./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label08.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label08.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC --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 065db717d2cdf97087f1b115414109818504267e957198e710d38901ef11a98a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:18:31,501 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:18:31,587 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:18:31,600 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:18:31,600 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:18:31,640 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:18:31,641 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:18:31,641 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:18:31,642 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:18:31,642 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:18:31,642 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:18:31,642 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:18:31,642 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:18:31,642 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:18:31,642 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:18:31,643 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:18:31,643 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:18:31,643 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:18:31,643 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:18:31,643 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:18:31,643 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:18:31,643 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:18:31,643 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:18:31,644 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:18:31,644 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:18:31,644 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:18:31,644 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:18:31,644 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:18:31,644 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:18:31,644 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:18:31,644 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:18:31,644 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:18:31,645 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:18:31,645 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:18:31,645 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:18:31,645 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:18:31,645 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:18:31,645 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:18:31,645 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:18:31,645 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:18:31,646 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:18:31,646 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:18:31,646 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:18:31,646 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:18:31,646 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:18:31,646 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:18:31,646 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:18:31,646 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:18:31,646 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_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC 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 -> 065db717d2cdf97087f1b115414109818504267e957198e710d38901ef11a98a [2024-11-24 00:18:31,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:18:31,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:18:31,945 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:18:31,946 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:18:31,946 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:18:31,948 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label08.c [2024-11-24 00:18:34,830 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/data/8dd6ccc58/8b6b7490ab59458c86dfe4005ad621b0/FLAG7921d95d8 [2024-11-24 00:18:35,534 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:18:35,534 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label08.c [2024-11-24 00:18:35,579 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/data/8dd6ccc58/8b6b7490ab59458c86dfe4005ad621b0/FLAG7921d95d8 [2024-11-24 00:18:35,601 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/data/8dd6ccc58/8b6b7490ab59458c86dfe4005ad621b0 [2024-11-24 00:18:35,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:18:35,606 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:18:35,609 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:18:35,609 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:18:35,614 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:18:35,615 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:18:35" (1/1) ... [2024-11-24 00:18:35,617 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41e96494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:18:35, skipping insertion in model container [2024-11-24 00:18:35,617 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:18:35" (1/1) ... [2024-11-24 00:18:35,751 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:18:36,162 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_15a5512f-97e2-4dfe-bb85-d4232c3857ba/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label08.c[11640,11653] [2024-11-24 00:18:36,238 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_15a5512f-97e2-4dfe-bb85-d4232c3857ba/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label08.c[15147,15160] [2024-11-24 00:18:37,115 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:18:37,135 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:18:37,194 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_15a5512f-97e2-4dfe-bb85-d4232c3857ba/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label08.c[11640,11653] [2024-11-24 00:18:37,205 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_15a5512f-97e2-4dfe-bb85-d4232c3857ba/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label08.c[15147,15160] [2024-11-24 00:18:37,724 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:18:37,758 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:18:37,758 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:18:37 WrapperNode [2024-11-24 00:18:37,759 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:18:37,760 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:18:37,760 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:18:37,761 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:18:37,768 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:18:37" (1/1) ... [2024-11-24 00:18:37,839 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:18:37" (1/1) ... [2024-11-24 00:18:38,227 INFO L138 Inliner]: procedures = 36, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5097 [2024-11-24 00:18:38,228 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:18:38,228 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:18:38,228 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:18:38,228 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:18:38,238 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:18:37" (1/1) ... [2024-11-24 00:18:38,239 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:18:37" (1/1) ... [2024-11-24 00:18:38,285 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:18:37" (1/1) ... [2024-11-24 00:18:38,574 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]. [2024-11-24 00:18:38,574 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:18:37" (1/1) ... [2024-11-24 00:18:38,575 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:18:37" (1/1) ... [2024-11-24 00:18:38,708 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:18:37" (1/1) ... [2024-11-24 00:18:38,719 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:18:37" (1/1) ... [2024-11-24 00:18:38,760 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:18:37" (1/1) ... [2024-11-24 00:18:38,779 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:18:37" (1/1) ... [2024-11-24 00:18:38,793 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:18:37" (1/1) ... [2024-11-24 00:18:38,836 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:18:38,837 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:18:38,838 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:18:38,838 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:18:38,838 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:18:37" (1/1) ... [2024-11-24 00:18:38,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:18:38,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:18:38,877 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:18:38,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:18:38,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:18:38,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:18:38,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:18:38,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:18:39,052 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:18:39,054 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:18:45,162 INFO L? ?]: Removed 744 outVars from TransFormulas that were not future-live. [2024-11-24 00:18:45,162 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:18:45,195 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:18:45,195 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-24 00:18:45,196 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:18:45 BoogieIcfgContainer [2024-11-24 00:18:45,196 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:18:45,202 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:18:45,203 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:18:45,207 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:18:45,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:18:35" (1/3) ... [2024-11-24 00:18:45,212 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d0283e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:18:45, skipping insertion in model container [2024-11-24 00:18:45,212 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:18:37" (2/3) ... [2024-11-24 00:18:45,212 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d0283e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:18:45, skipping insertion in model container [2024-11-24 00:18:45,212 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:18:45" (3/3) ... [2024-11-24 00:18:45,214 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label08.c [2024-11-24 00:18:45,231 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:18:45,234 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label08.c that has 1 procedures, 900 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-24 00:18:45,322 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:18:45,334 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;@179b0805, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:18:45,334 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-24 00:18:45,341 INFO L276 IsEmpty]: Start isEmpty. Operand has 900 states, 897 states have (on average 1.9041248606465997) internal successors, (1708), 899 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:45,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-24 00:18:45,348 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:45,348 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:45,349 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:45,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:45,354 INFO L85 PathProgramCache]: Analyzing trace with hash 920833856, now seen corresponding path program 1 times [2024-11-24 00:18:45,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:45,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656400617] [2024-11-24 00:18:45,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:45,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:45,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:45,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:45,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656400617] [2024-11-24 00:18:45,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656400617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:45,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:45,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:18:45,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785007287] [2024-11-24 00:18:45,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:45,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 00:18:45,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:45,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 00:18:45,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:18:45,645 INFO L87 Difference]: Start difference. First operand has 900 states, 897 states have (on average 1.9041248606465997) internal successors, (1708), 899 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:45,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:45,775 INFO L93 Difference]: Finished difference Result 1763 states and 3346 transitions. [2024-11-24 00:18:45,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:18:45,777 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-24 00:18:45,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:45,799 INFO L225 Difference]: With dead ends: 1763 [2024-11-24 00:18:45,799 INFO L226 Difference]: Without dead ends: 834 [2024-11-24 00:18:45,808 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:18:45,811 INFO L435 NwaCegarLoop]: 1642 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, 1642 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 [2024-11-24 00:18:45,811 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1642 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:18:45,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2024-11-24 00:18:45,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 834. [2024-11-24 00:18:45,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 832 states have (on average 1.8930288461538463) internal successors, (1575), 833 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:45,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1575 transitions. [2024-11-24 00:18:45,920 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1575 transitions. Word has length 25 [2024-11-24 00:18:45,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:45,920 INFO L471 AbstractCegarLoop]: Abstraction has 834 states and 1575 transitions. [2024-11-24 00:18:45,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:45,921 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1575 transitions. [2024-11-24 00:18:45,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-24 00:18:45,922 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:45,922 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:45,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 00:18:45,922 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:45,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:45,923 INFO L85 PathProgramCache]: Analyzing trace with hash -768109886, now seen corresponding path program 1 times [2024-11-24 00:18:45,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:45,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646316397] [2024-11-24 00:18:45,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:45,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:46,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:46,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:46,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646316397] [2024-11-24 00:18:46,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646316397] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:46,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:46,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:18:46,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87322323] [2024-11-24 00:18:46,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:46,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:18:46,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:46,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:18:46,291 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:18:46,292 INFO L87 Difference]: Start difference. First operand 834 states and 1575 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:46,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:46,463 INFO L93 Difference]: Finished difference Result 881 states and 1647 transitions. [2024-11-24 00:18:46,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:18:46,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-24 00:18:46,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:46,471 INFO L225 Difference]: With dead ends: 881 [2024-11-24 00:18:46,472 INFO L226 Difference]: Without dead ends: 834 [2024-11-24 00:18:46,472 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:18:46,476 INFO L435 NwaCegarLoop]: 1573 mSDtfsCounter, 0 mSDsluCounter, 4683 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6256 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:46,476 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6256 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:18:46,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2024-11-24 00:18:46,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 834. [2024-11-24 00:18:46,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 832 states have (on average 1.8557692307692308) internal successors, (1544), 833 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:46,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1544 transitions. [2024-11-24 00:18:46,526 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1544 transitions. Word has length 25 [2024-11-24 00:18:46,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:46,526 INFO L471 AbstractCegarLoop]: Abstraction has 834 states and 1544 transitions. [2024-11-24 00:18:46,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:46,527 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1544 transitions. [2024-11-24 00:18:46,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-24 00:18:46,529 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:46,530 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:46,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:18:46,530 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:46,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:46,533 INFO L85 PathProgramCache]: Analyzing trace with hash 802022509, now seen corresponding path program 1 times [2024-11-24 00:18:46,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:46,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216429148] [2024-11-24 00:18:46,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:46,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:46,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:46,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:46,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216429148] [2024-11-24 00:18:46,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216429148] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:46,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:46,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:18:46,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136703135] [2024-11-24 00:18:46,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:46,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:18:46,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:46,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:18:46,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:18:46,642 INFO L87 Difference]: Start difference. First operand 834 states and 1544 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:50,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:50,818 INFO L93 Difference]: Finished difference Result 2338 states and 4417 transitions. [2024-11-24 00:18:50,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:18:50,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-24 00:18:50,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:50,827 INFO L225 Difference]: With dead ends: 2338 [2024-11-24 00:18:50,827 INFO L226 Difference]: Without dead ends: 1585 [2024-11-24 00:18:50,829 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:18:50,835 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 944 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2377 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 3088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 2377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:50,835 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [944 Valid, 220 Invalid, 3088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 2377 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-24 00:18:50,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2024-11-24 00:18:50,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1585. [2024-11-24 00:18:50,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1583 states have (on average 1.82122552116235) internal successors, (2883), 1584 states have internal predecessors, (2883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:50,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2883 transitions. [2024-11-24 00:18:50,918 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2883 transitions. Word has length 30 [2024-11-24 00:18:50,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:50,918 INFO L471 AbstractCegarLoop]: Abstraction has 1585 states and 2883 transitions. [2024-11-24 00:18:50,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:50,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2883 transitions. [2024-11-24 00:18:50,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-24 00:18:50,922 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:50,922 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:50,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:18:50,922 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:50,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:50,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1032471947, now seen corresponding path program 1 times [2024-11-24 00:18:50,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:50,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067729613] [2024-11-24 00:18:50,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:50,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:50,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:51,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:51,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:51,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067729613] [2024-11-24 00:18:51,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067729613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:51,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:51,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:18:51,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452723058] [2024-11-24 00:18:51,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:51,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:18:51,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:51,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:18:51,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:18:51,257 INFO L87 Difference]: Start difference. First operand 1585 states and 2883 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:51,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:51,568 INFO L93 Difference]: Finished difference Result 2015 states and 3563 transitions. [2024-11-24 00:18:51,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 00:18:51,569 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-24 00:18:51,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:51,578 INFO L225 Difference]: With dead ends: 2015 [2024-11-24 00:18:51,578 INFO L226 Difference]: Without dead ends: 1972 [2024-11-24 00:18:51,580 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2024-11-24 00:18:51,581 INFO L435 NwaCegarLoop]: 1540 mSDtfsCounter, 7906 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7906 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:51,584 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7906 Valid, 3025 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:18:51,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2024-11-24 00:18:51,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 1626. [2024-11-24 00:18:51,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1624 states have (on average 1.8152709359605912) internal successors, (2948), 1625 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:51,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 2948 transitions. [2024-11-24 00:18:51,632 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 2948 transitions. Word has length 55 [2024-11-24 00:18:51,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:51,632 INFO L471 AbstractCegarLoop]: Abstraction has 1626 states and 2948 transitions. [2024-11-24 00:18:51,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:51,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 2948 transitions. [2024-11-24 00:18:51,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-24 00:18:51,637 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:51,638 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:51,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:18:51,638 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:51,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:51,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1347601061, now seen corresponding path program 1 times [2024-11-24 00:18:51,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:51,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731102089] [2024-11-24 00:18:51,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:51,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:51,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:51,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:51,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731102089] [2024-11-24 00:18:51,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731102089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:51,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:51,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:18:51,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101534651] [2024-11-24 00:18:51,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:51,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:18:51,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:51,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:18:51,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:18:51,784 INFO L87 Difference]: Start difference. First operand 1626 states and 2948 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:51,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:51,827 INFO L93 Difference]: Finished difference Result 1783 states and 3195 transitions. [2024-11-24 00:18:51,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:18:51,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-24 00:18:51,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:51,836 INFO L225 Difference]: With dead ends: 1783 [2024-11-24 00:18:51,837 INFO L226 Difference]: Without dead ends: 1699 [2024-11-24 00:18:51,837 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:18:51,839 INFO L435 NwaCegarLoop]: 1542 mSDtfsCounter, 1482 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:51,839 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1605 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:18:51,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2024-11-24 00:18:51,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1697. [2024-11-24 00:18:51,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1697 states, 1695 states have (on average 1.8041297935103244) internal successors, (3058), 1696 states have internal predecessors, (3058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:51,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 3058 transitions. [2024-11-24 00:18:51,898 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 3058 transitions. Word has length 57 [2024-11-24 00:18:51,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:51,899 INFO L471 AbstractCegarLoop]: Abstraction has 1697 states and 3058 transitions. [2024-11-24 00:18:51,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:51,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 3058 transitions. [2024-11-24 00:18:51,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-24 00:18:51,901 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:51,901 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:51,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 00:18:51,902 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:51,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:51,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1281107549, now seen corresponding path program 1 times [2024-11-24 00:18:51,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:51,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709089437] [2024-11-24 00:18:51,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:51,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:52,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:52,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:52,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709089437] [2024-11-24 00:18:52,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709089437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:52,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:52,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:18:52,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709034998] [2024-11-24 00:18:52,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:52,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:18:52,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:52,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:18:52,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:18:52,473 INFO L87 Difference]: Start difference. First operand 1697 states and 3058 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:52,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:52,699 INFO L93 Difference]: Finished difference Result 1854 states and 3302 transitions. [2024-11-24 00:18:52,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:18:52,700 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-24 00:18:52,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:52,712 INFO L225 Difference]: With dead ends: 1854 [2024-11-24 00:18:52,713 INFO L226 Difference]: Without dead ends: 1699 [2024-11-24 00:18:52,714 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:18:52,714 INFO L435 NwaCegarLoop]: 1537 mSDtfsCounter, 1509 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 1862 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:52,716 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1509 Valid, 1862 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:18:52,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2024-11-24 00:18:52,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1697. [2024-11-24 00:18:52,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1697 states, 1695 states have (on average 1.8029498525073746) internal successors, (3056), 1696 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:52,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 3056 transitions. [2024-11-24 00:18:52,761 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 3056 transitions. Word has length 57 [2024-11-24 00:18:52,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:52,761 INFO L471 AbstractCegarLoop]: Abstraction has 1697 states and 3056 transitions. [2024-11-24 00:18:52,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:52,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 3056 transitions. [2024-11-24 00:18:52,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-24 00:18:52,762 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:52,762 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:52,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 00:18:52,763 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:52,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:52,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1474351433, now seen corresponding path program 1 times [2024-11-24 00:18:52,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:52,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145537887] [2024-11-24 00:18:52,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:52,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:52,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:53,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:53,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:53,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145537887] [2024-11-24 00:18:53,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145537887] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:53,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:53,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 00:18:53,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684791964] [2024-11-24 00:18:53,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:53,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:18:53,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:53,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:18:53,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:18:53,168 INFO L87 Difference]: Start difference. First operand 1697 states and 3056 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:53,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:53,263 INFO L93 Difference]: Finished difference Result 1705 states and 3065 transitions. [2024-11-24 00:18:53,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:18:53,264 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-24 00:18:53,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:53,272 INFO L225 Difference]: With dead ends: 1705 [2024-11-24 00:18:53,272 INFO L226 Difference]: Without dead ends: 1703 [2024-11-24 00:18:53,274 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:18:53,276 INFO L435 NwaCegarLoop]: 1538 mSDtfsCounter, 0 mSDsluCounter, 9215 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10753 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:53,276 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10753 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:18:53,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2024-11-24 00:18:53,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1703. [2024-11-24 00:18:53,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1703 states, 1701 states have (on average 1.7995296884185774) internal successors, (3061), 1702 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:53,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1703 states to 1703 states and 3061 transitions. [2024-11-24 00:18:53,321 INFO L78 Accepts]: Start accepts. Automaton has 1703 states and 3061 transitions. Word has length 58 [2024-11-24 00:18:53,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:53,321 INFO L471 AbstractCegarLoop]: Abstraction has 1703 states and 3061 transitions. [2024-11-24 00:18:53,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:53,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1703 states and 3061 transitions. [2024-11-24 00:18:53,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-24 00:18:53,323 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:53,323 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:53,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 00:18:53,324 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:53,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:53,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1913192451, now seen corresponding path program 1 times [2024-11-24 00:18:53,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:53,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315494402] [2024-11-24 00:18:53,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:53,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:53,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:53,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:53,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:53,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315494402] [2024-11-24 00:18:53,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315494402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:53,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:53,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:18:53,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239231970] [2024-11-24 00:18:53,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:53,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:18:53,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:53,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:18:53,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:18:53,421 INFO L87 Difference]: Start difference. First operand 1703 states and 3061 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:53,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:53,463 INFO L93 Difference]: Finished difference Result 1878 states and 3327 transitions. [2024-11-24 00:18:53,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:18:53,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-24 00:18:53,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:53,470 INFO L225 Difference]: With dead ends: 1878 [2024-11-24 00:18:53,471 INFO L226 Difference]: Without dead ends: 1788 [2024-11-24 00:18:53,471 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:18:53,472 INFO L435 NwaCegarLoop]: 1596 mSDtfsCounter, 1496 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:53,475 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1665 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:18:53,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1788 states. [2024-11-24 00:18:53,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1788 to 1786. [2024-11-24 00:18:53,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1786 states, 1784 states have (on average 1.7853139013452914) internal successors, (3185), 1785 states have internal predecessors, (3185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:53,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1786 states to 1786 states and 3185 transitions. [2024-11-24 00:18:53,522 INFO L78 Accepts]: Start accepts. Automaton has 1786 states and 3185 transitions. Word has length 59 [2024-11-24 00:18:53,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:53,523 INFO L471 AbstractCegarLoop]: Abstraction has 1786 states and 3185 transitions. [2024-11-24 00:18:53,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:53,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1786 states and 3185 transitions. [2024-11-24 00:18:53,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-24 00:18:53,524 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:53,524 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:53,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 00:18:53,524 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:53,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:53,525 INFO L85 PathProgramCache]: Analyzing trace with hash -2117918461, now seen corresponding path program 1 times [2024-11-24 00:18:53,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:53,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865339062] [2024-11-24 00:18:53,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:53,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:53,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:53,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:53,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:53,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865339062] [2024-11-24 00:18:53,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865339062] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:53,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:53,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:18:53,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435637187] [2024-11-24 00:18:53,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:53,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:18:53,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:53,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:18:53,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:18:53,611 INFO L87 Difference]: Start difference. First operand 1786 states and 3185 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:53,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:53,654 INFO L93 Difference]: Finished difference Result 2244 states and 3877 transitions. [2024-11-24 00:18:53,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:18:53,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-24 00:18:53,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:53,662 INFO L225 Difference]: With dead ends: 2244 [2024-11-24 00:18:53,662 INFO L226 Difference]: Without dead ends: 2003 [2024-11-24 00:18:53,663 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:18:53,664 INFO L435 NwaCegarLoop]: 1598 mSDtfsCounter, 1494 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1671 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:53,664 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1671 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:18:53,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2003 states. [2024-11-24 00:18:53,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2003 to 2001. [2024-11-24 00:18:53,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2001 states, 1999 states have (on average 1.752376188094047) internal successors, (3503), 2000 states have internal predecessors, (3503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:53,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2001 states to 2001 states and 3503 transitions. [2024-11-24 00:18:53,720 INFO L78 Accepts]: Start accepts. Automaton has 2001 states and 3503 transitions. Word has length 59 [2024-11-24 00:18:53,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:53,721 INFO L471 AbstractCegarLoop]: Abstraction has 2001 states and 3503 transitions. [2024-11-24 00:18:53,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:53,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2001 states and 3503 transitions. [2024-11-24 00:18:53,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-24 00:18:53,722 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:53,722 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:53,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 00:18:53,723 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:53,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:53,724 INFO L85 PathProgramCache]: Analyzing trace with hash -879656445, now seen corresponding path program 1 times [2024-11-24 00:18:53,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:53,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826907383] [2024-11-24 00:18:53,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:53,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:53,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:53,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:53,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:53,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826907383] [2024-11-24 00:18:53,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826907383] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:53,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:53,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:18:53,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390269015] [2024-11-24 00:18:53,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:53,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:18:53,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:53,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:18:53,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:18:53,794 INFO L87 Difference]: Start difference. First operand 2001 states and 3503 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:53,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:53,845 INFO L93 Difference]: Finished difference Result 2865 states and 4789 transitions. [2024-11-24 00:18:53,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:18:53,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-24 00:18:53,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:53,854 INFO L225 Difference]: With dead ends: 2865 [2024-11-24 00:18:53,854 INFO L226 Difference]: Without dead ends: 2409 [2024-11-24 00:18:53,855 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:18:53,856 INFO L435 NwaCegarLoop]: 1596 mSDtfsCounter, 1492 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 1673 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:53,856 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 1673 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:18:53,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2409 states. [2024-11-24 00:18:53,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2409 to 2407. [2024-11-24 00:18:53,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2407 states, 2405 states have (on average 1.701039501039501) internal successors, (4091), 2406 states have internal predecessors, (4091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:53,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2407 states to 2407 states and 4091 transitions. [2024-11-24 00:18:53,926 INFO L78 Accepts]: Start accepts. Automaton has 2407 states and 4091 transitions. Word has length 59 [2024-11-24 00:18:53,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:53,926 INFO L471 AbstractCegarLoop]: Abstraction has 2407 states and 4091 transitions. [2024-11-24 00:18:53,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:53,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2407 states and 4091 transitions. [2024-11-24 00:18:53,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-24 00:18:53,927 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:53,927 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:53,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 00:18:53,927 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:53,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:53,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1199842051, now seen corresponding path program 1 times [2024-11-24 00:18:53,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:53,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837160202] [2024-11-24 00:18:53,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:53,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:53,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:54,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:54,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:54,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837160202] [2024-11-24 00:18:54,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837160202] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:54,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:54,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:18:54,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683957067] [2024-11-24 00:18:54,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:54,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:18:54,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:54,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:18:54,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:18:54,001 INFO L87 Difference]: Start difference. First operand 2407 states and 4091 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:54,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:54,061 INFO L93 Difference]: Finished difference Result 4035 states and 6469 transitions. [2024-11-24 00:18:54,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:18:54,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-24 00:18:54,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:54,072 INFO L225 Difference]: With dead ends: 4035 [2024-11-24 00:18:54,072 INFO L226 Difference]: Without dead ends: 3173 [2024-11-24 00:18:54,075 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:18:54,075 INFO L435 NwaCegarLoop]: 1594 mSDtfsCounter, 1490 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1675 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:54,076 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1675 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:18:54,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3173 states. [2024-11-24 00:18:54,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3173 to 3171. [2024-11-24 00:18:54,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3171 states, 3169 states have (on average 1.631745029977911) internal successors, (5171), 3170 states have internal predecessors, (5171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:54,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3171 states to 3171 states and 5171 transitions. [2024-11-24 00:18:54,171 INFO L78 Accepts]: Start accepts. Automaton has 3171 states and 5171 transitions. Word has length 59 [2024-11-24 00:18:54,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:54,171 INFO L471 AbstractCegarLoop]: Abstraction has 3171 states and 5171 transitions. [2024-11-24 00:18:54,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:54,172 INFO L276 IsEmpty]: Start isEmpty. Operand 3171 states and 5171 transitions. [2024-11-24 00:18:54,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-24 00:18:54,173 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:54,173 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:54,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 00:18:54,174 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:54,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:54,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1314192381, now seen corresponding path program 1 times [2024-11-24 00:18:54,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:54,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362278901] [2024-11-24 00:18:54,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:54,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:54,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:54,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:18:54,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:54,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362278901] [2024-11-24 00:18:54,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362278901] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:54,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:54,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:18:54,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689457466] [2024-11-24 00:18:54,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:54,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:18:54,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:54,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:18:54,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:18:54,253 INFO L87 Difference]: Start difference. First operand 3171 states and 5171 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:54,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:54,347 INFO L93 Difference]: Finished difference Result 6231 states and 9541 transitions. [2024-11-24 00:18:54,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:18:54,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-24 00:18:54,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:54,374 INFO L225 Difference]: With dead ends: 6231 [2024-11-24 00:18:54,374 INFO L226 Difference]: Without dead ends: 4605 [2024-11-24 00:18:54,380 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:18:54,381 INFO L435 NwaCegarLoop]: 1592 mSDtfsCounter, 1488 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:54,381 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1677 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:18:54,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4605 states. [2024-11-24 00:18:54,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4605 to 4603. [2024-11-24 00:18:54,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4603 states, 4601 states have (on average 1.5516192132145186) internal successors, (7139), 4602 states have internal predecessors, (7139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:54,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4603 states to 4603 states and 7139 transitions. [2024-11-24 00:18:54,533 INFO L78 Accepts]: Start accepts. Automaton has 4603 states and 7139 transitions. Word has length 59 [2024-11-24 00:18:54,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:54,533 INFO L471 AbstractCegarLoop]: Abstraction has 4603 states and 7139 transitions. [2024-11-24 00:18:54,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:54,533 INFO L276 IsEmpty]: Start isEmpty. Operand 4603 states and 7139 transitions. [2024-11-24 00:18:54,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-24 00:18:54,536 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:54,536 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:54,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 00:18:54,536 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:54,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:54,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1793062525, now seen corresponding path program 1 times [2024-11-24 00:18:54,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:54,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232027523] [2024-11-24 00:18:54,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:54,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:54,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:54,743 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 00:18:54,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:54,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232027523] [2024-11-24 00:18:54,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232027523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:54,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:54,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:18:54,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889257526] [2024-11-24 00:18:54,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:54,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:18:54,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:54,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:18:54,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:18:54,745 INFO L87 Difference]: Start difference. First operand 4603 states and 7139 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:55,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:55,248 INFO L93 Difference]: Finished difference Result 19671 states and 28409 transitions. [2024-11-24 00:18:55,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:18:55,248 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-11-24 00:18:55,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:55,298 INFO L225 Difference]: With dead ends: 19671 [2024-11-24 00:18:55,298 INFO L226 Difference]: Without dead ends: 17493 [2024-11-24 00:18:55,304 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:18:55,305 INFO L435 NwaCegarLoop]: 1609 mSDtfsCounter, 6314 mSDsluCounter, 2098 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6314 SdHoareTripleChecker+Valid, 3707 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:55,305 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6314 Valid, 3707 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:18:55,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17493 states. [2024-11-24 00:18:55,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17493 to 7227. [2024-11-24 00:18:55,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7227 states, 7225 states have (on average 1.4952249134948097) internal successors, (10803), 7226 states have internal predecessors, (10803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:55,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7227 states to 7227 states and 10803 transitions. [2024-11-24 00:18:55,637 INFO L78 Accepts]: Start accepts. Automaton has 7227 states and 10803 transitions. Word has length 79 [2024-11-24 00:18:55,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:55,637 INFO L471 AbstractCegarLoop]: Abstraction has 7227 states and 10803 transitions. [2024-11-24 00:18:55,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:55,638 INFO L276 IsEmpty]: Start isEmpty. Operand 7227 states and 10803 transitions. [2024-11-24 00:18:55,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-24 00:18:55,641 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:55,641 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:55,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 00:18:55,642 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:55,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:55,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1529206141, now seen corresponding path program 1 times [2024-11-24 00:18:55,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:55,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280932404] [2024-11-24 00:18:55,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:55,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:55,837 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-24 00:18:55,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:55,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280932404] [2024-11-24 00:18:55,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280932404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:55,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:55,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:18:55,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404231481] [2024-11-24 00:18:55,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:55,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:18:55,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:55,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:18:55,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:18:55,839 INFO L87 Difference]: Start difference. First operand 7227 states and 10803 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:56,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:56,374 INFO L93 Difference]: Finished difference Result 22727 states and 32697 transitions. [2024-11-24 00:18:56,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:18:56,375 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-11-24 00:18:56,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:56,423 INFO L225 Difference]: With dead ends: 22727 [2024-11-24 00:18:56,423 INFO L226 Difference]: Without dead ends: 19669 [2024-11-24 00:18:56,431 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:18:56,432 INFO L435 NwaCegarLoop]: 1608 mSDtfsCounter, 6314 mSDsluCounter, 2087 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6314 SdHoareTripleChecker+Valid, 3695 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:56,433 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6314 Valid, 3695 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:18:56,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19669 states. [2024-11-24 00:18:56,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19669 to 11371. [2024-11-24 00:18:56,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11371 states, 11369 states have (on average 1.45826369953382) internal successors, (16579), 11370 states have internal predecessors, (16579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:56,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11371 states to 11371 states and 16579 transitions. [2024-11-24 00:18:56,950 INFO L78 Accepts]: Start accepts. Automaton has 11371 states and 16579 transitions. Word has length 79 [2024-11-24 00:18:56,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:56,950 INFO L471 AbstractCegarLoop]: Abstraction has 11371 states and 16579 transitions. [2024-11-24 00:18:56,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:56,951 INFO L276 IsEmpty]: Start isEmpty. Operand 11371 states and 16579 transitions. [2024-11-24 00:18:56,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-24 00:18:56,953 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:56,954 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:56,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 00:18:56,955 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:56,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:56,955 INFO L85 PathProgramCache]: Analyzing trace with hash -290944125, now seen corresponding path program 1 times [2024-11-24 00:18:56,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:56,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441590622] [2024-11-24 00:18:56,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:56,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:57,156 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-24 00:18:57,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:57,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441590622] [2024-11-24 00:18:57,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441590622] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:57,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:57,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:18:57,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183606843] [2024-11-24 00:18:57,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:57,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:18:57,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:57,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:18:57,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:18:57,158 INFO L87 Difference]: Start difference. First operand 11371 states and 16579 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:57,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:57,797 INFO L93 Difference]: Finished difference Result 25783 states and 36969 transitions. [2024-11-24 00:18:57,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:18:57,798 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-11-24 00:18:57,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:57,852 INFO L225 Difference]: With dead ends: 25783 [2024-11-24 00:18:57,852 INFO L226 Difference]: Without dead ends: 22725 [2024-11-24 00:18:57,862 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:18:57,865 INFO L435 NwaCegarLoop]: 1606 mSDtfsCounter, 6337 mSDsluCounter, 2054 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6337 SdHoareTripleChecker+Valid, 3660 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:57,866 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6337 Valid, 3660 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:18:57,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22725 states. [2024-11-24 00:18:58,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22725 to 14427. [2024-11-24 00:18:58,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14427 states, 14425 states have (on average 1.445476603119584) internal successors, (20851), 14426 states have internal predecessors, (20851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:58,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14427 states to 14427 states and 20851 transitions. [2024-11-24 00:18:58,647 INFO L78 Accepts]: Start accepts. Automaton has 14427 states and 20851 transitions. Word has length 79 [2024-11-24 00:18:58,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:18:58,647 INFO L471 AbstractCegarLoop]: Abstraction has 14427 states and 20851 transitions. [2024-11-24 00:18:58,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:58,647 INFO L276 IsEmpty]: Start isEmpty. Operand 14427 states and 20851 transitions. [2024-11-24 00:18:58,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-24 00:18:58,651 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:18:58,651 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:18:58,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 00:18:58,652 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:18:58,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:18:58,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1788554371, now seen corresponding path program 1 times [2024-11-24 00:18:58,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:18:58,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125376056] [2024-11-24 00:18:58,653 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:18:58,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:18:58,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:18:58,925 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-24 00:18:58,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:58,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125376056] [2024-11-24 00:18:58,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125376056] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:18:58,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:18:58,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:18:58,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170020170] [2024-11-24 00:18:58,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:18:58,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:18:58,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:58,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:18:58,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:18:58,929 INFO L87 Difference]: Start difference. First operand 14427 states and 20851 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:18:59,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:18:59,697 INFO L93 Difference]: Finished difference Result 28839 states and 41241 transitions. [2024-11-24 00:18:59,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:18:59,698 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-11-24 00:18:59,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:18:59,763 INFO L225 Difference]: With dead ends: 28839 [2024-11-24 00:18:59,763 INFO L226 Difference]: Without dead ends: 25781 [2024-11-24 00:18:59,774 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:18:59,775 INFO L435 NwaCegarLoop]: 1604 mSDtfsCounter, 6376 mSDsluCounter, 2048 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6376 SdHoareTripleChecker+Valid, 3652 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:18:59,775 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6376 Valid, 3652 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:18:59,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25781 states. [2024-11-24 00:19:00,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25781 to 17483. [2024-11-24 00:19:00,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17483 states, 17481 states have (on average 1.4371603455179909) internal successors, (25123), 17482 states have internal predecessors, (25123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:00,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17483 states to 17483 states and 25123 transitions. [2024-11-24 00:19:00,423 INFO L78 Accepts]: Start accepts. Automaton has 17483 states and 25123 transitions. Word has length 79 [2024-11-24 00:19:00,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:19:00,423 INFO L471 AbstractCegarLoop]: Abstraction has 17483 states and 25123 transitions. [2024-11-24 00:19:00,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:00,424 INFO L276 IsEmpty]: Start isEmpty. Operand 17483 states and 25123 transitions. [2024-11-24 00:19:00,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-24 00:19:00,426 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:19:00,427 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:19:00,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-24 00:19:00,427 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:19:00,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:19:00,428 INFO L85 PathProgramCache]: Analyzing trace with hash -725480061, now seen corresponding path program 1 times [2024-11-24 00:19:00,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:19:00,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307074748] [2024-11-24 00:19:00,428 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:00,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:19:00,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:00,623 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-24 00:19:00,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:19:00,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307074748] [2024-11-24 00:19:00,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307074748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:19:00,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:19:00,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:19:00,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329610836] [2024-11-24 00:19:00,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:19:00,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:19:00,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:19:00,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:19:00,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:19:00,625 INFO L87 Difference]: Start difference. First operand 17483 states and 25123 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:01,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:19:01,369 INFO L93 Difference]: Finished difference Result 31895 states and 45513 transitions. [2024-11-24 00:19:01,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:19:01,369 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-11-24 00:19:01,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:19:01,444 INFO L225 Difference]: With dead ends: 31895 [2024-11-24 00:19:01,444 INFO L226 Difference]: Without dead ends: 28837 [2024-11-24 00:19:01,456 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:19:01,457 INFO L435 NwaCegarLoop]: 1603 mSDtfsCounter, 6334 mSDsluCounter, 2085 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6334 SdHoareTripleChecker+Valid, 3688 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:19:01,457 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6334 Valid, 3688 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:19:01,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28837 states. [2024-11-24 00:19:02,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28837 to 20539. [2024-11-24 00:19:02,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20539 states, 20537 states have (on average 1.4313190826313482) internal successors, (29395), 20538 states have internal predecessors, (29395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:02,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20539 states to 20539 states and 29395 transitions. [2024-11-24 00:19:02,237 INFO L78 Accepts]: Start accepts. Automaton has 20539 states and 29395 transitions. Word has length 79 [2024-11-24 00:19:02,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:19:02,238 INFO L471 AbstractCegarLoop]: Abstraction has 20539 states and 29395 transitions. [2024-11-24 00:19:02,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:02,238 INFO L276 IsEmpty]: Start isEmpty. Operand 20539 states and 29395 transitions. [2024-11-24 00:19:02,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-24 00:19:02,242 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:19:02,242 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:19:02,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-24 00:19:02,243 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:19:02,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:19:02,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1265022664, now seen corresponding path program 1 times [2024-11-24 00:19:02,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:19:02,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210910639] [2024-11-24 00:19:02,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:02,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:19:02,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:02,380 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:02,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:19:02,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210910639] [2024-11-24 00:19:02,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210910639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:19:02,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:19:02,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:19:02,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702865003] [2024-11-24 00:19:02,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:19:02,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:19:02,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:19:02,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:19:02,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:19:02,384 INFO L87 Difference]: Start difference. First operand 20539 states and 29395 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:02,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:19:02,845 INFO L93 Difference]: Finished difference Result 39535 states and 55973 transitions. [2024-11-24 00:19:02,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:19:02,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-24 00:19:02,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:19:02,887 INFO L225 Difference]: With dead ends: 39535 [2024-11-24 00:19:02,887 INFO L226 Difference]: Without dead ends: 20541 [2024-11-24 00:19:02,905 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:19:02,906 INFO L435 NwaCegarLoop]: 1579 mSDtfsCounter, 45 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3111 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:19:02,906 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3111 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:19:03,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20541 states. [2024-11-24 00:19:03,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20541 to 20539. [2024-11-24 00:19:03,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20539 states, 20537 states have (on average 1.416906071967668) internal successors, (29099), 20538 states have internal predecessors, (29099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:03,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20539 states to 20539 states and 29099 transitions. [2024-11-24 00:19:03,551 INFO L78 Accepts]: Start accepts. Automaton has 20539 states and 29099 transitions. Word has length 80 [2024-11-24 00:19:03,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:19:03,551 INFO L471 AbstractCegarLoop]: Abstraction has 20539 states and 29099 transitions. [2024-11-24 00:19:03,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:03,552 INFO L276 IsEmpty]: Start isEmpty. Operand 20539 states and 29099 transitions. [2024-11-24 00:19:03,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-24 00:19:03,554 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:19:03,554 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:19:03,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-24 00:19:03,555 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:19:03,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:19:03,555 INFO L85 PathProgramCache]: Analyzing trace with hash -2037489509, now seen corresponding path program 1 times [2024-11-24 00:19:03,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:19:03,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309648282] [2024-11-24 00:19:03,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:03,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:19:03,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:03,683 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:03,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:19:03,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309648282] [2024-11-24 00:19:03,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309648282] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:19:03,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:19:03,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:19:03,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242075275] [2024-11-24 00:19:03,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:19:03,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:19:03,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:19:03,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:19:03,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:19:03,686 INFO L87 Difference]: Start difference. First operand 20539 states and 29099 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:03,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:19:03,905 INFO L93 Difference]: Finished difference Result 27635 states and 39002 transitions. [2024-11-24 00:19:03,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:19:03,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-11-24 00:19:03,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:19:03,921 INFO L225 Difference]: With dead ends: 27635 [2024-11-24 00:19:03,921 INFO L226 Difference]: Without dead ends: 8641 [2024-11-24 00:19:03,938 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:19:03,939 INFO L435 NwaCegarLoop]: 1577 mSDtfsCounter, 39 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3108 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:19:03,939 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3108 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:19:03,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8641 states. [2024-11-24 00:19:04,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8641 to 8632. [2024-11-24 00:19:04,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8632 states, 8630 states have (on average 1.4609501738122828) internal successors, (12608), 8631 states have internal predecessors, (12608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:04,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8632 states to 8632 states and 12608 transitions. [2024-11-24 00:19:04,186 INFO L78 Accepts]: Start accepts. Automaton has 8632 states and 12608 transitions. Word has length 81 [2024-11-24 00:19:04,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:19:04,187 INFO L471 AbstractCegarLoop]: Abstraction has 8632 states and 12608 transitions. [2024-11-24 00:19:04,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:04,187 INFO L276 IsEmpty]: Start isEmpty. Operand 8632 states and 12608 transitions. [2024-11-24 00:19:04,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-24 00:19:04,189 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:19:04,189 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:19:04,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-24 00:19:04,190 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:19:04,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:19:04,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1483523354, now seen corresponding path program 1 times [2024-11-24 00:19:04,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:19:04,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923295106] [2024-11-24 00:19:04,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:04,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:19:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:04,351 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:04,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:19:04,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923295106] [2024-11-24 00:19:04,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923295106] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:19:04,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:19:04,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:19:04,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752671203] [2024-11-24 00:19:04,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:19:04,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:19:04,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:19:04,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:19:04,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:19:04,353 INFO L87 Difference]: Start difference. First operand 8632 states and 12608 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:04,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:19:04,517 INFO L93 Difference]: Finished difference Result 12172 states and 17498 transitions. [2024-11-24 00:19:04,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:19:04,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-11-24 00:19:04,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:19:04,528 INFO L225 Difference]: With dead ends: 12172 [2024-11-24 00:19:04,528 INFO L226 Difference]: Without dead ends: 5098 [2024-11-24 00:19:04,537 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:19:04,538 INFO L435 NwaCegarLoop]: 1571 mSDtfsCounter, 41 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3087 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:19:04,539 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3087 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:19:04,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5098 states. [2024-11-24 00:19:04,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5098 to 5096. [2024-11-24 00:19:04,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5096 states, 5094 states have (on average 1.5053003533568905) internal successors, (7668), 5095 states have internal predecessors, (7668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:04,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5096 states to 5096 states and 7668 transitions. [2024-11-24 00:19:04,735 INFO L78 Accepts]: Start accepts. Automaton has 5096 states and 7668 transitions. Word has length 82 [2024-11-24 00:19:04,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:19:04,735 INFO L471 AbstractCegarLoop]: Abstraction has 5096 states and 7668 transitions. [2024-11-24 00:19:04,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:04,736 INFO L276 IsEmpty]: Start isEmpty. Operand 5096 states and 7668 transitions. [2024-11-24 00:19:04,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-24 00:19:04,738 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:19:04,739 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:19:04,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-24 00:19:04,740 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:19:04,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:19:04,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1068531220, now seen corresponding path program 1 times [2024-11-24 00:19:04,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:19:04,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000365447] [2024-11-24 00:19:04,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:04,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:19:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:04,897 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:04,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:19:04,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000365447] [2024-11-24 00:19:04,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000365447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:19:04,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:19:04,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:19:04,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536687666] [2024-11-24 00:19:04,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:19:04,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:19:04,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:19:04,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:19:04,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:19:04,899 INFO L87 Difference]: Start difference. First operand 5096 states and 7668 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:05,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:19:05,004 INFO L93 Difference]: Finished difference Result 6868 states and 10088 transitions. [2024-11-24 00:19:05,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:19:05,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2024-11-24 00:19:05,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:19:05,013 INFO L225 Difference]: With dead ends: 6868 [2024-11-24 00:19:05,013 INFO L226 Difference]: Without dead ends: 3330 [2024-11-24 00:19:05,017 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:19:05,018 INFO L435 NwaCegarLoop]: 1564 mSDtfsCounter, 38 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 3072 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:19:05,018 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 3072 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:19:05,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3330 states. [2024-11-24 00:19:05,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3330 to 3328. [2024-11-24 00:19:05,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3328 states, 3326 states have (on average 1.570655441972339) internal successors, (5224), 3327 states have internal predecessors, (5224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:05,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3328 states to 3328 states and 5224 transitions. [2024-11-24 00:19:05,141 INFO L78 Accepts]: Start accepts. Automaton has 3328 states and 5224 transitions. Word has length 84 [2024-11-24 00:19:05,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:19:05,143 INFO L471 AbstractCegarLoop]: Abstraction has 3328 states and 5224 transitions. [2024-11-24 00:19:05,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:05,143 INFO L276 IsEmpty]: Start isEmpty. Operand 3328 states and 5224 transitions. [2024-11-24 00:19:05,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-24 00:19:05,145 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:19:05,145 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:19:05,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-24 00:19:05,145 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:19:05,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:19:05,146 INFO L85 PathProgramCache]: Analyzing trace with hash -2111828674, now seen corresponding path program 1 times [2024-11-24 00:19:05,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:19:05,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867502780] [2024-11-24 00:19:05,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:05,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:19:05,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:05,310 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:05,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:19:05,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867502780] [2024-11-24 00:19:05,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867502780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:19:05,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:19:05,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:19:05,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609200345] [2024-11-24 00:19:05,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:19:05,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:19:05,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:19:05,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:19:05,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:19:05,313 INFO L87 Difference]: Start difference. First operand 3328 states and 5224 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:05,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:19:05,384 INFO L93 Difference]: Finished difference Result 4216 states and 6422 transitions. [2024-11-24 00:19:05,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:19:05,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-11-24 00:19:05,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:19:05,392 INFO L225 Difference]: With dead ends: 4216 [2024-11-24 00:19:05,392 INFO L226 Difference]: Without dead ends: 2446 [2024-11-24 00:19:05,395 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:19:05,397 INFO L435 NwaCegarLoop]: 1557 mSDtfsCounter, 35 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3057 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:19:05,398 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3057 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:19:05,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2446 states. [2024-11-24 00:19:05,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2446 to 2444. [2024-11-24 00:19:05,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2444 states, 2442 states have (on average 1.6441441441441442) internal successors, (4015), 2443 states have internal predecessors, (4015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:05,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2444 states to 2444 states and 4015 transitions. [2024-11-24 00:19:05,479 INFO L78 Accepts]: Start accepts. Automaton has 2444 states and 4015 transitions. Word has length 86 [2024-11-24 00:19:05,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:19:05,480 INFO L471 AbstractCegarLoop]: Abstraction has 2444 states and 4015 transitions. [2024-11-24 00:19:05,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:05,480 INFO L276 IsEmpty]: Start isEmpty. Operand 2444 states and 4015 transitions. [2024-11-24 00:19:05,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-24 00:19:05,482 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:19:05,483 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:19:05,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-24 00:19:05,483 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:19:05,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:19:05,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1630042352, now seen corresponding path program 1 times [2024-11-24 00:19:05,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:19:05,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996869825] [2024-11-24 00:19:05,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:05,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:19:05,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:06,337 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:06,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:19:06,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996869825] [2024-11-24 00:19:06,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996869825] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:19:06,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084447288] [2024-11-24 00:19:06,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:06,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:19:06,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:19:06,341 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:19:06,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:19:06,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:06,545 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-24 00:19:06,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:19:07,439 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:07,439 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:19:08,937 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:08,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084447288] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:19:08,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:19:08,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-24 00:19:08,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692797909] [2024-11-24 00:19:08,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:19:08,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-24 00:19:08,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:19:08,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-24 00:19:08,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2024-11-24 00:19:08,941 INFO L87 Difference]: Start difference. First operand 2444 states and 4015 transitions. Second operand has 25 states, 25 states have (on average 8.72) internal successors, (218), 24 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:11,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:19:11,519 INFO L93 Difference]: Finished difference Result 6150 states and 8988 transitions. [2024-11-24 00:19:11,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-24 00:19:11,520 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.72) internal successors, (218), 24 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2024-11-24 00:19:11,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:19:11,527 INFO L225 Difference]: With dead ends: 6150 [2024-11-24 00:19:11,528 INFO L226 Difference]: Without dead ends: 5264 [2024-11-24 00:19:11,531 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=576, Invalid=2180, Unknown=0, NotChecked=0, Total=2756 [2024-11-24 00:19:11,532 INFO L435 NwaCegarLoop]: 1524 mSDtfsCounter, 24988 mSDsluCounter, 5263 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24988 SdHoareTripleChecker+Valid, 6787 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:19:11,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24988 Valid, 6787 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 00:19:11,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5264 states. [2024-11-24 00:19:11,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5264 to 5200. [2024-11-24 00:19:11,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5200 states, 5198 states have (on average 1.4651789149672951) internal successors, (7616), 5199 states have internal predecessors, (7616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:11,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5200 states to 5200 states and 7616 transitions. [2024-11-24 00:19:11,689 INFO L78 Accepts]: Start accepts. Automaton has 5200 states and 7616 transitions. Word has length 88 [2024-11-24 00:19:11,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:19:11,690 INFO L471 AbstractCegarLoop]: Abstraction has 5200 states and 7616 transitions. [2024-11-24 00:19:11,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.72) internal successors, (218), 24 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:11,690 INFO L276 IsEmpty]: Start isEmpty. Operand 5200 states and 7616 transitions. [2024-11-24 00:19:11,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-24 00:19:11,692 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:19:11,692 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:19:11,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 00:19:11,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:19:11,897 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:19:11,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:19:11,897 INFO L85 PathProgramCache]: Analyzing trace with hash 861674437, now seen corresponding path program 1 times [2024-11-24 00:19:11,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:19:11,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327648050] [2024-11-24 00:19:11,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:11,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:19:11,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:12,541 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:12,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:19:12,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327648050] [2024-11-24 00:19:12,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327648050] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:19:12,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610185587] [2024-11-24 00:19:12,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:12,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:19:12,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:19:12,544 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:19:12,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:19:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:12,697 INFO L256 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-24 00:19:12,700 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:19:13,328 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:13,329 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:19:14,911 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:14,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610185587] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:19:14,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:19:14,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-24 00:19:14,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638218453] [2024-11-24 00:19:14,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:19:14,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-24 00:19:14,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:19:14,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-24 00:19:14,916 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2024-11-24 00:19:14,916 INFO L87 Difference]: Start difference. First operand 5200 states and 7616 transitions. Second operand has 21 states, 21 states have (on average 9.857142857142858) internal successors, (207), 20 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:15,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:19:15,721 INFO L93 Difference]: Finished difference Result 12798 states and 17655 transitions. [2024-11-24 00:19:15,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 00:19:15,721 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 9.857142857142858) internal successors, (207), 20 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2024-11-24 00:19:15,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:19:15,732 INFO L225 Difference]: With dead ends: 12798 [2024-11-24 00:19:15,732 INFO L226 Difference]: Without dead ends: 9156 [2024-11-24 00:19:15,736 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=215, Invalid=597, Unknown=0, NotChecked=0, Total=812 [2024-11-24 00:19:15,737 INFO L435 NwaCegarLoop]: 1513 mSDtfsCounter, 10637 mSDsluCounter, 4900 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10637 SdHoareTripleChecker+Valid, 6413 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:19:15,737 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10637 Valid, 6413 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:19:15,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9156 states. [2024-11-24 00:19:15,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9156 to 9048. [2024-11-24 00:19:15,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9048 states, 9046 states have (on average 1.3880168030068538) internal successors, (12556), 9047 states have internal predecessors, (12556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:16,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9048 states to 9048 states and 12556 transitions. [2024-11-24 00:19:16,004 INFO L78 Accepts]: Start accepts. Automaton has 9048 states and 12556 transitions. Word has length 89 [2024-11-24 00:19:16,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:19:16,004 INFO L471 AbstractCegarLoop]: Abstraction has 9048 states and 12556 transitions. [2024-11-24 00:19:16,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.857142857142858) internal successors, (207), 20 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:16,005 INFO L276 IsEmpty]: Start isEmpty. Operand 9048 states and 12556 transitions. [2024-11-24 00:19:16,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-24 00:19:16,007 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:19:16,007 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:19:16,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 00:19:16,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-24 00:19:16,211 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:19:16,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:19:16,212 INFO L85 PathProgramCache]: Analyzing trace with hash 713310802, now seen corresponding path program 1 times [2024-11-24 00:19:16,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:19:16,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500587946] [2024-11-24 00:19:16,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:16,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:19:16,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:16,665 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:16,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:19:16,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500587946] [2024-11-24 00:19:16,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500587946] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:19:16,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059450587] [2024-11-24 00:19:16,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:16,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:19:16,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:19:16,668 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:19:16,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:19:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:16,844 INFO L256 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-24 00:19:16,847 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:19:17,990 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:17,991 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:19:19,931 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:19,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059450587] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:19:19,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:19:19,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 28 [2024-11-24 00:19:19,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453995881] [2024-11-24 00:19:19,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:19:19,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-24 00:19:19,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:19:19,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-24 00:19:19,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2024-11-24 00:19:19,933 INFO L87 Difference]: Start difference. First operand 9048 states and 12556 transitions. Second operand has 28 states, 28 states have (on average 9.071428571428571) internal successors, (254), 28 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:23,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:19:23,093 INFO L93 Difference]: Finished difference Result 23414 states and 31323 transitions. [2024-11-24 00:19:23,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-24 00:19:23,093 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.071428571428571) internal successors, (254), 28 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2024-11-24 00:19:23,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:19:23,181 INFO L225 Difference]: With dead ends: 23414 [2024-11-24 00:19:23,182 INFO L226 Difference]: Without dead ends: 15924 [2024-11-24 00:19:23,185 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=758, Invalid=3024, Unknown=0, NotChecked=0, Total=3782 [2024-11-24 00:19:23,186 INFO L435 NwaCegarLoop]: 1505 mSDtfsCounter, 15361 mSDsluCounter, 10691 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15361 SdHoareTripleChecker+Valid, 12196 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:19:23,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15361 Valid, 12196 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 00:19:23,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15924 states. [2024-11-24 00:19:23,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15924 to 15912. [2024-11-24 00:19:23,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15912 states, 15910 states have (on average 1.3340037712130735) internal successors, (21224), 15911 states have internal predecessors, (21224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:23,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15912 states to 15912 states and 21224 transitions. [2024-11-24 00:19:23,762 INFO L78 Accepts]: Start accepts. Automaton has 15912 states and 21224 transitions. Word has length 90 [2024-11-24 00:19:23,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:19:23,763 INFO L471 AbstractCegarLoop]: Abstraction has 15912 states and 21224 transitions. [2024-11-24 00:19:23,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.071428571428571) internal successors, (254), 28 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:23,763 INFO L276 IsEmpty]: Start isEmpty. Operand 15912 states and 21224 transitions. [2024-11-24 00:19:23,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-24 00:19:23,766 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:19:23,766 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:19:23,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 00:19:23,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-24 00:19:23,971 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:19:23,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:19:23,976 INFO L85 PathProgramCache]: Analyzing trace with hash 157562109, now seen corresponding path program 1 times [2024-11-24 00:19:23,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:19:23,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680793071] [2024-11-24 00:19:23,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:23,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:19:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:24,444 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:24,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:19:24,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680793071] [2024-11-24 00:19:24,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680793071] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:19:24,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848963741] [2024-11-24 00:19:24,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:24,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:19:24,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:19:24,447 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:19:24,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:19:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:24,623 INFO L256 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-24 00:19:24,626 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:19:25,500 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:25,500 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:19:26,718 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:26,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848963741] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:19:26,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:19:26,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2024-11-24 00:19:26,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356997374] [2024-11-24 00:19:26,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:19:26,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-24 00:19:26,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:19:26,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-24 00:19:26,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2024-11-24 00:19:26,721 INFO L87 Difference]: Start difference. First operand 15912 states and 21224 transitions. Second operand has 32 states, 32 states have (on average 7.40625) internal successors, (237), 32 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:32,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:19:32,618 INFO L93 Difference]: Finished difference Result 65286 states and 84839 transitions. [2024-11-24 00:19:32,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-24 00:19:32,619 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.40625) internal successors, (237), 32 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2024-11-24 00:19:32,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:19:32,657 INFO L225 Difference]: With dead ends: 65286 [2024-11-24 00:19:32,657 INFO L226 Difference]: Without dead ends: 50932 [2024-11-24 00:19:32,667 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2150 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1452, Invalid=6738, Unknown=0, NotChecked=0, Total=8190 [2024-11-24 00:19:32,668 INFO L435 NwaCegarLoop]: 1555 mSDtfsCounter, 16076 mSDsluCounter, 14478 mSDsCounter, 0 mSdLazyCounter, 1595 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16076 SdHoareTripleChecker+Valid, 16033 SdHoareTripleChecker+Invalid, 1640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:19:32,668 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16076 Valid, 16033 Invalid, 1640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1595 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-24 00:19:32,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50932 states. [2024-11-24 00:19:33,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50932 to 28824. [2024-11-24 00:19:33,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28824 states, 28822 states have (on average 1.295676913468878) internal successors, (37344), 28823 states have internal predecessors, (37344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:34,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28824 states to 28824 states and 37344 transitions. [2024-11-24 00:19:34,031 INFO L78 Accepts]: Start accepts. Automaton has 28824 states and 37344 transitions. Word has length 91 [2024-11-24 00:19:34,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:19:34,031 INFO L471 AbstractCegarLoop]: Abstraction has 28824 states and 37344 transitions. [2024-11-24 00:19:34,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.40625) internal successors, (237), 32 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:34,031 INFO L276 IsEmpty]: Start isEmpty. Operand 28824 states and 37344 transitions. [2024-11-24 00:19:34,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-24 00:19:34,035 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:19:34,035 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:19:34,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 00:19:34,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:19:34,240 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:19:34,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:19:34,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1785072166, now seen corresponding path program 1 times [2024-11-24 00:19:34,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:19:34,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068091254] [2024-11-24 00:19:34,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:34,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:19:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:35,657 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:35,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:19:35,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068091254] [2024-11-24 00:19:35,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068091254] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:19:35,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195697010] [2024-11-24 00:19:35,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:35,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:19:35,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:19:35,660 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:19:35,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 00:19:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:35,810 INFO L256 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-24 00:19:35,817 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:19:37,264 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:37,264 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:19:38,344 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:38,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195697010] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:19:38,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:19:38,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 28 [2024-11-24 00:19:38,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261485728] [2024-11-24 00:19:38,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:19:38,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-24 00:19:38,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:19:38,346 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-24 00:19:38,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2024-11-24 00:19:38,346 INFO L87 Difference]: Start difference. First operand 28824 states and 37344 transitions. Second operand has 28 states, 28 states have (on average 8.285714285714286) internal successors, (232), 28 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:40,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:19:40,785 INFO L93 Difference]: Finished difference Result 36542 states and 47395 transitions. [2024-11-24 00:19:40,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 00:19:40,787 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 8.285714285714286) internal successors, (232), 28 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2024-11-24 00:19:40,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:19:40,877 INFO L225 Difference]: With dead ends: 36542 [2024-11-24 00:19:40,878 INFO L226 Difference]: Without dead ends: 26556 [2024-11-24 00:19:40,887 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=343, Invalid=1297, Unknown=0, NotChecked=0, Total=1640 [2024-11-24 00:19:40,888 INFO L435 NwaCegarLoop]: 1519 mSDtfsCounter, 14195 mSDsluCounter, 14920 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14195 SdHoareTripleChecker+Valid, 16439 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:19:40,889 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14195 Valid, 16439 Invalid, 508 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 00:19:40,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26556 states. [2024-11-24 00:19:41,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26556 to 26552. [2024-11-24 00:19:42,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26552 states, 26550 states have (on average 1.296873822975518) internal successors, (34432), 26551 states have internal predecessors, (34432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:42,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26552 states to 26552 states and 34432 transitions. [2024-11-24 00:19:42,045 INFO L78 Accepts]: Start accepts. Automaton has 26552 states and 34432 transitions. Word has length 92 [2024-11-24 00:19:42,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:19:42,046 INFO L471 AbstractCegarLoop]: Abstraction has 26552 states and 34432 transitions. [2024-11-24 00:19:42,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 8.285714285714286) internal successors, (232), 28 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:42,046 INFO L276 IsEmpty]: Start isEmpty. Operand 26552 states and 34432 transitions. [2024-11-24 00:19:42,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-24 00:19:42,048 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:19:42,049 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:19:42,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 00:19:42,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-24 00:19:42,250 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:19:42,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:19:42,251 INFO L85 PathProgramCache]: Analyzing trace with hash -54854566, now seen corresponding path program 1 times [2024-11-24 00:19:42,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:19:42,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657828267] [2024-11-24 00:19:42,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:42,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:19:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:43,610 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:43,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:19:43,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657828267] [2024-11-24 00:19:43,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657828267] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:19:43,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188824235] [2024-11-24 00:19:43,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:19:43,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:19:43,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:19:43,615 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:19:43,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 00:19:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:19:43,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-24 00:19:43,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:19:48,142 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:48,143 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:19:53,257 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:19:53,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188824235] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:19:53,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:19:53,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 26, 20] total 54 [2024-11-24 00:19:53,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986207465] [2024-11-24 00:19:53,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:19:53,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-24 00:19:53,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:19:53,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-24 00:19:53,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=2495, Unknown=0, NotChecked=0, Total=2862 [2024-11-24 00:19:53,260 INFO L87 Difference]: Start difference. First operand 26552 states and 34432 transitions. Second operand has 54 states, 54 states have (on average 4.814814814814815) internal successors, (260), 54 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:27,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:20:27,259 INFO L93 Difference]: Finished difference Result 48942 states and 62995 transitions. [2024-11-24 00:20:27,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2024-11-24 00:20:27,259 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 4.814814814814815) internal successors, (260), 54 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2024-11-24 00:20:27,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:20:27,308 INFO L225 Difference]: With dead ends: 48942 [2024-11-24 00:20:27,308 INFO L226 Difference]: Without dead ends: 38828 [2024-11-24 00:20:27,324 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8516 ImplicationChecksByTransitivity, 30.9s TimeCoverageRelationStatistics Valid=5154, Invalid=22568, Unknown=0, NotChecked=0, Total=27722 [2024-11-24 00:20:27,325 INFO L435 NwaCegarLoop]: 1590 mSDtfsCounter, 24284 mSDsluCounter, 27510 mSDsCounter, 0 mSdLazyCounter, 4041 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24284 SdHoareTripleChecker+Valid, 29100 SdHoareTripleChecker+Invalid, 4149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 4041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:20:27,326 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24284 Valid, 29100 Invalid, 4149 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [108 Valid, 4041 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-24 00:20:27,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38828 states. [2024-11-24 00:20:28,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38828 to 23672. [2024-11-24 00:20:28,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23672 states, 23670 states have (on average 1.2974228981833544) internal successors, (30710), 23671 states have internal predecessors, (30710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:28,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23672 states to 23672 states and 30710 transitions. [2024-11-24 00:20:28,879 INFO L78 Accepts]: Start accepts. Automaton has 23672 states and 30710 transitions. Word has length 92 [2024-11-24 00:20:28,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:20:28,879 INFO L471 AbstractCegarLoop]: Abstraction has 23672 states and 30710 transitions. [2024-11-24 00:20:28,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 4.814814814814815) internal successors, (260), 54 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:28,880 INFO L276 IsEmpty]: Start isEmpty. Operand 23672 states and 30710 transitions. [2024-11-24 00:20:28,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-24 00:20:28,882 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:20:28,882 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:20:28,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-24 00:20:29,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-24 00:20:29,087 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:20:29,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:29,088 INFO L85 PathProgramCache]: Analyzing trace with hash 222504259, now seen corresponding path program 1 times [2024-11-24 00:20:29,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:29,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101933232] [2024-11-24 00:20:29,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:29,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:29,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:29,275 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 00:20:29,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:29,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101933232] [2024-11-24 00:20:29,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101933232] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:20:29,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609466878] [2024-11-24 00:20:29,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:29,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:20:29,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:20:29,279 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:20:29,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 00:20:29,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:29,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-24 00:20:29,464 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:20:29,617 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 00:20:29,617 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:20:30,074 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 00:20:30,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609466878] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:20:30,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:20:30,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2024-11-24 00:20:30,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640433899] [2024-11-24 00:20:30,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:20:30,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 00:20:30,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:30,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 00:20:30,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:20:30,077 INFO L87 Difference]: Start difference. First operand 23672 states and 30710 transitions. Second operand has 9 states, 9 states have (on average 25.444444444444443) internal successors, (229), 9 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:33,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:20:33,106 INFO L93 Difference]: Finished difference Result 60340 states and 75883 transitions. [2024-11-24 00:20:33,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:20:33,107 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 25.444444444444443) internal successors, (229), 9 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-11-24 00:20:33,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:20:33,147 INFO L225 Difference]: With dead ends: 60340 [2024-11-24 00:20:33,147 INFO L226 Difference]: Without dead ends: 38226 [2024-11-24 00:20:33,162 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:20:33,162 INFO L435 NwaCegarLoop]: 1539 mSDtfsCounter, 3005 mSDsluCounter, 3273 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3005 SdHoareTripleChecker+Valid, 4812 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:20:33,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3005 Valid, 4812 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:20:33,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38226 states. [2024-11-24 00:20:35,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38226 to 36330. [2024-11-24 00:20:35,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36330 states, 36328 states have (on average 1.238328561990751) internal successors, (44986), 36329 states have internal predecessors, (44986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:35,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36330 states to 36330 states and 44986 transitions. [2024-11-24 00:20:35,715 INFO L78 Accepts]: Start accepts. Automaton has 36330 states and 44986 transitions. Word has length 93 [2024-11-24 00:20:35,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:20:35,716 INFO L471 AbstractCegarLoop]: Abstraction has 36330 states and 44986 transitions. [2024-11-24 00:20:35,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.444444444444443) internal successors, (229), 9 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:20:35,716 INFO L276 IsEmpty]: Start isEmpty. Operand 36330 states and 44986 transitions. [2024-11-24 00:20:35,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-24 00:20:35,718 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:20:35,718 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:20:35,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 00:20:35,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-24 00:20:35,919 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:20:35,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:35,919 INFO L85 PathProgramCache]: Analyzing trace with hash 309781839, now seen corresponding path program 1 times [2024-11-24 00:20:35,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:35,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593771336] [2024-11-24 00:20:35,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:35,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:35,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:39,785 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:39,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:39,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593771336] [2024-11-24 00:20:39,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593771336] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:20:39,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281285394] [2024-11-24 00:20:39,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:39,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:20:39,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:20:39,788 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:20:39,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 00:20:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:39,979 INFO L256 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-24 00:20:39,982 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:20:50,348 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:50,349 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:21:05,955 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:05,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281285394] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:21:05,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:21:05,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 35, 34] total 96 [2024-11-24 00:21:05,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134379023] [2024-11-24 00:21:05,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:21:05,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-11-24 00:21:05,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:05,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-11-24 00:21:05,961 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=841, Invalid=8279, Unknown=0, NotChecked=0, Total=9120 [2024-11-24 00:21:05,962 INFO L87 Difference]: Start difference. First operand 36330 states and 44986 transitions. Second operand has 96 states, 96 states have (on average 2.6979166666666665) internal successors, (259), 96 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:28:54,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:28:54,506 INFO L93 Difference]: Finished difference Result 134284 states and 165122 transitions. [2024-11-24 00:28:54,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 594 states. [2024-11-24 00:28:54,506 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.6979166666666665) internal successors, (259), 96 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-11-24 00:28:54,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:28:54,643 INFO L225 Difference]: With dead ends: 134284 [2024-11-24 00:28:54,643 INFO L226 Difference]: Without dead ends: 132444 [2024-11-24 00:28:54,686 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 800 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 679 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207612 ImplicationChecksByTransitivity, 439.3s TimeCoverageRelationStatistics Valid=46101, Invalid=416979, Unknown=0, NotChecked=0, Total=463080 [2024-11-24 00:28:54,686 INFO L435 NwaCegarLoop]: 1767 mSDtfsCounter, 37133 mSDsluCounter, 35821 mSDsCounter, 0 mSdLazyCounter, 18963 mSolverCounterSat, 590 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37133 SdHoareTripleChecker+Valid, 37588 SdHoareTripleChecker+Invalid, 19553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 590 IncrementalHoareTripleChecker+Valid, 18963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:28:54,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37133 Valid, 37588 Invalid, 19553 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [590 Valid, 18963 Invalid, 0 Unknown, 0 Unchecked, 30.5s Time] [2024-11-24 00:28:54,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132444 states. [2024-11-24 00:28:57,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132444 to 40563. [2024-11-24 00:28:57,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40563 states, 40561 states have (on average 1.2396144079287985) internal successors, (50280), 40562 states have internal predecessors, (50280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:28:57,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40563 states to 40563 states and 50280 transitions. [2024-11-24 00:28:58,001 INFO L78 Accepts]: Start accepts. Automaton has 40563 states and 50280 transitions. Word has length 93 [2024-11-24 00:28:58,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:28:58,001 INFO L471 AbstractCegarLoop]: Abstraction has 40563 states and 50280 transitions. [2024-11-24 00:28:58,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 2.6979166666666665) internal successors, (259), 96 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:28:58,001 INFO L276 IsEmpty]: Start isEmpty. Operand 40563 states and 50280 transitions. [2024-11-24 00:28:58,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-24 00:28:58,003 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:28:58,003 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:28:58,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-24 00:28:58,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:28:58,204 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:28:58,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:28:58,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1576882104, now seen corresponding path program 1 times [2024-11-24 00:28:58,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:28:58,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219233000] [2024-11-24 00:28:58,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:28:58,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:28:58,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:28:59,563 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:28:59,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:28:59,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219233000] [2024-11-24 00:28:59,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219233000] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:28:59,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103695759] [2024-11-24 00:28:59,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:28:59,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:28:59,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:28:59,566 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:28:59,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 00:28:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:28:59,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-24 00:28:59,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:29:08,598 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:29:08,598 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:29:17,364 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:29:17,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103695759] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:29:17,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:29:17,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 33, 28] total 67 [2024-11-24 00:29:17,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171764078] [2024-11-24 00:29:17,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:29:17,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-24 00:29:17,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:29:17,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-24 00:29:17,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=602, Invalid=3820, Unknown=0, NotChecked=0, Total=4422 [2024-11-24 00:29:17,366 INFO L87 Difference]: Start difference. First operand 40563 states and 50280 transitions. Second operand has 67 states, 67 states have (on average 3.6417910447761193) internal successors, (244), 67 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:31:29,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:31:29,792 INFO L93 Difference]: Finished difference Result 129922 states and 159683 transitions. [2024-11-24 00:31:29,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 316 states. [2024-11-24 00:31:29,792 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 3.6417910447761193) internal successors, (244), 67 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-11-24 00:31:29,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:31:29,889 INFO L225 Difference]: With dead ends: 129922 [2024-11-24 00:31:29,889 INFO L226 Difference]: Without dead ends: 112599 [2024-11-24 00:31:29,913 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 378 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65364 ImplicationChecksByTransitivity, 115.1s TimeCoverageRelationStatistics Valid=22208, Invalid=121812, Unknown=0, NotChecked=0, Total=144020 [2024-11-24 00:31:29,914 INFO L435 NwaCegarLoop]: 1610 mSDtfsCounter, 35312 mSDsluCounter, 25780 mSDsCounter, 0 mSdLazyCounter, 8678 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35312 SdHoareTripleChecker+Valid, 27390 SdHoareTripleChecker+Invalid, 8839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 8678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:31:29,914 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35312 Valid, 27390 Invalid, 8839 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [161 Valid, 8678 Invalid, 0 Unknown, 0 Unchecked, 13.8s Time] [2024-11-24 00:31:29,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112599 states. [2024-11-24 00:31:33,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112599 to 34933. [2024-11-24 00:31:33,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34933 states, 34931 states have (on average 1.2474020211273653) internal successors, (43573), 34932 states have internal predecessors, (43573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:31:33,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34933 states to 34933 states and 43573 transitions. [2024-11-24 00:31:33,081 INFO L78 Accepts]: Start accepts. Automaton has 34933 states and 43573 transitions. Word has length 94 [2024-11-24 00:31:33,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:31:33,082 INFO L471 AbstractCegarLoop]: Abstraction has 34933 states and 43573 transitions. [2024-11-24 00:31:33,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 3.6417910447761193) internal successors, (244), 67 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:31:33,082 INFO L276 IsEmpty]: Start isEmpty. Operand 34933 states and 43573 transitions. [2024-11-24 00:31:33,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-24 00:31:33,084 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:31:33,084 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:31:33,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-24 00:31:33,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:31:33,285 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:31:33,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:31:33,285 INFO L85 PathProgramCache]: Analyzing trace with hash -60253833, now seen corresponding path program 1 times [2024-11-24 00:31:33,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:31:33,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949194224] [2024-11-24 00:31:33,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:31:33,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:31:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:31:33,573 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:31:33,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:31:33,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949194224] [2024-11-24 00:31:33,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949194224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:31:33,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:31:33,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:31:33,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81180544] [2024-11-24 00:31:33,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:31:33,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:31:33,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:31:33,575 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:31:33,575 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:31:33,576 INFO L87 Difference]: Start difference. First operand 34933 states and 43573 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:31:43,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:31:43,118 INFO L93 Difference]: Finished difference Result 38690 states and 50463 transitions. [2024-11-24 00:31:43,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:31:43,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2024-11-24 00:31:43,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:31:43,159 INFO L225 Difference]: With dead ends: 38690 [2024-11-24 00:31:43,159 INFO L226 Difference]: Without dead ends: 37186 [2024-11-24 00:31:43,165 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:31:43,166 INFO L435 NwaCegarLoop]: 799 mSDtfsCounter, 2369 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 4805 mSolverCounterSat, 1138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2369 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 5943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1138 IncrementalHoareTripleChecker+Valid, 4805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:31:43,166 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2369 Valid, 819 Invalid, 5943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1138 Valid, 4805 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2024-11-24 00:31:43,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37186 states. [2024-11-24 00:31:46,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37186 to 37186. [2024-11-24 00:31:46,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37186 states, 37184 states have (on average 1.241447934595525) internal successors, (46162), 37185 states have internal predecessors, (46162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:31:46,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37186 states to 37186 states and 46162 transitions. [2024-11-24 00:31:46,128 INFO L78 Accepts]: Start accepts. Automaton has 37186 states and 46162 transitions. Word has length 99 [2024-11-24 00:31:46,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:31:46,128 INFO L471 AbstractCegarLoop]: Abstraction has 37186 states and 46162 transitions. [2024-11-24 00:31:46,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:31:46,129 INFO L276 IsEmpty]: Start isEmpty. Operand 37186 states and 46162 transitions. [2024-11-24 00:31:46,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-24 00:31:46,130 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:31:46,130 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:31:46,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-24 00:31:46,131 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:31:46,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:31:46,132 INFO L85 PathProgramCache]: Analyzing trace with hash 810977532, now seen corresponding path program 1 times [2024-11-24 00:31:46,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:31:46,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058698443] [2024-11-24 00:31:46,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:31:46,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:31:46,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:31:46,210 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-24 00:31:46,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:31:46,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058698443] [2024-11-24 00:31:46,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058698443] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:31:46,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:31:46,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:31:46,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865780260] [2024-11-24 00:31:46,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:31:46,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:31:46,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:31:46,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:31:46,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:31:46,212 INFO L87 Difference]: Start difference. First operand 37186 states and 46162 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:31:53,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:31:53,084 INFO L93 Difference]: Finished difference Result 41694 states and 53545 transitions. [2024-11-24 00:31:53,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:31:53,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2024-11-24 00:31:53,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:31:53,137 INFO L225 Difference]: With dead ends: 41694 [2024-11-24 00:31:53,138 INFO L226 Difference]: Without dead ends: 38688 [2024-11-24 00:31:53,150 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:31:53,151 INFO L435 NwaCegarLoop]: 572 mSDtfsCounter, 830 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:31:53,151 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 579 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-24 00:31:53,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38688 states. [2024-11-24 00:31:56,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38688 to 38688. [2024-11-24 00:31:56,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38688 states, 38686 states have (on average 1.2429302590084268) internal successors, (48084), 38687 states have internal predecessors, (48084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:31:56,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38688 states to 38688 states and 48084 transitions. [2024-11-24 00:31:56,533 INFO L78 Accepts]: Start accepts. Automaton has 38688 states and 48084 transitions. Word has length 101 [2024-11-24 00:31:56,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:31:56,533 INFO L471 AbstractCegarLoop]: Abstraction has 38688 states and 48084 transitions. [2024-11-24 00:31:56,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:31:56,533 INFO L276 IsEmpty]: Start isEmpty. Operand 38688 states and 48084 transitions. [2024-11-24 00:31:56,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-24 00:31:56,539 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:31:56,539 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:31:56,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-24 00:31:56,539 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:31:56,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:31:56,540 INFO L85 PathProgramCache]: Analyzing trace with hash 368039186, now seen corresponding path program 1 times [2024-11-24 00:31:56,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:31:56,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282020953] [2024-11-24 00:31:56,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:31:56,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:31:56,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:31:57,554 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 48 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:31:57,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:31:57,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282020953] [2024-11-24 00:31:57,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282020953] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:31:57,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445563845] [2024-11-24 00:31:57,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:31:57,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:31:57,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:31:57,558 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:31:57,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 00:31:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:31:57,781 INFO L256 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-24 00:31:57,784 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:31:58,877 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 43 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:31:58,877 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:32:01,643 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 40 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:32:01,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445563845] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:32:01,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:32:01,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 31 [2024-11-24 00:32:01,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407691346] [2024-11-24 00:32:01,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:32:01,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-24 00:32:01,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:32:01,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-24 00:32:01,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2024-11-24 00:32:01,645 INFO L87 Difference]: Start difference. First operand 38688 states and 48084 transitions. Second operand has 32 states, 32 states have (on average 12.375) internal successors, (396), 31 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:32:08,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:32:08,624 INFO L93 Difference]: Finished difference Result 71408 states and 88640 transitions. [2024-11-24 00:32:08,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-24 00:32:08,625 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 12.375) internal successors, (396), 31 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2024-11-24 00:32:08,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:32:08,675 INFO L225 Difference]: With dead ends: 71408 [2024-11-24 00:32:08,675 INFO L226 Difference]: Without dead ends: 45552 [2024-11-24 00:32:08,692 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1278 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1274, Invalid=5206, Unknown=0, NotChecked=0, Total=6480 [2024-11-24 00:32:08,693 INFO L435 NwaCegarLoop]: 1539 mSDtfsCounter, 20415 mSDsluCounter, 15817 mSDsCounter, 0 mSdLazyCounter, 1385 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20415 SdHoareTripleChecker+Valid, 17356 SdHoareTripleChecker+Invalid, 1422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:32:08,693 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20415 Valid, 17356 Invalid, 1422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1385 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-24 00:32:08,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45552 states. [2024-11-24 00:32:12,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45552 to 38688. [2024-11-24 00:32:12,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38688 states, 38686 states have (on average 1.2292819107687536) internal successors, (47556), 38687 states have internal predecessors, (47556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:32:12,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38688 states to 38688 states and 47556 transitions. [2024-11-24 00:32:12,283 INFO L78 Accepts]: Start accepts. Automaton has 38688 states and 47556 transitions. Word has length 146 [2024-11-24 00:32:12,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:32:12,283 INFO L471 AbstractCegarLoop]: Abstraction has 38688 states and 47556 transitions. [2024-11-24 00:32:12,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 12.375) internal successors, (396), 31 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:32:12,284 INFO L276 IsEmpty]: Start isEmpty. Operand 38688 states and 47556 transitions. [2024-11-24 00:32:12,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-24 00:32:12,292 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:32:12,293 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:32:12,306 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-24 00:32:12,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-24 00:32:12,493 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:32:12,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:32:12,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1623666308, now seen corresponding path program 1 times [2024-11-24 00:32:12,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:32:12,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177613450] [2024-11-24 00:32:12,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:32:12,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:32:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:32:13,925 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 41 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:32:13,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:32:13,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177613450] [2024-11-24 00:32:13,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177613450] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:32:13,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77292542] [2024-11-24 00:32:13,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:32:13,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:32:13,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:32:13,928 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:32:13,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a5512f-97e2-4dfe-bb85-d4232c3857ba/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 00:32:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:32:14,185 INFO L256 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-24 00:32:14,188 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:32:15,678 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 23 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:32:15,678 INFO L312 TraceCheckSpWp]: Computing backward predicates...