./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.BOUNDED-10.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_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/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_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.BOUNDED-10.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/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_3b47703a-e669-4442-b21a-8088724894e9/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 f7497e4203b86f15acb74ef94ae3bce6255aa8233294110bb99f24cde0725dc7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 07:29:15,291 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 07:29:15,356 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 07:29:15,362 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 07:29:15,362 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 07:29:15,388 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 07:29:15,388 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 07:29:15,389 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 07:29:15,389 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 07:29:15,389 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 07:29:15,389 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 07:29:15,389 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 07:29:15,390 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 07:29:15,390 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 07:29:15,390 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 07:29:15,390 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 07:29:15,390 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 07:29:15,390 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 07:29:15,390 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 07:29:15,390 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 07:29:15,390 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 07:29:15,391 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 07:29:15,391 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 07:29:15,391 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 07:29:15,391 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 07:29:15,391 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 07:29:15,391 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 07:29:15,391 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 07:29:15,391 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 07:29:15,391 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:29:15,391 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:29:15,392 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:29:15,392 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:29:15,392 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 07:29:15,392 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:29:15,392 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:29:15,392 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:29:15,392 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:29:15,392 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 07:29:15,392 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 07:29:15,393 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 07:29:15,393 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 07:29:15,393 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 07:29:15,393 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 07:29:15,393 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 07:29:15,393 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 07:29:15,393 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 07:29:15,393 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 07:29:15,393 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_3b47703a-e669-4442-b21a-8088724894e9/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 -> f7497e4203b86f15acb74ef94ae3bce6255aa8233294110bb99f24cde0725dc7 [2024-12-02 07:29:15,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 07:29:15,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 07:29:15,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 07:29:15,676 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 07:29:15,676 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 07:29:15,677 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.BOUNDED-10.pals.c [2024-12-02 07:29:18,355 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/data/40cf17258/2a4bf647e16e40daa7e8b8d1fd399db4/FLAG997faa67b [2024-12-02 07:29:18,585 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 07:29:18,585 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.BOUNDED-10.pals.c [2024-12-02 07:29:18,595 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/data/40cf17258/2a4bf647e16e40daa7e8b8d1fd399db4/FLAG997faa67b [2024-12-02 07:29:18,902 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/data/40cf17258/2a4bf647e16e40daa7e8b8d1fd399db4 [2024-12-02 07:29:18,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 07:29:18,904 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 07:29:18,905 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 07:29:18,905 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 07:29:18,908 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 07:29:18,909 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:29:18" (1/1) ... [2024-12-02 07:29:18,910 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7400b97b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:18, skipping insertion in model container [2024-12-02 07:29:18,910 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:29:18" (1/1) ... [2024-12-02 07:29:18,927 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 07:29:19,111 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_3b47703a-e669-4442-b21a-8088724894e9/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.BOUNDED-10.pals.c[11233,11246] [2024-12-02 07:29:19,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:29:19,124 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 07:29:19,166 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_3b47703a-e669-4442-b21a-8088724894e9/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.BOUNDED-10.pals.c[11233,11246] [2024-12-02 07:29:19,166 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:29:19,182 INFO L204 MainTranslator]: Completed translation [2024-12-02 07:29:19,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:19 WrapperNode [2024-12-02 07:29:19,183 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 07:29:19,184 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 07:29:19,184 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 07:29:19,184 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 07:29:19,190 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:19" (1/1) ... [2024-12-02 07:29:19,198 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:19" (1/1) ... [2024-12-02 07:29:19,222 INFO L138 Inliner]: procedures = 24, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 337 [2024-12-02 07:29:19,222 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 07:29:19,222 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 07:29:19,222 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 07:29:19,223 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 07:29:19,232 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:19" (1/1) ... [2024-12-02 07:29:19,232 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:19" (1/1) ... [2024-12-02 07:29:19,235 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:19" (1/1) ... [2024-12-02 07:29:19,247 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 07:29:19,247 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:19" (1/1) ... [2024-12-02 07:29:19,247 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:19" (1/1) ... [2024-12-02 07:29:19,253 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:19" (1/1) ... [2024-12-02 07:29:19,254 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:19" (1/1) ... [2024-12-02 07:29:19,259 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:19" (1/1) ... [2024-12-02 07:29:19,260 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:19" (1/1) ... [2024-12-02 07:29:19,261 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:19" (1/1) ... [2024-12-02 07:29:19,264 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 07:29:19,265 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 07:29:19,265 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 07:29:19,265 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 07:29:19,266 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:19" (1/1) ... [2024-12-02 07:29:19,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:29:19,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:29:19,294 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 07:29:19,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 07:29:19,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 07:29:19,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 07:29:19,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 07:29:19,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 07:29:19,405 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 07:29:19,407 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 07:29:19,754 INFO L? ?]: Removed 40 outVars from TransFormulas that were not future-live. [2024-12-02 07:29:19,754 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 07:29:19,764 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 07:29:19,764 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-02 07:29:19,765 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:29:19 BoogieIcfgContainer [2024-12-02 07:29:19,765 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 07:29:19,767 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 07:29:19,767 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 07:29:19,771 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 07:29:19,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:29:18" (1/3) ... [2024-12-02 07:29:19,772 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@114f593b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:29:19, skipping insertion in model container [2024-12-02 07:29:19,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:29:19" (2/3) ... [2024-12-02 07:29:19,772 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@114f593b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:29:19, skipping insertion in model container [2024-12-02 07:29:19,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:29:19" (3/3) ... [2024-12-02 07:29:19,773 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals.c [2024-12-02 07:29:19,788 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 07:29:19,790 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.5.ufo.BOUNDED-10.pals.c that has 1 procedures, 84 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 07:29:19,836 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:29:19,846 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;@703c300a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:29:19,846 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 07:29:19,850 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 82 states have (on average 1.7439024390243902) internal successors, (143), 83 states have internal predecessors, (143), 0 states have call successors, (0), 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 07:29:19,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-12-02 07:29:19,856 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:29:19,857 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] [2024-12-02 07:29:19,857 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:29:19,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:29:19,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1530299265, now seen corresponding path program 1 times [2024-12-02 07:29:19,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:29:19,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201479850] [2024-12-02 07:29:19,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:29:19,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:29:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:29:20,067 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 07:29:20,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:29:20,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201479850] [2024-12-02 07:29:20,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201479850] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:29:20,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:29:20,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 07:29:20,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353901459] [2024-12-02 07:29:20,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:29:20,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 07:29:20,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:29:20,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 07:29:20,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 07:29:20,094 INFO L87 Difference]: Start difference. First operand has 84 states, 82 states have (on average 1.7439024390243902) internal successors, (143), 83 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 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 07:29:20,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:29:20,112 INFO L93 Difference]: Finished difference Result 132 states and 218 transitions. [2024-12-02 07:29:20,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 07:29:20,114 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2024-12-02 07:29:20,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:29:20,121 INFO L225 Difference]: With dead ends: 132 [2024-12-02 07:29:20,122 INFO L226 Difference]: Without dead ends: 80 [2024-12-02 07:29:20,124 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 07:29:20,127 INFO L435 NwaCegarLoop]: 140 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, 140 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:29:20,128 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:29:20,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-12-02 07:29:20,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-12-02 07:29:20,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.7215189873417722) internal successors, (136), 79 states have internal predecessors, (136), 0 states have call successors, (0), 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 07:29:20,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 136 transitions. [2024-12-02 07:29:20,159 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 136 transitions. Word has length 24 [2024-12-02 07:29:20,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:29:20,159 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 136 transitions. [2024-12-02 07:29:20,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 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 07:29:20,159 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 136 transitions. [2024-12-02 07:29:20,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-12-02 07:29:20,160 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:29:20,160 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] [2024-12-02 07:29:20,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 07:29:20,161 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:29:20,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:29:20,162 INFO L85 PathProgramCache]: Analyzing trace with hash -158644477, now seen corresponding path program 1 times [2024-12-02 07:29:20,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:29:20,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625346185] [2024-12-02 07:29:20,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:29:20,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:29:20,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:29:20,361 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 07:29:20,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:29:20,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625346185] [2024-12-02 07:29:20,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625346185] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:29:20,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:29:20,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 07:29:20,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405374422] [2024-12-02 07:29:20,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:29:20,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:29:20,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:29:20,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:29:20,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:29:20,364 INFO L87 Difference]: Start difference. First operand 80 states and 136 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 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 07:29:20,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:29:20,450 INFO L93 Difference]: Finished difference Result 127 states and 208 transitions. [2024-12-02 07:29:20,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:29:20,450 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2024-12-02 07:29:20,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:29:20,451 INFO L225 Difference]: With dead ends: 127 [2024-12-02 07:29:20,451 INFO L226 Difference]: Without dead ends: 80 [2024-12-02 07:29:20,452 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 07:29:20,452 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 0 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:29:20,453 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 500 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:29:20,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-12-02 07:29:20,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-12-02 07:29:20,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.3291139240506329) internal successors, (105), 79 states have internal predecessors, (105), 0 states have call successors, (0), 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 07:29:20,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 105 transitions. [2024-12-02 07:29:20,458 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 105 transitions. Word has length 24 [2024-12-02 07:29:20,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:29:20,458 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 105 transitions. [2024-12-02 07:29:20,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 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 07:29:20,458 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 105 transitions. [2024-12-02 07:29:20,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-12-02 07:29:20,459 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:29:20,459 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:29:20,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 07:29:20,459 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:29:20,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:29:20,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1644700780, now seen corresponding path program 1 times [2024-12-02 07:29:20,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:29:20,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544659367] [2024-12-02 07:29:20,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:29:20,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:29:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:29:20,690 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 07:29:20,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:29:20,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544659367] [2024-12-02 07:29:20,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544659367] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:29:20,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:29:20,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:29:20,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047493406] [2024-12-02 07:29:20,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:29:20,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:29:20,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:29:20,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:29:20,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:29:20,692 INFO L87 Difference]: Start difference. First operand 80 states and 105 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 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 07:29:20,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:29:20,972 INFO L93 Difference]: Finished difference Result 510 states and 785 transitions. [2024-12-02 07:29:20,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 07:29:20,974 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2024-12-02 07:29:20,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:29:20,977 INFO L225 Difference]: With dead ends: 510 [2024-12-02 07:29:20,977 INFO L226 Difference]: Without dead ends: 467 [2024-12-02 07:29:20,978 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2024-12-02 07:29:20,978 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 767 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:29:20,979 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 1328 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:29:20,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2024-12-02 07:29:20,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 121. [2024-12-02 07:29:20,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.4166666666666667) internal successors, (170), 120 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 07:29:20,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 170 transitions. [2024-12-02 07:29:20,996 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 170 transitions. Word has length 54 [2024-12-02 07:29:20,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:29:20,996 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 170 transitions. [2024-12-02 07:29:20,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 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 07:29:20,997 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 170 transitions. [2024-12-02 07:29:20,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 07:29:20,998 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:29:20,998 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:29:20,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 07:29:20,998 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:29:20,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:29:20,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1406212196, now seen corresponding path program 1 times [2024-12-02 07:29:20,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:29:20,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372120716] [2024-12-02 07:29:20,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:29:21,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:29:21,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:29:21,103 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 07:29:21,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:29:21,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372120716] [2024-12-02 07:29:21,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372120716] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:29:21,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:29:21,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:29:21,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781110669] [2024-12-02 07:29:21,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:29:21,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:29:21,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:29:21,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:29:21,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:29:21,105 INFO L87 Difference]: Start difference. First operand 121 states and 170 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 07:29:21,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:29:21,126 INFO L93 Difference]: Finished difference Result 278 states and 417 transitions. [2024-12-02 07:29:21,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:29:21,127 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 07:29:21,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:29:21,128 INFO L225 Difference]: With dead ends: 278 [2024-12-02 07:29:21,128 INFO L226 Difference]: Without dead ends: 194 [2024-12-02 07:29:21,129 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 07:29:21,130 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 43 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 166 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 07:29:21,130 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 166 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:29:21,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-12-02 07:29:21,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 192. [2024-12-02 07:29:21,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.4659685863874345) internal successors, (280), 191 states have internal predecessors, (280), 0 states have call successors, (0), 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 07:29:21,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 280 transitions. [2024-12-02 07:29:21,141 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 280 transitions. Word has length 56 [2024-12-02 07:29:21,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:29:21,142 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 280 transitions. [2024-12-02 07:29:21,142 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 07:29:21,142 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 280 transitions. [2024-12-02 07:29:21,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 07:29:21,143 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:29:21,144 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:29:21,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 07:29:21,144 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:29:21,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:29:21,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1339718684, now seen corresponding path program 1 times [2024-12-02 07:29:21,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:29:21,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289836575] [2024-12-02 07:29:21,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:29:21,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:29:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:29:21,489 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 07:29:21,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:29:21,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289836575] [2024-12-02 07:29:21,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289836575] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:29:21,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:29:21,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:29:21,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645786858] [2024-12-02 07:29:21,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:29:21,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:29:21,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:29:21,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:29:21,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:29:21,491 INFO L87 Difference]: Start difference. First operand 192 states and 280 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 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 07:29:21,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:29:21,677 INFO L93 Difference]: Finished difference Result 349 states and 524 transitions. [2024-12-02 07:29:21,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:29:21,678 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 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 07:29:21,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:29:21,679 INFO L225 Difference]: With dead ends: 349 [2024-12-02 07:29:21,679 INFO L226 Difference]: Without dead ends: 194 [2024-12-02 07:29:21,680 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-12-02 07:29:21,680 INFO L435 NwaCegarLoop]: 98 mSDtfsCounter, 70 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:29:21,680 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 423 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:29:21,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-12-02 07:29:21,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 192. [2024-12-02 07:29:21,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.455497382198953) internal successors, (278), 191 states have internal predecessors, (278), 0 states have call successors, (0), 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 07:29:21,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 278 transitions. [2024-12-02 07:29:21,690 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 278 transitions. Word has length 56 [2024-12-02 07:29:21,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:29:21,691 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 278 transitions. [2024-12-02 07:29:21,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 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 07:29:21,691 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 278 transitions. [2024-12-02 07:29:21,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-12-02 07:29:21,693 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:29:21,693 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:29:21,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 07:29:21,693 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:29:21,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:29:21,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1003670675, now seen corresponding path program 1 times [2024-12-02 07:29:21,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:29:21,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672463296] [2024-12-02 07:29:21,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:29:21,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:29:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:29:22,061 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 07:29:22,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:29:22,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672463296] [2024-12-02 07:29:22,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672463296] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:29:22,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:29:22,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 07:29:22,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078098290] [2024-12-02 07:29:22,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:29:22,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 07:29:22,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:29:22,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 07:29:22,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:29:22,063 INFO L87 Difference]: Start difference. First operand 192 states and 278 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 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 07:29:22,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:29:22,110 INFO L93 Difference]: Finished difference Result 200 states and 287 transitions. [2024-12-02 07:29:22,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 07:29:22,111 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 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 07:29:22,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:29:22,112 INFO L225 Difference]: With dead ends: 200 [2024-12-02 07:29:22,112 INFO L226 Difference]: Without dead ends: 198 [2024-12-02 07:29:22,112 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 07:29:22,113 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 0 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:29:22,113 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 680 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:29:22,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-12-02 07:29:22,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2024-12-02 07:29:22,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.4365482233502538) internal successors, (283), 197 states have internal predecessors, (283), 0 states have call successors, (0), 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 07:29:22,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 283 transitions. [2024-12-02 07:29:22,123 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 283 transitions. Word has length 57 [2024-12-02 07:29:22,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:29:22,124 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 283 transitions. [2024-12-02 07:29:22,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 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 07:29:22,124 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 283 transitions. [2024-12-02 07:29:22,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-12-02 07:29:22,125 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:29:22,125 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:29:22,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 07:29:22,126 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:29:22,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:29:22,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1422466468, now seen corresponding path program 1 times [2024-12-02 07:29:22,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:29:22,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908223719] [2024-12-02 07:29:22,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:29:22,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:29:22,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:29:22,215 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 07:29:22,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:29:22,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908223719] [2024-12-02 07:29:22,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908223719] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:29:22,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:29:22,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:29:22,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117309651] [2024-12-02 07:29:22,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:29:22,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:29:22,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:29:22,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:29:22,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:29:22,217 INFO L87 Difference]: Start difference. First operand 198 states and 283 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 07:29:22,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:29:22,235 INFO L93 Difference]: Finished difference Result 373 states and 549 transitions. [2024-12-02 07:29:22,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:29:22,236 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 07:29:22,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:29:22,238 INFO L225 Difference]: With dead ends: 373 [2024-12-02 07:29:22,238 INFO L226 Difference]: Without dead ends: 283 [2024-12-02 07:29:22,238 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 07:29:22,239 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 57 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 226 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 07:29:22,239 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 226 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:29:22,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-12-02 07:29:22,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 281. [2024-12-02 07:29:22,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 1.4535714285714285) internal successors, (407), 280 states have internal predecessors, (407), 0 states have call successors, (0), 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 07:29:22,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 407 transitions. [2024-12-02 07:29:22,253 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 407 transitions. Word has length 58 [2024-12-02 07:29:22,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:29:22,253 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 407 transitions. [2024-12-02 07:29:22,254 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 07:29:22,254 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 407 transitions. [2024-12-02 07:29:22,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-12-02 07:29:22,254 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:29:22,255 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:29:22,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 07:29:22,255 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:29:22,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:29:22,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1370382428, now seen corresponding path program 1 times [2024-12-02 07:29:22,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:29:22,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444262597] [2024-12-02 07:29:22,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:29:22,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:29:22,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:29:22,336 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 07:29:22,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:29:22,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444262597] [2024-12-02 07:29:22,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444262597] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:29:22,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:29:22,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:29:22,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313681958] [2024-12-02 07:29:22,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:29:22,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:29:22,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:29:22,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:29:22,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:29:22,338 INFO L87 Difference]: Start difference. First operand 281 states and 407 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 07:29:22,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:29:22,363 INFO L93 Difference]: Finished difference Result 739 states and 1099 transitions. [2024-12-02 07:29:22,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:29:22,363 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 07:29:22,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:29:22,366 INFO L225 Difference]: With dead ends: 739 [2024-12-02 07:29:22,366 INFO L226 Difference]: Without dead ends: 498 [2024-12-02 07:29:22,366 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 07:29:22,367 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 53 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 226 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 07:29:22,367 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 226 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:29:22,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2024-12-02 07:29:22,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 496. [2024-12-02 07:29:22,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 495 states have (on average 1.4646464646464648) internal successors, (725), 495 states have internal predecessors, (725), 0 states have call successors, (0), 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 07:29:22,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 725 transitions. [2024-12-02 07:29:22,392 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 725 transitions. Word has length 58 [2024-12-02 07:29:22,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:29:22,392 INFO L471 AbstractCegarLoop]: Abstraction has 496 states and 725 transitions. [2024-12-02 07:29:22,392 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 07:29:22,392 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 725 transitions. [2024-12-02 07:29:22,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-12-02 07:29:22,393 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:29:22,393 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:29:22,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 07:29:22,393 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:29:22,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:29:22,394 INFO L85 PathProgramCache]: Analyzing trace with hash 709116068, now seen corresponding path program 1 times [2024-12-02 07:29:22,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:29:22,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645924654] [2024-12-02 07:29:22,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:29:22,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:29:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:29:22,467 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 07:29:22,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:29:22,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645924654] [2024-12-02 07:29:22,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645924654] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:29:22,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:29:22,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:29:22,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999556815] [2024-12-02 07:29:22,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:29:22,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:29:22,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:29:22,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:29:22,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:29:22,469 INFO L87 Difference]: Start difference. First operand 496 states and 725 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 07:29:22,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:29:22,506 INFO L93 Difference]: Finished difference Result 1360 states and 2011 transitions. [2024-12-02 07:29:22,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:29:22,506 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 07:29:22,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:29:22,510 INFO L225 Difference]: With dead ends: 1360 [2024-12-02 07:29:22,510 INFO L226 Difference]: Without dead ends: 904 [2024-12-02 07:29:22,511 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 07:29:22,512 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 51 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 228 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 07:29:22,512 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 228 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:29:22,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2024-12-02 07:29:22,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 902. [2024-12-02 07:29:22,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 901 states have (on average 1.4572697003329633) internal successors, (1313), 901 states have internal predecessors, (1313), 0 states have call successors, (0), 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 07:29:22,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1313 transitions. [2024-12-02 07:29:22,553 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1313 transitions. Word has length 58 [2024-12-02 07:29:22,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:29:22,553 INFO L471 AbstractCegarLoop]: Abstraction has 902 states and 1313 transitions. [2024-12-02 07:29:22,553 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 07:29:22,553 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1313 transitions. [2024-12-02 07:29:22,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-12-02 07:29:22,554 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:29:22,554 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:29:22,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 07:29:22,554 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:29:22,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:29:22,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1804918364, now seen corresponding path program 1 times [2024-12-02 07:29:22,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:29:22,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847814891] [2024-12-02 07:29:22,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:29:22,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:29:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:29:22,626 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 07:29:22,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:29:22,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847814891] [2024-12-02 07:29:22,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847814891] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:29:22,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:29:22,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:29:22,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631546929] [2024-12-02 07:29:22,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:29:22,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:29:22,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:29:22,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:29:22,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:29:22,628 INFO L87 Difference]: Start difference. First operand 902 states and 1313 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 07:29:22,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:29:22,683 INFO L93 Difference]: Finished difference Result 2530 states and 3691 transitions. [2024-12-02 07:29:22,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:29:22,684 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 07:29:22,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:29:22,690 INFO L225 Difference]: With dead ends: 2530 [2024-12-02 07:29:22,691 INFO L226 Difference]: Without dead ends: 1668 [2024-12-02 07:29:22,692 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 07:29:22,692 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 49 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 230 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 07:29:22,693 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 230 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:29:22,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2024-12-02 07:29:22,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1666. [2024-12-02 07:29:22,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1666 states, 1665 states have (on average 1.4372372372372373) internal successors, (2393), 1665 states have internal predecessors, (2393), 0 states have call successors, (0), 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 07:29:22,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1666 states to 1666 states and 2393 transitions. [2024-12-02 07:29:22,770 INFO L78 Accepts]: Start accepts. Automaton has 1666 states and 2393 transitions. Word has length 58 [2024-12-02 07:29:22,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:29:22,770 INFO L471 AbstractCegarLoop]: Abstraction has 1666 states and 2393 transitions. [2024-12-02 07:29:22,771 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 07:29:22,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1666 states and 2393 transitions. [2024-12-02 07:29:22,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-12-02 07:29:22,771 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:29:22,771 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:29:22,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 07:29:22,772 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:29:22,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:29:22,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1686322852, now seen corresponding path program 1 times [2024-12-02 07:29:22,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:29:22,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963231397] [2024-12-02 07:29:22,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:29:22,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:29:22,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:29:22,846 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 07:29:22,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:29:22,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963231397] [2024-12-02 07:29:22,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963231397] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:29:22,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:29:22,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:29:22,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988742374] [2024-12-02 07:29:22,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:29:22,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:29:22,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:29:22,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:29:22,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:29:22,848 INFO L87 Difference]: Start difference. First operand 1666 states and 2393 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 07:29:22,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:29:22,944 INFO L93 Difference]: Finished difference Result 4726 states and 6763 transitions. [2024-12-02 07:29:22,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:29:22,945 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 07:29:22,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:29:22,956 INFO L225 Difference]: With dead ends: 4726 [2024-12-02 07:29:22,956 INFO L226 Difference]: Without dead ends: 3100 [2024-12-02 07:29:22,958 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 07:29:22,959 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 55 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 232 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 07:29:22,959 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 232 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:29:22,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3100 states. [2024-12-02 07:29:23,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3100 to 3098. [2024-12-02 07:29:23,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3098 states, 3097 states have (on average 1.4081369066838876) internal successors, (4361), 3097 states have internal predecessors, (4361), 0 states have call successors, (0), 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 07:29:23,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3098 states to 3098 states and 4361 transitions. [2024-12-02 07:29:23,073 INFO L78 Accepts]: Start accepts. Automaton has 3098 states and 4361 transitions. Word has length 58 [2024-12-02 07:29:23,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:29:23,073 INFO L471 AbstractCegarLoop]: Abstraction has 3098 states and 4361 transitions. [2024-12-02 07:29:23,073 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 07:29:23,074 INFO L276 IsEmpty]: Start isEmpty. Operand 3098 states and 4361 transitions. [2024-12-02 07:29:23,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-12-02 07:29:23,075 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:29:23,076 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:29:23,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 07:29:23,076 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:29:23,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:29:23,076 INFO L85 PathProgramCache]: Analyzing trace with hash 164806884, now seen corresponding path program 1 times [2024-12-02 07:29:23,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:29:23,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236792044] [2024-12-02 07:29:23,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:29:23,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:29:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:29:23,261 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 07:29:23,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:29:23,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236792044] [2024-12-02 07:29:23,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236792044] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:29:23,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:29:23,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:29:23,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419600257] [2024-12-02 07:29:23,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:29:23,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:29:23,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:29:23,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:29:23,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:29:23,263 INFO L87 Difference]: Start difference. First operand 3098 states and 4361 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:29:23,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:29:23,733 INFO L93 Difference]: Finished difference Result 18166 states and 25631 transitions. [2024-12-02 07:29:23,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:29:23,733 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-12-02 07:29:23,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:29:23,795 INFO L225 Difference]: With dead ends: 18166 [2024-12-02 07:29:23,795 INFO L226 Difference]: Without dead ends: 15988 [2024-12-02 07:29:23,801 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-12-02 07:29:23,801 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 556 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:29:23,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 720 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:29:23,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15988 states. [2024-12-02 07:29:24,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15988 to 5722. [2024-12-02 07:29:24,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5722 states, 5721 states have (on average 1.4027267960146828) internal successors, (8025), 5721 states have internal predecessors, (8025), 0 states have call successors, (0), 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 07:29:24,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5722 states to 5722 states and 8025 transitions. [2024-12-02 07:29:24,127 INFO L78 Accepts]: Start accepts. Automaton has 5722 states and 8025 transitions. Word has length 78 [2024-12-02 07:29:24,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:29:24,128 INFO L471 AbstractCegarLoop]: Abstraction has 5722 states and 8025 transitions. [2024-12-02 07:29:24,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:29:24,128 INFO L276 IsEmpty]: Start isEmpty. Operand 5722 states and 8025 transitions. [2024-12-02 07:29:24,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-12-02 07:29:24,130 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:29:24,130 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:29:24,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 07:29:24,131 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:29:24,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:29:24,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1666925284, now seen corresponding path program 1 times [2024-12-02 07:29:24,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:29:24,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400035354] [2024-12-02 07:29:24,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:29:24,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:29:24,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:29:24,295 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 07:29:24,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:29:24,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400035354] [2024-12-02 07:29:24,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400035354] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:29:24,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:29:24,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:29:24,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846073295] [2024-12-02 07:29:24,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:29:24,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:29:24,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:29:24,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:29:24,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:29:24,297 INFO L87 Difference]: Start difference. First operand 5722 states and 8025 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 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 07:29:24,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:29:24,834 INFO L93 Difference]: Finished difference Result 21222 states and 29919 transitions. [2024-12-02 07:29:24,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:29:24,834 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 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 78 [2024-12-02 07:29:24,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:29:24,883 INFO L225 Difference]: With dead ends: 21222 [2024-12-02 07:29:24,883 INFO L226 Difference]: Without dead ends: 18164 [2024-12-02 07:29:24,890 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-12-02 07:29:24,890 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 603 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:29:24,891 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 745 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:29:24,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18164 states. [2024-12-02 07:29:25,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18164 to 9866. [2024-12-02 07:29:25,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9866 states, 9865 states have (on average 1.3989863152559554) internal successors, (13801), 9865 states have internal predecessors, (13801), 0 states have call successors, (0), 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 07:29:25,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9866 states to 9866 states and 13801 transitions. [2024-12-02 07:29:25,425 INFO L78 Accepts]: Start accepts. Automaton has 9866 states and 13801 transitions. Word has length 78 [2024-12-02 07:29:25,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:29:25,426 INFO L471 AbstractCegarLoop]: Abstraction has 9866 states and 13801 transitions. [2024-12-02 07:29:25,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 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 07:29:25,426 INFO L276 IsEmpty]: Start isEmpty. Operand 9866 states and 13801 transitions. [2024-12-02 07:29:25,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-12-02 07:29:25,429 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:29:25,429 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:29:25,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 07:29:25,430 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:29:25,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:29:25,430 INFO L85 PathProgramCache]: Analyzing trace with hash -548543516, now seen corresponding path program 1 times [2024-12-02 07:29:25,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:29:25,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932202343] [2024-12-02 07:29:25,430 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:29:25,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:29:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:29:25,602 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 07:29:25,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:29:25,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932202343] [2024-12-02 07:29:25,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932202343] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:29:25,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:29:25,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:29:25,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570650740] [2024-12-02 07:29:25,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:29:25,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:29:25,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:29:25,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:29:25,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:29:25,604 INFO L87 Difference]: Start difference. First operand 9866 states and 13801 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 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 07:29:26,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:29:26,126 INFO L93 Difference]: Finished difference Result 24278 states and 34191 transitions. [2024-12-02 07:29:26,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:29:26,126 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 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) Word has length 78 [2024-12-02 07:29:26,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:29:26,171 INFO L225 Difference]: With dead ends: 24278 [2024-12-02 07:29:26,171 INFO L226 Difference]: Without dead ends: 21220 [2024-12-02 07:29:26,178 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-12-02 07:29:26,178 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 652 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:29:26,178 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 692 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:29:26,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21220 states. [2024-12-02 07:29:26,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21220 to 12922. [2024-12-02 07:29:26,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12922 states, 12921 states have (on average 1.3987307483940872) internal successors, (18073), 12921 states have internal predecessors, (18073), 0 states have call successors, (0), 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 07:29:26,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12922 states to 12922 states and 18073 transitions. [2024-12-02 07:29:26,651 INFO L78 Accepts]: Start accepts. Automaton has 12922 states and 18073 transitions. Word has length 78 [2024-12-02 07:29:26,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:29:26,651 INFO L471 AbstractCegarLoop]: Abstraction has 12922 states and 18073 transitions. [2024-12-02 07:29:26,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 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 07:29:26,651 INFO L276 IsEmpty]: Start isEmpty. Operand 12922 states and 18073 transitions. [2024-12-02 07:29:26,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-12-02 07:29:26,653 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:29:26,654 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:29:26,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 07:29:26,654 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:29:26,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:29:26,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1232389348, now seen corresponding path program 1 times [2024-12-02 07:29:26,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:29:26,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926063680] [2024-12-02 07:29:26,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:29:26,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:29:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:29:26,816 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 07:29:26,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:29:26,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926063680] [2024-12-02 07:29:26,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926063680] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:29:26,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:29:26,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:29:26,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150259743] [2024-12-02 07:29:26,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:29:26,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:29:26,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:29:26,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:29:26,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:29:26,818 INFO L87 Difference]: Start difference. First operand 12922 states and 18073 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 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 07:29:27,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:29:27,349 INFO L93 Difference]: Finished difference Result 27334 states and 38463 transitions. [2024-12-02 07:29:27,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:29:27,350 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 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 78 [2024-12-02 07:29:27,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:29:27,400 INFO L225 Difference]: With dead ends: 27334 [2024-12-02 07:29:27,400 INFO L226 Difference]: Without dead ends: 24276 [2024-12-02 07:29:27,407 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-12-02 07:29:27,407 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 606 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:29:27,408 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [606 Valid, 736 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:29:27,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24276 states. [2024-12-02 07:29:28,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24276 to 15978. [2024-12-02 07:29:28,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15978 states, 15977 states have (on average 1.398572948613632) internal successors, (22345), 15977 states have internal predecessors, (22345), 0 states have call successors, (0), 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 07:29:28,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15978 states to 15978 states and 22345 transitions. [2024-12-02 07:29:28,082 INFO L78 Accepts]: Start accepts. Automaton has 15978 states and 22345 transitions. Word has length 78 [2024-12-02 07:29:28,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:29:28,083 INFO L471 AbstractCegarLoop]: Abstraction has 15978 states and 22345 transitions. [2024-12-02 07:29:28,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 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 07:29:28,084 INFO L276 IsEmpty]: Start isEmpty. Operand 15978 states and 22345 transitions. [2024-12-02 07:29:28,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-12-02 07:29:28,087 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:29:28,087 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:29:28,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 07:29:28,087 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:29:28,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:29:28,088 INFO L85 PathProgramCache]: Analyzing trace with hash 428663268, now seen corresponding path program 1 times [2024-12-02 07:29:28,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:29:28,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954289986] [2024-12-02 07:29:28,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:29:28,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:29:28,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:29:28,273 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 07:29:28,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:29:28,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954289986] [2024-12-02 07:29:28,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954289986] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:29:28,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:29:28,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:29:28,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586865323] [2024-12-02 07:29:28,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:29:28,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:29:28,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:29:28,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:29:28,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:29:28,275 INFO L87 Difference]: Start difference. First operand 15978 states and 22345 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 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 07:29:28,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:29:28,849 INFO L93 Difference]: Finished difference Result 30390 states and 42735 transitions. [2024-12-02 07:29:28,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:29:28,850 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 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 78 [2024-12-02 07:29:28,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:29:28,878 INFO L225 Difference]: With dead ends: 30390 [2024-12-02 07:29:28,878 INFO L226 Difference]: Without dead ends: 27332 [2024-12-02 07:29:28,883 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-12-02 07:29:28,883 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 558 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:29:28,884 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 833 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:29:28,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27332 states. [2024-12-02 07:29:29,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27332 to 19034. [2024-12-02 07:29:29,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19034 states, 19033 states have (on average 1.3984658225187832) internal successors, (26617), 19033 states have internal predecessors, (26617), 0 states have call successors, (0), 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 07:29:29,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19034 states to 19034 states and 26617 transitions. [2024-12-02 07:29:29,279 INFO L78 Accepts]: Start accepts. Automaton has 19034 states and 26617 transitions. Word has length 78 [2024-12-02 07:29:29,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:29:29,279 INFO L471 AbstractCegarLoop]: Abstraction has 19034 states and 26617 transitions. [2024-12-02 07:29:29,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 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 07:29:29,279 INFO L276 IsEmpty]: Start isEmpty. Operand 19034 states and 26617 transitions. [2024-12-02 07:29:29,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-12-02 07:29:29,281 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:29:29,281 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:29:29,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 07:29:29,281 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:29:29,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:29:29,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1829432196, now seen corresponding path program 1 times [2024-12-02 07:29:29,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:29:29,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140912763] [2024-12-02 07:29:29,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:29:29,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:29:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:29:29,351 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:29:29,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:29:29,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140912763] [2024-12-02 07:29:29,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140912763] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:29:29,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:29:29,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:29:29,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084090681] [2024-12-02 07:29:29,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:29:29,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:29:29,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:29:29,352 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:29:29,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:29:29,353 INFO L87 Difference]: Start difference. First operand 19034 states and 26617 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 07:29:29,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:29:29,645 INFO L93 Difference]: Finished difference Result 38030 states and 53195 transitions. [2024-12-02 07:29:29,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:29:29,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-12-02 07:29:29,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:29:29,667 INFO L225 Difference]: With dead ends: 38030 [2024-12-02 07:29:29,667 INFO L226 Difference]: Without dead ends: 19036 [2024-12-02 07:29:29,677 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 07:29:29,678 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 45 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 233 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 07:29:29,678 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 233 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:29:29,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19036 states. [2024-12-02 07:29:30,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19036 to 19034. [2024-12-02 07:29:30,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19034 states, 19033 states have (on average 1.382913886407818) internal successors, (26321), 19033 states have internal predecessors, (26321), 0 states have call successors, (0), 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 07:29:30,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19034 states to 19034 states and 26321 transitions. [2024-12-02 07:29:30,201 INFO L78 Accepts]: Start accepts. Automaton has 19034 states and 26321 transitions. Word has length 79 [2024-12-02 07:29:30,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:29:30,202 INFO L471 AbstractCegarLoop]: Abstraction has 19034 states and 26321 transitions. [2024-12-02 07:29:30,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 07:29:30,202 INFO L276 IsEmpty]: Start isEmpty. Operand 19034 states and 26321 transitions. [2024-12-02 07:29:30,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-12-02 07:29:30,205 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:29:30,205 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:29:30,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 07:29:30,205 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:29:30,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:29:30,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1720663204, now seen corresponding path program 1 times [2024-12-02 07:29:30,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:29:30,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797774125] [2024-12-02 07:29:30,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:29:30,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:29:30,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:29:30,332 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:29:30,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:29:30,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797774125] [2024-12-02 07:29:30,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797774125] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:29:30,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:29:30,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:29:30,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335338664] [2024-12-02 07:29:30,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:29:30,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:29:30,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:29:30,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:29:30,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:29:30,334 INFO L87 Difference]: Start difference. First operand 19034 states and 26321 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:29:30,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:29:30,600 INFO L93 Difference]: Finished difference Result 26130 states and 36224 transitions. [2024-12-02 07:29:30,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:29:30,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-12-02 07:29:30,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:29:30,611 INFO L225 Difference]: With dead ends: 26130 [2024-12-02 07:29:30,611 INFO L226 Difference]: Without dead ends: 7136 [2024-12-02 07:29:30,624 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 07:29:30,624 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 39 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 230 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 07:29:30,624 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 230 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:29:30,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7136 states. [2024-12-02 07:29:30,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7136 to 7127. [2024-12-02 07:29:30,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7127 states, 7126 states have (on average 1.3794555150154364) internal successors, (9830), 7126 states have internal predecessors, (9830), 0 states have call successors, (0), 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 07:29:30,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7127 states to 7127 states and 9830 transitions. [2024-12-02 07:29:30,908 INFO L78 Accepts]: Start accepts. Automaton has 7127 states and 9830 transitions. Word has length 80 [2024-12-02 07:29:30,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:29:30,908 INFO L471 AbstractCegarLoop]: Abstraction has 7127 states and 9830 transitions. [2024-12-02 07:29:30,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:29:30,909 INFO L276 IsEmpty]: Start isEmpty. Operand 7127 states and 9830 transitions. [2024-12-02 07:29:30,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-12-02 07:29:30,911 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:29:30,911 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:29:30,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 07:29:30,911 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:29:30,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:29:30,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1579763082, now seen corresponding path program 1 times [2024-12-02 07:29:30,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:29:30,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866855634] [2024-12-02 07:29:30,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:29:30,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:29:30,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:29:31,036 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:29:31,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:29:31,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866855634] [2024-12-02 07:29:31,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866855634] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:29:31,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:29:31,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:29:31,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087485104] [2024-12-02 07:29:31,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:29:31,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:29:31,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:29:31,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:29:31,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:29:31,037 INFO L87 Difference]: Start difference. First operand 7127 states and 9830 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:29:31,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:29:31,164 INFO L93 Difference]: Finished difference Result 10667 states and 14720 transitions. [2024-12-02 07:29:31,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:29:31,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-12-02 07:29:31,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:29:31,170 INFO L225 Difference]: With dead ends: 10667 [2024-12-02 07:29:31,170 INFO L226 Difference]: Without dead ends: 3593 [2024-12-02 07:29:31,175 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 07:29:31,176 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 41 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 209 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 07:29:31,176 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 209 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:29:31,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3593 states. [2024-12-02 07:29:31,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3593 to 3591. [2024-12-02 07:29:31,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3591 states, 3590 states have (on average 1.3621169916434541) internal successors, (4890), 3590 states have internal predecessors, (4890), 0 states have call successors, (0), 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 07:29:31,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3591 states to 3591 states and 4890 transitions. [2024-12-02 07:29:31,316 INFO L78 Accepts]: Start accepts. Automaton has 3591 states and 4890 transitions. Word has length 81 [2024-12-02 07:29:31,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:29:31,316 INFO L471 AbstractCegarLoop]: Abstraction has 3591 states and 4890 transitions. [2024-12-02 07:29:31,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:29:31,316 INFO L276 IsEmpty]: Start isEmpty. Operand 3591 states and 4890 transitions. [2024-12-02 07:29:31,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-12-02 07:29:31,317 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:29:31,318 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:29:31,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 07:29:31,318 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:29:31,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:29:31,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1460768744, now seen corresponding path program 1 times [2024-12-02 07:29:31,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:29:31,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53437787] [2024-12-02 07:29:31,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:29:31,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:29:31,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:29:31,437 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:29:31,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:29:31,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53437787] [2024-12-02 07:29:31,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53437787] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:29:31,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:29:31,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:29:31,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731065032] [2024-12-02 07:29:31,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:29:31,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:29:31,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:29:31,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:29:31,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:29:31,439 INFO L87 Difference]: Start difference. First operand 3591 states and 4890 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 07:29:31,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:29:31,504 INFO L93 Difference]: Finished difference Result 5363 states and 7310 transitions. [2024-12-02 07:29:31,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:29:31,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2024-12-02 07:29:31,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:29:31,508 INFO L225 Difference]: With dead ends: 5363 [2024-12-02 07:29:31,508 INFO L226 Difference]: Without dead ends: 1825 [2024-12-02 07:29:31,510 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 07:29:31,510 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 38 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 194 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 07:29:31,511 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 194 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:29:31,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1825 states. [2024-12-02 07:29:31,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1825 to 1823. [2024-12-02 07:29:31,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1823 states, 1822 states have (on average 1.3424807903402853) internal successors, (2446), 1822 states have internal predecessors, (2446), 0 states have call successors, (0), 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 07:29:31,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1823 states to 1823 states and 2446 transitions. [2024-12-02 07:29:31,578 INFO L78 Accepts]: Start accepts. Automaton has 1823 states and 2446 transitions. Word has length 83 [2024-12-02 07:29:31,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:29:31,579 INFO L471 AbstractCegarLoop]: Abstraction has 1823 states and 2446 transitions. [2024-12-02 07:29:31,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 07:29:31,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1823 states and 2446 transitions. [2024-12-02 07:29:31,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-12-02 07:29:31,580 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:29:31,580 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:29:31,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 07:29:31,580 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:29:31,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:29:31,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1888914394, now seen corresponding path program 1 times [2024-12-02 07:29:31,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:29:31,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170023523] [2024-12-02 07:29:31,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:29:31,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:29:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:29:31,708 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:29:31,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:29:31,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170023523] [2024-12-02 07:29:31,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170023523] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:29:31,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:29:31,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:29:31,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266417528] [2024-12-02 07:29:31,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:29:31,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:29:31,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:29:31,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:29:31,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:29:31,710 INFO L87 Difference]: Start difference. First operand 1823 states and 2446 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 07:29:31,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:29:31,749 INFO L93 Difference]: Finished difference Result 2711 states and 3644 transitions. [2024-12-02 07:29:31,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:29:31,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2024-12-02 07:29:31,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:29:31,752 INFO L225 Difference]: With dead ends: 2711 [2024-12-02 07:29:31,752 INFO L226 Difference]: Without dead ends: 941 [2024-12-02 07:29:31,753 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 07:29:31,754 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 35 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 179 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 07:29:31,754 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 179 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:29:31,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2024-12-02 07:29:31,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 939. [2024-12-02 07:29:31,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 939 states, 938 states have (on average 1.3187633262260128) internal successors, (1237), 938 states have internal predecessors, (1237), 0 states have call successors, (0), 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 07:29:31,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1237 transitions. [2024-12-02 07:29:31,789 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1237 transitions. Word has length 85 [2024-12-02 07:29:31,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:29:31,789 INFO L471 AbstractCegarLoop]: Abstraction has 939 states and 1237 transitions. [2024-12-02 07:29:31,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 07:29:31,790 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1237 transitions. [2024-12-02 07:29:31,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-12-02 07:29:31,790 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:29:31,790 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:29:31,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 07:29:31,791 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:29:31,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:29:31,791 INFO L85 PathProgramCache]: Analyzing trace with hash -911684020, now seen corresponding path program 1 times [2024-12-02 07:29:31,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:29:31,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173371355] [2024-12-02 07:29:31,791 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:29:31,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:29:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:29:31,934 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 07:29:31,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:29:31,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173371355] [2024-12-02 07:29:31,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173371355] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:29:31,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188314790] [2024-12-02 07:29:31,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:29:31,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:29:31,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:29:31,937 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:29:31,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 07:29:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:29:32,075 INFO L256 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 07:29:32,080 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:29:32,373 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:29:32,373 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:29:32,907 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:29:32,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188314790] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:29:32,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:29:32,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 6] total 13 [2024-12-02 07:29:32,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025638279] [2024-12-02 07:29:32,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:29:32,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 07:29:32,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:29:32,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 07:29:32,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2024-12-02 07:29:32,909 INFO L87 Difference]: Start difference. First operand 939 states and 1237 transitions. Second operand has 13 states, 13 states have (on average 18.846153846153847) internal successors, (245), 13 states have internal predecessors, (245), 0 states have call successors, (0), 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 07:29:33,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:29:33,179 INFO L93 Difference]: Finished difference Result 3872 states and 5113 transitions. [2024-12-02 07:29:33,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 07:29:33,181 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 18.846153846153847) internal successors, (245), 13 states have internal predecessors, (245), 0 states have call successors, (0), 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 87 [2024-12-02 07:29:33,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:29:33,185 INFO L225 Difference]: With dead ends: 3872 [2024-12-02 07:29:33,185 INFO L226 Difference]: Without dead ends: 2958 [2024-12-02 07:29:33,186 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=127, Unknown=0, NotChecked=0, Total=210 [2024-12-02 07:29:33,188 INFO L435 NwaCegarLoop]: 171 mSDtfsCounter, 400 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:29:33,188 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 970 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 07:29:33,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2024-12-02 07:29:33,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 2882. [2024-12-02 07:29:33,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2882 states, 2881 states have (on average 1.291218326969802) internal successors, (3720), 2881 states have internal predecessors, (3720), 0 states have call successors, (0), 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 07:29:33,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 3720 transitions. [2024-12-02 07:29:33,283 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 3720 transitions. Word has length 87 [2024-12-02 07:29:33,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:29:33,284 INFO L471 AbstractCegarLoop]: Abstraction has 2882 states and 3720 transitions. [2024-12-02 07:29:33,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 18.846153846153847) internal successors, (245), 13 states have internal predecessors, (245), 0 states have call successors, (0), 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 07:29:33,284 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 3720 transitions. [2024-12-02 07:29:33,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-12-02 07:29:33,285 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:29:33,285 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:29:33,294 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 07:29:33,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-12-02 07:29:33,485 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:29:33,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:29:33,486 INFO L85 PathProgramCache]: Analyzing trace with hash 54120340, now seen corresponding path program 1 times [2024-12-02 07:29:33,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:29:33,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114366128] [2024-12-02 07:29:33,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:29:33,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:29:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:29:34,311 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:29:34,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:29:34,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114366128] [2024-12-02 07:29:34,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114366128] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:29:34,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792736442] [2024-12-02 07:29:34,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:29:34,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:29:34,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:29:34,313 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:29:34,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 07:29:34,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:29:34,450 INFO L256 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 07:29:34,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:29:34,993 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:29:34,993 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:29:35,985 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:29:35,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792736442] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:29:35,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:29:35,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2024-12-02 07:29:35,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333412260] [2024-12-02 07:29:35,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:29:35,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-12-02 07:29:35,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:29:35,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-12-02 07:29:35,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2024-12-02 07:29:35,986 INFO L87 Difference]: Start difference. First operand 2882 states and 3720 transitions. Second operand has 26 states, 26 states have (on average 8.576923076923077) internal successors, (223), 25 states have internal predecessors, (223), 0 states have call successors, (0), 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 07:29:36,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:29:36,623 INFO L93 Difference]: Finished difference Result 8434 states and 10942 transitions. [2024-12-02 07:29:36,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 07:29:36,624 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 8.576923076923077) internal successors, (223), 25 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2024-12-02 07:29:36,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:29:36,629 INFO L225 Difference]: With dead ends: 8434 [2024-12-02 07:29:36,630 INFO L226 Difference]: Without dead ends: 5788 [2024-12-02 07:29:36,632 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=292, Invalid=1040, Unknown=0, NotChecked=0, Total=1332 [2024-12-02 07:29:36,633 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 1154 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1154 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:29:36,633 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1154 Valid, 589 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 07:29:36,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5788 states. [2024-12-02 07:29:36,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5788 to 5710. [2024-12-02 07:29:36,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5710 states, 5709 states have (on average 1.276580837274479) internal successors, (7288), 5709 states have internal predecessors, (7288), 0 states have call successors, (0), 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 07:29:36,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5710 states to 5710 states and 7288 transitions. [2024-12-02 07:29:36,766 INFO L78 Accepts]: Start accepts. Automaton has 5710 states and 7288 transitions. Word has length 88 [2024-12-02 07:29:36,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:29:36,766 INFO L471 AbstractCegarLoop]: Abstraction has 5710 states and 7288 transitions. [2024-12-02 07:29:36,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.576923076923077) internal successors, (223), 25 states have internal predecessors, (223), 0 states have call successors, (0), 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 07:29:36,766 INFO L276 IsEmpty]: Start isEmpty. Operand 5710 states and 7288 transitions. [2024-12-02 07:29:36,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-12-02 07:29:36,767 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:29:36,767 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:29:36,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 07:29:36,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-12-02 07:29:36,967 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:29:36,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:29:36,968 INFO L85 PathProgramCache]: Analyzing trace with hash 474297606, now seen corresponding path program 1 times [2024-12-02 07:29:36,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:29:36,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098013367] [2024-12-02 07:29:36,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:29:36,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:29:37,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:29:37,309 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:29:37,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:29:37,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098013367] [2024-12-02 07:29:37,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098013367] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:29:37,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128547144] [2024-12-02 07:29:37,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:29:37,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:29:37,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:29:37,312 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:29:37,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 07:29:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:29:37,444 INFO L256 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 07:29:37,446 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:29:37,828 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:29:37,828 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:29:38,504 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:29:38,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128547144] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:29:38,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:29:38,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2024-12-02 07:29:38,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371523242] [2024-12-02 07:29:38,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:29:38,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-12-02 07:29:38,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:29:38,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-12-02 07:29:38,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2024-12-02 07:29:38,506 INFO L87 Difference]: Start difference. First operand 5710 states and 7288 transitions. Second operand has 26 states, 26 states have (on average 8.846153846153847) internal successors, (230), 25 states have internal predecessors, (230), 0 states have call successors, (0), 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 07:29:40,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:29:40,335 INFO L93 Difference]: Finished difference Result 27901 states and 35812 transitions. [2024-12-02 07:29:40,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 07:29:40,336 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 8.846153846153847) internal successors, (230), 25 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2024-12-02 07:29:40,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:29:40,350 INFO L225 Difference]: With dead ends: 27901 [2024-12-02 07:29:40,350 INFO L226 Difference]: Without dead ends: 22355 [2024-12-02 07:29:40,356 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=643, Invalid=2327, Unknown=0, NotChecked=0, Total=2970 [2024-12-02 07:29:40,357 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 1847 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1847 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:29:40,357 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1847 Valid, 771 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 07:29:40,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22355 states. [2024-12-02 07:29:40,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22355 to 22063. [2024-12-02 07:29:40,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22063 states, 22062 states have (on average 1.2555525337684708) internal successors, (27700), 22062 states have internal predecessors, (27700), 0 states have call successors, (0), 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 07:29:40,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22063 states to 22063 states and 27700 transitions. [2024-12-02 07:29:40,844 INFO L78 Accepts]: Start accepts. Automaton has 22063 states and 27700 transitions. Word has length 88 [2024-12-02 07:29:40,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:29:40,844 INFO L471 AbstractCegarLoop]: Abstraction has 22063 states and 27700 transitions. [2024-12-02 07:29:40,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.846153846153847) internal successors, (230), 25 states have internal predecessors, (230), 0 states have call successors, (0), 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 07:29:40,845 INFO L276 IsEmpty]: Start isEmpty. Operand 22063 states and 27700 transitions. [2024-12-02 07:29:40,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-12-02 07:29:40,845 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:29:40,846 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:29:40,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 07:29:41,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:29:41,046 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:29:41,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:29:41,047 INFO L85 PathProgramCache]: Analyzing trace with hash 774171182, now seen corresponding path program 1 times [2024-12-02 07:29:41,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:29:41,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200619669] [2024-12-02 07:29:41,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:29:41,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:29:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:29:41,338 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:29:41,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:29:41,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200619669] [2024-12-02 07:29:41,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200619669] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:29:41,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123969537] [2024-12-02 07:29:41,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:29:41,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:29:41,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:29:41,340 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:29:41,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 07:29:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:29:41,446 INFO L256 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 07:29:41,448 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:29:41,841 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:29:41,841 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:29:42,717 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:29:42,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123969537] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:29:42,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:29:42,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2024-12-02 07:29:42,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281277981] [2024-12-02 07:29:42,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:29:42,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-12-02 07:29:42,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:29:42,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-12-02 07:29:42,718 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2024-12-02 07:29:42,719 INFO L87 Difference]: Start difference. First operand 22063 states and 27700 transitions. Second operand has 26 states, 26 states have (on average 9.73076923076923) internal successors, (253), 25 states have internal predecessors, (253), 0 states have call successors, (0), 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 07:29:45,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:29:45,992 INFO L93 Difference]: Finished difference Result 110754 states and 140081 transitions. [2024-12-02 07:29:45,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-12-02 07:29:45,993 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.73076923076923) internal successors, (253), 25 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2024-12-02 07:29:45,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:29:46,063 INFO L225 Difference]: With dead ends: 110754 [2024-12-02 07:29:46,063 INFO L226 Difference]: Without dead ends: 89921 [2024-12-02 07:29:46,082 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=656, Invalid=2536, Unknown=0, NotChecked=0, Total=3192 [2024-12-02 07:29:46,082 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 1179 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 07:29:46,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1179 Valid, 1274 Invalid, 1353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 07:29:46,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89921 states. [2024-12-02 07:29:47,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89921 to 88757. [2024-12-02 07:29:47,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88757 states, 88756 states have (on average 1.2302492225877688) internal successors, (109192), 88756 states have internal predecessors, (109192), 0 states have call successors, (0), 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 07:29:48,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88757 states to 88757 states and 109192 transitions. [2024-12-02 07:29:48,184 INFO L78 Accepts]: Start accepts. Automaton has 88757 states and 109192 transitions. Word has length 89 [2024-12-02 07:29:48,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:29:48,185 INFO L471 AbstractCegarLoop]: Abstraction has 88757 states and 109192 transitions. [2024-12-02 07:29:48,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.73076923076923) internal successors, (253), 25 states have internal predecessors, (253), 0 states have call successors, (0), 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 07:29:48,185 INFO L276 IsEmpty]: Start isEmpty. Operand 88757 states and 109192 transitions. [2024-12-02 07:29:48,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-12-02 07:29:48,186 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:29:48,186 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:29:48,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 07:29:48,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-02 07:29:48,387 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:29:48,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:29:48,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1260141666, now seen corresponding path program 1 times [2024-12-02 07:29:48,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:29:48,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528583748] [2024-12-02 07:29:48,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:29:48,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:29:48,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:29:49,103 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:29:49,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:29:49,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528583748] [2024-12-02 07:29:49,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528583748] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:29:49,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303901166] [2024-12-02 07:29:49,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:29:49,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:29:49,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:29:49,105 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:29:49,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 07:29:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:29:49,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-12-02 07:29:49,231 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:29:52,799 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:29:52,799 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:29:55,996 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:29:55,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303901166] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:29:55,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:29:55,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 18, 16] total 42 [2024-12-02 07:29:55,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109649392] [2024-12-02 07:29:55,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:29:55,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-12-02 07:29:55,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:29:55,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-12-02 07:29:55,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1547, Unknown=0, NotChecked=0, Total=1722 [2024-12-02 07:29:55,998 INFO L87 Difference]: Start difference. First operand 88757 states and 109192 transitions. Second operand has 42 states, 42 states have (on average 6.0) internal successors, (252), 42 states have internal predecessors, (252), 0 states have call successors, (0), 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 07:30:31,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:30:31,745 INFO L93 Difference]: Finished difference Result 274006 states and 338828 transitions. [2024-12-02 07:30:31,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2024-12-02 07:30:31,745 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 6.0) internal successors, (252), 42 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2024-12-02 07:30:31,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:30:31,941 INFO L225 Difference]: With dead ends: 274006 [2024-12-02 07:30:31,941 INFO L226 Difference]: Without dead ends: 227149 [2024-12-02 07:30:31,985 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21231 ImplicationChecksByTransitivity, 27.5s TimeCoverageRelationStatistics Valid=7385, Invalid=45745, Unknown=0, NotChecked=0, Total=53130 [2024-12-02 07:30:31,985 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 5590 mSDsluCounter, 3333 mSDsCounter, 0 mSdLazyCounter, 4937 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5590 SdHoareTripleChecker+Valid, 3463 SdHoareTripleChecker+Invalid, 5064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 4937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-12-02 07:30:31,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5590 Valid, 3463 Invalid, 5064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 4937 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-12-02 07:30:32,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227149 states. [2024-12-02 07:30:36,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227149 to 93609. [2024-12-02 07:30:36,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93609 states, 93608 states have (on average 1.2317536962652764) internal successors, (115302), 93608 states have internal predecessors, (115302), 0 states have call successors, (0), 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 07:30:36,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93609 states to 93609 states and 115302 transitions. [2024-12-02 07:30:36,441 INFO L78 Accepts]: Start accepts. Automaton has 93609 states and 115302 transitions. Word has length 91 [2024-12-02 07:30:36,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:30:36,441 INFO L471 AbstractCegarLoop]: Abstraction has 93609 states and 115302 transitions. [2024-12-02 07:30:36,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 6.0) internal successors, (252), 42 states have internal predecessors, (252), 0 states have call successors, (0), 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 07:30:36,441 INFO L276 IsEmpty]: Start isEmpty. Operand 93609 states and 115302 transitions. [2024-12-02 07:30:36,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-12-02 07:30:36,442 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:30:36,442 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:30:36,448 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 07:30:36,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-02 07:30:36,643 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:30:36,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:30:36,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1092304042, now seen corresponding path program 1 times [2024-12-02 07:30:36,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:30:36,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254714662] [2024-12-02 07:30:36,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:30:36,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:30:36,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:30:37,347 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:30:37,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:30:37,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254714662] [2024-12-02 07:30:37,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254714662] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:30:37,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246183136] [2024-12-02 07:30:37,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:30:37,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:30:37,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:30:37,349 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:30:37,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 07:30:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:30:37,492 INFO L256 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-12-02 07:30:37,495 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:30:38,612 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:30:38,613 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:30:40,579 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:30:40,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246183136] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:30:40,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:30:40,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17, 16] total 41 [2024-12-02 07:30:40,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072388851] [2024-12-02 07:30:40,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:30:40,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-12-02 07:30:40,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:30:40,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-12-02 07:30:40,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1476, Unknown=0, NotChecked=0, Total=1640 [2024-12-02 07:30:40,581 INFO L87 Difference]: Start difference. First operand 93609 states and 115302 transitions. Second operand has 41 states, 41 states have (on average 5.560975609756097) internal successors, (228), 41 states have internal predecessors, (228), 0 states have call successors, (0), 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 07:30:47,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:30:47,707 INFO L93 Difference]: Finished difference Result 171728 states and 211559 transitions. [2024-12-02 07:30:47,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-12-02 07:30:47,708 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 5.560975609756097) internal successors, (228), 41 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2024-12-02 07:30:47,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:30:47,804 INFO L225 Difference]: With dead ends: 171728 [2024-12-02 07:30:47,804 INFO L226 Difference]: Without dead ends: 120486 [2024-12-02 07:30:47,826 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2327 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1819, Invalid=7111, Unknown=0, NotChecked=0, Total=8930 [2024-12-02 07:30:47,827 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 3390 mSDsluCounter, 1817 mSDsCounter, 0 mSdLazyCounter, 1674 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3390 SdHoareTripleChecker+Valid, 1938 SdHoareTripleChecker+Invalid, 1762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:30:47,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3390 Valid, 1938 Invalid, 1762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1674 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 07:30:47,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120486 states. [2024-12-02 07:30:51,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120486 to 69896. [2024-12-02 07:30:51,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69896 states, 69895 states have (on average 1.2228914800772588) internal successors, (85474), 69895 states have internal predecessors, (85474), 0 states have call successors, (0), 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 07:30:51,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69896 states to 69896 states and 85474 transitions. [2024-12-02 07:30:51,198 INFO L78 Accepts]: Start accepts. Automaton has 69896 states and 85474 transitions. Word has length 91 [2024-12-02 07:30:51,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:30:51,198 INFO L471 AbstractCegarLoop]: Abstraction has 69896 states and 85474 transitions. [2024-12-02 07:30:51,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 5.560975609756097) internal successors, (228), 41 states have internal predecessors, (228), 0 states have call successors, (0), 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 07:30:51,199 INFO L276 IsEmpty]: Start isEmpty. Operand 69896 states and 85474 transitions. [2024-12-02 07:30:51,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-12-02 07:30:51,200 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:30:51,200 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:30:51,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 07:30:51,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 07:30:51,401 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:30:51,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:30:51,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1528410544, now seen corresponding path program 1 times [2024-12-02 07:30:51,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:30:51,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257210972] [2024-12-02 07:30:51,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:30:51,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:30:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:30:52,090 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:30:52,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:30:52,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257210972] [2024-12-02 07:30:52,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257210972] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:30:52,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318989533] [2024-12-02 07:30:52,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:30:52,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:30:52,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:30:52,092 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:30:52,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 07:30:52,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:30:52,207 INFO L256 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-12-02 07:30:52,209 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:30:54,912 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:30:54,912 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:30:56,774 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:30:56,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318989533] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:30:56,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:30:56,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 19, 19] total 45 [2024-12-02 07:30:56,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392867493] [2024-12-02 07:30:56,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:30:56,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-12-02 07:30:56,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:30:56,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-12-02 07:30:56,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=1719, Unknown=0, NotChecked=0, Total=1980 [2024-12-02 07:30:56,776 INFO L87 Difference]: Start difference. First operand 69896 states and 85474 transitions. Second operand has 45 states, 45 states have (on average 5.4222222222222225) internal successors, (244), 45 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 07:31:04,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:31:04,203 INFO L93 Difference]: Finished difference Result 148698 states and 181671 transitions. [2024-12-02 07:31:04,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-12-02 07:31:04,203 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 5.4222222222222225) internal successors, (244), 45 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 93 [2024-12-02 07:31:04,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:31:04,323 INFO L225 Difference]: With dead ends: 148698 [2024-12-02 07:31:04,323 INFO L226 Difference]: Without dead ends: 119505 [2024-12-02 07:31:04,345 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1668 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1407, Invalid=5235, Unknown=0, NotChecked=0, Total=6642 [2024-12-02 07:31:04,345 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 4042 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 1227 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4042 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:31:04,345 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4042 Valid, 1182 Invalid, 1285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1227 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 07:31:04,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119505 states. [2024-12-02 07:31:06,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119505 to 46424. [2024-12-02 07:31:06,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46424 states, 46423 states have (on average 1.2185769984705856) internal successors, (56570), 46423 states have internal predecessors, (56570), 0 states have call successors, (0), 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 07:31:06,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46424 states to 46424 states and 56570 transitions. [2024-12-02 07:31:06,630 INFO L78 Accepts]: Start accepts. Automaton has 46424 states and 56570 transitions. Word has length 93 [2024-12-02 07:31:06,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:31:06,630 INFO L471 AbstractCegarLoop]: Abstraction has 46424 states and 56570 transitions. [2024-12-02 07:31:06,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.4222222222222225) internal successors, (244), 45 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 07:31:06,631 INFO L276 IsEmpty]: Start isEmpty. Operand 46424 states and 56570 transitions. [2024-12-02 07:31:06,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-12-02 07:31:06,634 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:31:06,634 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:31:06,640 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 07:31:06,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 07:31:06,835 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:31:06,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:31:06,835 INFO L85 PathProgramCache]: Analyzing trace with hash 410831778, now seen corresponding path program 1 times [2024-12-02 07:31:06,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:31:06,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539449409] [2024-12-02 07:31:06,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:31:06,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:31:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:31:07,450 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 30 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:31:07,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:31:07,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539449409] [2024-12-02 07:31:07,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539449409] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:31:07,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964503406] [2024-12-02 07:31:07,450 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:31:07,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:31:07,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:31:07,452 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:31:07,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 07:31:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:31:07,610 INFO L256 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 07:31:07,611 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:31:08,732 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 47 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:31:08,732 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:31:10,966 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 38 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:31:10,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964503406] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:31:10,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:31:10,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 14] total 37 [2024-12-02 07:31:10,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096813071] [2024-12-02 07:31:10,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:31:10,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-12-02 07:31:10,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:31:10,967 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-12-02 07:31:10,967 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1235, Unknown=0, NotChecked=0, Total=1406 [2024-12-02 07:31:10,967 INFO L87 Difference]: Start difference. First operand 46424 states and 56570 transitions. Second operand has 38 states, 38 states have (on average 10.31578947368421) internal successors, (392), 37 states have internal predecessors, (392), 0 states have call successors, (0), 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 07:31:17,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:31:17,471 INFO L93 Difference]: Finished difference Result 91673 states and 112708 transitions. [2024-12-02 07:31:17,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-12-02 07:31:17,472 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 10.31578947368421) internal successors, (392), 37 states have internal predecessors, (392), 0 states have call successors, (0), 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 143 [2024-12-02 07:31:17,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:31:17,511 INFO L225 Difference]: With dead ends: 91673 [2024-12-02 07:31:17,511 INFO L226 Difference]: Without dead ends: 54716 [2024-12-02 07:31:17,528 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1526 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1455, Invalid=6027, Unknown=0, NotChecked=0, Total=7482 [2024-12-02 07:31:17,528 INFO L435 NwaCegarLoop]: 93 mSDtfsCounter, 2201 mSDsluCounter, 1288 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2201 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 07:31:17,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2201 Valid, 1381 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1338 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 07:31:17,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54716 states. [2024-12-02 07:31:19,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54716 to 31928. [2024-12-02 07:31:19,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31928 states, 31927 states have (on average 1.2051241895574278) internal successors, (38476), 31927 states have internal predecessors, (38476), 0 states have call successors, (0), 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 07:31:19,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31928 states to 31928 states and 38476 transitions. [2024-12-02 07:31:19,293 INFO L78 Accepts]: Start accepts. Automaton has 31928 states and 38476 transitions. Word has length 143 [2024-12-02 07:31:19,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:31:19,293 INFO L471 AbstractCegarLoop]: Abstraction has 31928 states and 38476 transitions. [2024-12-02 07:31:19,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 10.31578947368421) internal successors, (392), 37 states have internal predecessors, (392), 0 states have call successors, (0), 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 07:31:19,293 INFO L276 IsEmpty]: Start isEmpty. Operand 31928 states and 38476 transitions. [2024-12-02 07:31:19,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-12-02 07:31:19,297 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:31:19,298 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:31:19,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 07:31:19,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 07:31:19,498 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:31:19,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:31:19,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1696758764, now seen corresponding path program 1 times [2024-12-02 07:31:19,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:31:19,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889273256] [2024-12-02 07:31:19,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:31:19,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:31:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:31:20,159 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 42 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:31:20,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:31:20,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889273256] [2024-12-02 07:31:20,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889273256] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:31:20,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621481798] [2024-12-02 07:31:20,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:31:20,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:31:20,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:31:20,161 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:31:20,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 07:31:20,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:31:20,300 INFO L256 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 07:31:20,303 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:31:21,264 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 23 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:31:21,265 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:31:23,437 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 16 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:31:23,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621481798] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:31:23,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:31:23,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 31 [2024-12-02 07:31:23,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77576419] [2024-12-02 07:31:23,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:31:23,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-12-02 07:31:23,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:31:23,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-12-02 07:31:23,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=886, Unknown=0, NotChecked=0, Total=992 [2024-12-02 07:31:23,439 INFO L87 Difference]: Start difference. First operand 31928 states and 38476 transitions. Second operand has 32 states, 32 states have (on average 12.875) internal successors, (412), 31 states have internal predecessors, (412), 0 states have call successors, (0), 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 07:31:29,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:31:29,589 INFO L93 Difference]: Finished difference Result 61587 states and 74551 transitions. [2024-12-02 07:31:29,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-12-02 07:31:29,589 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 12.875) internal successors, (412), 31 states have internal predecessors, (412), 0 states have call successors, (0), 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 143 [2024-12-02 07:31:29,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:31:29,615 INFO L225 Difference]: With dead ends: 61587 [2024-12-02 07:31:29,615 INFO L226 Difference]: Without dead ends: 36604 [2024-12-02 07:31:29,627 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1381 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1313, Invalid=5493, Unknown=0, NotChecked=0, Total=6806 [2024-12-02 07:31:29,628 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 1489 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 1478 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 1518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 07:31:29,628 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1489 Valid, 1369 Invalid, 1518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1478 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 07:31:29,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36604 states. [2024-12-02 07:31:31,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36604 to 31928. [2024-12-02 07:31:31,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31928 states, 31927 states have (on average 1.19109217903342) internal successors, (38028), 31927 states have internal predecessors, (38028), 0 states have call successors, (0), 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 07:31:31,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31928 states to 31928 states and 38028 transitions. [2024-12-02 07:31:31,427 INFO L78 Accepts]: Start accepts. Automaton has 31928 states and 38028 transitions. Word has length 143 [2024-12-02 07:31:31,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:31:31,427 INFO L471 AbstractCegarLoop]: Abstraction has 31928 states and 38028 transitions. [2024-12-02 07:31:31,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 12.875) internal successors, (412), 31 states have internal predecessors, (412), 0 states have call successors, (0), 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 07:31:31,427 INFO L276 IsEmpty]: Start isEmpty. Operand 31928 states and 38028 transitions. [2024-12-02 07:31:31,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-12-02 07:31:31,430 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:31:31,430 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:31:31,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 07:31:31,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:31:31,631 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:31:31,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:31:31,631 INFO L85 PathProgramCache]: Analyzing trace with hash -706905084, now seen corresponding path program 1 times [2024-12-02 07:31:31,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:31:31,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816391907] [2024-12-02 07:31:31,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:31:31,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:31:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:31:32,516 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 52 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:31:32,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:31:32,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816391907] [2024-12-02 07:31:32,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816391907] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:31:32,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752495023] [2024-12-02 07:31:32,516 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:31:32,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:31:32,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:31:32,517 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:31:32,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 07:31:32,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:31:32,674 INFO L256 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 07:31:32,675 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:31:33,566 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 61 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:31:33,567 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:31:35,321 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 52 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:31:35,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752495023] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:31:35,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:31:35,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 31 [2024-12-02 07:31:35,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779402814] [2024-12-02 07:31:35,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:31:35,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-12-02 07:31:35,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:31:35,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-12-02 07:31:35,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=869, Unknown=0, NotChecked=0, Total=992 [2024-12-02 07:31:35,322 INFO L87 Difference]: Start difference. First operand 31928 states and 38028 transitions. Second operand has 32 states, 32 states have (on average 10.75) internal successors, (344), 31 states have internal predecessors, (344), 0 states have call successors, (0), 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 07:31:38,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:31:38,728 INFO L93 Difference]: Finished difference Result 50211 states and 59975 transitions. [2024-12-02 07:31:38,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 07:31:38,729 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 10.75) internal successors, (344), 31 states have internal predecessors, (344), 0 states have call successors, (0), 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 07:31:38,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:31:38,751 INFO L225 Difference]: With dead ends: 50211 [2024-12-02 07:31:38,751 INFO L226 Difference]: Without dead ends: 32266 [2024-12-02 07:31:38,761 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=787, Invalid=2873, Unknown=0, NotChecked=0, Total=3660 [2024-12-02 07:31:38,761 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 1206 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1206 SdHoareTripleChecker+Valid, 1558 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 07:31:38,761 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1206 Valid, 1558 Invalid, 1313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 07:31:38,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32266 states. [2024-12-02 07:31:40,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32266 to 31928. [2024-12-02 07:31:40,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31928 states, 31927 states have (on average 1.184076173771416) internal successors, (37804), 31927 states have internal predecessors, (37804), 0 states have call successors, (0), 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 07:31:40,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31928 states to 31928 states and 37804 transitions. [2024-12-02 07:31:40,606 INFO L78 Accepts]: Start accepts. Automaton has 31928 states and 37804 transitions. Word has length 145 [2024-12-02 07:31:40,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:31:40,607 INFO L471 AbstractCegarLoop]: Abstraction has 31928 states and 37804 transitions. [2024-12-02 07:31:40,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 10.75) internal successors, (344), 31 states have internal predecessors, (344), 0 states have call successors, (0), 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 07:31:40,607 INFO L276 IsEmpty]: Start isEmpty. Operand 31928 states and 37804 transitions. [2024-12-02 07:31:40,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-12-02 07:31:40,609 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:31:40,610 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 07:31:40,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 07:31:40,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-12-02 07:31:40,810 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:31:40,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:31:40,810 INFO L85 PathProgramCache]: Analyzing trace with hash -218782512, now seen corresponding path program 1 times [2024-12-02 07:31:40,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:31:40,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822635794] [2024-12-02 07:31:40,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:31:40,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:31:40,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:31:43,281 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 81 proven. 11 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-12-02 07:31:43,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:31:43,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822635794] [2024-12-02 07:31:43,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822635794] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:31:43,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852909959] [2024-12-02 07:31:43,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:31:43,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:31:43,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:31:43,283 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:31:43,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b47703a-e669-4442-b21a-8088724894e9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 07:31:43,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:31:43,433 INFO L256 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-12-02 07:31:43,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:31:50,863 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 25 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:31:50,863 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:32:05,787 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 16 proven. 107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:32:05,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852909959] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:32:05,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:32:05,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 38, 34] total 98 [2024-12-02 07:32:05,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642125236] [2024-12-02 07:32:05,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:32:05,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-12-02 07:32:05,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:32:05,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-12-02 07:32:05,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=865, Invalid=8641, Unknown=0, NotChecked=0, Total=9506 [2024-12-02 07:32:05,789 INFO L87 Difference]: Start difference. First operand 31928 states and 37804 transitions. Second operand has 98 states, 98 states have (on average 4.071428571428571) internal successors, (399), 98 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)