./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-26.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_dcd2e2a9-cef0-4bdd-b097-3a082cf0d32a/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd2e2a9-cef0-4bdd-b097-3a082cf0d32a/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_dcd2e2a9-cef0-4bdd-b097-3a082cf0d32a/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd2e2a9-cef0-4bdd-b097-3a082cf0d32a/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-26.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd2e2a9-cef0-4bdd-b097-3a082cf0d32a/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_dcd2e2a9-cef0-4bdd-b097-3a082cf0d32a/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 3a05c4cd155494b334138871edc7853c0d0fcd1ccd2ec892619f7fa2811e9969 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 14:01:06,554 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 14:01:06,607 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd2e2a9-cef0-4bdd-b097-3a082cf0d32a/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 14:01:06,611 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 14:01:06,611 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 14:01:06,631 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 14:01:06,632 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 14:01:06,632 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 14:01:06,632 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 14:01:06,632 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 14:01:06,632 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 14:01:06,632 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 14:01:06,633 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 14:01:06,633 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 14:01:06,633 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 14:01:06,633 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 14:01:06,633 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 14:01:06,633 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 14:01:06,633 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 14:01:06,633 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 14:01:06,633 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 14:01:06,634 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 14:01:06,634 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 14:01:06,634 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 14:01:06,634 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 14:01:06,634 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 14:01:06,634 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 14:01:06,634 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 14:01:06,634 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 14:01:06,634 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:01:06,634 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:01:06,634 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:01:06,634 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:01:06,634 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 14:01:06,635 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:01:06,635 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:01:06,635 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:01:06,635 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:01:06,635 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 14:01:06,635 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 14:01:06,635 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 14:01:06,635 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 14:01:06,635 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 14:01:06,635 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 14:01:06,635 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 14:01:06,635 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 14:01:06,635 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 14:01:06,636 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 14:01:06,636 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_dcd2e2a9-cef0-4bdd-b097-3a082cf0d32a/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 -> 3a05c4cd155494b334138871edc7853c0d0fcd1ccd2ec892619f7fa2811e9969 [2024-12-02 14:01:06,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 14:01:06,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 14:01:06,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 14:01:06,874 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 14:01:06,874 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 14:01:06,875 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd2e2a9-cef0-4bdd-b097-3a082cf0d32a/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-26.i [2024-12-02 14:01:09,520 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd2e2a9-cef0-4bdd-b097-3a082cf0d32a/bin/uautomizer-verify-84ZbGMXZE1/data/d47483db8/07eedd0f58584535878798d83fa2739e/FLAG0733c9557 [2024-12-02 14:01:09,745 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 14:01:09,746 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd2e2a9-cef0-4bdd-b097-3a082cf0d32a/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-26.i [2024-12-02 14:01:09,752 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd2e2a9-cef0-4bdd-b097-3a082cf0d32a/bin/uautomizer-verify-84ZbGMXZE1/data/d47483db8/07eedd0f58584535878798d83fa2739e/FLAG0733c9557 [2024-12-02 14:01:10,106 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd2e2a9-cef0-4bdd-b097-3a082cf0d32a/bin/uautomizer-verify-84ZbGMXZE1/data/d47483db8/07eedd0f58584535878798d83fa2739e [2024-12-02 14:01:10,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 14:01:10,109 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 14:01:10,109 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 14:01:10,110 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 14:01:10,113 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 14:01:10,113 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:01:10" (1/1) ... [2024-12-02 14:01:10,114 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4db255d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:01:10, skipping insertion in model container [2024-12-02 14:01:10,114 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:01:10" (1/1) ... [2024-12-02 14:01:10,130 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 14:01:10,256 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_dcd2e2a9-cef0-4bdd-b097-3a082cf0d32a/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-26.i[916,929] [2024-12-02 14:01:10,331 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:01:10,340 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 14:01:10,348 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_dcd2e2a9-cef0-4bdd-b097-3a082cf0d32a/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-26.i[916,929] [2024-12-02 14:01:10,381 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:01:10,397 INFO L204 MainTranslator]: Completed translation [2024-12-02 14:01:10,398 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:01:10 WrapperNode [2024-12-02 14:01:10,398 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 14:01:10,399 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 14:01:10,399 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 14:01:10,399 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 14:01:10,405 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:01:10" (1/1) ... [2024-12-02 14:01:10,416 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:01:10" (1/1) ... [2024-12-02 14:01:10,452 INFO L138 Inliner]: procedures = 26, calls = 43, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 240 [2024-12-02 14:01:10,453 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 14:01:10,453 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 14:01:10,453 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 14:01:10,453 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 14:01:10,462 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:01:10" (1/1) ... [2024-12-02 14:01:10,462 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:01:10" (1/1) ... [2024-12-02 14:01:10,465 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:01:10" (1/1) ... [2024-12-02 14:01:10,485 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 14:01:10,485 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:01:10" (1/1) ... [2024-12-02 14:01:10,485 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:01:10" (1/1) ... [2024-12-02 14:01:10,496 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:01:10" (1/1) ... [2024-12-02 14:01:10,499 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:01:10" (1/1) ... [2024-12-02 14:01:10,503 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:01:10" (1/1) ... [2024-12-02 14:01:10,507 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:01:10" (1/1) ... [2024-12-02 14:01:10,509 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:01:10" (1/1) ... [2024-12-02 14:01:10,515 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 14:01:10,516 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 14:01:10,516 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 14:01:10,516 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 14:01:10,517 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:01:10" (1/1) ... [2024-12-02 14:01:10,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:01:10,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd2e2a9-cef0-4bdd-b097-3a082cf0d32a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:01:10,548 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd2e2a9-cef0-4bdd-b097-3a082cf0d32a/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 14:01:10,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd2e2a9-cef0-4bdd-b097-3a082cf0d32a/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 14:01:10,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 14:01:10,574 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 14:01:10,574 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 14:01:10,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 14:01:10,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 14:01:10,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 14:01:10,653 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 14:01:10,655 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 14:01:11,083 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2024-12-02 14:01:11,083 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 14:01:11,093 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 14:01:11,093 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-02 14:01:11,093 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:01:11 BoogieIcfgContainer [2024-12-02 14:01:11,093 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 14:01:11,095 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 14:01:11,095 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 14:01:11,101 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 14:01:11,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:01:10" (1/3) ... [2024-12-02 14:01:11,102 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a8ea94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:01:11, skipping insertion in model container [2024-12-02 14:01:11,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:01:10" (2/3) ... [2024-12-02 14:01:11,102 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a8ea94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:01:11, skipping insertion in model container [2024-12-02 14:01:11,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:01:11" (3/3) ... [2024-12-02 14:01:11,103 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-1loop_file-26.i [2024-12-02 14:01:11,118 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 14:01:11,121 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_100-1loop_file-26.i that has 2 procedures, 103 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 14:01:11,176 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 14:01:11,188 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;@1742f22e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 14:01:11,188 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 14:01:11,191 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 70 states have (on average 1.4285714285714286) internal successors, (100), 71 states have internal predecessors, (100), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-12-02 14:01:11,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-12-02 14:01:11,204 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:01:11,205 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:11,205 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:01:11,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:01:11,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1511895422, now seen corresponding path program 1 times [2024-12-02 14:01:11,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:01:11,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141062060] [2024-12-02 14:01:11,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:01:11,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:01:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:01:11,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2024-12-02 14:01:11,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:01:11,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141062060] [2024-12-02 14:01:11,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141062060] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:01:11,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954486763] [2024-12-02 14:01:11,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:01:11,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:01:11,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd2e2a9-cef0-4bdd-b097-3a082cf0d32a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:01:11,526 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd2e2a9-cef0-4bdd-b097-3a082cf0d32a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:01:11,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd2e2a9-cef0-4bdd-b097-3a082cf0d32a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 14:01:11,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:01:11,706 INFO L256 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 14:01:11,715 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:01:11,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2024-12-02 14:01:11,760 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:01:11,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954486763] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:01:11,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:01:11,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 14:01:11,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950759226] [2024-12-02 14:01:11,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:01:11,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 14:01:11,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:01:11,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 14:01:11,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 14:01:11,784 INFO L87 Difference]: Start difference. First operand has 103 states, 70 states have (on average 1.4285714285714286) internal successors, (100), 71 states have internal predecessors, (100), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 2 states have call successors, (30) [2024-12-02 14:01:11,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:01:11,812 INFO L93 Difference]: Finished difference Result 203 states and 347 transitions. [2024-12-02 14:01:11,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 14:01:11,813 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 2 states have call successors, (30) Word has length 198 [2024-12-02 14:01:11,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:01:11,820 INFO L225 Difference]: With dead ends: 203 [2024-12-02 14:01:11,821 INFO L226 Difference]: Without dead ends: 99 [2024-12-02 14:01:11,824 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 199 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 14:01:11,827 INFO L435 NwaCegarLoop]: 157 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, 157 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 14:01:11,828 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:01:11,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-12-02 14:01:11,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-12-02 14:01:11,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 67 states have (on average 1.3880597014925373) internal successors, (93), 67 states have internal predecessors, (93), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-12-02 14:01:11,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 153 transitions. [2024-12-02 14:01:11,871 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 153 transitions. Word has length 198 [2024-12-02 14:01:11,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:01:11,871 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 153 transitions. [2024-12-02 14:01:11,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 2 states have call successors, (30) [2024-12-02 14:01:11,872 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 153 transitions. [2024-12-02 14:01:11,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-12-02 14:01:11,875 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:01:11,875 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:11,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd2e2a9-cef0-4bdd-b097-3a082cf0d32a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 14:01:12,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd2e2a9-cef0-4bdd-b097-3a082cf0d32a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 14:01:12,076 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:01:12,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:01:12,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1891919738, now seen corresponding path program 1 times [2024-12-02 14:01:12,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:01:12,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503509103] [2024-12-02 14:01:12,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:01:12,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:01:12,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:01:12,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-12-02 14:01:12,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:01:12,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503509103] [2024-12-02 14:01:12,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503509103] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:01:12,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:01:12,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:01:12,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180657355] [2024-12-02 14:01:12,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:01:12,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:01:12,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:01:12,518 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:01:12,518 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:01:12,519 INFO L87 Difference]: Start difference. First operand 99 states and 153 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2024-12-02 14:01:12,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:01:12,575 INFO L93 Difference]: Finished difference Result 291 states and 453 transitions. [2024-12-02 14:01:12,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:01:12,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) Word has length 198 [2024-12-02 14:01:12,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:01:12,579 INFO L225 Difference]: With dead ends: 291 [2024-12-02 14:01:12,579 INFO L226 Difference]: Without dead ends: 195 [2024-12-02 14:01:12,580 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 14:01:12,581 INFO L435 NwaCegarLoop]: 255 mSDtfsCounter, 147 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:01:12,581 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 402 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:01:12,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-12-02 14:01:12,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 100. [2024-12-02 14:01:12,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 68 states have (on average 1.3823529411764706) internal successors, (94), 68 states have internal predecessors, (94), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-12-02 14:01:12,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 154 transitions. [2024-12-02 14:01:12,599 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 154 transitions. Word has length 198 [2024-12-02 14:01:12,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:01:12,600 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 154 transitions. [2024-12-02 14:01:12,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2024-12-02 14:01:12,601 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 154 transitions. [2024-12-02 14:01:12,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-12-02 14:01:12,604 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:01:12,605 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:12,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 14:01:12,605 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:01:12,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:01:12,606 INFO L85 PathProgramCache]: Analyzing trace with hash 870851384, now seen corresponding path program 1 times [2024-12-02 14:01:12,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:01:12,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557525217] [2024-12-02 14:01:12,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:01:12,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:01:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:01:13,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-12-02 14:01:13,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:01:13,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557525217] [2024-12-02 14:01:13,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557525217] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:01:13,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:01:13,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:01:13,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262084070] [2024-12-02 14:01:13,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:01:13,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:01:13,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:01:13,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:01:13,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:01:13,358 INFO L87 Difference]: Start difference. First operand 100 states and 154 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2024-12-02 14:01:13,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:01:13,537 INFO L93 Difference]: Finished difference Result 305 states and 463 transitions. [2024-12-02 14:01:13,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:01:13,538 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) Word has length 198 [2024-12-02 14:01:13,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:01:13,540 INFO L225 Difference]: With dead ends: 305 [2024-12-02 14:01:13,540 INFO L226 Difference]: Without dead ends: 208 [2024-12-02 14:01:13,541 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:01:13,542 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 132 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:01:13,542 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 530 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:01:13,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-12-02 14:01:13,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 175. [2024-12-02 14:01:13,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 136 states have (on average 1.4485294117647058) internal successors, (197), 137 states have internal predecessors, (197), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-12-02 14:01:13,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 269 transitions. [2024-12-02 14:01:13,561 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 269 transitions. Word has length 198 [2024-12-02 14:01:13,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:01:13,562 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 269 transitions. [2024-12-02 14:01:13,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2024-12-02 14:01:13,562 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 269 transitions. [2024-12-02 14:01:13,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-12-02 14:01:13,564 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:01:13,564 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:13,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 14:01:13,565 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:01:13,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:01:13,565 INFO L85 PathProgramCache]: Analyzing trace with hash 171392030, now seen corresponding path program 1 times [2024-12-02 14:01:13,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:01:13,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218630325] [2024-12-02 14:01:13,566 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:01:13,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:01:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:01:14,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-12-02 14:01:14,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:01:14,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218630325] [2024-12-02 14:01:14,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218630325] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:01:14,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:01:14,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:01:14,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828931933] [2024-12-02 14:01:14,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:01:14,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:01:14,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:01:14,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:01:14,035 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:01:14,035 INFO L87 Difference]: Start difference. First operand 175 states and 269 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2024-12-02 14:01:14,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:01:14,335 INFO L93 Difference]: Finished difference Result 519 states and 801 transitions. [2024-12-02 14:01:14,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:01:14,336 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 199 [2024-12-02 14:01:14,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:01:14,339 INFO L225 Difference]: With dead ends: 519 [2024-12-02 14:01:14,339 INFO L226 Difference]: Without dead ends: 347 [2024-12-02 14:01:14,339 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:01:14,340 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 189 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:01:14,341 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 466 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 14:01:14,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-12-02 14:01:14,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 345. [2024-12-02 14:01:14,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 268 states have (on average 1.4440298507462686) internal successors, (387), 270 states have internal predecessors, (387), 72 states have call successors, (72), 4 states have call predecessors, (72), 4 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2024-12-02 14:01:14,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 531 transitions. [2024-12-02 14:01:14,379 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 531 transitions. Word has length 199 [2024-12-02 14:01:14,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:01:14,379 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 531 transitions. [2024-12-02 14:01:14,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2024-12-02 14:01:14,380 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 531 transitions. [2024-12-02 14:01:14,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-12-02 14:01:14,382 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:01:14,382 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:14,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 14:01:14,382 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:01:14,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:01:14,383 INFO L85 PathProgramCache]: Analyzing trace with hash -646256420, now seen corresponding path program 1 times [2024-12-02 14:01:14,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:01:14,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444106309] [2024-12-02 14:01:14,383 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:01:14,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:01:14,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:01:15,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-12-02 14:01:15,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:01:15,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444106309] [2024-12-02 14:01:15,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444106309] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:01:15,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:01:15,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 14:01:15,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724939665] [2024-12-02 14:01:15,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:01:15,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 14:01:15,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:01:15,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 14:01:15,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:01:15,013 INFO L87 Difference]: Start difference. First operand 345 states and 531 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2024-12-02 14:01:16,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:01:16,268 INFO L93 Difference]: Finished difference Result 1039 states and 1595 transitions. [2024-12-02 14:01:16,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:01:16,269 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 199 [2024-12-02 14:01:16,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:01:16,274 INFO L225 Difference]: With dead ends: 1039 [2024-12-02 14:01:16,274 INFO L226 Difference]: Without dead ends: 697 [2024-12-02 14:01:16,275 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2024-12-02 14:01:16,276 INFO L435 NwaCegarLoop]: 234 mSDtfsCounter, 466 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:01:16,276 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 1047 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 14:01:16,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2024-12-02 14:01:16,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 685. [2024-12-02 14:01:16,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 532 states have (on average 1.4379699248120301) internal successors, (765), 536 states have internal predecessors, (765), 144 states have call successors, (144), 8 states have call predecessors, (144), 8 states have return successors, (144), 140 states have call predecessors, (144), 144 states have call successors, (144) [2024-12-02 14:01:16,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1053 transitions. [2024-12-02 14:01:16,344 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1053 transitions. Word has length 199 [2024-12-02 14:01:16,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:01:16,345 INFO L471 AbstractCegarLoop]: Abstraction has 685 states and 1053 transitions. [2024-12-02 14:01:16,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2024-12-02 14:01:16,345 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1053 transitions. [2024-12-02 14:01:16,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-12-02 14:01:16,347 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:01:16,347 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:16,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 14:01:16,347 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:01:16,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:01:16,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1455603046, now seen corresponding path program 1 times [2024-12-02 14:01:16,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:01:16,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128399851] [2024-12-02 14:01:16,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:01:16,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:01:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:03:11,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-12-02 14:03:11,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:03:11,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128399851] [2024-12-02 14:03:11,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128399851] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:03:11,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:03:11,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-12-02 14:03:11,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907989166] [2024-12-02 14:03:11,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:03:11,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 14:03:11,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:03:11,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 14:03:11,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-12-02 14:03:11,749 INFO L87 Difference]: Start difference. First operand 685 states and 1053 transitions. Second operand has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2024-12-02 14:03:50,150 WARN L286 SmtUtils]: Spent 5.39s on a formula simplification. DAG size of input: 244 DAG size of output: 231 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 14:04:01,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:04:01,079 INFO L93 Difference]: Finished difference Result 2197 states and 3293 transitions. [2024-12-02 14:04:01,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-12-02 14:04:01,080 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 199 [2024-12-02 14:04:01,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:04:01,086 INFO L225 Difference]: With dead ends: 2197 [2024-12-02 14:04:01,086 INFO L226 Difference]: Without dead ends: 1515 [2024-12-02 14:04:01,088 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 55.5s TimeCoverageRelationStatistics Valid=408, Invalid=1152, Unknown=0, NotChecked=0, Total=1560 [2024-12-02 14:04:01,088 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 941 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-12-02 14:04:01,089 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 895 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-12-02 14:04:01,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2024-12-02 14:04:01,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 855. [2024-12-02 14:04:01,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 702 states have (on average 1.4572649572649572) internal successors, (1023), 706 states have internal predecessors, (1023), 144 states have call successors, (144), 8 states have call predecessors, (144), 8 states have return successors, (144), 140 states have call predecessors, (144), 144 states have call successors, (144) [2024-12-02 14:04:01,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1311 transitions. [2024-12-02 14:04:01,158 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1311 transitions. Word has length 199 [2024-12-02 14:04:01,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:04:01,159 INFO L471 AbstractCegarLoop]: Abstraction has 855 states and 1311 transitions. [2024-12-02 14:04:01,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2024-12-02 14:04:01,159 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1311 transitions. [2024-12-02 14:04:01,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-12-02 14:04:01,162 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:04:01,162 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:04:01,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 14:04:01,163 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:04:01,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:04:01,163 INFO L85 PathProgramCache]: Analyzing trace with hash 319404316, now seen corresponding path program 1 times [2024-12-02 14:04:01,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:04:01,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541654054] [2024-12-02 14:04:01,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:04:01,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:04:01,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:05:57,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-12-02 14:05:57,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:05:57,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541654054] [2024-12-02 14:05:57,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541654054] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:05:57,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:05:57,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 14:05:57,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773137015] [2024-12-02 14:05:57,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:05:57,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 14:05:57,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:05:57,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 14:05:57,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2024-12-02 14:05:57,130 INFO L87 Difference]: Start difference. First operand 855 states and 1311 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2024-12-02 14:06:02,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:06:02,286 INFO L93 Difference]: Finished difference Result 2685 states and 4075 transitions. [2024-12-02 14:06:02,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 14:06:02,287 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) Word has length 199 [2024-12-02 14:06:02,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:06:02,295 INFO L225 Difference]: With dead ends: 2685 [2024-12-02 14:06:02,295 INFO L226 Difference]: Without dead ends: 1833 [2024-12-02 14:06:02,297 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2024-12-02 14:06:02,298 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 406 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:06:02,298 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 1078 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-12-02 14:06:02,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1833 states. [2024-12-02 14:06:02,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1833 to 1272. [2024-12-02 14:06:02,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272 states, 1025 states have (on average 1.4595121951219512) internal successors, (1496), 1033 states have internal predecessors, (1496), 230 states have call successors, (230), 16 states have call predecessors, (230), 16 states have return successors, (230), 222 states have call predecessors, (230), 230 states have call successors, (230) [2024-12-02 14:06:02,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1956 transitions. [2024-12-02 14:06:02,504 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1956 transitions. Word has length 199 [2024-12-02 14:06:02,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:06:02,505 INFO L471 AbstractCegarLoop]: Abstraction has 1272 states and 1956 transitions. [2024-12-02 14:06:02,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2024-12-02 14:06:02,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1956 transitions. [2024-12-02 14:06:02,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-12-02 14:06:02,509 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:06:02,509 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:06:02,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 14:06:02,510 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:06:02,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:06:02,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1052053224, now seen corresponding path program 1 times [2024-12-02 14:06:02,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:06:02,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875573408] [2024-12-02 14:06:02,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:06:02,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:06:02,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:08:41,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-12-02 14:08:41,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:08:41,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875573408] [2024-12-02 14:08:41,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875573408] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:08:41,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:08:41,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-12-02 14:08:41,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785768218] [2024-12-02 14:08:41,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:08:41,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 14:08:41,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:08:41,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 14:08:41,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-12-02 14:08:41,494 INFO L87 Difference]: Start difference. First operand 1272 states and 1956 transitions. Second operand has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2024-12-02 14:08:52,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:08:52,821 INFO L93 Difference]: Finished difference Result 3557 states and 5370 transitions. [2024-12-02 14:08:52,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 14:08:52,822 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) Word has length 199 [2024-12-02 14:08:52,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:08:52,833 INFO L225 Difference]: With dead ends: 3557 [2024-12-02 14:08:52,833 INFO L226 Difference]: Without dead ends: 2288 [2024-12-02 14:08:52,836 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=223, Invalid=533, Unknown=0, NotChecked=0, Total=756 [2024-12-02 14:08:52,837 INFO L435 NwaCegarLoop]: 225 mSDtfsCounter, 718 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:08:52,837 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 1344 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1426 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-12-02 14:08:52,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2288 states. [2024-12-02 14:08:53,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2288 to 1759. [2024-12-02 14:08:53,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1759 states, 1411 states have (on average 1.4386959603118357) internal successors, (2030), 1425 states have internal predecessors, (2030), 320 states have call successors, (320), 27 states have call predecessors, (320), 27 states have return successors, (320), 306 states have call predecessors, (320), 320 states have call successors, (320) [2024-12-02 14:08:53,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1759 states to 1759 states and 2670 transitions. [2024-12-02 14:08:53,158 INFO L78 Accepts]: Start accepts. Automaton has 1759 states and 2670 transitions. Word has length 199 [2024-12-02 14:08:53,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:08:53,159 INFO L471 AbstractCegarLoop]: Abstraction has 1759 states and 2670 transitions. [2024-12-02 14:08:53,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2024-12-02 14:08:53,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1759 states and 2670 transitions. [2024-12-02 14:08:53,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-12-02 14:08:53,162 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:08:53,162 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:08:53,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 14:08:53,162 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:08:53,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:08:53,163 INFO L85 PathProgramCache]: Analyzing trace with hash 722954138, now seen corresponding path program 1 times [2024-12-02 14:08:53,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:08:53,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782227309] [2024-12-02 14:08:53,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:08:53,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:08:53,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:11:45,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-12-02 14:11:45,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:11:45,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782227309] [2024-12-02 14:11:45,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782227309] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:11:45,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:11:45,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-12-02 14:11:45,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537607896] [2024-12-02 14:11:45,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:11:45,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 14:11:45,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:11:45,821 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 14:11:45,821 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2024-12-02 14:11:45,821 INFO L87 Difference]: Start difference. First operand 1759 states and 2670 transitions. Second operand has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 states have internal predecessors, (52), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2024-12-02 14:12:03,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:12:03,777 INFO L93 Difference]: Finished difference Result 3149 states and 4765 transitions. [2024-12-02 14:12:03,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 14:12:03,778 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 states have internal predecessors, (52), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 199 [2024-12-02 14:12:03,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:12:03,783 INFO L225 Difference]: With dead ends: 3149 [2024-12-02 14:12:03,783 INFO L226 Difference]: Without dead ends: 1921 [2024-12-02 14:12:03,785 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 21.2s TimeCoverageRelationStatistics Valid=229, Invalid=527, Unknown=0, NotChecked=0, Total=756 [2024-12-02 14:12:03,785 INFO L435 NwaCegarLoop]: 234 mSDtfsCounter, 417 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 2581 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 1359 SdHoareTripleChecker+Invalid, 2660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2024-12-02 14:12:03,786 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 1359 Invalid, 2660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2581 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2024-12-02 14:12:03,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1921 states. [2024-12-02 14:12:03,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1921 to 1727. [2024-12-02 14:12:03,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1727 states, 1379 states have (on average 1.4343727338651195) internal successors, (1978), 1393 states have internal predecessors, (1978), 320 states have call successors, (320), 27 states have call predecessors, (320), 27 states have return successors, (320), 306 states have call predecessors, (320), 320 states have call successors, (320) [2024-12-02 14:12:03,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2618 transitions. [2024-12-02 14:12:03,979 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2618 transitions. Word has length 199 [2024-12-02 14:12:03,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:12:03,979 INFO L471 AbstractCegarLoop]: Abstraction has 1727 states and 2618 transitions. [2024-12-02 14:12:03,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 states have internal predecessors, (52), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2024-12-02 14:12:03,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2618 transitions. [2024-12-02 14:12:03,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-12-02 14:12:03,981 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:12:03,981 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:12:03,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 14:12:03,981 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:12:03,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:12:03,982 INFO L85 PathProgramCache]: Analyzing trace with hash 30843420, now seen corresponding path program 1 times [2024-12-02 14:12:03,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:12:03,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398931649] [2024-12-02 14:12:03,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:12:03,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:12:04,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:12:04,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-12-02 14:12:04,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:12:04,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398931649] [2024-12-02 14:12:04,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398931649] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:12:04,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:12:04,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:12:04,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905868374] [2024-12-02 14:12:04,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:12:04,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:12:04,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:12:04,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:12:04,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:12:04,120 INFO L87 Difference]: Start difference. First operand 1727 states and 2618 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2024-12-02 14:12:04,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:12:04,601 INFO L93 Difference]: Finished difference Result 3505 states and 5307 transitions. [2024-12-02 14:12:04,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:12:04,601 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) Word has length 199 [2024-12-02 14:12:04,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:12:04,608 INFO L225 Difference]: With dead ends: 3505 [2024-12-02 14:12:04,608 INFO L226 Difference]: Without dead ends: 2847 [2024-12-02 14:12:04,609 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 14:12:04,610 INFO L435 NwaCegarLoop]: 182 mSDtfsCounter, 157 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:12:04,610 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 590 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 14:12:04,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2847 states. [2024-12-02 14:12:04,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2847 to 2343. [2024-12-02 14:12:04,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2343 states, 1841 states have (on average 1.4285714285714286) internal successors, (2630), 1859 states have internal predecessors, (2630), 464 states have call successors, (464), 37 states have call predecessors, (464), 37 states have return successors, (464), 446 states have call predecessors, (464), 464 states have call successors, (464) [2024-12-02 14:12:04,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2343 states to 2343 states and 3558 transitions. [2024-12-02 14:12:04,868 INFO L78 Accepts]: Start accepts. Automaton has 2343 states and 3558 transitions. Word has length 199 [2024-12-02 14:12:04,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:12:04,868 INFO L471 AbstractCegarLoop]: Abstraction has 2343 states and 3558 transitions. [2024-12-02 14:12:04,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2024-12-02 14:12:04,869 INFO L276 IsEmpty]: Start isEmpty. Operand 2343 states and 3558 transitions. [2024-12-02 14:12:04,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-12-02 14:12:04,871 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:12:04,871 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:12:04,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 14:12:04,871 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:12:04,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:12:04,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1347251149, now seen corresponding path program 1 times [2024-12-02 14:12:04,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:12:04,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590310000] [2024-12-02 14:12:04,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:12:04,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:12:04,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:14:03,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-12-02 14:14:03,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:14:03,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590310000] [2024-12-02 14:14:03,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590310000] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:14:03,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:14:03,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-12-02 14:14:03,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228077766] [2024-12-02 14:14:03,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:14:03,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 14:14:03,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:14:03,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 14:14:03,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-12-02 14:14:03,249 INFO L87 Difference]: Start difference. First operand 2343 states and 3558 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2024-12-02 14:14:14,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:14:14,772 INFO L93 Difference]: Finished difference Result 4825 states and 7214 transitions. [2024-12-02 14:14:14,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-12-02 14:14:14,773 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) Word has length 200 [2024-12-02 14:14:14,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:14:14,781 INFO L225 Difference]: With dead ends: 4825 [2024-12-02 14:14:14,781 INFO L226 Difference]: Without dead ends: 3101 [2024-12-02 14:14:14,783 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=246, Invalid=510, Unknown=0, NotChecked=0, Total=756 [2024-12-02 14:14:14,784 INFO L435 NwaCegarLoop]: 215 mSDtfsCounter, 531 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 1342 SdHoareTripleChecker+Invalid, 1511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-12-02 14:14:14,784 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 1342 Invalid, 1511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1474 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-12-02 14:14:14,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3101 states. [2024-12-02 14:14:15,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3101 to 2411. [2024-12-02 14:14:15,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2411 states, 1909 states have (on average 1.432163436354112) internal successors, (2734), 1927 states have internal predecessors, (2734), 464 states have call successors, (464), 37 states have call predecessors, (464), 37 states have return successors, (464), 446 states have call predecessors, (464), 464 states have call successors, (464) [2024-12-02 14:14:15,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2411 states to 2411 states and 3662 transitions. [2024-12-02 14:14:15,041 INFO L78 Accepts]: Start accepts. Automaton has 2411 states and 3662 transitions. Word has length 200 [2024-12-02 14:14:15,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:14:15,042 INFO L471 AbstractCegarLoop]: Abstraction has 2411 states and 3662 transitions. [2024-12-02 14:14:15,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2024-12-02 14:14:15,042 INFO L276 IsEmpty]: Start isEmpty. Operand 2411 states and 3662 transitions. [2024-12-02 14:14:15,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-12-02 14:14:15,044 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:14:15,044 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:14:15,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 14:14:15,044 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:14:15,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:14:15,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1172708785, now seen corresponding path program 1 times [2024-12-02 14:14:15,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:14:15,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682735931] [2024-12-02 14:14:15,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:14:15,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:14:15,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat