./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-92.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_95301baa-0b5c-446d-8056-03d9f3b2664c/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95301baa-0b5c-446d-8056-03d9f3b2664c/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_95301baa-0b5c-446d-8056-03d9f3b2664c/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95301baa-0b5c-446d-8056-03d9f3b2664c/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-92.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95301baa-0b5c-446d-8056-03d9f3b2664c/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_95301baa-0b5c-446d-8056-03d9f3b2664c/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 34a7e7e1117c68f092f781b8dcc8b7b6859e863c3fe77a01a5acd93b0a231d14 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 14:23:11,560 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 14:23:11,618 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95301baa-0b5c-446d-8056-03d9f3b2664c/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 14:23:11,624 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 14:23:11,624 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 14:23:11,647 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 14:23:11,647 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 14:23:11,648 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 14:23:11,648 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 14:23:11,648 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 14:23:11,648 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 14:23:11,648 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 14:23:11,649 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 14:23:11,649 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 14:23:11,649 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 14:23:11,649 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 14:23:11,649 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 14:23:11,649 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 14:23:11,649 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 14:23:11,649 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 14:23:11,649 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 14:23:11,650 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 14:23:11,650 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 14:23:11,650 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 14:23:11,650 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 14:23:11,650 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 14:23:11,650 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 14:23:11,650 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 14:23:11,650 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 14:23:11,650 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:23:11,650 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:23:11,650 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:23:11,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:23:11,651 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 14:23:11,651 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:23:11,651 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:23:11,651 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:23:11,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:23:11,651 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 14:23:11,651 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 14:23:11,651 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 14:23:11,651 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 14:23:11,651 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 14:23:11,652 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 14:23:11,652 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 14:23:11,652 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 14:23:11,652 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 14:23:11,652 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 14:23:11,652 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_95301baa-0b5c-446d-8056-03d9f3b2664c/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 -> 34a7e7e1117c68f092f781b8dcc8b7b6859e863c3fe77a01a5acd93b0a231d14 [2024-12-02 14:23:11,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 14:23:11,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 14:23:11,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 14:23:11,919 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 14:23:11,919 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 14:23:11,920 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95301baa-0b5c-446d-8056-03d9f3b2664c/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-92.i [2024-12-02 14:23:14,581 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95301baa-0b5c-446d-8056-03d9f3b2664c/bin/uautomizer-verify-84ZbGMXZE1/data/19344ea93/d75b315914184862b2aa683900192161/FLAGe241437b8 [2024-12-02 14:23:14,799 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 14:23:14,800 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95301baa-0b5c-446d-8056-03d9f3b2664c/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-92.i [2024-12-02 14:23:14,807 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95301baa-0b5c-446d-8056-03d9f3b2664c/bin/uautomizer-verify-84ZbGMXZE1/data/19344ea93/d75b315914184862b2aa683900192161/FLAGe241437b8 [2024-12-02 14:23:15,149 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95301baa-0b5c-446d-8056-03d9f3b2664c/bin/uautomizer-verify-84ZbGMXZE1/data/19344ea93/d75b315914184862b2aa683900192161 [2024-12-02 14:23:15,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 14:23:15,151 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 14:23:15,153 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 14:23:15,153 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 14:23:15,157 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 14:23:15,158 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:23:15" (1/1) ... [2024-12-02 14:23:15,158 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@295db75e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:23:15, skipping insertion in model container [2024-12-02 14:23:15,159 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:23:15" (1/1) ... [2024-12-02 14:23:15,177 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 14:23:15,327 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_95301baa-0b5c-446d-8056-03d9f3b2664c/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-92.i[917,930] [2024-12-02 14:23:15,388 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:23:15,400 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 14:23:15,411 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_95301baa-0b5c-446d-8056-03d9f3b2664c/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-92.i[917,930] [2024-12-02 14:23:15,442 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:23:15,461 INFO L204 MainTranslator]: Completed translation [2024-12-02 14:23:15,462 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:23:15 WrapperNode [2024-12-02 14:23:15,462 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 14:23:15,462 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 14:23:15,463 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 14:23:15,463 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 14:23:15,467 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:23:15" (1/1) ... [2024-12-02 14:23:15,476 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:23:15" (1/1) ... [2024-12-02 14:23:15,506 INFO L138 Inliner]: procedures = 30, calls = 154, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 464 [2024-12-02 14:23:15,506 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 14:23:15,507 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 14:23:15,507 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 14:23:15,507 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 14:23:15,517 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:23:15" (1/1) ... [2024-12-02 14:23:15,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:23:15" (1/1) ... [2024-12-02 14:23:15,522 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:23:15" (1/1) ... [2024-12-02 14:23:15,529 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2024-12-02 14:23:15,529 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:23:15" (1/1) ... [2024-12-02 14:23:15,529 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:23:15" (1/1) ... [2024-12-02 14:23:15,545 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:23:15" (1/1) ... [2024-12-02 14:23:15,547 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:23:15" (1/1) ... [2024-12-02 14:23:15,552 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:23:15" (1/1) ... [2024-12-02 14:23:15,555 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:23:15" (1/1) ... [2024-12-02 14:23:15,557 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:23:15" (1/1) ... [2024-12-02 14:23:15,562 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 14:23:15,563 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 14:23:15,563 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 14:23:15,563 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 14:23:15,564 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:23:15" (1/1) ... [2024-12-02 14:23:15,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:23:15,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95301baa-0b5c-446d-8056-03d9f3b2664c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:23:15,596 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95301baa-0b5c-446d-8056-03d9f3b2664c/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 14:23:15,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95301baa-0b5c-446d-8056-03d9f3b2664c/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 14:23:15,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 14:23:15,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2024-12-02 14:23:15,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-12-02 14:23:15,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2024-12-02 14:23:15,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-12-02 14:23:15,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2024-12-02 14:23:15,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-12-02 14:23:15,626 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 14:23:15,626 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 14:23:15,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-12-02 14:23:15,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 14:23:15,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 14:23:15,733 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 14:23:15,735 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 14:23:16,407 INFO L? ?]: Removed 116 outVars from TransFormulas that were not future-live. [2024-12-02 14:23:16,408 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 14:23:16,417 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 14:23:16,418 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 14:23:16,418 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:23:16 BoogieIcfgContainer [2024-12-02 14:23:16,418 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 14:23:16,420 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 14:23:16,420 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 14:23:16,424 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 14:23:16,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:23:15" (1/3) ... [2024-12-02 14:23:16,425 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da83820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:23:16, skipping insertion in model container [2024-12-02 14:23:16,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:23:15" (2/3) ... [2024-12-02 14:23:16,426 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da83820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:23:16, skipping insertion in model container [2024-12-02 14:23:16,426 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:23:16" (3/3) ... [2024-12-02 14:23:16,427 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-92.i [2024-12-02 14:23:16,440 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 14:23:16,441 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-sp_file-92.i that has 2 procedures, 113 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 14:23:16,488 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 14:23:16,498 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;@5d90b85c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 14:23:16,498 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 14:23:16,502 INFO L276 IsEmpty]: Start isEmpty. Operand has 113 states, 91 states have (on average 1.3736263736263736) internal successors, (125), 92 states have internal predecessors, (125), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-12-02 14:23:16,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 14:23:16,512 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:23:16,512 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:23:16,513 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:23:16,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:23:16,517 INFO L85 PathProgramCache]: Analyzing trace with hash 744802952, now seen corresponding path program 1 times [2024-12-02 14:23:16,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:23:16,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347510534] [2024-12-02 14:23:16,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:23:16,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:23:16,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:23:16,860 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2024-12-02 14:23:16,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:23:16,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347510534] [2024-12-02 14:23:16,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347510534] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:23:16,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445443528] [2024-12-02 14:23:16,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:23:16,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:23:16,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95301baa-0b5c-446d-8056-03d9f3b2664c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:23:16,863 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95301baa-0b5c-446d-8056-03d9f3b2664c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:23:16,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95301baa-0b5c-446d-8056-03d9f3b2664c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 14:23:17,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:23:17,156 INFO L256 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 14:23:17,163 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:23:17,185 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2024-12-02 14:23:17,185 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:23:17,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445443528] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:23:17,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:23:17,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 14:23:17,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278040039] [2024-12-02 14:23:17,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:23:17,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 14:23:17,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:23:17,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 14:23:17,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 14:23:17,210 INFO L87 Difference]: Start difference. First operand has 113 states, 91 states have (on average 1.3736263736263736) internal successors, (125), 92 states have internal predecessors, (125), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 14:23:17,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:23:17,239 INFO L93 Difference]: Finished difference Result 219 states and 339 transitions. [2024-12-02 14:23:17,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 14:23:17,240 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 153 [2024-12-02 14:23:17,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:23:17,246 INFO L225 Difference]: With dead ends: 219 [2024-12-02 14:23:17,246 INFO L226 Difference]: Without dead ends: 109 [2024-12-02 14:23:17,249 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 154 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 14:23:17,251 INFO L435 NwaCegarLoop]: 156 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, 156 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 14:23:17,252 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:23:17,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-12-02 14:23:17,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-12-02 14:23:17,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 88 states have (on average 1.3409090909090908) internal successors, (118), 88 states have internal predecessors, (118), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-12-02 14:23:17,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 156 transitions. [2024-12-02 14:23:17,287 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 156 transitions. Word has length 153 [2024-12-02 14:23:17,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:23:17,288 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 156 transitions. [2024-12-02 14:23:17,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 14:23:17,288 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 156 transitions. [2024-12-02 14:23:17,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 14:23:17,291 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:23:17,291 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:23:17,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95301baa-0b5c-446d-8056-03d9f3b2664c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 14:23:17,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95301baa-0b5c-446d-8056-03d9f3b2664c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 14:23:17,492 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:23:17,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:23:17,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1760842982, now seen corresponding path program 1 times [2024-12-02 14:23:17,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:23:17,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702563206] [2024-12-02 14:23:17,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:23:17,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:23:17,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:23:17,911 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-12-02 14:23:17,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:23:17,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702563206] [2024-12-02 14:23:17,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702563206] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:23:17,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:23:17,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:23:17,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26431389] [2024-12-02 14:23:17,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:23:17,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:23:17,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:23:17,914 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:23:17,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:23:17,914 INFO L87 Difference]: Start difference. First operand 109 states and 156 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-12-02 14:23:17,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:23:17,963 INFO L93 Difference]: Finished difference Result 218 states and 313 transitions. [2024-12-02 14:23:17,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:23:17,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 153 [2024-12-02 14:23:17,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:23:17,966 INFO L225 Difference]: With dead ends: 218 [2024-12-02 14:23:17,967 INFO L226 Difference]: Without dead ends: 112 [2024-12-02 14:23:17,967 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:23:17,968 INFO L435 NwaCegarLoop]: 153 mSDtfsCounter, 1 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:23:17,968 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 450 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:23:17,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-12-02 14:23:17,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2024-12-02 14:23:17,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 90 states have (on average 1.3333333333333333) internal successors, (120), 90 states have internal predecessors, (120), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-12-02 14:23:17,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 158 transitions. [2024-12-02 14:23:17,982 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 158 transitions. Word has length 153 [2024-12-02 14:23:17,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:23:17,983 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 158 transitions. [2024-12-02 14:23:17,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-12-02 14:23:17,984 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 158 transitions. [2024-12-02 14:23:17,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 14:23:17,986 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:23:17,986 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:23:17,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 14:23:17,987 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:23:17,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:23:17,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1762690024, now seen corresponding path program 1 times [2024-12-02 14:23:17,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:23:17,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824433743] [2024-12-02 14:23:17,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:23:17,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:23:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:23:21,782 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2024-12-02 14:23:21,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:23:21,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824433743] [2024-12-02 14:23:21,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824433743] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:23:21,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772324520] [2024-12-02 14:23:21,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:23:21,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:23:21,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95301baa-0b5c-446d-8056-03d9f3b2664c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:23:21,785 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95301baa-0b5c-446d-8056-03d9f3b2664c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:23:21,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95301baa-0b5c-446d-8056-03d9f3b2664c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 14:23:22,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:23:22,070 INFO L256 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-12-02 14:23:22,082 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:23:22,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-02 14:23:22,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-12-02 14:23:23,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-12-02 14:23:23,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-12-02 14:23:23,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-12-02 14:23:24,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-12-02 14:23:24,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-12-02 14:23:24,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-12-02 14:23:24,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-12-02 14:23:25,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-12-02 14:23:25,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 14:23:25,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-12-02 14:23:25,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 14:23:25,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-12-02 14:23:25,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-12-02 14:23:25,322 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 16 proven. 184 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-12-02 14:23:25,323 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:23:25,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772324520] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:23:25,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 14:23:25,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2024-12-02 14:23:25,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866513852] [2024-12-02 14:23:25,521 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 14:23:25,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 14:23:25,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:23:25,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 14:23:25,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2024-12-02 14:23:25,523 INFO L87 Difference]: Start difference. First operand 111 states and 158 transitions. Second operand has 19 states, 17 states have (on average 6.470588235294118) internal successors, (110), 19 states have internal predecessors, (110), 7 states have call successors, (38), 4 states have call predecessors, (38), 5 states have return successors, (38), 5 states have call predecessors, (38), 7 states have call successors, (38) [2024-12-02 14:23:26,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:23:26,300 INFO L93 Difference]: Finished difference Result 227 states and 320 transitions. [2024-12-02 14:23:26,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 14:23:26,301 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 6.470588235294118) internal successors, (110), 19 states have internal predecessors, (110), 7 states have call successors, (38), 4 states have call predecessors, (38), 5 states have return successors, (38), 5 states have call predecessors, (38), 7 states have call successors, (38) Word has length 153 [2024-12-02 14:23:26,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:23:26,306 INFO L225 Difference]: With dead ends: 227 [2024-12-02 14:23:26,307 INFO L226 Difference]: Without dead ends: 119 [2024-12-02 14:23:26,308 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 181 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2024-12-02 14:23:26,308 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 115 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 14:23:26,309 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 580 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 14:23:26,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-12-02 14:23:26,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 115. [2024-12-02 14:23:26,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 93 states have (on average 1.3118279569892473) internal successors, (122), 93 states have internal predecessors, (122), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-12-02 14:23:26,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 160 transitions. [2024-12-02 14:23:26,326 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 160 transitions. Word has length 153 [2024-12-02 14:23:26,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:23:26,327 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 160 transitions. [2024-12-02 14:23:26,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 6.470588235294118) internal successors, (110), 19 states have internal predecessors, (110), 7 states have call successors, (38), 4 states have call predecessors, (38), 5 states have return successors, (38), 5 states have call predecessors, (38), 7 states have call successors, (38) [2024-12-02 14:23:26,327 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 160 transitions. [2024-12-02 14:23:26,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 14:23:26,329 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:23:26,329 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:23:26,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95301baa-0b5c-446d-8056-03d9f3b2664c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 14:23:26,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95301baa-0b5c-446d-8056-03d9f3b2664c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:23:26,530 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:23:26,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:23:26,530 INFO L85 PathProgramCache]: Analyzing trace with hash -2109575446, now seen corresponding path program 1 times [2024-12-02 14:23:26,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:23:26,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811968292] [2024-12-02 14:23:26,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:23:26,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:23:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:24:07,218 WARN L286 SmtUtils]: Spent 9.18s on a formula simplification that was a NOOP. DAG size: 723 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 14:24:31,724 WARN L286 SmtUtils]: Spent 8.56s on a formula simplification that was a NOOP. DAG size: 708 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 14:24:55,011 WARN L286 SmtUtils]: Spent 8.29s on a formula simplification that was a NOOP. DAG size: 709 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 14:25:17,312 WARN L286 SmtUtils]: Spent 8.60s on a formula simplification that was a NOOP. DAG size: 706 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 14:31:47,143 WARN L286 SmtUtils]: Spent 12.17s on a formula simplification that was a NOOP. DAG size: 698 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 14:32:18,328 WARN L286 SmtUtils]: Spent 7.45s on a formula simplification that was a NOOP. DAG size: 671 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 14:32:30,970 WARN L286 SmtUtils]: Spent 5.54s on a formula simplification that was a NOOP. DAG size: 664 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 14:32:31,386 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-12-02 14:32:31,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:32:31,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811968292] [2024-12-02 14:32:31,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811968292] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:32:31,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:32:31,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-12-02 14:32:31,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070950562] [2024-12-02 14:32:31,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:32:31,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 14:32:31,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:32:31,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 14:32:31,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2024-12-02 14:32:31,389 INFO L87 Difference]: Start difference. First operand 115 states and 160 transitions. Second operand has 19 states, 17 states have (on average 3.588235294117647) internal successors, (61), 19 states have internal predecessors, (61), 5 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 5 states have call successors, (19) [2024-12-02 14:32:49,476 WARN L286 SmtUtils]: Spent 8.60s on a formula simplification. DAG size of input: 763 DAG size of output: 733 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 14:33:31,746 WARN L286 SmtUtils]: Spent 39.83s on a formula simplification. DAG size of input: 1173 DAG size of output: 1139 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 14:33:58,369 WARN L286 SmtUtils]: Spent 23.34s on a formula simplification. DAG size of input: 1169 DAG size of output: 729 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 14:34:03,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:34:08,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:34:43,953 WARN L286 SmtUtils]: Spent 22.38s on a formula simplification. DAG size of input: 1580 DAG size of output: 728 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 14:34:48,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:34:52,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:34:56,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:35:00,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:35:04,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:35:09,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:36:11,554 WARN L286 SmtUtils]: Spent 44.66s on a formula simplification. DAG size of input: 1981 DAG size of output: 1131 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 14:36:48,660 WARN L286 SmtUtils]: Spent 26.94s on a formula simplification. DAG size of input: 1184 DAG size of output: 744 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 14:37:26,623 WARN L286 SmtUtils]: Spent 26.34s on a formula simplification. DAG size of input: 1170 DAG size of output: 730 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 14:37:29,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:37:29,443 INFO L93 Difference]: Finished difference Result 283 states and 395 transitions. [2024-12-02 14:37:29,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 14:37:29,447 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.588235294117647) internal successors, (61), 19 states have internal predecessors, (61), 5 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 5 states have call successors, (19) Word has length 153 [2024-12-02 14:37:29,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:37:29,448 INFO L225 Difference]: With dead ends: 283 [2024-12-02 14:37:29,448 INFO L226 Difference]: Without dead ends: 171 [2024-12-02 14:37:29,449 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 314.5s TimeCoverageRelationStatistics Valid=175, Invalid=688, Unknown=7, NotChecked=0, Total=870 [2024-12-02 14:37:29,450 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 719 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 77 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.6s IncrementalHoareTripleChecker+Time [2024-12-02 14:37:29,451 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 767 Invalid, 1201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1116 Invalid, 8 Unknown, 0 Unchecked, 49.6s Time] [2024-12-02 14:37:29,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-12-02 14:37:29,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 133. [2024-12-02 14:37:29,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 111 states have (on average 1.3243243243243243) internal successors, (147), 111 states have internal predecessors, (147), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-12-02 14:37:29,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 185 transitions. [2024-12-02 14:37:29,479 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 185 transitions. Word has length 153 [2024-12-02 14:37:29,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:37:29,479 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 185 transitions. [2024-12-02 14:37:29,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.588235294117647) internal successors, (61), 19 states have internal predecessors, (61), 5 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 5 states have call successors, (19) [2024-12-02 14:37:29,480 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 185 transitions. [2024-12-02 14:37:29,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 14:37:29,481 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:37:29,482 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:37:29,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 14:37:29,482 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:37:29,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:37:29,483 INFO L85 PathProgramCache]: Analyzing trace with hash 905528172, now seen corresponding path program 1 times [2024-12-02 14:37:29,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:37:29,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054843116] [2024-12-02 14:37:29,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:29,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:29,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:36,376 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-12-02 14:37:36,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:37:36,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054843116] [2024-12-02 14:37:36,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054843116] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:37:36,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:37:36,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 14:37:36,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858296140] [2024-12-02 14:37:36,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:37:36,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 14:37:36,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:37:36,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 14:37:36,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-12-02 14:37:36,379 INFO L87 Difference]: Start difference. First operand 133 states and 185 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 14:37:39,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:37:39,382 INFO L93 Difference]: Finished difference Result 315 states and 434 transitions. [2024-12-02 14:37:39,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:37:39,383 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 153 [2024-12-02 14:37:39,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:37:39,384 INFO L225 Difference]: With dead ends: 315 [2024-12-02 14:37:39,384 INFO L226 Difference]: Without dead ends: 185 [2024-12-02 14:37:39,385 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-12-02 14:37:39,386 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 463 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:37:39,386 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 490 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-12-02 14:37:39,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-12-02 14:37:39,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 180. [2024-12-02 14:37:39,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 152 states have (on average 1.3157894736842106) internal successors, (200), 153 states have internal predecessors, (200), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2024-12-02 14:37:39,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 246 transitions. [2024-12-02 14:37:39,454 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 246 transitions. Word has length 153 [2024-12-02 14:37:39,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:37:39,455 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 246 transitions. [2024-12-02 14:37:39,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 14:37:39,455 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 246 transitions. [2024-12-02 14:37:39,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 14:37:39,457 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:37:39,458 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:37:39,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 14:37:39,458 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:37:39,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:37:39,459 INFO L85 PathProgramCache]: Analyzing trace with hash -186347412, now seen corresponding path program 1 times [2024-12-02 14:37:39,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:37:39,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818382619] [2024-12-02 14:37:39,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:39,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:39,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:45,366 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-12-02 14:37:45,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:37:45,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818382619] [2024-12-02 14:37:45,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818382619] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:37:45,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:37:45,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 14:37:45,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277344671] [2024-12-02 14:37:45,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:37:45,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 14:37:45,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:37:45,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 14:37:45,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-12-02 14:37:45,369 INFO L87 Difference]: Start difference. First operand 180 states and 246 transitions. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 14:37:47,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:37:47,755 INFO L93 Difference]: Finished difference Result 397 states and 544 transitions. [2024-12-02 14:37:47,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 14:37:47,756 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 153 [2024-12-02 14:37:47,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:37:47,760 INFO L225 Difference]: With dead ends: 397 [2024-12-02 14:37:47,760 INFO L226 Difference]: Without dead ends: 220 [2024-12-02 14:37:47,760 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-12-02 14:37:47,761 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 272 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-12-02 14:37:47,761 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 455 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-12-02 14:37:47,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-12-02 14:37:47,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 182. [2024-12-02 14:37:47,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 154 states have (on average 1.3116883116883118) internal successors, (202), 155 states have internal predecessors, (202), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2024-12-02 14:37:47,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 248 transitions. [2024-12-02 14:37:47,830 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 248 transitions. Word has length 153 [2024-12-02 14:37:47,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:37:47,830 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 248 transitions. [2024-12-02 14:37:47,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 14:37:47,830 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 248 transitions. [2024-12-02 14:37:47,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 14:37:47,832 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:37:47,832 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:37:47,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 14:37:47,832 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:37:47,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:37:47,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1466211090, now seen corresponding path program 1 times [2024-12-02 14:37:47,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:37:47,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364593287] [2024-12-02 14:37:47,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:47,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:48,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat