-12-02 07:16:04,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:16:04,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146579377] [2024-12-02 07:16:04,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146579377] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:16:04,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173746856] [2024-12-02 07:16:04,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:16:04,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:16:04,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:16:04,769 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:16:04,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 07:16:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:16:05,042 INFO L256 TraceCheckSpWp]: Trace formula consists of 1201 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-12-02 07:16:05,051 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:16:08,931 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 9981 proven. 222 refuted. 0 times theorem prover too weak. 5461 trivial. 0 not checked. [2024-12-02 07:16:08,931 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:16:35,155 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 219 proven. 45 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2024-12-02 07:16:35,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173746856] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:16:35,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:16:35,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 15] total 45 [2024-12-02 07:16:35,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244338990] [2024-12-02 07:16:35,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:16:35,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-12-02 07:16:35,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:16:35,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-12-02 07:16:35,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=1705, Unknown=0, NotChecked=0, Total=1980 [2024-12-02 07:16:35,158 INFO L87 Difference]: Start difference. First operand 10395 states and 16547 transitions. Second operand has 45 states, 44 states have (on average 6.2727272727272725) internal successors, (276), 44 states have internal predecessors, (276), 12 states have call successors, (267), 5 states have call predecessors, (267), 10 states have return successors, (267), 11 states have call predecessors, (267), 12 states have call successors, (267) [2024-12-02 07:17:47,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:17:47,851 INFO L93 Difference]: Finished difference Result 45127 states and 72404 transitions. [2024-12-02 07:17:47,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2024-12-02 07:17:47,852 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 6.2727272727272725) internal successors, (276), 44 states have internal predecessors, (276), 12 states have call successors, (267), 5 states have call predecessors, (267), 10 states have return successors, (267), 11 states have call predecessors, (267), 12 states have call successors, (267) Word has length 548 [2024-12-02 07:17:47,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:17:47,923 INFO L225 Difference]: With dead ends: 45127 [2024-12-02 07:17:47,923 INFO L226 Difference]: Without dead ends: 34799 [2024-12-02 07:17:47,943 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1254 GetRequests, 1095 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8196 ImplicationChecksByTransitivity, 19.5s TimeCoverageRelationStatistics Valid=4916, Invalid=20844, Unknown=0, NotChecked=0, Total=25760 [2024-12-02 07:17:47,943 INFO L435 NwaCegarLoop]: 446 mSDtfsCounter, 5270 mSDsluCounter, 8428 mSDsCounter, 0 mSdLazyCounter, 12533 mSolverCounterSat, 3301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5466 SdHoareTripleChecker+Valid, 8874 SdHoareTripleChecker+Invalid, 15834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3301 IncrementalHoareTripleChecker+Valid, 12533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:17:47,943 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5466 Valid, 8874 Invalid, 15834 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3301 Valid, 12533 Invalid, 0 Unknown, 0 Unchecked, 30.3s Time] [2024-12-02 07:17:47,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34799 states. [2024-12-02 07:17:53,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34799 to 10619. [2024-12-02 07:17:53,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10619 states, 7481 states have (on average 1.498730116294613) internal successors, (11212), 7523 states have internal predecessors, (11212), 2848 states have call successors, (2848), 289 states have call predecessors, (2848), 289 states have return successors, (2848), 2806 states have call predecessors, (2848), 2848 states have call successors, (2848) [2024-12-02 07:17:53,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10619 states to 10619 states and 16908 transitions. [2024-12-02 07:17:53,864 INFO L78 Accepts]: Start accepts. Automaton has 10619 states and 16908 transitions. Word has length 548 [2024-12-02 07:17:53,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:17:53,864 INFO L471 AbstractCegarLoop]: Abstraction has 10619 states and 16908 transitions. [2024-12-02 07:17:53,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 6.2727272727272725) internal successors, (276), 44 states have internal predecessors, (276), 12 states have call successors, (267), 5 states have call predecessors, (267), 10 states have return successors, (267), 11 states have call predecessors, (267), 12 states have call successors, (267) [2024-12-02 07:17:53,865 INFO L276 IsEmpty]: Start isEmpty. Operand 10619 states and 16908 transitions. [2024-12-02 07:17:53,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2024-12-02 07:17:53,869 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:17:53,869 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:17:53,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-12-02 07:17:54,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-12-02 07:17:54,069 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:17:54,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:17:54,070 INFO L85 PathProgramCache]: Analyzing trace with hash -593353480, now seen corresponding path program 1 times [2024-12-02 07:17:54,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:17:54,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839282450] [2024-12-02 07:17:54,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:17:54,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:17:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:18:34,349 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 303 proven. 219 refuted. 0 times theorem prover too weak. 15142 trivial. 0 not checked. [2024-12-02 07:18:34,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:18:34,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839282450] [2024-12-02 07:18:34,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839282450] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:18:34,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845068502] [2024-12-02 07:18:34,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:18:34,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:18:34,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:18:34,352 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:18:34,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9da50762-3cda-403f-ae5d-6b287ed76cd2/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 07:18:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:18:34,642 INFO L256 TraceCheckSpWp]: Trace formula consists of 1201 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-12-02 07:18:34,648 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:18:42,129 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 10805 proven. 447 refuted. 0 times theorem prover too weak. 4412 trivial. 0 not checked. [2024-12-02 07:18:42,130 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:18:54,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845068502] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:18:54,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 07:18:54,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 24] total 41 [2024-12-02 07:18:54,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873305168] [2024-12-02 07:18:54,876 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 07:18:54,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-12-02 07:18:54,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:18:54,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-12-02 07:18:54,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=2333, Unknown=0, NotChecked=0, Total=2652 [2024-12-02 07:18:54,877 INFO L87 Difference]: Start difference. First operand 10619 states and 16908 transitions. Second operand has 41 states, 40 states have (on average 4.8) internal successors, (192), 39 states have internal predecessors, (192), 10 states have call successors, (178), 8 states have call predecessors, (178), 11 states have return successors, (178), 8 states have call predecessors, (178), 10 states have call successors, (178)