./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 25ff40e1cab2a460fc960bb835e8a5bb98b4f09095caa25e5ce8f52bf887c901 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 08:24:21,852 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 08:24:21,904 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 08:24:21,908 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 08:24:21,908 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 08:24:21,928 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 08:24:21,928 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 08:24:21,928 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 08:24:21,929 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 08:24:21,929 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 08:24:21,929 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 08:24:21,929 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 08:24:21,929 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 08:24:21,929 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 08:24:21,930 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 08:24:21,930 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 08:24:21,930 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 08:24:21,930 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 08:24:21,930 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 08:24:21,930 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 08:24:21,930 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 08:24:21,930 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 08:24:21,930 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 08:24:21,930 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 08:24:21,930 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 08:24:21,931 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 08:24:21,931 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 08:24:21,931 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 08:24:21,931 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 08:24:21,931 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:24:21,931 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:24:21,931 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:24:21,931 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:24:21,931 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 08:24:21,932 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:24:21,932 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:24:21,932 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:24:21,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:24:21,932 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 08:24:21,932 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 08:24:21,932 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 08:24:21,932 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 08:24:21,932 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 08:24:21,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 08:24:21,933 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 08:24:21,933 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 08:24:21,933 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 08:24:21,933 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 08:24:21,933 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_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25ff40e1cab2a460fc960bb835e8a5bb98b4f09095caa25e5ce8f52bf887c901 [2024-12-02 08:24:22,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 08:24:22,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 08:24:22,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 08:24:22,139 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 08:24:22,140 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 08:24:22,141 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c [2024-12-02 08:24:24,711 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/data/b482983b9/dc38ae2a6e2d4b62b1a5ef5e1d6dec17/FLAG15934fa1f [2024-12-02 08:24:24,922 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 08:24:24,923 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c [2024-12-02 08:24:24,930 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/data/b482983b9/dc38ae2a6e2d4b62b1a5ef5e1d6dec17/FLAG15934fa1f [2024-12-02 08:24:25,301 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/data/b482983b9/dc38ae2a6e2d4b62b1a5ef5e1d6dec17 [2024-12-02 08:24:25,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 08:24:25,304 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 08:24:25,305 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 08:24:25,305 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 08:24:25,308 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 08:24:25,309 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:24:25" (1/1) ... [2024-12-02 08:24:25,309 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@176be582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:24:25, skipping insertion in model container [2024-12-02 08:24:25,309 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:24:25" (1/1) ... [2024-12-02 08:24:25,325 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 08:24:25,497 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_6a8a15bc-837e-4f42-8960-97e836f4ce92/sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c[5947,5960] [2024-12-02 08:24:25,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:24:25,508 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 08:24:25,541 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_6a8a15bc-837e-4f42-8960-97e836f4ce92/sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c[5947,5960] [2024-12-02 08:24:25,542 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:24:25,556 INFO L204 MainTranslator]: Completed translation [2024-12-02 08:24:25,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:24:25 WrapperNode [2024-12-02 08:24:25,556 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 08:24:25,557 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 08:24:25,557 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 08:24:25,557 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 08:24:25,563 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:24:25" (1/1) ... [2024-12-02 08:24:25,569 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:24:25" (1/1) ... [2024-12-02 08:24:25,589 INFO L138 Inliner]: procedures = 21, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 221 [2024-12-02 08:24:25,589 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 08:24:25,590 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 08:24:25,590 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 08:24:25,590 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 08:24:25,598 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:24:25" (1/1) ... [2024-12-02 08:24:25,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:24:25" (1/1) ... [2024-12-02 08:24:25,600 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:24:25" (1/1) ... [2024-12-02 08:24:25,612 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 08:24:25,612 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:24:25" (1/1) ... [2024-12-02 08:24:25,613 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:24:25" (1/1) ... [2024-12-02 08:24:25,617 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:24:25" (1/1) ... [2024-12-02 08:24:25,618 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:24:25" (1/1) ... [2024-12-02 08:24:25,622 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:24:25" (1/1) ... [2024-12-02 08:24:25,623 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:24:25" (1/1) ... [2024-12-02 08:24:25,624 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:24:25" (1/1) ... [2024-12-02 08:24:25,626 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 08:24:25,627 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 08:24:25,627 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 08:24:25,627 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 08:24:25,627 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:24:25" (1/1) ... [2024-12-02 08:24:25,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:24:25,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:24:25,656 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 08:24:25,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 08:24:25,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 08:24:25,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 08:24:25,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 08:24:25,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 08:24:25,740 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 08:24:25,741 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 08:24:25,983 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2024-12-02 08:24:25,983 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 08:24:25,991 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 08:24:25,991 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-02 08:24:25,992 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:24:25 BoogieIcfgContainer [2024-12-02 08:24:25,992 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 08:24:25,993 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 08:24:25,994 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 08:24:25,997 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 08:24:25,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:24:25" (1/3) ... [2024-12-02 08:24:25,998 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@344dd0b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:24:25, skipping insertion in model container [2024-12-02 08:24:25,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:24:25" (2/3) ... [2024-12-02 08:24:25,998 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@344dd0b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:24:25, skipping insertion in model container [2024-12-02 08:24:25,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:24:25" (3/3) ... [2024-12-02 08:24:25,999 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals.c [2024-12-02 08:24:26,011 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 08:24:26,012 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.3.ufo.BOUNDED-6.pals.c that has 1 procedures, 57 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 08:24:26,054 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:24:26,063 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;@5dbaaf31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:24:26,063 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 08:24:26,067 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 55 states have (on average 1.690909090909091) internal successors, (93), 56 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:26,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-12-02 08:24:26,071 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:24:26,072 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] [2024-12-02 08:24:26,072 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:24:26,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:24:26,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1016771987, now seen corresponding path program 1 times [2024-12-02 08:24:26,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:24:26,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372798850] [2024-12-02 08:24:26,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:24:26,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:24:26,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:24:26,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:24:26,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:24:26,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372798850] [2024-12-02 08:24:26,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372798850] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:24:26,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:24:26,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:24:26,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413515585] [2024-12-02 08:24:26,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:24:26,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 08:24:26,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:24:26,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 08:24:26,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 08:24:26,263 INFO L87 Difference]: Start difference. First operand has 57 states, 55 states have (on average 1.690909090909091) internal successors, (93), 56 states have internal predecessors, (93), 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 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:26,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:24:26,278 INFO L93 Difference]: Finished difference Result 93 states and 148 transitions. [2024-12-02 08:24:26,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 08:24:26,280 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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 20 [2024-12-02 08:24:26,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:24:26,285 INFO L225 Difference]: With dead ends: 93 [2024-12-02 08:24:26,285 INFO L226 Difference]: Without dead ends: 53 [2024-12-02 08:24:26,287 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 [2024-12-02 08:24:26,289 INFO L435 NwaCegarLoop]: 90 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, 90 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:24:26,290 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:24:26,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-12-02 08:24:26,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-12-02 08:24:26,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.6538461538461537) internal successors, (86), 52 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) [2024-12-02 08:24:26,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 86 transitions. [2024-12-02 08:24:26,314 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 86 transitions. Word has length 20 [2024-12-02 08:24:26,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:24:26,314 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 86 transitions. [2024-12-02 08:24:26,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:26,315 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 86 transitions. [2024-12-02 08:24:26,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-12-02 08:24:26,315 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:24:26,316 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] [2024-12-02 08:24:26,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 08:24:26,316 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:24:26,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:24:26,316 INFO L85 PathProgramCache]: Analyzing trace with hash -263091691, now seen corresponding path program 1 times [2024-12-02 08:24:26,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:24:26,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091972927] [2024-12-02 08:24:26,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:24:26,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:24:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:24:26,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:24:26,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:24:26,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091972927] [2024-12-02 08:24:26,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091972927] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:24:26,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:24:26,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:24:26,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71521812] [2024-12-02 08:24:26,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:24:26,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:24:26,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:24:26,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:24:26,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:24:26,474 INFO L87 Difference]: Start difference. First operand 53 states and 86 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:26,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:24:26,543 INFO L93 Difference]: Finished difference Result 119 states and 186 transitions. [2024-12-02 08:24:26,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:24:26,544 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 20 [2024-12-02 08:24:26,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:24:26,545 INFO L225 Difference]: With dead ends: 119 [2024-12-02 08:24:26,545 INFO L226 Difference]: Without dead ends: 84 [2024-12-02 08:24:26,545 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 [2024-12-02 08:24:26,546 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 47 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:24:26,546 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 306 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:24:26,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-12-02 08:24:26,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 53. [2024-12-02 08:24:26,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 52 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:26,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 70 transitions. [2024-12-02 08:24:26,552 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 70 transitions. Word has length 20 [2024-12-02 08:24:26,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:24:26,552 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 70 transitions. [2024-12-02 08:24:26,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:26,552 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 70 transitions. [2024-12-02 08:24:26,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-12-02 08:24:26,553 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:24:26,553 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] [2024-12-02 08:24:26,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 08:24:26,553 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:24:26,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:24:26,554 INFO L85 PathProgramCache]: Analyzing trace with hash -668548648, now seen corresponding path program 1 times [2024-12-02 08:24:26,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:24:26,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737514817] [2024-12-02 08:24:26,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:24:26,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:24:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:24:26,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:24:26,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:24:26,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737514817] [2024-12-02 08:24:26,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737514817] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:24:26,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:24:26,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:24:26,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60617726] [2024-12-02 08:24:26,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:24:26,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:24:26,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:24:26,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:24:26,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:24:26,690 INFO L87 Difference]: Start difference. First operand 53 states and 70 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:26,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:24:26,820 INFO L93 Difference]: Finished difference Result 239 states and 358 transitions. [2024-12-02 08:24:26,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 08:24:26,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 35 [2024-12-02 08:24:26,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:24:26,822 INFO L225 Difference]: With dead ends: 239 [2024-12-02 08:24:26,822 INFO L226 Difference]: Without dead ends: 208 [2024-12-02 08:24:26,822 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:24:26,823 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 276 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:24:26,824 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 436 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:24:26,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-12-02 08:24:26,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 82. [2024-12-02 08:24:26,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.4197530864197532) internal successors, (115), 81 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:26,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 115 transitions. [2024-12-02 08:24:26,832 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 115 transitions. Word has length 35 [2024-12-02 08:24:26,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:24:26,832 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 115 transitions. [2024-12-02 08:24:26,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:26,832 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 115 transitions. [2024-12-02 08:24:26,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-12-02 08:24:26,833 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:24:26,833 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] [2024-12-02 08:24:26,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 08:24:26,833 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:24:26,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:24:26,833 INFO L85 PathProgramCache]: Analyzing trace with hash 354142280, now seen corresponding path program 1 times [2024-12-02 08:24:26,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:24:26,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144472208] [2024-12-02 08:24:26,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:24:26,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:24:26,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:24:26,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:24:26,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:24:26,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144472208] [2024-12-02 08:24:26,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144472208] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:24:26,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:24:26,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:24:26,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35901810] [2024-12-02 08:24:26,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:24:26,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:24:26,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:24:26,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:24:26,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:24:26,923 INFO L87 Difference]: Start difference. First operand 82 states and 115 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:26,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:24:26,944 INFO L93 Difference]: Finished difference Result 191 states and 282 transitions. [2024-12-02 08:24:26,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:24:26,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 37 [2024-12-02 08:24:26,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:24:26,946 INFO L225 Difference]: With dead ends: 191 [2024-12-02 08:24:26,946 INFO L226 Difference]: Without dead ends: 131 [2024-12-02 08:24:26,946 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:24:26,947 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 27 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 111 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 [2024-12-02 08:24:26,947 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 111 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:24:26,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-12-02 08:24:26,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2024-12-02 08:24:26,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.4453125) internal successors, (185), 128 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:26,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 185 transitions. [2024-12-02 08:24:26,957 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 185 transitions. Word has length 37 [2024-12-02 08:24:26,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:24:26,957 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 185 transitions. [2024-12-02 08:24:26,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:26,958 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 185 transitions. [2024-12-02 08:24:26,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-12-02 08:24:26,959 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:24:26,959 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] [2024-12-02 08:24:26,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 08:24:26,959 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:24:26,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:24:26,960 INFO L85 PathProgramCache]: Analyzing trace with hash 420635792, now seen corresponding path program 1 times [2024-12-02 08:24:26,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:24:26,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874890999] [2024-12-02 08:24:26,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:24:26,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:24:26,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:24:27,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:24:27,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:24:27,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874890999] [2024-12-02 08:24:27,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874890999] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:24:27,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:24:27,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:24:27,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848414301] [2024-12-02 08:24:27,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:24:27,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:24:27,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:24:27,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:24:27,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:24:27,125 INFO L87 Difference]: Start difference. First operand 129 states and 185 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:27,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:24:27,192 INFO L93 Difference]: Finished difference Result 238 states and 349 transitions. [2024-12-02 08:24:27,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:24:27,192 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 37 [2024-12-02 08:24:27,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:24:27,193 INFO L225 Difference]: With dead ends: 238 [2024-12-02 08:24:27,193 INFO L226 Difference]: Without dead ends: 131 [2024-12-02 08:24:27,194 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:24:27,194 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 36 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:24:27,195 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 197 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:24:27,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-12-02 08:24:27,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2024-12-02 08:24:27,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.4296875) internal successors, (183), 128 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:27,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 183 transitions. [2024-12-02 08:24:27,203 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 183 transitions. Word has length 37 [2024-12-02 08:24:27,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:24:27,203 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 183 transitions. [2024-12-02 08:24:27,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:27,204 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 183 transitions. [2024-12-02 08:24:27,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-12-02 08:24:27,204 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:24:27,205 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] [2024-12-02 08:24:27,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 08:24:27,205 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:24:27,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:24:27,205 INFO L85 PathProgramCache]: Analyzing trace with hash -259915559, now seen corresponding path program 1 times [2024-12-02 08:24:27,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:24:27,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792480896] [2024-12-02 08:24:27,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:24:27,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:24:27,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:24:27,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:24:27,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:24:27,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792480896] [2024-12-02 08:24:27,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792480896] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:24:27,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:24:27,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 08:24:27,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670896237] [2024-12-02 08:24:27,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:24:27,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:24:27,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:24:27,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:24:27,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:24:27,388 INFO L87 Difference]: Start difference. First operand 129 states and 183 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:27,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:24:27,432 INFO L93 Difference]: Finished difference Result 137 states and 192 transitions. [2024-12-02 08:24:27,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 08:24:27,433 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 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 38 [2024-12-02 08:24:27,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:24:27,434 INFO L225 Difference]: With dead ends: 137 [2024-12-02 08:24:27,434 INFO L226 Difference]: Without dead ends: 135 [2024-12-02 08:24:27,434 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 [2024-12-02 08:24:27,435 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:24:27,435 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 432 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:24:27,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-12-02 08:24:27,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2024-12-02 08:24:27,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.4029850746268657) internal successors, (188), 134 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:27,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 188 transitions. [2024-12-02 08:24:27,442 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 188 transitions. Word has length 38 [2024-12-02 08:24:27,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:24:27,443 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 188 transitions. [2024-12-02 08:24:27,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:27,443 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 188 transitions. [2024-12-02 08:24:27,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-12-02 08:24:27,444 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:24:27,444 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] [2024-12-02 08:24:27,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 08:24:27,444 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:24:27,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:24:27,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1886850160, now seen corresponding path program 1 times [2024-12-02 08:24:27,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:24:27,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137951549] [2024-12-02 08:24:27,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:24:27,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:24:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:24:27,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:24:27,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:24:27,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137951549] [2024-12-02 08:24:27,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137951549] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:24:27,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:24:27,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:24:27,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027811657] [2024-12-02 08:24:27,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:24:27,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:24:27,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:24:27,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:24:27,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:24:27,498 INFO L87 Difference]: Start difference. First operand 135 states and 188 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:27,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:24:27,513 INFO L93 Difference]: Finished difference Result 262 states and 374 transitions. [2024-12-02 08:24:27,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:24:27,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2024-12-02 08:24:27,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:24:27,515 INFO L225 Difference]: With dead ends: 262 [2024-12-02 08:24:27,515 INFO L226 Difference]: Without dead ends: 196 [2024-12-02 08:24:27,515 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:24:27,516 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 37 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 151 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 [2024-12-02 08:24:27,517 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 151 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:24:27,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-12-02 08:24:27,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 194. [2024-12-02 08:24:27,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.4093264248704662) internal successors, (272), 193 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:27,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 272 transitions. [2024-12-02 08:24:27,526 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 272 transitions. Word has length 39 [2024-12-02 08:24:27,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:24:27,526 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 272 transitions. [2024-12-02 08:24:27,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:27,526 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 272 transitions. [2024-12-02 08:24:27,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-12-02 08:24:27,527 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:24:27,527 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] [2024-12-02 08:24:27,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 08:24:27,527 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:24:27,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:24:27,528 INFO L85 PathProgramCache]: Analyzing trace with hash 192648336, now seen corresponding path program 1 times [2024-12-02 08:24:27,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:24:27,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329971108] [2024-12-02 08:24:27,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:24:27,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:24:27,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:24:27,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:24:27,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:24:27,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329971108] [2024-12-02 08:24:27,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329971108] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:24:27,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:24:27,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:24:27,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356710532] [2024-12-02 08:24:27,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:24:27,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:24:27,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:24:27,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:24:27,577 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:24:27,577 INFO L87 Difference]: Start difference. First operand 194 states and 272 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:27,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:24:27,596 INFO L93 Difference]: Finished difference Result 508 states and 724 transitions. [2024-12-02 08:24:27,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:24:27,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2024-12-02 08:24:27,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:24:27,598 INFO L225 Difference]: With dead ends: 508 [2024-12-02 08:24:27,598 INFO L226 Difference]: Without dead ends: 339 [2024-12-02 08:24:27,599 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:24:27,599 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 35 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 157 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 [2024-12-02 08:24:27,599 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 157 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:24:27,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2024-12-02 08:24:27,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 337. [2024-12-02 08:24:27,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 1.3988095238095237) internal successors, (470), 336 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:27,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 470 transitions. [2024-12-02 08:24:27,614 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 470 transitions. Word has length 39 [2024-12-02 08:24:27,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:24:27,614 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 470 transitions. [2024-12-02 08:24:27,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:27,614 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 470 transitions. [2024-12-02 08:24:27,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-12-02 08:24:27,615 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:24:27,615 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] [2024-12-02 08:24:27,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 08:24:27,615 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:24:27,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:24:27,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1973581200, now seen corresponding path program 1 times [2024-12-02 08:24:27,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:24:27,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328168952] [2024-12-02 08:24:27,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:24:27,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:24:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:24:27,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:24:27,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:24:27,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328168952] [2024-12-02 08:24:27,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328168952] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:24:27,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:24:27,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:24:27,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256396435] [2024-12-02 08:24:27,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:24:27,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:24:27,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:24:27,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:24:27,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:24:27,665 INFO L87 Difference]: Start difference. First operand 337 states and 470 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:27,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:24:27,691 INFO L93 Difference]: Finished difference Result 913 states and 1276 transitions. [2024-12-02 08:24:27,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:24:27,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2024-12-02 08:24:27,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:24:27,694 INFO L225 Difference]: With dead ends: 913 [2024-12-02 08:24:27,694 INFO L226 Difference]: Without dead ends: 601 [2024-12-02 08:24:27,694 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:24:27,695 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 33 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 159 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 [2024-12-02 08:24:27,695 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 159 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:24:27,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2024-12-02 08:24:27,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 599. [2024-12-02 08:24:27,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 598 states have (on average 1.3678929765886287) internal successors, (818), 598 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:27,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 818 transitions. [2024-12-02 08:24:27,719 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 818 transitions. Word has length 39 [2024-12-02 08:24:27,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:24:27,720 INFO L471 AbstractCegarLoop]: Abstraction has 599 states and 818 transitions. [2024-12-02 08:24:27,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:27,720 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 818 transitions. [2024-12-02 08:24:27,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-12-02 08:24:27,721 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:24:27,721 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] [2024-12-02 08:24:27,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 08:24:27,721 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:24:27,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:24:27,722 INFO L85 PathProgramCache]: Analyzing trace with hash 2108144598, now seen corresponding path program 1 times [2024-12-02 08:24:27,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:24:27,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000681415] [2024-12-02 08:24:27,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:24:27,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:24:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:24:27,830 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 08:24:27,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:24:27,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000681415] [2024-12-02 08:24:27,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000681415] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:24:27,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:24:27,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:24:27,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473066808] [2024-12-02 08:24:27,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:24:27,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:24:27,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:24:27,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:24:27,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:24:27,831 INFO L87 Difference]: Start difference. First operand 599 states and 818 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:27,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:24:27,940 INFO L93 Difference]: Finished difference Result 2299 states and 3162 transitions. [2024-12-02 08:24:27,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:24:27,941 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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 [2024-12-02 08:24:27,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:24:27,947 INFO L225 Difference]: With dead ends: 2299 [2024-12-02 08:24:27,948 INFO L226 Difference]: Without dead ends: 1881 [2024-12-02 08:24:27,948 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:24:27,949 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 164 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:24:27,949 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 288 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:24:27,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2024-12-02 08:24:27,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1095. [2024-12-02 08:24:27,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1095 states, 1094 states have (on average 1.3656307129798904) internal successors, (1494), 1094 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:28,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1494 transitions. [2024-12-02 08:24:28,005 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1494 transitions. Word has length 55 [2024-12-02 08:24:28,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:24:28,005 INFO L471 AbstractCegarLoop]: Abstraction has 1095 states and 1494 transitions. [2024-12-02 08:24:28,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:28,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1494 transitions. [2024-12-02 08:24:28,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-12-02 08:24:28,006 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:24:28,007 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] [2024-12-02 08:24:28,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 08:24:28,007 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:24:28,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:24:28,007 INFO L85 PathProgramCache]: Analyzing trace with hash -107324202, now seen corresponding path program 1 times [2024-12-02 08:24:28,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:24:28,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084125343] [2024-12-02 08:24:28,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:24:28,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:24:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:24:28,110 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 08:24:28,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:24:28,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084125343] [2024-12-02 08:24:28,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084125343] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:24:28,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:24:28,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:24:28,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006610746] [2024-12-02 08:24:28,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:24:28,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:24:28,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:24:28,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:24:28,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:24:28,112 INFO L87 Difference]: Start difference. First operand 1095 states and 1494 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:28,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:24:28,237 INFO L93 Difference]: Finished difference Result 2871 states and 3946 transitions. [2024-12-02 08:24:28,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:24:28,238 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 [2024-12-02 08:24:28,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:24:28,245 INFO L225 Difference]: With dead ends: 2871 [2024-12-02 08:24:28,246 INFO L226 Difference]: Without dead ends: 2297 [2024-12-02 08:24:28,247 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:24:28,247 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 164 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:24:28,247 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 284 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:24:28,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2024-12-02 08:24:28,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 1875. [2024-12-02 08:24:28,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1875 states, 1874 states have (on average 1.3628601921024546) internal successors, (2554), 1874 states have internal predecessors, (2554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:28,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1875 states to 1875 states and 2554 transitions. [2024-12-02 08:24:28,332 INFO L78 Accepts]: Start accepts. Automaton has 1875 states and 2554 transitions. Word has length 55 [2024-12-02 08:24:28,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:24:28,332 INFO L471 AbstractCegarLoop]: Abstraction has 1875 states and 2554 transitions. [2024-12-02 08:24:28,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:28,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1875 states and 2554 transitions. [2024-12-02 08:24:28,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-12-02 08:24:28,333 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:24:28,333 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] [2024-12-02 08:24:28,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 08:24:28,334 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:24:28,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:24:28,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1673608662, now seen corresponding path program 1 times [2024-12-02 08:24:28,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:24:28,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598411378] [2024-12-02 08:24:28,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:24:28,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:24:28,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:24:28,438 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 08:24:28,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:24:28,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598411378] [2024-12-02 08:24:28,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598411378] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:24:28,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:24:28,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:24:28,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043225988] [2024-12-02 08:24:28,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:24:28,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:24:28,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:24:28,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:24:28,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:24:28,440 INFO L87 Difference]: Start difference. First operand 1875 states and 2554 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:28,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:24:28,567 INFO L93 Difference]: Finished difference Result 3443 states and 4726 transitions. [2024-12-02 08:24:28,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:24:28,568 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 [2024-12-02 08:24:28,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:24:28,577 INFO L225 Difference]: With dead ends: 3443 [2024-12-02 08:24:28,577 INFO L226 Difference]: Without dead ends: 2869 [2024-12-02 08:24:28,579 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:24:28,579 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 170 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:24:28,579 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 286 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:24:28,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2869 states. [2024-12-02 08:24:28,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2869 to 2447. [2024-12-02 08:24:28,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2447 states, 2446 states have (on average 1.3630417007358953) internal successors, (3334), 2446 states have internal predecessors, (3334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:28,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2447 states to 2447 states and 3334 transitions. [2024-12-02 08:24:28,694 INFO L78 Accepts]: Start accepts. Automaton has 2447 states and 3334 transitions. Word has length 55 [2024-12-02 08:24:28,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:24:28,695 INFO L471 AbstractCegarLoop]: Abstraction has 2447 states and 3334 transitions. [2024-12-02 08:24:28,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:28,695 INFO L276 IsEmpty]: Start isEmpty. Operand 2447 states and 3334 transitions. [2024-12-02 08:24:28,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 08:24:28,696 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:24:28,696 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] [2024-12-02 08:24:28,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 08:24:28,696 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:24:28,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:24:28,697 INFO L85 PathProgramCache]: Analyzing trace with hash 919127620, now seen corresponding path program 1 times [2024-12-02 08:24:28,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:24:28,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891571256] [2024-12-02 08:24:28,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:24:28,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:24:28,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:24:28,802 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:24:28,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:24:28,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891571256] [2024-12-02 08:24:28,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891571256] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:24:28,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:24:28,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:24:28,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336006691] [2024-12-02 08:24:28,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:24:28,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:24:28,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:24:28,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:24:28,803 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:24:28,803 INFO L87 Difference]: Start difference. First operand 2447 states and 3334 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:28,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:24:28,882 INFO L93 Difference]: Finished difference Result 4871 states and 6644 transitions. [2024-12-02 08:24:28,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:24:28,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2024-12-02 08:24:28,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:24:28,890 INFO L225 Difference]: With dead ends: 4871 [2024-12-02 08:24:28,890 INFO L226 Difference]: Without dead ends: 2449 [2024-12-02 08:24:28,893 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:24:28,893 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 29 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 147 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 [2024-12-02 08:24:28,894 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 147 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:24:28,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2449 states. [2024-12-02 08:24:28,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2449 to 2447. [2024-12-02 08:24:28,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2447 states, 2446 states have (on average 1.3426001635322977) internal successors, (3284), 2446 states have internal predecessors, (3284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:28,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2447 states to 2447 states and 3284 transitions. [2024-12-02 08:24:28,985 INFO L78 Accepts]: Start accepts. Automaton has 2447 states and 3284 transitions. Word has length 56 [2024-12-02 08:24:28,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:24:28,986 INFO L471 AbstractCegarLoop]: Abstraction has 2447 states and 3284 transitions. [2024-12-02 08:24:28,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:28,986 INFO L276 IsEmpty]: Start isEmpty. Operand 2447 states and 3284 transitions. [2024-12-02 08:24:28,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-12-02 08:24:28,987 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:24:28,987 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] [2024-12-02 08:24:28,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 08:24:28,987 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:24:28,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:24:28,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1408550898, now seen corresponding path program 1 times [2024-12-02 08:24:28,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:24:28,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508703803] [2024-12-02 08:24:28,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:24:28,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:24:29,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:24:29,040 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:24:29,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:24:29,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508703803] [2024-12-02 08:24:29,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508703803] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:24:29,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:24:29,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:24:29,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393135177] [2024-12-02 08:24:29,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:24:29,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:24:29,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:24:29,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:24:29,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:24:29,041 INFO L87 Difference]: Start difference. First operand 2447 states and 3284 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) [2024-12-02 08:24:29,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:24:29,070 INFO L93 Difference]: Finished difference Result 3403 states and 4581 transitions. [2024-12-02 08:24:29,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:24:29,070 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 [2024-12-02 08:24:29,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:24:29,072 INFO L225 Difference]: With dead ends: 3403 [2024-12-02 08:24:29,072 INFO L226 Difference]: Without dead ends: 981 [2024-12-02 08:24:29,074 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:24:29,074 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 23 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 144 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 [2024-12-02 08:24:29,074 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 144 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:24:29,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2024-12-02 08:24:29,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 972. [2024-12-02 08:24:29,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 1.333676622039135) internal successors, (1295), 971 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:29,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1295 transitions. [2024-12-02 08:24:29,095 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1295 transitions. Word has length 57 [2024-12-02 08:24:29,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:24:29,096 INFO L471 AbstractCegarLoop]: Abstraction has 972 states and 1295 transitions. [2024-12-02 08:24:29,096 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) [2024-12-02 08:24:29,096 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1295 transitions. [2024-12-02 08:24:29,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-12-02 08:24:29,096 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:24:29,096 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] [2024-12-02 08:24:29,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 08:24:29,097 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:24:29,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:24:29,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1062832502, now seen corresponding path program 1 times [2024-12-02 08:24:29,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:24:29,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838857393] [2024-12-02 08:24:29,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:24:29,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:24:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:24:29,158 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:24:29,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:24:29,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838857393] [2024-12-02 08:24:29,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838857393] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:24:29,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:24:29,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:24:29,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563575502] [2024-12-02 08:24:29,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:24:29,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:24:29,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:24:29,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:24:29,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:24:29,159 INFO L87 Difference]: Start difference. First operand 972 states and 1295 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 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) [2024-12-02 08:24:29,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:24:29,177 INFO L93 Difference]: Finished difference Result 1444 states and 1927 transitions. [2024-12-02 08:24:29,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:24:29,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 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 [2024-12-02 08:24:29,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:24:29,179 INFO L225 Difference]: With dead ends: 1444 [2024-12-02 08:24:29,180 INFO L226 Difference]: Without dead ends: 506 [2024-12-02 08:24:29,180 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:24:29,181 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 25 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 123 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 [2024-12-02 08:24:29,181 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 123 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:24:29,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2024-12-02 08:24:29,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 504. [2024-12-02 08:24:29,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 503 states have (on average 1.3041749502982107) internal successors, (656), 503 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:29,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 656 transitions. [2024-12-02 08:24:29,193 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 656 transitions. Word has length 58 [2024-12-02 08:24:29,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:24:29,194 INFO L471 AbstractCegarLoop]: Abstraction has 504 states and 656 transitions. [2024-12-02 08:24:29,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 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) [2024-12-02 08:24:29,194 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 656 transitions. [2024-12-02 08:24:29,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-12-02 08:24:29,194 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:24:29,195 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 08:24:29,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 08:24:29,195 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:24:29,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:24:29,195 INFO L85 PathProgramCache]: Analyzing trace with hash -207437016, now seen corresponding path program 1 times [2024-12-02 08:24:29,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:24:29,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121051782] [2024-12-02 08:24:29,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:24:29,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:24:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:24:29,527 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:24:29,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:24:29,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121051782] [2024-12-02 08:24:29,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121051782] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:24:29,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711405968] [2024-12-02 08:24:29,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:24:29,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:24:29,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:24:29,530 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:24:29,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 08:24:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:24:29,630 INFO L256 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 08:24:29,636 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:24:29,815 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 08:24:29,815 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:24:30,176 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 08:24:30,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711405968] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:24:30,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:24:30,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 4] total 16 [2024-12-02 08:24:30,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451839632] [2024-12-02 08:24:30,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:24:30,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 08:24:30,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:24:30,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 08:24:30,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-12-02 08:24:30,178 INFO L87 Difference]: Start difference. First operand 504 states and 656 transitions. Second operand has 16 states, 16 states have (on average 10.125) internal successors, (162), 16 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:31,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:24:31,211 INFO L93 Difference]: Finished difference Result 2617 states and 3382 transitions. [2024-12-02 08:24:31,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-12-02 08:24:31,211 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.125) internal successors, (162), 16 states have internal predecessors, (162), 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 60 [2024-12-02 08:24:31,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:24:31,217 INFO L225 Difference]: With dead ends: 2617 [2024-12-02 08:24:31,218 INFO L226 Difference]: Without dead ends: 2147 [2024-12-02 08:24:31,219 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=399, Invalid=1323, Unknown=0, NotChecked=0, Total=1722 [2024-12-02 08:24:31,220 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 1164 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:24:31,220 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1164 Valid, 428 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 08:24:31,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2147 states. [2024-12-02 08:24:31,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2147 to 2011. [2024-12-02 08:24:31,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2011 states, 2010 states have (on average 1.2467661691542289) internal successors, (2506), 2010 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:31,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2011 states to 2011 states and 2506 transitions. [2024-12-02 08:24:31,304 INFO L78 Accepts]: Start accepts. Automaton has 2011 states and 2506 transitions. Word has length 60 [2024-12-02 08:24:31,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:24:31,304 INFO L471 AbstractCegarLoop]: Abstraction has 2011 states and 2506 transitions. [2024-12-02 08:24:31,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.125) internal successors, (162), 16 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:31,304 INFO L276 IsEmpty]: Start isEmpty. Operand 2011 states and 2506 transitions. [2024-12-02 08:24:31,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-12-02 08:24:31,305 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:24:31,305 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:24:31,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-12-02 08:24:31,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-02 08:24:31,506 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:24:31,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:24:31,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1137688292, now seen corresponding path program 1 times [2024-12-02 08:24:31,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:24:31,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687426727] [2024-12-02 08:24:31,507 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:24:31,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:24:31,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:24:31,854 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:24:31,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:24:31,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687426727] [2024-12-02 08:24:31,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687426727] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:24:31,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083100478] [2024-12-02 08:24:31,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:24:31,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:24:31,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:24:31,857 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:24:31,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 08:24:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:24:31,953 INFO L256 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 08:24:31,955 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:24:32,729 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:24:32,729 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:24:33,571 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:24:33,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083100478] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:24:33,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:24:33,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 30 [2024-12-02 08:24:33,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748391158] [2024-12-02 08:24:33,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:24:33,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-12-02 08:24:33,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:24:33,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-12-02 08:24:33,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=767, Unknown=0, NotChecked=0, Total=870 [2024-12-02 08:24:33,573 INFO L87 Difference]: Start difference. First operand 2011 states and 2506 transitions. Second operand has 30 states, 30 states have (on average 5.6) internal successors, (168), 30 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:35,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:24:35,947 INFO L93 Difference]: Finished difference Result 9361 states and 11657 transitions. [2024-12-02 08:24:35,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-12-02 08:24:35,948 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.6) internal successors, (168), 30 states have internal predecessors, (168), 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 61 [2024-12-02 08:24:35,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:24:35,962 INFO L225 Difference]: With dead ends: 9361 [2024-12-02 08:24:35,962 INFO L226 Difference]: Without dead ends: 7556 [2024-12-02 08:24:35,966 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=900, Invalid=3930, Unknown=0, NotChecked=0, Total=4830 [2024-12-02 08:24:35,967 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 1473 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 08:24:35,967 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 843 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 08:24:35,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7556 states. [2024-12-02 08:24:36,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7556 to 6504. [2024-12-02 08:24:36,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6504 states, 6503 states have (on average 1.2123635245271414) internal successors, (7884), 6503 states have internal predecessors, (7884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:36,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6504 states to 6504 states and 7884 transitions. [2024-12-02 08:24:36,233 INFO L78 Accepts]: Start accepts. Automaton has 6504 states and 7884 transitions. Word has length 61 [2024-12-02 08:24:36,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:24:36,233 INFO L471 AbstractCegarLoop]: Abstraction has 6504 states and 7884 transitions. [2024-12-02 08:24:36,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.6) internal successors, (168), 30 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:36,233 INFO L276 IsEmpty]: Start isEmpty. Operand 6504 states and 7884 transitions. [2024-12-02 08:24:36,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-02 08:24:36,234 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:24:36,234 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 08:24:36,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 08:24:36,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 08:24:36,435 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:24:36,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:24:36,435 INFO L85 PathProgramCache]: Analyzing trace with hash 580574178, now seen corresponding path program 1 times [2024-12-02 08:24:36,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:24:36,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109150911] [2024-12-02 08:24:36,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:24:36,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:24:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:24:37,052 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:24:37,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:24:37,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109150911] [2024-12-02 08:24:37,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109150911] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:24:37,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455193792] [2024-12-02 08:24:37,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:24:37,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:24:37,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:24:37,054 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:24:37,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 08:24:37,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:24:37,140 INFO L256 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-12-02 08:24:37,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:24:39,931 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:24:39,931 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:24:42,282 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:24:42,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455193792] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:24:42,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:24:42,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 20] total 47 [2024-12-02 08:24:42,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307085557] [2024-12-02 08:24:42,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:24:42,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-12-02 08:24:42,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:24:42,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-12-02 08:24:42,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1917, Unknown=0, NotChecked=0, Total=2162 [2024-12-02 08:24:42,283 INFO L87 Difference]: Start difference. First operand 6504 states and 7884 transitions. Second operand has 47 states, 47 states have (on average 3.5319148936170213) internal successors, (166), 47 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:50,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:24:50,125 INFO L93 Difference]: Finished difference Result 16370 states and 20078 transitions. [2024-12-02 08:24:50,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-12-02 08:24:50,125 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.5319148936170213) internal successors, (166), 47 states have internal predecessors, (166), 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 62 [2024-12-02 08:24:50,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:24:50,145 INFO L225 Difference]: With dead ends: 16370 [2024-12-02 08:24:50,145 INFO L226 Difference]: Without dead ends: 13216 [2024-12-02 08:24:50,149 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5267 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=3282, Invalid=13748, Unknown=0, NotChecked=0, Total=17030 [2024-12-02 08:24:50,150 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 4041 mSDsluCounter, 1253 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4041 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:24:50,150 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4041 Valid, 1336 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1204 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 08:24:50,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13216 states. [2024-12-02 08:24:50,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13216 to 4900. [2024-12-02 08:24:50,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4900 states, 4899 states have (on average 1.2120840987956727) internal successors, (5938), 4899 states have internal predecessors, (5938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:50,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4900 states to 4900 states and 5938 transitions. [2024-12-02 08:24:50,454 INFO L78 Accepts]: Start accepts. Automaton has 4900 states and 5938 transitions. Word has length 62 [2024-12-02 08:24:50,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:24:50,454 INFO L471 AbstractCegarLoop]: Abstraction has 4900 states and 5938 transitions. [2024-12-02 08:24:50,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.5319148936170213) internal successors, (166), 47 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:24:50,455 INFO L276 IsEmpty]: Start isEmpty. Operand 4900 states and 5938 transitions. [2024-12-02 08:24:50,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 08:24:50,455 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:24:50,455 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] [2024-12-02 08:24:50,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 08:24:50,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 08:24:50,656 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:24:50,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:24:50,656 INFO L85 PathProgramCache]: Analyzing trace with hash 2083404890, now seen corresponding path program 1 times [2024-12-02 08:24:50,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:24:50,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251737677] [2024-12-02 08:24:50,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:24:50,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:24:50,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:24:51,407 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:24:51,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:24:51,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251737677] [2024-12-02 08:24:51,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251737677] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:24:51,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930555467] [2024-12-02 08:24:51,407 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:24:51,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:24:51,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:24:51,409 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:24:51,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 08:24:51,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:24:51,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-12-02 08:24:51,530 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:24:54,014 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:24:54,014 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:24:57,255 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:24:57,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930555467] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:24:57,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:24:57,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 23, 18] total 49 [2024-12-02 08:24:57,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347095056] [2024-12-02 08:24:57,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:24:57,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-12-02 08:24:57,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:24:57,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-12-02 08:24:57,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=2037, Unknown=0, NotChecked=0, Total=2352 [2024-12-02 08:24:57,257 INFO L87 Difference]: Start difference. First operand 4900 states and 5938 transitions. Second operand has 49 states, 49 states have (on average 3.4693877551020407) internal successors, (170), 49 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:25:10,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:25:10,246 INFO L93 Difference]: Finished difference Result 7937 states and 9703 transitions. [2024-12-02 08:25:10,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-12-02 08:25:10,247 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.4693877551020407) internal successors, (170), 49 states have internal predecessors, (170), 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 63 [2024-12-02 08:25:10,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:25:10,255 INFO L225 Difference]: With dead ends: 7937 [2024-12-02 08:25:10,255 INFO L226 Difference]: Without dead ends: 4910 [2024-12-02 08:25:10,258 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4160 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=2989, Invalid=12511, Unknown=0, NotChecked=0, Total=15500 [2024-12-02 08:25:10,259 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 1983 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 1410 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1983 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 1498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:25:10,259 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1983 Valid, 1289 Invalid, 1498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1410 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 08:25:10,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4910 states. [2024-12-02 08:25:10,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4910 to 3450. [2024-12-02 08:25:10,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3450 states, 3449 states have (on average 1.2067265874166424) internal successors, (4162), 3449 states have internal predecessors, (4162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:25:10,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3450 states to 3450 states and 4162 transitions. [2024-12-02 08:25:10,402 INFO L78 Accepts]: Start accepts. Automaton has 3450 states and 4162 transitions. Word has length 63 [2024-12-02 08:25:10,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:25:10,403 INFO L471 AbstractCegarLoop]: Abstraction has 3450 states and 4162 transitions. [2024-12-02 08:25:10,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.4693877551020407) internal successors, (170), 49 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:25:10,403 INFO L276 IsEmpty]: Start isEmpty. Operand 3450 states and 4162 transitions. [2024-12-02 08:25:10,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 08:25:10,404 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:25:10,404 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:25:10,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 08:25:10,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:25:10,605 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:25:10,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:25:10,605 INFO L85 PathProgramCache]: Analyzing trace with hash -666623078, now seen corresponding path program 1 times [2024-12-02 08:25:10,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:25:10,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98037896] [2024-12-02 08:25:10,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:25:10,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:25:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:25:11,345 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 40 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:25:11,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:25:11,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98037896] [2024-12-02 08:25:11,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98037896] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:25:11,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446493522] [2024-12-02 08:25:11,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:25:11,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:25:11,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:25:11,348 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:25:11,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 08:25:11,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:25:11,472 INFO L256 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-12-02 08:25:11,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:25:13,635 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 22 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:25:13,635 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:25:17,940 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 22 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:25:17,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446493522] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:25:17,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:25:17,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 26, 23] total 57 [2024-12-02 08:25:17,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995040195] [2024-12-02 08:25:17,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:25:17,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-12-02 08:25:17,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:25:17,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-12-02 08:25:17,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=2836, Unknown=0, NotChecked=0, Total=3192 [2024-12-02 08:25:17,942 INFO L87 Difference]: Start difference. First operand 3450 states and 4162 transitions. Second operand has 57 states, 57 states have (on average 5.12280701754386) internal successors, (292), 57 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:27:11,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:27:11,810 INFO L93 Difference]: Finished difference Result 13258 states and 16259 transitions. [2024-12-02 08:27:11,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 311 states. [2024-12-02 08:27:11,810 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 5.12280701754386) internal successors, (292), 57 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-12-02 08:27:11,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:27:11,822 INFO L225 Difference]: With dead ends: 13258 [2024-12-02 08:27:11,822 INFO L226 Difference]: Without dead ends: 10876 [2024-12-02 08:27:11,833 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 364 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53282 ImplicationChecksByTransitivity, 110.0s TimeCoverageRelationStatistics Valid=20080, Invalid=113510, Unknown=0, NotChecked=0, Total=133590 [2024-12-02 08:27:11,833 INFO L435 NwaCegarLoop]: 182 mSDtfsCounter, 4219 mSDsluCounter, 5176 mSDsCounter, 0 mSdLazyCounter, 5351 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4219 SdHoareTripleChecker+Valid, 5358 SdHoareTripleChecker+Invalid, 5542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 5351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:27:11,833 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4219 Valid, 5358 Invalid, 5542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 5351 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-12-02 08:27:11,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10876 states. [2024-12-02 08:27:12,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10876 to 7090. [2024-12-02 08:27:12,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7090 states, 7089 states have (on average 1.2107490478205671) internal successors, (8583), 7089 states have internal predecessors, (8583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:27:12,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7090 states to 7090 states and 8583 transitions. [2024-12-02 08:27:12,219 INFO L78 Accepts]: Start accepts. Automaton has 7090 states and 8583 transitions. Word has length 104 [2024-12-02 08:27:12,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:27:12,219 INFO L471 AbstractCegarLoop]: Abstraction has 7090 states and 8583 transitions. [2024-12-02 08:27:12,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 5.12280701754386) internal successors, (292), 57 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:27:12,219 INFO L276 IsEmpty]: Start isEmpty. Operand 7090 states and 8583 transitions. [2024-12-02 08:27:12,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 08:27:12,220 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:27:12,220 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:27:12,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-12-02 08:27:12,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:27:12,421 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:27:12,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:27:12,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1499010346, now seen corresponding path program 1 times [2024-12-02 08:27:12,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:27:12,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103605813] [2024-12-02 08:27:12,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:27:12,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:27:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:27:13,143 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 32 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:27:13,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:27:13,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103605813] [2024-12-02 08:27:13,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103605813] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:27:13,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380984659] [2024-12-02 08:27:13,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:27:13,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:27:13,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:27:13,146 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:27:13,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 08:27:13,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:27:13,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-12-02 08:27:13,275 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:27:15,282 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 32 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:27:15,283 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:27:18,294 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 32 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:27:18,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380984659] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:27:18,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:27:18,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 18, 18] total 40 [2024-12-02 08:27:18,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062997315] [2024-12-02 08:27:18,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:27:18,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-12-02 08:27:18,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:27:18,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-12-02 08:27:18,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1416, Unknown=0, NotChecked=0, Total=1640 [2024-12-02 08:27:18,296 INFO L87 Difference]: Start difference. First operand 7090 states and 8583 transitions. Second operand has 41 states, 41 states have (on average 5.951219512195122) internal successors, (244), 40 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) [2024-12-02 08:27:21,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:27:21,940 INFO L93 Difference]: Finished difference Result 13229 states and 16215 transitions. [2024-12-02 08:27:21,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-12-02 08:27:21,941 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 5.951219512195122) internal successors, (244), 40 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 104 [2024-12-02 08:27:21,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:27:21,955 INFO L225 Difference]: With dead ends: 13229 [2024-12-02 08:27:21,955 INFO L226 Difference]: Without dead ends: 9324 [2024-12-02 08:27:21,959 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1619 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1233, Invalid=5409, Unknown=0, NotChecked=0, Total=6642 [2024-12-02 08:27:21,960 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 1968 mSDsluCounter, 1890 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1968 SdHoareTripleChecker+Valid, 2025 SdHoareTripleChecker+Invalid, 1548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:27:21,960 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1968 Valid, 2025 Invalid, 1548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 08:27:21,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9324 states. [2024-12-02 08:27:22,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9324 to 7090. [2024-12-02 08:27:22,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7090 states, 7089 states have (on average 1.201015658061786) internal successors, (8514), 7089 states have internal predecessors, (8514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:27:22,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7090 states to 7090 states and 8514 transitions. [2024-12-02 08:27:22,396 INFO L78 Accepts]: Start accepts. Automaton has 7090 states and 8514 transitions. Word has length 104 [2024-12-02 08:27:22,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:27:22,396 INFO L471 AbstractCegarLoop]: Abstraction has 7090 states and 8514 transitions. [2024-12-02 08:27:22,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 5.951219512195122) internal successors, (244), 40 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) [2024-12-02 08:27:22,397 INFO L276 IsEmpty]: Start isEmpty. Operand 7090 states and 8514 transitions. [2024-12-02 08:27:22,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 08:27:22,398 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:27:22,398 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:27:22,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 08:27:22,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:27:22,599 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:27:22,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:27:22,599 INFO L85 PathProgramCache]: Analyzing trace with hash -2107819364, now seen corresponding path program 1 times [2024-12-02 08:27:22,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:27:22,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322081080] [2024-12-02 08:27:22,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:27:22,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:27:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:27:23,704 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:27:23,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:27:23,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322081080] [2024-12-02 08:27:23,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322081080] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:27:23,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323391113] [2024-12-02 08:27:23,705 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:27:23,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:27:23,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:27:23,707 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:27:23,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 08:27:23,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:27:23,811 INFO L256 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-12-02 08:27:23,813 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:27:25,991 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 26 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:27:25,991 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:27:29,275 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 26 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:27:29,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323391113] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:27:29,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:27:29,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19, 19] total 58 [2024-12-02 08:27:29,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982458664] [2024-12-02 08:27:29,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:27:29,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-12-02 08:27:29,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:27:29,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-12-02 08:27:29,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=3064, Unknown=0, NotChecked=0, Total=3306 [2024-12-02 08:27:29,277 INFO L87 Difference]: Start difference. First operand 7090 states and 8514 transitions. Second operand has 58 states, 58 states have (on average 5.0344827586206895) internal successors, (292), 58 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:28:03,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:28:03,230 INFO L93 Difference]: Finished difference Result 13559 states and 16416 transitions. [2024-12-02 08:28:03,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2024-12-02 08:28:03,230 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 5.0344827586206895) internal successors, (292), 58 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-12-02 08:28:03,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:28:03,245 INFO L225 Difference]: With dead ends: 13559 [2024-12-02 08:28:03,245 INFO L226 Difference]: Without dead ends: 11507 [2024-12-02 08:28:03,249 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16499 ImplicationChecksByTransitivity, 31.0s TimeCoverageRelationStatistics Valid=7113, Invalid=45099, Unknown=0, NotChecked=0, Total=52212 [2024-12-02 08:28:03,250 INFO L435 NwaCegarLoop]: 225 mSDtfsCounter, 6168 mSDsluCounter, 5660 mSDsCounter, 0 mSdLazyCounter, 4590 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6168 SdHoareTripleChecker+Valid, 5885 SdHoareTripleChecker+Invalid, 4764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 4590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:28:03,250 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6168 Valid, 5885 Invalid, 4764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 4590 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-12-02 08:28:03,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11507 states. [2024-12-02 08:28:03,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11507 to 8264. [2024-12-02 08:28:03,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8264 states, 8263 states have (on average 1.1988381943604018) internal successors, (9906), 8263 states have internal predecessors, (9906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:28:03,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8264 states to 8264 states and 9906 transitions. [2024-12-02 08:28:03,878 INFO L78 Accepts]: Start accepts. Automaton has 8264 states and 9906 transitions. Word has length 104 [2024-12-02 08:28:03,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:28:03,878 INFO L471 AbstractCegarLoop]: Abstraction has 8264 states and 9906 transitions. [2024-12-02 08:28:03,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 5.0344827586206895) internal successors, (292), 58 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:28:03,878 INFO L276 IsEmpty]: Start isEmpty. Operand 8264 states and 9906 transitions. [2024-12-02 08:28:03,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 08:28:03,880 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:28:03,880 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:28:03,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 08:28:04,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:28:04,080 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:28:04,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:28:04,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1524142808, now seen corresponding path program 1 times [2024-12-02 08:28:04,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:28:04,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379230353] [2024-12-02 08:28:04,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:28:04,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:28:04,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:28:04,989 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 40 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:28:04,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:28:04,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379230353] [2024-12-02 08:28:04,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379230353] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:28:04,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213051882] [2024-12-02 08:28:04,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:28:04,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:28:04,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:28:04,990 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:28:04,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 08:28:05,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:28:05,088 INFO L256 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-12-02 08:28:05,090 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:28:07,393 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 40 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:28:07,393 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:28:11,204 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 40 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:28:11,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213051882] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:28:11,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:28:11,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 20] total 60 [2024-12-02 08:28:11,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841358420] [2024-12-02 08:28:11,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:28:11,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-12-02 08:28:11,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:28:11,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-12-02 08:28:11,206 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=361, Invalid=3179, Unknown=0, NotChecked=0, Total=3540 [2024-12-02 08:28:11,206 INFO L87 Difference]: Start difference. First operand 8264 states and 9906 transitions. Second operand has 60 states, 60 states have (on average 4.6) internal successors, (276), 60 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:28:28,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:28:28,831 INFO L93 Difference]: Finished difference Result 16128 states and 19493 transitions. [2024-12-02 08:28:28,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2024-12-02 08:28:28,832 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.6) internal successors, (276), 60 states have internal predecessors, (276), 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 105 [2024-12-02 08:28:28,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:28:28,841 INFO L225 Difference]: With dead ends: 16128 [2024-12-02 08:28:28,841 INFO L226 Difference]: Without dead ends: 13219 [2024-12-02 08:28:28,844 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 169 SyntacticMatches, 2 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7184 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=3928, Invalid=21512, Unknown=0, NotChecked=0, Total=25440 [2024-12-02 08:28:28,844 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 2848 mSDsluCounter, 2773 mSDsCounter, 0 mSdLazyCounter, 2630 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2848 SdHoareTripleChecker+Valid, 2905 SdHoareTripleChecker+Invalid, 2728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:28:28,844 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2848 Valid, 2905 Invalid, 2728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2630 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-02 08:28:28,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13219 states. [2024-12-02 08:28:29,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13219 to 11307. [2024-12-02 08:28:29,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11307 states, 11306 states have (on average 1.201574385282151) internal successors, (13585), 11306 states have internal predecessors, (13585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:28:29,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11307 states to 11307 states and 13585 transitions. [2024-12-02 08:28:29,757 INFO L78 Accepts]: Start accepts. Automaton has 11307 states and 13585 transitions. Word has length 105 [2024-12-02 08:28:29,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:28:29,758 INFO L471 AbstractCegarLoop]: Abstraction has 11307 states and 13585 transitions. [2024-12-02 08:28:29,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.6) internal successors, (276), 60 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:28:29,758 INFO L276 IsEmpty]: Start isEmpty. Operand 11307 states and 13585 transitions. [2024-12-02 08:28:29,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 08:28:29,759 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:28:29,759 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:28:29,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 08:28:29,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:28:29,959 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:28:29,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:28:29,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1399271496, now seen corresponding path program 1 times [2024-12-02 08:28:29,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:28:29,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317633958] [2024-12-02 08:28:29,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:28:29,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:28:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:28:30,998 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:28:30,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:28:30,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317633958] [2024-12-02 08:28:30,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317633958] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:28:30,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117191879] [2024-12-02 08:28:30,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:28:30,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:28:30,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:28:31,000 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:28:31,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 08:28:31,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:28:31,112 INFO L256 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-12-02 08:28:31,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:28:34,148 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 40 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:28:34,148 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:28:42,283 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 27 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:28:42,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117191879] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:28:42,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:28:42,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 27] total 69 [2024-12-02 08:28:42,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065827203] [2024-12-02 08:28:42,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:28:42,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-12-02 08:28:42,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:28:42,284 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-12-02 08:28:42,284 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=4245, Unknown=0, NotChecked=0, Total=4692 [2024-12-02 08:28:42,284 INFO L87 Difference]: Start difference. First operand 11307 states and 13585 transitions. Second operand has 69 states, 69 states have (on average 4.231884057971015) internal successors, (292), 69 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:30:48,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:30:48,606 INFO L93 Difference]: Finished difference Result 33526 states and 40317 transitions. [2024-12-02 08:30:48,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 330 states. [2024-12-02 08:30:48,607 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 4.231884057971015) internal successors, (292), 69 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-12-02 08:30:48,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:30:48,627 INFO L225 Difference]: With dead ends: 33526 [2024-12-02 08:30:48,628 INFO L226 Difference]: Without dead ends: 23128 [2024-12-02 08:30:48,641 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 162 SyntacticMatches, 1 SemanticMatches, 389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62073 ImplicationChecksByTransitivity, 119.2s TimeCoverageRelationStatistics Valid=21867, Invalid=130623, Unknown=0, NotChecked=0, Total=152490 [2024-12-02 08:30:48,642 INFO L435 NwaCegarLoop]: 243 mSDtfsCounter, 6440 mSDsluCounter, 6699 mSDsCounter, 0 mSdLazyCounter, 7326 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6440 SdHoareTripleChecker+Valid, 6942 SdHoareTripleChecker+Invalid, 7687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 7326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2024-12-02 08:30:48,642 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6440 Valid, 6942 Invalid, 7687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 7326 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2024-12-02 08:30:48,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23128 states. [2024-12-02 08:30:49,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23128 to 11431. [2024-12-02 08:30:49,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11431 states, 11430 states have (on average 1.1976377952755906) internal successors, (13689), 11430 states have internal predecessors, (13689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:30:49,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11431 states to 11431 states and 13689 transitions. [2024-12-02 08:30:49,925 INFO L78 Accepts]: Start accepts. Automaton has 11431 states and 13689 transitions. Word has length 105 [2024-12-02 08:30:49,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:30:49,925 INFO L471 AbstractCegarLoop]: Abstraction has 11431 states and 13689 transitions. [2024-12-02 08:30:49,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 4.231884057971015) internal successors, (292), 69 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:30:49,926 INFO L276 IsEmpty]: Start isEmpty. Operand 11431 states and 13689 transitions. [2024-12-02 08:30:49,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 08:30:49,926 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:30:49,927 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:30:49,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-12-02 08:30:50,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:30:50,127 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:30:50,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:30:50,127 INFO L85 PathProgramCache]: Analyzing trace with hash 947963116, now seen corresponding path program 1 times [2024-12-02 08:30:50,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:30:50,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718492061] [2024-12-02 08:30:50,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:30:50,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:30:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:30:50,549 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 45 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:30:50,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:30:50,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718492061] [2024-12-02 08:30:50,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718492061] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:30:50,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744780143] [2024-12-02 08:30:50,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:30:50,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:30:50,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:30:50,551 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:30:50,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 08:30:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:30:50,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 08:30:50,668 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:30:51,682 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 35 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:30:51,682 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:30:55,276 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 35 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:30:55,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744780143] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:30:55,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:30:55,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 40 [2024-12-02 08:30:55,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713555273] [2024-12-02 08:30:55,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:30:55,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-12-02 08:30:55,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:30:55,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-12-02 08:30:55,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1404, Unknown=0, NotChecked=0, Total=1560 [2024-12-02 08:30:55,278 INFO L87 Difference]: Start difference. First operand 11431 states and 13689 transitions. Second operand has 40 states, 40 states have (on average 7.25) internal successors, (290), 40 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:31:02,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:31:02,371 INFO L93 Difference]: Finished difference Result 28798 states and 34542 transitions. [2024-12-02 08:31:02,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-12-02 08:31:02,372 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 7.25) internal successors, (290), 40 states have internal predecessors, (290), 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 107 [2024-12-02 08:31:02,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:31:02,383 INFO L225 Difference]: With dead ends: 28798 [2024-12-02 08:31:02,383 INFO L226 Difference]: Without dead ends: 18011 [2024-12-02 08:31:02,388 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1534 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1944, Invalid=6798, Unknown=0, NotChecked=0, Total=8742 [2024-12-02 08:31:02,388 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 1593 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 1657 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1593 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 1720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:31:02,388 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1593 Valid, 1708 Invalid, 1720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1657 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 08:31:02,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18011 states. [2024-12-02 08:31:04,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18011 to 15571. [2024-12-02 08:31:04,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15571 states, 15570 states have (on average 1.1814386640976235) internal successors, (18395), 15570 states have internal predecessors, (18395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:31:04,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15571 states to 15571 states and 18395 transitions. [2024-12-02 08:31:04,422 INFO L78 Accepts]: Start accepts. Automaton has 15571 states and 18395 transitions. Word has length 107 [2024-12-02 08:31:04,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:31:04,422 INFO L471 AbstractCegarLoop]: Abstraction has 15571 states and 18395 transitions. [2024-12-02 08:31:04,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 7.25) internal successors, (290), 40 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:31:04,422 INFO L276 IsEmpty]: Start isEmpty. Operand 15571 states and 18395 transitions. [2024-12-02 08:31:04,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-12-02 08:31:04,423 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:31:04,424 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 08:31:04,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 08:31:04,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:31:04,624 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:31:04,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:31:04,624 INFO L85 PathProgramCache]: Analyzing trace with hash -784175164, now seen corresponding path program 1 times [2024-12-02 08:31:04,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:31:04,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910867664] [2024-12-02 08:31:04,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:31:04,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:31:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:31:05,204 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 147 proven. 76 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-12-02 08:31:05,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:31:05,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910867664] [2024-12-02 08:31:05,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910867664] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:31:05,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461384325] [2024-12-02 08:31:05,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:31:05,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:31:05,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:31:05,206 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:31:05,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 08:31:05,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:31:05,340 INFO L256 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-12-02 08:31:05,342 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:31:06,972 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 147 proven. 76 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-12-02 08:31:06,972 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:31:13,528 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 147 proven. 76 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-12-02 08:31:13,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461384325] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:31:13,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:31:13,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 24, 24] total 55 [2024-12-02 08:31:13,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400167714] [2024-12-02 08:31:13,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:31:13,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-12-02 08:31:13,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:31:13,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-12-02 08:31:13,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=2683, Unknown=0, NotChecked=0, Total=3080 [2024-12-02 08:31:13,530 INFO L87 Difference]: Start difference. First operand 15571 states and 18395 transitions. Second operand has 56 states, 56 states have (on average 5.428571428571429) internal successors, (304), 55 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:31:23,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:31:23,301 INFO L93 Difference]: Finished difference Result 27449 states and 32523 transitions. [2024-12-02 08:31:23,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2024-12-02 08:31:23,301 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 5.428571428571429) internal successors, (304), 55 states have internal predecessors, (304), 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 144 [2024-12-02 08:31:23,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:31:23,312 INFO L225 Difference]: With dead ends: 27449 [2024-12-02 08:31:23,312 INFO L226 Difference]: Without dead ends: 17180 [2024-12-02 08:31:23,317 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7825 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=4674, Invalid=21408, Unknown=0, NotChecked=0, Total=26082 [2024-12-02 08:31:23,318 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 2126 mSDsluCounter, 2930 mSDsCounter, 0 mSdLazyCounter, 2473 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2126 SdHoareTripleChecker+Valid, 3100 SdHoareTripleChecker+Invalid, 2563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 2473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-02 08:31:23,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2126 Valid, 3100 Invalid, 2563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 2473 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-02 08:31:23,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17180 states. [2024-12-02 08:31:25,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17180 to 13754. [2024-12-02 08:31:25,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13754 states, 13753 states have (on average 1.1717443466879953) internal successors, (16115), 13753 states have internal predecessors, (16115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:31:25,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13754 states to 13754 states and 16115 transitions. [2024-12-02 08:31:25,322 INFO L78 Accepts]: Start accepts. Automaton has 13754 states and 16115 transitions. Word has length 144 [2024-12-02 08:31:25,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:31:25,322 INFO L471 AbstractCegarLoop]: Abstraction has 13754 states and 16115 transitions. [2024-12-02 08:31:25,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 5.428571428571429) internal successors, (304), 55 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:31:25,322 INFO L276 IsEmpty]: Start isEmpty. Operand 13754 states and 16115 transitions. [2024-12-02 08:31:25,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-12-02 08:31:25,325 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:31:25,325 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:31:25,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 08:31:25,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-02 08:31:25,526 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:31:25,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:31:25,526 INFO L85 PathProgramCache]: Analyzing trace with hash 513182432, now seen corresponding path program 1 times [2024-12-02 08:31:25,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:31:25,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313015876] [2024-12-02 08:31:25,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:31:25,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:31:25,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:31:26,379 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 144 proven. 77 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-12-02 08:31:26,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:31:26,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313015876] [2024-12-02 08:31:26,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313015876] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:31:26,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258058406] [2024-12-02 08:31:26,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:31:26,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:31:26,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:31:26,381 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:31:26,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 08:31:26,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:31:26,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-12-02 08:31:26,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:31:28,973 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 81 proven. 167 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:31:28,973 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:31:33,949 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 81 proven. 167 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:31:33,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258058406] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:31:33,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:31:33,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 22] total 64 [2024-12-02 08:31:33,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966561222] [2024-12-02 08:31:33,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:31:33,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-12-02 08:31:33,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:31:33,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-12-02 08:31:33,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=389, Invalid=3643, Unknown=0, NotChecked=0, Total=4032 [2024-12-02 08:31:33,951 INFO L87 Difference]: Start difference. First operand 13754 states and 16115 transitions. Second operand has 64 states, 64 states have (on average 5.953125) internal successors, (381), 64 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:31:53,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:31:53,825 INFO L93 Difference]: Finished difference Result 28907 states and 33992 transitions. [2024-12-02 08:31:53,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2024-12-02 08:31:53,826 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 5.953125) internal successors, (381), 64 states have internal predecessors, (381), 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 145 [2024-12-02 08:31:53,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:31:53,837 INFO L225 Difference]: With dead ends: 28907 [2024-12-02 08:31:53,837 INFO L226 Difference]: Without dead ends: 20382 [2024-12-02 08:31:53,843 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9007 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=5107, Invalid=24995, Unknown=0, NotChecked=0, Total=30102 [2024-12-02 08:31:53,844 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 4047 mSDsluCounter, 4014 mSDsCounter, 0 mSdLazyCounter, 3581 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4047 SdHoareTripleChecker+Valid, 4178 SdHoareTripleChecker+Invalid, 3734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 3581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-12-02 08:31:53,844 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4047 Valid, 4178 Invalid, 3734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 3581 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-12-02 08:31:53,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20382 states. [2024-12-02 08:31:55,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20382 to 12734. [2024-12-02 08:31:55,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12734 states, 12733 states have (on average 1.167910154716092) internal successors, (14871), 12733 states have internal predecessors, (14871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:31:55,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12734 states to 12734 states and 14871 transitions. [2024-12-02 08:31:55,568 INFO L78 Accepts]: Start accepts. Automaton has 12734 states and 14871 transitions. Word has length 145 [2024-12-02 08:31:55,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:31:55,568 INFO L471 AbstractCegarLoop]: Abstraction has 12734 states and 14871 transitions. [2024-12-02 08:31:55,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 5.953125) internal successors, (381), 64 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:31:55,568 INFO L276 IsEmpty]: Start isEmpty. Operand 12734 states and 14871 transitions. [2024-12-02 08:31:55,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 08:31:55,570 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:31:55,570 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:31:55,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 08:31:55,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:31:55,770 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:31:55,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:31:55,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1179368566, now seen corresponding path program 2 times [2024-12-02 08:31:55,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:31:55,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852918523] [2024-12-02 08:31:55,771 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 08:31:55,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:31:55,829 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 08:31:55,830 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:31:56,181 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 34 proven. 205 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 08:31:56,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:31:56,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852918523] [2024-12-02 08:31:56,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852918523] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:31:56,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962193396] [2024-12-02 08:31:56,181 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 08:31:56,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:31:56,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:31:56,183 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:31:56,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 08:31:56,318 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 08:31:56,319 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 08:31:56,320 INFO L256 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 08:31:56,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:31:56,697 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 37 proven. 207 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-02 08:31:56,697 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:31:57,605 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 155 proven. 96 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 08:31:57,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962193396] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:31:57,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:31:57,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 12] total 23 [2024-12-02 08:31:57,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596407419] [2024-12-02 08:31:57,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:31:57,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 08:31:57,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:31:57,606 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 08:31:57,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2024-12-02 08:31:57,606 INFO L87 Difference]: Start difference. First operand 12734 states and 14871 transitions. Second operand has 23 states, 23 states have (on average 14.652173913043478) internal successors, (337), 23 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:32:01,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:32:01,085 INFO L93 Difference]: Finished difference Result 34057 states and 40185 transitions. [2024-12-02 08:32:01,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 08:32:01,085 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 14.652173913043478) internal successors, (337), 23 states have internal predecessors, (337), 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 147 [2024-12-02 08:32:01,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:32:01,100 INFO L225 Difference]: With dead ends: 34057 [2024-12-02 08:32:01,100 INFO L226 Difference]: Without dead ends: 21926 [2024-12-02 08:32:01,105 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 279 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=214, Invalid=598, Unknown=0, NotChecked=0, Total=812 [2024-12-02 08:32:01,106 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 472 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:32:01,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 1482 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:32:01,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21926 states. [2024-12-02 08:32:03,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21926 to 20981. [2024-12-02 08:32:03,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20981 states, 20980 states have (on average 1.1295996186844615) internal successors, (23699), 20980 states have internal predecessors, (23699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:32:03,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20981 states to 20981 states and 23699 transitions. [2024-12-02 08:32:03,893 INFO L78 Accepts]: Start accepts. Automaton has 20981 states and 23699 transitions. Word has length 147 [2024-12-02 08:32:03,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:32:03,894 INFO L471 AbstractCegarLoop]: Abstraction has 20981 states and 23699 transitions. [2024-12-02 08:32:03,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 14.652173913043478) internal successors, (337), 23 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:32:03,894 INFO L276 IsEmpty]: Start isEmpty. Operand 20981 states and 23699 transitions. [2024-12-02 08:32:03,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 08:32:03,895 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:32:03,895 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:32:03,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 08:32:04,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 08:32:04,096 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:32:04,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:32:04,096 INFO L85 PathProgramCache]: Analyzing trace with hash -360939578, now seen corresponding path program 1 times [2024-12-02 08:32:04,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:32:04,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732918343] [2024-12-02 08:32:04,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:32:04,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:32:04,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:32:05,019 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 69 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:32:05,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:32:05,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732918343] [2024-12-02 08:32:05,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732918343] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:32:05,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420449046] [2024-12-02 08:32:05,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:32:05,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:32:05,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:32:05,021 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:32:05,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 08:32:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:32:05,162 INFO L256 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-12-02 08:32:05,164 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:32:09,077 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 69 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:32:09,078 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:32:16,208 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 69 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:32:16,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420449046] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:32:16,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:32:16,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 30, 30] total 77 [2024-12-02 08:32:16,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061061605] [2024-12-02 08:32:16,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:32:16,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-12-02 08:32:16,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:32:16,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-12-02 08:32:16,210 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=707, Invalid=5145, Unknown=0, NotChecked=0, Total=5852 [2024-12-02 08:32:16,210 INFO L87 Difference]: Start difference. First operand 20981 states and 23699 transitions. Second operand has 77 states, 77 states have (on average 5.025974025974026) internal successors, (387), 77 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:32:45,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:32:45,893 INFO L93 Difference]: Finished difference Result 27960 states and 31552 transitions. [2024-12-02 08:32:45,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2024-12-02 08:32:45,894 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 5.025974025974026) internal successors, (387), 77 states have internal predecessors, (387), 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 147 [2024-12-02 08:32:45,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:32:45,907 INFO L225 Difference]: With dead ends: 27960 [2024-12-02 08:32:45,907 INFO L226 Difference]: Without dead ends: 23994 [2024-12-02 08:32:45,911 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 237 SyntacticMatches, 2 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15917 ImplicationChecksByTransitivity, 26.9s TimeCoverageRelationStatistics Valid=9265, Invalid=37175, Unknown=0, NotChecked=0, Total=46440 [2024-12-02 08:32:45,911 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 2960 mSDsluCounter, 3652 mSDsCounter, 0 mSdLazyCounter, 3641 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2960 SdHoareTripleChecker+Valid, 3771 SdHoareTripleChecker+Invalid, 3797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 3641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:32:45,911 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2960 Valid, 3771 Invalid, 3797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 3641 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-12-02 08:32:45,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23994 states. [2024-12-02 08:32:49,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23994 to 21640. [2024-12-02 08:32:49,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21640 states, 21639 states have (on average 1.1284717408383012) internal successors, (24419), 21639 states have internal predecessors, (24419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:32:49,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21640 states to 21640 states and 24419 transitions. [2024-12-02 08:32:49,286 INFO L78 Accepts]: Start accepts. Automaton has 21640 states and 24419 transitions. Word has length 147 [2024-12-02 08:32:49,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:32:49,287 INFO L471 AbstractCegarLoop]: Abstraction has 21640 states and 24419 transitions. [2024-12-02 08:32:49,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 5.025974025974026) internal successors, (387), 77 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:32:49,287 INFO L276 IsEmpty]: Start isEmpty. Operand 21640 states and 24419 transitions. [2024-12-02 08:32:49,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 08:32:49,289 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:32:49,289 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:32:49,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 08:32:49,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 08:32:49,490 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:32:49,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:32:49,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1308452922, now seen corresponding path program 1 times [2024-12-02 08:32:49,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:32:49,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449237803] [2024-12-02 08:32:49,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:32:49,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:32:49,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:32:50,809 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 37 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:32:50,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:32:50,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449237803] [2024-12-02 08:32:50,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449237803] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:32:50,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869223003] [2024-12-02 08:32:50,809 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:32:50,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:32:50,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:32:50,811 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:32:50,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 08:32:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:32:50,942 INFO L256 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-12-02 08:32:50,944 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:32:53,709 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 37 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:32:53,709 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:32:58,287 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 37 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:32:58,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869223003] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:32:58,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:32:58,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 24, 21] total 67 [2024-12-02 08:32:58,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796000086] [2024-12-02 08:32:58,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:32:58,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-12-02 08:32:58,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:32:58,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-12-02 08:32:58,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=4109, Unknown=0, NotChecked=0, Total=4422 [2024-12-02 08:32:58,289 INFO L87 Difference]: Start difference. First operand 21640 states and 24419 transitions. Second operand has 67 states, 67 states have (on average 5.895522388059701) internal successors, (395), 67 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:35:14,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:35:14,665 INFO L93 Difference]: Finished difference Result 45635 states and 51584 transitions. [2024-12-02 08:35:14,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 358 states. [2024-12-02 08:35:14,665 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 5.895522388059701) internal successors, (395), 67 states have internal predecessors, (395), 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 147 [2024-12-02 08:35:14,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:35:14,688 INFO L225 Difference]: With dead ends: 45635 [2024-12-02 08:35:14,688 INFO L226 Difference]: Without dead ends: 38693 [2024-12-02 08:35:14,697 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 675 GetRequests, 252 SyntacticMatches, 2 SemanticMatches, 421 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74189 ImplicationChecksByTransitivity, 126.4s TimeCoverageRelationStatistics Valid=24445, Invalid=154061, Unknown=0, NotChecked=0, Total=178506 [2024-12-02 08:35:14,697 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 7213 mSDsluCounter, 6486 mSDsCounter, 0 mSdLazyCounter, 5558 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7213 SdHoareTripleChecker+Valid, 6695 SdHoareTripleChecker+Invalid, 5884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 5558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:35:14,697 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7213 Valid, 6695 Invalid, 5884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 5558 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-12-02 08:35:14,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38693 states. [2024-12-02 08:35:18,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38693 to 24918. [2024-12-02 08:35:18,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24918 states, 24917 states have (on average 1.1277039772043183) internal successors, (28099), 24917 states have internal predecessors, (28099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:35:18,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24918 states to 24918 states and 28099 transitions. [2024-12-02 08:35:18,531 INFO L78 Accepts]: Start accepts. Automaton has 24918 states and 28099 transitions. Word has length 147 [2024-12-02 08:35:18,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:35:18,531 INFO L471 AbstractCegarLoop]: Abstraction has 24918 states and 28099 transitions. [2024-12-02 08:35:18,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 5.895522388059701) internal successors, (395), 67 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:35:18,531 INFO L276 IsEmpty]: Start isEmpty. Operand 24918 states and 28099 transitions. [2024-12-02 08:35:18,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 08:35:18,532 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:35:18,532 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:35:18,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-12-02 08:35:18,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:35:18,733 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:35:18,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:35:18,733 INFO L85 PathProgramCache]: Analyzing trace with hash -2017059322, now seen corresponding path program 1 times [2024-12-02 08:35:18,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:35:18,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007651256] [2024-12-02 08:35:18,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:35:18,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:35:18,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:35:19,643 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 53 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:35:19,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:35:19,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007651256] [2024-12-02 08:35:19,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007651256] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:35:19,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883631884] [2024-12-02 08:35:19,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:35:19,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:35:19,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:35:19,645 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:35:19,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 08:35:19,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:35:19,779 INFO L256 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 87 conjuncts are in the unsatisfiable core [2024-12-02 08:35:19,781 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:35:25,039 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 53 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:35:25,039 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:35:40,658 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 53 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:35:40,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883631884] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:35:40,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:35:40,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 36, 35] total 89 [2024-12-02 08:35:40,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651216456] [2024-12-02 08:35:40,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:35:40,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2024-12-02 08:35:40,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:35:40,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2024-12-02 08:35:40,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=939, Invalid=6893, Unknown=0, NotChecked=0, Total=7832 [2024-12-02 08:35:40,660 INFO L87 Difference]: Start difference. First operand 24918 states and 28099 transitions. Second operand has 89 states, 89 states have (on average 4.561797752808989) internal successors, (406), 89 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:51,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:37:51,391 INFO L93 Difference]: Finished difference Result 32132 states and 36109 transitions. [2024-12-02 08:37:51,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 229 states. [2024-12-02 08:37:51,392 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 4.561797752808989) internal successors, (406), 89 states have internal predecessors, (406), 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 147 [2024-12-02 08:37:51,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:37:51,405 INFO L225 Difference]: With dead ends: 32132 [2024-12-02 08:37:51,405 INFO L226 Difference]: Without dead ends: 20009 [2024-12-02 08:37:51,412 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 225 SyntacticMatches, 2 SemanticMatches, 312 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34984 ImplicationChecksByTransitivity, 127.1s TimeCoverageRelationStatistics Valid=18730, Invalid=79552, Unknown=0, NotChecked=0, Total=98282 [2024-12-02 08:37:51,412 INFO L435 NwaCegarLoop]: 202 mSDtfsCounter, 5175 mSDsluCounter, 5826 mSDsCounter, 0 mSdLazyCounter, 5482 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5175 SdHoareTripleChecker+Valid, 6028 SdHoareTripleChecker+Invalid, 5822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 5482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2024-12-02 08:37:51,413 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5175 Valid, 6028 Invalid, 5822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 5482 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2024-12-02 08:37:51,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20009 states. [2024-12-02 08:37:54,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20009 to 15365. [2024-12-02 08:37:54,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15365 states, 15364 states have (on average 1.1107133558969018) internal successors, (17065), 15364 states have internal predecessors, (17065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:54,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15365 states to 15365 states and 17065 transitions. [2024-12-02 08:37:54,095 INFO L78 Accepts]: Start accepts. Automaton has 15365 states and 17065 transitions. Word has length 147 [2024-12-02 08:37:54,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:37:54,096 INFO L471 AbstractCegarLoop]: Abstraction has 15365 states and 17065 transitions. [2024-12-02 08:37:54,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 4.561797752808989) internal successors, (406), 89 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:54,096 INFO L276 IsEmpty]: Start isEmpty. Operand 15365 states and 17065 transitions. [2024-12-02 08:37:54,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-12-02 08:37:54,097 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:37:54,097 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-12-02 08:37:54,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-12-02 08:37:54,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:37:54,298 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:37:54,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:37:54,298 INFO L85 PathProgramCache]: Analyzing trace with hash 189196146, now seen corresponding path program 1 times [2024-12-02 08:37:54,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:37:54,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158393066] [2024-12-02 08:37:54,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:37:54,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:37:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:37:54,395 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2024-12-02 08:37:54,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:37:54,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158393066] [2024-12-02 08:37:54,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158393066] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:37:54,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:37:54,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:37:54,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412777585] [2024-12-02 08:37:54,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:37:54,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:37:54,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:37:54,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:37:54,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:37:54,397 INFO L87 Difference]: Start difference. First operand 15365 states and 17065 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:57,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:37:57,101 INFO L93 Difference]: Finished difference Result 16301 states and 18094 transitions. [2024-12-02 08:37:57,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:37:57,101 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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 148 [2024-12-02 08:37:57,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:37:57,111 INFO L225 Difference]: With dead ends: 16301 [2024-12-02 08:37:57,111 INFO L226 Difference]: Without dead ends: 15663 [2024-12-02 08:37:57,113 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:37:57,114 INFO L435 NwaCegarLoop]: 93 mSDtfsCounter, 130 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:37:57,114 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 232 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:37:57,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15663 states. [2024-12-02 08:37:59,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15663 to 15271. [2024-12-02 08:37:59,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15271 states, 15270 states have (on average 1.109299279633268) internal successors, (16939), 15270 states have internal predecessors, (16939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:59,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15271 states to 15271 states and 16939 transitions. [2024-12-02 08:37:59,728 INFO L78 Accepts]: Start accepts. Automaton has 15271 states and 16939 transitions. Word has length 148 [2024-12-02 08:37:59,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:37:59,728 INFO L471 AbstractCegarLoop]: Abstraction has 15271 states and 16939 transitions. [2024-12-02 08:37:59,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:37:59,728 INFO L276 IsEmpty]: Start isEmpty. Operand 15271 states and 16939 transitions. [2024-12-02 08:37:59,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-12-02 08:37:59,729 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:37:59,729 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:37:59,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-12-02 08:37:59,730 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:37:59,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:37:59,730 INFO L85 PathProgramCache]: Analyzing trace with hash 611897972, now seen corresponding path program 1 times [2024-12-02 08:37:59,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:37:59,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767655258] [2024-12-02 08:37:59,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:37:59,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:37:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:38:02,055 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 69 proven. 191 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:38:02,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:38:02,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767655258] [2024-12-02 08:38:02,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767655258] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:38:02,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554721157] [2024-12-02 08:38:02,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:38:02,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:38:02,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:38:02,057 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:38:02,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a8a15bc-837e-4f42-8960-97e836f4ce92/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 08:38:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:38:02,204 INFO L256 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-12-02 08:38:02,206 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:38:05,440 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 72 proven. 188 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:38:05,440 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:38:15,752 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 69 proven. 191 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:38:15,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554721157] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:38:15,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:38:15,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 25, 25] total 78 [2024-12-02 08:38:15,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967185644] [2024-12-02 08:38:15,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:38:15,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-12-02 08:38:15,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:38:15,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-12-02 08:38:15,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=413, Invalid=5593, Unknown=0, NotChecked=0, Total=6006 [2024-12-02 08:38:15,754 INFO L87 Difference]: Start difference. First operand 15271 states and 16939 transitions. Second operand has 78 states, 78 states have (on average 5.153846153846154) internal successors, (402), 78 states have internal predecessors, (402), 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)