./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.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_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/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_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/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_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/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 379867ea0961f41e6474fa8c55575cf4bd65e7485349e160061a341c7749e45b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 14:37:25,128 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 14:37:25,187 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 14:37:25,192 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 14:37:25,192 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 14:37:25,215 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 14:37:25,216 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 14:37:25,216 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 14:37:25,216 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 14:37:25,216 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 14:37:25,216 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 14:37:25,216 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 14:37:25,217 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 14:37:25,217 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 14:37:25,217 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 14:37:25,217 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 14:37:25,217 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 14:37:25,217 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 14:37:25,217 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 14:37:25,217 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 14:37:25,217 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 14:37:25,217 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 14:37:25,218 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 14:37:25,218 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 14:37:25,218 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 14:37:25,218 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 14:37:25,218 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 14:37:25,218 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 14:37:25,218 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 14:37:25,218 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:37:25,218 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:37:25,218 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:37:25,218 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:37:25,219 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 14:37:25,219 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:37:25,219 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:37:25,219 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:37:25,219 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:37:25,219 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 14:37:25,219 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 14:37:25,219 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 14:37:25,219 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 14:37:25,219 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 14:37:25,220 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 14:37:25,220 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 14:37:25,220 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 14:37:25,220 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 14:37:25,220 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 14:37:25,220 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_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/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 -> 379867ea0961f41e6474fa8c55575cf4bd65e7485349e160061a341c7749e45b [2024-12-02 14:37:25,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 14:37:25,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 14:37:25,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 14:37:25,457 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 14:37:25,457 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 14:37:25,458 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2024-12-02 14:37:28,185 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/data/b4bb6b723/10520cd0f1fd4f46a6693ab7534d0f56/FLAGdf90e28fc [2024-12-02 14:37:28,382 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 14:37:28,383 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2024-12-02 14:37:28,393 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/data/b4bb6b723/10520cd0f1fd4f46a6693ab7534d0f56/FLAGdf90e28fc [2024-12-02 14:37:28,729 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/data/b4bb6b723/10520cd0f1fd4f46a6693ab7534d0f56 [2024-12-02 14:37:28,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 14:37:28,732 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 14:37:28,733 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 14:37:28,733 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 14:37:28,737 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 14:37:28,738 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:37:28" (1/1) ... [2024-12-02 14:37:28,739 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29cfd9ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:37:28, skipping insertion in model container [2024-12-02 14:37:28,739 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:37:28" (1/1) ... [2024-12-02 14:37:28,761 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 14:37:28,947 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_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7471,7484] [2024-12-02 14:37:28,982 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:37:28,995 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 14:37:29,038 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_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7471,7484] [2024-12-02 14:37:29,059 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:37:29,075 INFO L204 MainTranslator]: Completed translation [2024-12-02 14:37:29,075 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:37:29 WrapperNode [2024-12-02 14:37:29,076 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 14:37:29,076 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 14:37:29,076 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 14:37:29,077 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 14:37:29,082 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:37:29" (1/1) ... [2024-12-02 14:37:29,092 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:37:29" (1/1) ... [2024-12-02 14:37:29,121 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 668 [2024-12-02 14:37:29,121 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 14:37:29,122 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 14:37:29,122 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 14:37:29,122 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 14:37:29,129 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:37:29" (1/1) ... [2024-12-02 14:37:29,129 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:37:29" (1/1) ... [2024-12-02 14:37:29,132 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:37:29" (1/1) ... [2024-12-02 14:37:29,147 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 14:37:29,147 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:37:29" (1/1) ... [2024-12-02 14:37:29,148 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:37:29" (1/1) ... [2024-12-02 14:37:29,156 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:37:29" (1/1) ... [2024-12-02 14:37:29,158 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:37:29" (1/1) ... [2024-12-02 14:37:29,163 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:37:29" (1/1) ... [2024-12-02 14:37:29,165 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:37:29" (1/1) ... [2024-12-02 14:37:29,167 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:37:29" (1/1) ... [2024-12-02 14:37:29,170 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 14:37:29,171 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 14:37:29,171 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 14:37:29,171 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 14:37:29,172 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:37:29" (1/1) ... [2024-12-02 14:37:29,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:37:29,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:37:29,195 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 14:37:29,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 14:37:29,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 14:37:29,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 14:37:29,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 14:37:29,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 14:37:29,298 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 14:37:29,299 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 14:37:29,838 INFO L? ?]: Removed 89 outVars from TransFormulas that were not future-live. [2024-12-02 14:37:29,839 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 14:37:29,850 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 14:37:29,851 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-02 14:37:29,851 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:37:29 BoogieIcfgContainer [2024-12-02 14:37:29,851 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 14:37:29,853 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 14:37:29,853 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 14:37:29,857 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 14:37:29,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:37:28" (1/3) ... [2024-12-02 14:37:29,858 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79fbc09a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:37:29, skipping insertion in model container [2024-12-02 14:37:29,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:37:29" (2/3) ... [2024-12-02 14:37:29,858 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79fbc09a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:37:29, skipping insertion in model container [2024-12-02 14:37:29,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:37:29" (3/3) ... [2024-12-02 14:37:29,859 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2024-12-02 14:37:29,870 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 14:37:29,872 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c that has 1 procedures, 162 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-12-02 14:37:29,919 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 14:37:29,928 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;@cb5e041, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 14:37:29,929 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 14:37:29,932 INFO L276 IsEmpty]: Start isEmpty. Operand has 162 states, 160 states have (on average 1.70625) internal successors, (273), 161 states have internal predecessors, (273), 0 states have call successors, (0), 0 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 14:37:29,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-12-02 14:37:29,938 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:37:29,938 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] [2024-12-02 14:37:29,938 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:37:29,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:37:29,942 INFO L85 PathProgramCache]: Analyzing trace with hash 985312972, now seen corresponding path program 1 times [2024-12-02 14:37:29,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:37:29,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765005295] [2024-12-02 14:37:29,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:29,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:30,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:30,338 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 14:37:30,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:37:30,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765005295] [2024-12-02 14:37:30,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765005295] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:37:30,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:37:30,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:37:30,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185969526] [2024-12-02 14:37:30,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:37:30,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:37:30,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:37:30,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:37:30,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:37:30,365 INFO L87 Difference]: Start difference. First operand has 162 states, 160 states have (on average 1.70625) internal successors, (273), 161 states have internal predecessors, (273), 0 states have call successors, (0), 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 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 14:37:30,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:37:30,548 INFO L93 Difference]: Finished difference Result 517 states and 836 transitions. [2024-12-02 14:37:30,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:37:30,550 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2024-12-02 14:37:30,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:37:30,560 INFO L225 Difference]: With dead ends: 517 [2024-12-02 14:37:30,560 INFO L226 Difference]: Without dead ends: 438 [2024-12-02 14:37:30,562 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:37:30,564 INFO L435 NwaCegarLoop]: 378 mSDtfsCounter, 913 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:37:30,564 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 1288 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:37:30,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2024-12-02 14:37:30,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 256. [2024-12-02 14:37:30,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 1.4980392156862745) internal successors, (382), 255 states have internal predecessors, (382), 0 states have call successors, (0), 0 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 14:37:30,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 382 transitions. [2024-12-02 14:37:30,607 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 382 transitions. Word has length 50 [2024-12-02 14:37:30,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:37:30,608 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 382 transitions. [2024-12-02 14:37:30,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 14:37:30,608 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 382 transitions. [2024-12-02 14:37:30,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-12-02 14:37:30,609 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:37:30,609 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] [2024-12-02 14:37:30,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 14:37:30,610 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:37:30,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:37:30,611 INFO L85 PathProgramCache]: Analyzing trace with hash -722006169, now seen corresponding path program 1 times [2024-12-02 14:37:30,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:37:30,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828026269] [2024-12-02 14:37:30,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:30,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:30,723 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 14:37:30,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:37:30,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828026269] [2024-12-02 14:37:30,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828026269] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:37:30,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:37:30,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:37:30,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060332161] [2024-12-02 14:37:30,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:37:30,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:37:30,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:37:30,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:37:30,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:37:30,725 INFO L87 Difference]: Start difference. First operand 256 states and 382 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:37:30,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:37:30,762 INFO L93 Difference]: Finished difference Result 628 states and 954 transitions. [2024-12-02 14:37:30,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:37:30,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-12-02 14:37:30,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:37:30,765 INFO L225 Difference]: With dead ends: 628 [2024-12-02 14:37:30,765 INFO L226 Difference]: Without dead ends: 430 [2024-12-02 14:37:30,766 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 14:37:30,767 INFO L435 NwaCegarLoop]: 226 mSDtfsCounter, 158 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:37:30,767 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 420 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:37:30,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2024-12-02 14:37:30,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 428. [2024-12-02 14:37:30,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 1.484777517564403) internal successors, (634), 427 states have internal predecessors, (634), 0 states have call successors, (0), 0 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 14:37:30,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 634 transitions. [2024-12-02 14:37:30,784 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 634 transitions. Word has length 53 [2024-12-02 14:37:30,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:37:30,784 INFO L471 AbstractCegarLoop]: Abstraction has 428 states and 634 transitions. [2024-12-02 14:37:30,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:37:30,784 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 634 transitions. [2024-12-02 14:37:30,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-12-02 14:37:30,786 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:37:30,786 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] [2024-12-02 14:37:30,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 14:37:30,786 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:37:30,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:37:30,786 INFO L85 PathProgramCache]: Analyzing trace with hash -695460410, now seen corresponding path program 1 times [2024-12-02 14:37:30,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:37:30,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725658862] [2024-12-02 14:37:30,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:30,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:30,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:30,873 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 14:37:30,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:37:30,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725658862] [2024-12-02 14:37:30,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725658862] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:37:30,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:37:30,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:37:30,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69346390] [2024-12-02 14:37:30,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:37:30,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:37:30,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:37:30,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:37:30,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:37:30,875 INFO L87 Difference]: Start difference. First operand 428 states and 634 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:37:30,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:37:30,915 INFO L93 Difference]: Finished difference Result 1078 states and 1615 transitions. [2024-12-02 14:37:30,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:37:30,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-12-02 14:37:30,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:37:30,919 INFO L225 Difference]: With dead ends: 1078 [2024-12-02 14:37:30,919 INFO L226 Difference]: Without dead ends: 750 [2024-12-02 14:37:30,920 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 14:37:30,920 INFO L435 NwaCegarLoop]: 228 mSDtfsCounter, 157 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:37:30,921 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 434 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:37:30,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2024-12-02 14:37:30,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 748. [2024-12-02 14:37:30,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 747 states have (on average 1.4725568942436413) internal successors, (1100), 747 states have internal predecessors, (1100), 0 states have call successors, (0), 0 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 14:37:30,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1100 transitions. [2024-12-02 14:37:30,944 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1100 transitions. Word has length 53 [2024-12-02 14:37:30,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:37:30,944 INFO L471 AbstractCegarLoop]: Abstraction has 748 states and 1100 transitions. [2024-12-02 14:37:30,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:37:30,944 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1100 transitions. [2024-12-02 14:37:30,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-12-02 14:37:30,946 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:37:30,947 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] [2024-12-02 14:37:30,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 14:37:30,947 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:37:30,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:37:30,947 INFO L85 PathProgramCache]: Analyzing trace with hash -272648633, now seen corresponding path program 1 times [2024-12-02 14:37:30,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:37:30,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321320837] [2024-12-02 14:37:30,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:30,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:31,026 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 14:37:31,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:37:31,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321320837] [2024-12-02 14:37:31,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321320837] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:37:31,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:37:31,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:37:31,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927624874] [2024-12-02 14:37:31,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:37:31,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:37:31,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:37:31,028 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:37:31,028 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:37:31,028 INFO L87 Difference]: Start difference. First operand 748 states and 1100 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:37:31,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:37:31,070 INFO L93 Difference]: Finished difference Result 1859 states and 2747 transitions. [2024-12-02 14:37:31,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:37:31,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-12-02 14:37:31,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:37:31,075 INFO L225 Difference]: With dead ends: 1859 [2024-12-02 14:37:31,076 INFO L226 Difference]: Without dead ends: 1295 [2024-12-02 14:37:31,077 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 14:37:31,077 INFO L435 NwaCegarLoop]: 228 mSDtfsCounter, 144 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:37:31,078 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 434 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:37:31,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2024-12-02 14:37:31,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 1293. [2024-12-02 14:37:31,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1292 states have (on average 1.4504643962848298) internal successors, (1874), 1292 states have internal predecessors, (1874), 0 states have call successors, (0), 0 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 14:37:31,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 1874 transitions. [2024-12-02 14:37:31,127 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 1874 transitions. Word has length 53 [2024-12-02 14:37:31,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:37:31,127 INFO L471 AbstractCegarLoop]: Abstraction has 1293 states and 1874 transitions. [2024-12-02 14:37:31,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:37:31,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 1874 transitions. [2024-12-02 14:37:31,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-12-02 14:37:31,129 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:37:31,129 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 14:37:31,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 14:37:31,129 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:37:31,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:37:31,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1724922721, now seen corresponding path program 1 times [2024-12-02 14:37:31,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:37:31,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692025191] [2024-12-02 14:37:31,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:31,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:31,285 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 14:37:31,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:37:31,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692025191] [2024-12-02 14:37:31,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692025191] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:37:31,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:37:31,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:37:31,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736583301] [2024-12-02 14:37:31,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:37:31,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:37:31,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:37:31,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:37:31,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:37:31,287 INFO L87 Difference]: Start difference. First operand 1293 states and 1874 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 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 14:37:31,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:37:31,398 INFO L93 Difference]: Finished difference Result 2516 states and 3713 transitions. [2024-12-02 14:37:31,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:37:31,398 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 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 14:37:31,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:37:31,406 INFO L225 Difference]: With dead ends: 2516 [2024-12-02 14:37:31,406 INFO L226 Difference]: Without dead ends: 2150 [2024-12-02 14:37:31,407 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:37:31,408 INFO L435 NwaCegarLoop]: 443 mSDtfsCounter, 633 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:37:31,409 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 1128 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:37:31,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2150 states. [2024-12-02 14:37:31,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2150 to 1745. [2024-12-02 14:37:31,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1745 states, 1744 states have (on average 1.4581422018348624) internal successors, (2543), 1744 states have internal predecessors, (2543), 0 states have call successors, (0), 0 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 14:37:31,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1745 states to 1745 states and 2543 transitions. [2024-12-02 14:37:31,478 INFO L78 Accepts]: Start accepts. Automaton has 1745 states and 2543 transitions. Word has length 54 [2024-12-02 14:37:31,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:37:31,478 INFO L471 AbstractCegarLoop]: Abstraction has 1745 states and 2543 transitions. [2024-12-02 14:37:31,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 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 14:37:31,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1745 states and 2543 transitions. [2024-12-02 14:37:31,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-12-02 14:37:31,480 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:37:31,480 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 14:37:31,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 14:37:31,480 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:37:31,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:37:31,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1943574737, now seen corresponding path program 1 times [2024-12-02 14:37:31,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:37:31,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918062230] [2024-12-02 14:37:31,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:31,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:31,643 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 14:37:31,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:37:31,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918062230] [2024-12-02 14:37:31,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918062230] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:37:31,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:37:31,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:37:31,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976971966] [2024-12-02 14:37:31,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:37:31,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:37:31,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:37:31,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:37:31,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:37:31,645 INFO L87 Difference]: Start difference. First operand 1745 states and 2543 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 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 14:37:31,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:37:31,753 INFO L93 Difference]: Finished difference Result 2968 states and 4382 transitions. [2024-12-02 14:37:31,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:37:31,754 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 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 14:37:31,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:37:31,762 INFO L225 Difference]: With dead ends: 2968 [2024-12-02 14:37:31,762 INFO L226 Difference]: Without dead ends: 2602 [2024-12-02 14:37:31,763 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:37:31,764 INFO L435 NwaCegarLoop]: 398 mSDtfsCounter, 625 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:37:31,765 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 987 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:37:31,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2024-12-02 14:37:31,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 2091. [2024-12-02 14:37:31,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2091 states, 2090 states have (on average 1.4631578947368422) internal successors, (3058), 2090 states have internal predecessors, (3058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:37:31,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2091 states to 2091 states and 3058 transitions. [2024-12-02 14:37:31,815 INFO L78 Accepts]: Start accepts. Automaton has 2091 states and 3058 transitions. Word has length 54 [2024-12-02 14:37:31,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:37:31,816 INFO L471 AbstractCegarLoop]: Abstraction has 2091 states and 3058 transitions. [2024-12-02 14:37:31,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 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 14:37:31,816 INFO L276 IsEmpty]: Start isEmpty. Operand 2091 states and 3058 transitions. [2024-12-02 14:37:31,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-12-02 14:37:31,818 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:37:31,818 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 14:37:31,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 14:37:31,818 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:37:31,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:37:31,819 INFO L85 PathProgramCache]: Analyzing trace with hash -867408349, now seen corresponding path program 1 times [2024-12-02 14:37:31,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:37:31,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677465687] [2024-12-02 14:37:31,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:31,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:31,952 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 14:37:31,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:37:31,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677465687] [2024-12-02 14:37:31,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677465687] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:37:31,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:37:31,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:37:31,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085437310] [2024-12-02 14:37:31,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:37:31,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:37:31,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:37:31,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:37:31,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:37:31,954 INFO L87 Difference]: Start difference. First operand 2091 states and 3058 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 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 14:37:32,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:37:32,087 INFO L93 Difference]: Finished difference Result 3367 states and 4972 transitions. [2024-12-02 14:37:32,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:37:32,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 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 14:37:32,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:37:32,094 INFO L225 Difference]: With dead ends: 3367 [2024-12-02 14:37:32,095 INFO L226 Difference]: Without dead ends: 3001 [2024-12-02 14:37:32,096 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:37:32,097 INFO L435 NwaCegarLoop]: 424 mSDtfsCounter, 627 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:37:32,097 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 1128 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:37:32,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3001 states. [2024-12-02 14:37:32,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3001 to 2382. [2024-12-02 14:37:32,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2382 states, 2381 states have (on average 1.4666106677866442) internal successors, (3492), 2381 states have internal predecessors, (3492), 0 states have call successors, (0), 0 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 14:37:32,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 3492 transitions. [2024-12-02 14:37:32,155 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 3492 transitions. Word has length 54 [2024-12-02 14:37:32,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:37:32,155 INFO L471 AbstractCegarLoop]: Abstraction has 2382 states and 3492 transitions. [2024-12-02 14:37:32,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 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 14:37:32,156 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 3492 transitions. [2024-12-02 14:37:32,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-12-02 14:37:32,158 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:37:32,158 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 14:37:32,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 14:37:32,159 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:37:32,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:37:32,159 INFO L85 PathProgramCache]: Analyzing trace with hash -554993830, now seen corresponding path program 1 times [2024-12-02 14:37:32,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:37:32,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527430614] [2024-12-02 14:37:32,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:32,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:32,299 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 14:37:32,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:37:32,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527430614] [2024-12-02 14:37:32,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527430614] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:37:32,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:37:32,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:37:32,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050241285] [2024-12-02 14:37:32,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:37:32,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:37:32,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:37:32,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:37:32,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:37:32,301 INFO L87 Difference]: Start difference. First operand 2382 states and 3492 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 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 14:37:32,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:37:32,613 INFO L93 Difference]: Finished difference Result 6768 states and 9953 transitions. [2024-12-02 14:37:32,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:37:32,613 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 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 14:37:32,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:37:32,620 INFO L225 Difference]: With dead ends: 6768 [2024-12-02 14:37:32,620 INFO L226 Difference]: Without dead ends: 4414 [2024-12-02 14:37:32,622 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:37:32,623 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 939 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:37:32,623 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 216 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 14:37:32,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4414 states. [2024-12-02 14:37:32,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4414 to 4387. [2024-12-02 14:37:32,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4387 states, 4386 states have (on average 1.459188326493388) internal successors, (6400), 4386 states have internal predecessors, (6400), 0 states have call successors, (0), 0 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 14:37:32,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4387 states to 4387 states and 6400 transitions. [2024-12-02 14:37:32,686 INFO L78 Accepts]: Start accepts. Automaton has 4387 states and 6400 transitions. Word has length 58 [2024-12-02 14:37:32,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:37:32,686 INFO L471 AbstractCegarLoop]: Abstraction has 4387 states and 6400 transitions. [2024-12-02 14:37:32,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 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 14:37:32,687 INFO L276 IsEmpty]: Start isEmpty. Operand 4387 states and 6400 transitions. [2024-12-02 14:37:32,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-12-02 14:37:32,689 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:37:32,689 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 14:37:32,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 14:37:32,689 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:37:32,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:37:32,689 INFO L85 PathProgramCache]: Analyzing trace with hash 500702524, now seen corresponding path program 1 times [2024-12-02 14:37:32,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:37:32,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641042051] [2024-12-02 14:37:32,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:32,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:32,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:32,776 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 14:37:32,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:37:32,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641042051] [2024-12-02 14:37:32,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641042051] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:37:32,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:37:32,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:37:32,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89208445] [2024-12-02 14:37:32,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:37:32,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:37:32,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:37:32,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:37:32,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:37:32,777 INFO L87 Difference]: Start difference. First operand 4387 states and 6400 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 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 14:37:33,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:37:33,018 INFO L93 Difference]: Finished difference Result 10511 states and 15319 transitions. [2024-12-02 14:37:33,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:37:33,019 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 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 14:37:33,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:37:33,032 INFO L225 Difference]: With dead ends: 10511 [2024-12-02 14:37:33,032 INFO L226 Difference]: Without dead ends: 6170 [2024-12-02 14:37:33,036 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:37:33,037 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 890 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:37:33,037 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 226 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 14:37:33,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6170 states. [2024-12-02 14:37:33,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6170 to 6136. [2024-12-02 14:37:33,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6136 states, 6135 states have (on average 1.4454767726161368) internal successors, (8868), 6135 states have internal predecessors, (8868), 0 states have call successors, (0), 0 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 14:37:33,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6136 states to 6136 states and 8868 transitions. [2024-12-02 14:37:33,134 INFO L78 Accepts]: Start accepts. Automaton has 6136 states and 8868 transitions. Word has length 58 [2024-12-02 14:37:33,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:37:33,134 INFO L471 AbstractCegarLoop]: Abstraction has 6136 states and 8868 transitions. [2024-12-02 14:37:33,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 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 14:37:33,135 INFO L276 IsEmpty]: Start isEmpty. Operand 6136 states and 8868 transitions. [2024-12-02 14:37:33,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-12-02 14:37:33,136 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:37:33,136 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:37:33,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 14:37:33,137 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:37:33,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:37:33,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1531409244, now seen corresponding path program 1 times [2024-12-02 14:37:33,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:37:33,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372545479] [2024-12-02 14:37:33,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:33,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:33,258 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 14:37:33,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:37:33,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372545479] [2024-12-02 14:37:33,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372545479] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:37:33,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:37:33,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:37:33,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620920438] [2024-12-02 14:37:33,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:37:33,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:37:33,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:37:33,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:37:33,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:37:33,259 INFO L87 Difference]: Start difference. First operand 6136 states and 8868 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:37:33,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:37:33,487 INFO L93 Difference]: Finished difference Result 14628 states and 21107 transitions. [2024-12-02 14:37:33,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:37:33,487 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-12-02 14:37:33,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:37:33,508 INFO L225 Difference]: With dead ends: 14628 [2024-12-02 14:37:33,509 INFO L226 Difference]: Without dead ends: 8574 [2024-12-02 14:37:33,514 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:37:33,515 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 845 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:37:33,515 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 228 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 14:37:33,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8574 states. [2024-12-02 14:37:33,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8574 to 8526. [2024-12-02 14:37:33,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8526 states, 8525 states have (on average 1.4294428152492669) internal successors, (12186), 8525 states have internal predecessors, (12186), 0 states have call successors, (0), 0 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 14:37:33,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8526 states to 8526 states and 12186 transitions. [2024-12-02 14:37:33,622 INFO L78 Accepts]: Start accepts. Automaton has 8526 states and 12186 transitions. Word has length 59 [2024-12-02 14:37:33,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:37:33,622 INFO L471 AbstractCegarLoop]: Abstraction has 8526 states and 12186 transitions. [2024-12-02 14:37:33,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:37:33,622 INFO L276 IsEmpty]: Start isEmpty. Operand 8526 states and 12186 transitions. [2024-12-02 14:37:33,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-12-02 14:37:33,624 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:37:33,624 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:37:33,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 14:37:33,624 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:37:33,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:37:33,625 INFO L85 PathProgramCache]: Analyzing trace with hash -97252013, now seen corresponding path program 1 times [2024-12-02 14:37:33,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:37:33,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682137293] [2024-12-02 14:37:33,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:33,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:33,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:33,754 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 14:37:33,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:37:33,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682137293] [2024-12-02 14:37:33,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682137293] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:37:33,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:37:33,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:37:33,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108279475] [2024-12-02 14:37:33,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:37:33,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:37:33,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:37:33,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:37:33,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:37:33,756 INFO L87 Difference]: Start difference. First operand 8526 states and 12186 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 14:37:34,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:37:34,145 INFO L93 Difference]: Finished difference Result 19336 states and 27418 transitions. [2024-12-02 14:37:34,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:37:34,146 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-12-02 14:37:34,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:37:34,182 INFO L225 Difference]: With dead ends: 19336 [2024-12-02 14:37:34,183 INFO L226 Difference]: Without dead ends: 14958 [2024-12-02 14:37:34,189 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-12-02 14:37:34,189 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 1110 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1110 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:37:34,190 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1110 Valid, 325 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 14:37:34,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14958 states. [2024-12-02 14:37:34,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14958 to 8546. [2024-12-02 14:37:34,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8546 states, 8545 states have (on average 1.4289057928613225) internal successors, (12210), 8545 states have internal predecessors, (12210), 0 states have call successors, (0), 0 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 14:37:34,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8546 states to 8546 states and 12210 transitions. [2024-12-02 14:37:34,373 INFO L78 Accepts]: Start accepts. Automaton has 8546 states and 12210 transitions. Word has length 60 [2024-12-02 14:37:34,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:37:34,373 INFO L471 AbstractCegarLoop]: Abstraction has 8546 states and 12210 transitions. [2024-12-02 14:37:34,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 14:37:34,373 INFO L276 IsEmpty]: Start isEmpty. Operand 8546 states and 12210 transitions. [2024-12-02 14:37:34,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-12-02 14:37:34,376 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:37:34,376 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:37:34,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 14:37:34,377 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:37:34,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:37:34,377 INFO L85 PathProgramCache]: Analyzing trace with hash -172891724, now seen corresponding path program 1 times [2024-12-02 14:37:34,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:37:34,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169603353] [2024-12-02 14:37:34,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:34,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:34,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:34,567 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 14:37:34,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:37:34,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169603353] [2024-12-02 14:37:34,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169603353] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:37:34,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:37:34,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:37:34,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500288745] [2024-12-02 14:37:34,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:37:34,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:37:34,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:37:34,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:37:34,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:37:34,568 INFO L87 Difference]: Start difference. First operand 8546 states and 12210 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 14:37:34,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:37:34,966 INFO L93 Difference]: Finished difference Result 22529 states and 32025 transitions. [2024-12-02 14:37:34,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:37:34,966 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-12-02 14:37:34,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:37:35,010 INFO L225 Difference]: With dead ends: 22529 [2024-12-02 14:37:35,010 INFO L226 Difference]: Without dead ends: 18275 [2024-12-02 14:37:35,018 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-12-02 14:37:35,019 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 1291 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1291 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:37:35,019 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1291 Valid, 373 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 14:37:35,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18275 states. [2024-12-02 14:37:35,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18275 to 8656. [2024-12-02 14:37:35,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8656 states, 8655 states have (on average 1.427151935297516) internal successors, (12352), 8655 states have internal predecessors, (12352), 0 states have call successors, (0), 0 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 14:37:35,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8656 states to 8656 states and 12352 transitions. [2024-12-02 14:37:35,199 INFO L78 Accepts]: Start accepts. Automaton has 8656 states and 12352 transitions. Word has length 60 [2024-12-02 14:37:35,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:37:35,199 INFO L471 AbstractCegarLoop]: Abstraction has 8656 states and 12352 transitions. [2024-12-02 14:37:35,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 14:37:35,199 INFO L276 IsEmpty]: Start isEmpty. Operand 8656 states and 12352 transitions. [2024-12-02 14:37:35,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-12-02 14:37:35,202 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:37:35,202 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:37:35,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 14:37:35,203 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:37:35,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:37:35,203 INFO L85 PathProgramCache]: Analyzing trace with hash -2054897963, now seen corresponding path program 1 times [2024-12-02 14:37:35,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:37:35,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655233983] [2024-12-02 14:37:35,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:35,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:35,356 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 14:37:35,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:37:35,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655233983] [2024-12-02 14:37:35,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655233983] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:37:35,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:37:35,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:37:35,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458694202] [2024-12-02 14:37:35,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:37:35,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:37:35,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:37:35,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:37:35,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:37:35,357 INFO L87 Difference]: Start difference. First operand 8656 states and 12352 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 14:37:35,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:37:35,754 INFO L93 Difference]: Finished difference Result 25362 states and 35920 transitions. [2024-12-02 14:37:35,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:37:35,755 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-12-02 14:37:35,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:37:35,786 INFO L225 Difference]: With dead ends: 25362 [2024-12-02 14:37:35,786 INFO L226 Difference]: Without dead ends: 22264 [2024-12-02 14:37:35,793 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-12-02 14:37:35,794 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 1456 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1456 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:37:35,794 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1456 Valid, 386 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 14:37:35,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22264 states. [2024-12-02 14:37:35,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22264 to 8712. [2024-12-02 14:37:35,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8712 states, 8711 states have (on average 1.4258982895189989) internal successors, (12421), 8711 states have internal predecessors, (12421), 0 states have call successors, (0), 0 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 14:37:35,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8712 states to 8712 states and 12421 transitions. [2024-12-02 14:37:35,982 INFO L78 Accepts]: Start accepts. Automaton has 8712 states and 12421 transitions. Word has length 60 [2024-12-02 14:37:35,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:37:35,982 INFO L471 AbstractCegarLoop]: Abstraction has 8712 states and 12421 transitions. [2024-12-02 14:37:35,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 14:37:35,982 INFO L276 IsEmpty]: Start isEmpty. Operand 8712 states and 12421 transitions. [2024-12-02 14:37:35,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-02 14:37:35,986 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:37:35,986 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:37:35,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 14:37:35,986 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:37:35,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:37:35,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1036507303, now seen corresponding path program 1 times [2024-12-02 14:37:35,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:37:35,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195671222] [2024-12-02 14:37:35,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:35,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:36,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:36,399 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 14:37:36,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:37:36,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195671222] [2024-12-02 14:37:36,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195671222] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:37:36,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:37:36,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 14:37:36,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493083506] [2024-12-02 14:37:36,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:37:36,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 14:37:36,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:37:36,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 14:37:36,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:37:36,400 INFO L87 Difference]: Start difference. First operand 8712 states and 12421 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 14:37:37,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:37:37,094 INFO L93 Difference]: Finished difference Result 20942 states and 29948 transitions. [2024-12-02 14:37:37,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 14:37:37,094 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-12-02 14:37:37,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:37:37,112 INFO L225 Difference]: With dead ends: 20942 [2024-12-02 14:37:37,112 INFO L226 Difference]: Without dead ends: 13771 [2024-12-02 14:37:37,119 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2024-12-02 14:37:37,119 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 1027 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:37:37,119 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1027 Valid, 906 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 14:37:37,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13771 states. [2024-12-02 14:37:37,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13771 to 8546. [2024-12-02 14:37:37,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8546 states, 8545 states have (on average 1.423990637799883) internal successors, (12168), 8545 states have internal predecessors, (12168), 0 states have call successors, (0), 0 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 14:37:37,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8546 states to 8546 states and 12168 transitions. [2024-12-02 14:37:37,292 INFO L78 Accepts]: Start accepts. Automaton has 8546 states and 12168 transitions. Word has length 62 [2024-12-02 14:37:37,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:37:37,292 INFO L471 AbstractCegarLoop]: Abstraction has 8546 states and 12168 transitions. [2024-12-02 14:37:37,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 14:37:37,292 INFO L276 IsEmpty]: Start isEmpty. Operand 8546 states and 12168 transitions. [2024-12-02 14:37:37,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-02 14:37:37,295 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:37:37,295 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:37:37,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 14:37:37,295 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:37:37,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:37:37,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1459319080, now seen corresponding path program 1 times [2024-12-02 14:37:37,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:37:37,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715987596] [2024-12-02 14:37:37,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:37,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:37,646 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 14:37:37,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:37:37,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715987596] [2024-12-02 14:37:37,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715987596] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:37:37,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:37:37,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 14:37:37,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419904417] [2024-12-02 14:37:37,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:37:37,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 14:37:37,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:37:37,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 14:37:37,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:37:37,648 INFO L87 Difference]: Start difference. First operand 8546 states and 12168 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 14:37:38,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:37:38,329 INFO L93 Difference]: Finished difference Result 19626 states and 27922 transitions. [2024-12-02 14:37:38,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 14:37:38,329 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-12-02 14:37:38,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:37:38,357 INFO L225 Difference]: With dead ends: 19626 [2024-12-02 14:37:38,357 INFO L226 Difference]: Without dead ends: 12316 [2024-12-02 14:37:38,360 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2024-12-02 14:37:38,360 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 1030 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:37:38,361 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1030 Valid, 876 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 14:37:38,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12316 states. [2024-12-02 14:37:38,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12316 to 8253. [2024-12-02 14:37:38,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8253 states, 8252 states have (on average 1.422927775084828) internal successors, (11742), 8252 states have internal predecessors, (11742), 0 states have call successors, (0), 0 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 14:37:38,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8253 states to 8253 states and 11742 transitions. [2024-12-02 14:37:38,489 INFO L78 Accepts]: Start accepts. Automaton has 8253 states and 11742 transitions. Word has length 62 [2024-12-02 14:37:38,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:37:38,489 INFO L471 AbstractCegarLoop]: Abstraction has 8253 states and 11742 transitions. [2024-12-02 14:37:38,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 14:37:38,490 INFO L276 IsEmpty]: Start isEmpty. Operand 8253 states and 11742 transitions. [2024-12-02 14:37:38,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-02 14:37:38,491 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:37:38,491 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:37:38,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 14:37:38,491 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:37:38,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:37:38,492 INFO L85 PathProgramCache]: Analyzing trace with hash 2010042985, now seen corresponding path program 1 times [2024-12-02 14:37:38,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:37:38,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349135402] [2024-12-02 14:37:38,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:38,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:38,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:38,687 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 14:37:38,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:37:38,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349135402] [2024-12-02 14:37:38,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349135402] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:37:38,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:37:38,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 14:37:38,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529386353] [2024-12-02 14:37:38,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:37:38,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 14:37:38,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:37:38,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 14:37:38,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:37:38,688 INFO L87 Difference]: Start difference. First operand 8253 states and 11742 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 14:37:39,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:37:39,184 INFO L93 Difference]: Finished difference Result 20382 states and 29106 transitions. [2024-12-02 14:37:39,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 14:37:39,184 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-12-02 14:37:39,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:37:39,193 INFO L225 Difference]: With dead ends: 20382 [2024-12-02 14:37:39,193 INFO L226 Difference]: Without dead ends: 13279 [2024-12-02 14:37:39,198 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2024-12-02 14:37:39,199 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 858 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:37:39,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 780 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 14:37:39,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13279 states. [2024-12-02 14:37:39,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13279 to 8112. [2024-12-02 14:37:39,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8112 states, 8111 states have (on average 1.423622241400567) internal successors, (11547), 8111 states have internal predecessors, (11547), 0 states have call successors, (0), 0 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 14:37:39,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8112 states to 8112 states and 11547 transitions. [2024-12-02 14:37:39,307 INFO L78 Accepts]: Start accepts. Automaton has 8112 states and 11547 transitions. Word has length 62 [2024-12-02 14:37:39,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:37:39,307 INFO L471 AbstractCegarLoop]: Abstraction has 8112 states and 11547 transitions. [2024-12-02 14:37:39,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 14:37:39,308 INFO L276 IsEmpty]: Start isEmpty. Operand 8112 states and 11547 transitions. [2024-12-02 14:37:39,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 14:37:39,309 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:37:39,309 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:37:39,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 14:37:39,309 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:37:39,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:37:39,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1983119998, now seen corresponding path program 1 times [2024-12-02 14:37:39,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:37:39,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196167575] [2024-12-02 14:37:39,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:39,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:39,348 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 14:37:39,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:37:39,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196167575] [2024-12-02 14:37:39,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196167575] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:37:39,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:37:39,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:37:39,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616037951] [2024-12-02 14:37:39,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:37:39,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:37:39,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:37:39,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:37:39,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:37:39,350 INFO L87 Difference]: Start difference. First operand 8112 states and 11547 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 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 14:37:39,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:37:39,385 INFO L93 Difference]: Finished difference Result 11169 states and 15856 transitions. [2024-12-02 14:37:39,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:37:39,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-12-02 14:37:39,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:37:39,391 INFO L225 Difference]: With dead ends: 11169 [2024-12-02 14:37:39,391 INFO L226 Difference]: Without dead ends: 7915 [2024-12-02 14:37:39,394 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 14:37:39,394 INFO L435 NwaCegarLoop]: 342 mSDtfsCounter, 150 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:37:39,394 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 523 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:37:39,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7915 states. [2024-12-02 14:37:39,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7915 to 7913. [2024-12-02 14:37:39,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7913 states, 7912 states have (on average 1.397118301314459) internal successors, (11054), 7912 states have internal predecessors, (11054), 0 states have call successors, (0), 0 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 14:37:39,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7913 states to 7913 states and 11054 transitions. [2024-12-02 14:37:39,458 INFO L78 Accepts]: Start accepts. Automaton has 7913 states and 11054 transitions. Word has length 63 [2024-12-02 14:37:39,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:37:39,458 INFO L471 AbstractCegarLoop]: Abstraction has 7913 states and 11054 transitions. [2024-12-02 14:37:39,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 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 14:37:39,458 INFO L276 IsEmpty]: Start isEmpty. Operand 7913 states and 11054 transitions. [2024-12-02 14:37:39,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 14:37:39,459 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:37:39,460 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:37:39,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 14:37:39,460 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:37:39,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:37:39,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1051173576, now seen corresponding path program 1 times [2024-12-02 14:37:39,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:37:39,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879230904] [2024-12-02 14:37:39,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:39,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:39,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:39,501 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 14:37:39,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:37:39,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879230904] [2024-12-02 14:37:39,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879230904] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:37:39,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:37:39,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:37:39,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947239890] [2024-12-02 14:37:39,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:37:39,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:37:39,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:37:39,503 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:37:39,503 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:37:39,503 INFO L87 Difference]: Start difference. First operand 7913 states and 11054 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 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 14:37:39,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:37:39,534 INFO L93 Difference]: Finished difference Result 11329 states and 15821 transitions. [2024-12-02 14:37:39,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:37:39,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-12-02 14:37:39,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:37:39,539 INFO L225 Difference]: With dead ends: 11329 [2024-12-02 14:37:39,539 INFO L226 Difference]: Without dead ends: 7041 [2024-12-02 14:37:39,542 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 14:37:39,542 INFO L435 NwaCegarLoop]: 322 mSDtfsCounter, 136 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:37:39,542 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 518 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:37:39,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7041 states. [2024-12-02 14:37:39,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7041 to 7039. [2024-12-02 14:37:39,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7039 states, 7038 states have (on average 1.3751065643648763) internal successors, (9678), 7038 states have internal predecessors, (9678), 0 states have call successors, (0), 0 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 14:37:39,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7039 states to 7039 states and 9678 transitions. [2024-12-02 14:37:39,618 INFO L78 Accepts]: Start accepts. Automaton has 7039 states and 9678 transitions. Word has length 63 [2024-12-02 14:37:39,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:37:39,619 INFO L471 AbstractCegarLoop]: Abstraction has 7039 states and 9678 transitions. [2024-12-02 14:37:39,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 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 14:37:39,619 INFO L276 IsEmpty]: Start isEmpty. Operand 7039 states and 9678 transitions. [2024-12-02 14:37:39,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 14:37:39,620 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:37:39,620 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:37:39,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 14:37:39,620 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:37:39,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:37:39,621 INFO L85 PathProgramCache]: Analyzing trace with hash -125701859, now seen corresponding path program 1 times [2024-12-02 14:37:39,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:37:39,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465894588] [2024-12-02 14:37:39,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:39,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:39,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:39,658 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 14:37:39,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:37:39,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465894588] [2024-12-02 14:37:39,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465894588] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:37:39,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:37:39,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:37:39,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340044114] [2024-12-02 14:37:39,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:37:39,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:37:39,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:37:39,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:37:39,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:37:39,660 INFO L87 Difference]: Start difference. First operand 7039 states and 9678 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 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 14:37:39,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:37:39,688 INFO L93 Difference]: Finished difference Result 9423 states and 12952 transitions. [2024-12-02 14:37:39,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:37:39,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-12-02 14:37:39,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:37:39,692 INFO L225 Difference]: With dead ends: 9423 [2024-12-02 14:37:39,692 INFO L226 Difference]: Without dead ends: 5436 [2024-12-02 14:37:39,694 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:37:39,694 INFO L435 NwaCegarLoop]: 333 mSDtfsCounter, 148 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:37:39,695 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 529 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:37:39,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5436 states. [2024-12-02 14:37:39,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5436 to 5434. [2024-12-02 14:37:39,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5434 states, 5433 states have (on average 1.3519234308853303) internal successors, (7345), 5433 states have internal predecessors, (7345), 0 states have call successors, (0), 0 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 14:37:39,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5434 states to 5434 states and 7345 transitions. [2024-12-02 14:37:39,733 INFO L78 Accepts]: Start accepts. Automaton has 5434 states and 7345 transitions. Word has length 63 [2024-12-02 14:37:39,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:37:39,734 INFO L471 AbstractCegarLoop]: Abstraction has 5434 states and 7345 transitions. [2024-12-02 14:37:39,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 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 14:37:39,734 INFO L276 IsEmpty]: Start isEmpty. Operand 5434 states and 7345 transitions. [2024-12-02 14:37:39,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 14:37:39,736 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:37:39,736 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:37:39,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 14:37:39,736 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:37:39,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:37:39,736 INFO L85 PathProgramCache]: Analyzing trace with hash 666404545, now seen corresponding path program 1 times [2024-12-02 14:37:39,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:37:39,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3845176] [2024-12-02 14:37:39,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:39,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:39,769 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 14:37:39,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:37:39,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3845176] [2024-12-02 14:37:39,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3845176] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:37:39,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:37:39,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:37:39,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334940792] [2024-12-02 14:37:39,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:37:39,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:37:39,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:37:39,770 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:37:39,770 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:37:39,770 INFO L87 Difference]: Start difference. First operand 5434 states and 7345 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 14:37:39,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:37:39,816 INFO L93 Difference]: Finished difference Result 10138 states and 13774 transitions. [2024-12-02 14:37:39,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:37:39,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2024-12-02 14:37:39,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:37:39,821 INFO L225 Difference]: With dead ends: 10138 [2024-12-02 14:37:39,821 INFO L226 Difference]: Without dead ends: 7401 [2024-12-02 14:37:39,824 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 14:37:39,824 INFO L435 NwaCegarLoop]: 215 mSDtfsCounter, 173 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:37:39,824 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 347 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:37:39,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7401 states. [2024-12-02 14:37:39,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7401 to 5217. [2024-12-02 14:37:39,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5217 states, 5216 states have (on average 1.3506518404907975) internal successors, (7045), 5216 states have internal predecessors, (7045), 0 states have call successors, (0), 0 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 14:37:39,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5217 states to 5217 states and 7045 transitions. [2024-12-02 14:37:39,870 INFO L78 Accepts]: Start accepts. Automaton has 5217 states and 7045 transitions. Word has length 64 [2024-12-02 14:37:39,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:37:39,870 INFO L471 AbstractCegarLoop]: Abstraction has 5217 states and 7045 transitions. [2024-12-02 14:37:39,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 14:37:39,870 INFO L276 IsEmpty]: Start isEmpty. Operand 5217 states and 7045 transitions. [2024-12-02 14:37:39,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 14:37:39,872 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:37:39,872 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:37:39,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 14:37:39,872 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:37:39,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:37:39,872 INFO L85 PathProgramCache]: Analyzing trace with hash 859970200, now seen corresponding path program 1 times [2024-12-02 14:37:39,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:37:39,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961857646] [2024-12-02 14:37:39,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:39,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:39,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:41,024 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 14:37:41,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:37:41,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961857646] [2024-12-02 14:37:41,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961857646] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:37:41,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:37:41,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2024-12-02 14:37:41,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772279873] [2024-12-02 14:37:41,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:37:41,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 14:37:41,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:37:41,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 14:37:41,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2024-12-02 14:37:41,026 INFO L87 Difference]: Start difference. First operand 5217 states and 7045 transitions. Second operand has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 14:37:43,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:37:43,734 INFO L93 Difference]: Finished difference Result 8676 states and 11760 transitions. [2024-12-02 14:37:43,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 14:37:43,735 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2024-12-02 14:37:43,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:37:43,740 INFO L225 Difference]: With dead ends: 8676 [2024-12-02 14:37:43,740 INFO L226 Difference]: Without dead ends: 8560 [2024-12-02 14:37:43,742 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=321, Invalid=1571, Unknown=0, NotChecked=0, Total=1892 [2024-12-02 14:37:43,742 INFO L435 NwaCegarLoop]: 244 mSDtfsCounter, 1483 mSDsluCounter, 3401 mSDsCounter, 0 mSdLazyCounter, 2658 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1483 SdHoareTripleChecker+Valid, 3645 SdHoareTripleChecker+Invalid, 2670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-02 14:37:43,742 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1483 Valid, 3645 Invalid, 2670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2658 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-02 14:37:43,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8560 states. [2024-12-02 14:37:43,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8560 to 5217. [2024-12-02 14:37:43,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5217 states, 5216 states have (on average 1.3504601226993864) internal successors, (7044), 5216 states have internal predecessors, (7044), 0 states have call successors, (0), 0 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 14:37:43,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5217 states to 5217 states and 7044 transitions. [2024-12-02 14:37:43,791 INFO L78 Accepts]: Start accepts. Automaton has 5217 states and 7044 transitions. Word has length 64 [2024-12-02 14:37:43,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:37:43,791 INFO L471 AbstractCegarLoop]: Abstraction has 5217 states and 7044 transitions. [2024-12-02 14:37:43,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 14:37:43,791 INFO L276 IsEmpty]: Start isEmpty. Operand 5217 states and 7044 transitions. [2024-12-02 14:37:43,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 14:37:43,792 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:37:43,792 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:37:43,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 14:37:43,793 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:37:43,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:37:43,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1948770272, now seen corresponding path program 1 times [2024-12-02 14:37:43,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:37:43,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614903216] [2024-12-02 14:37:43,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:43,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:44,388 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 14:37:44,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:37:44,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614903216] [2024-12-02 14:37:44,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614903216] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:37:44,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:37:44,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 14:37:44,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853047500] [2024-12-02 14:37:44,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:37:44,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 14:37:44,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:37:44,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 14:37:44,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-12-02 14:37:44,389 INFO L87 Difference]: Start difference. First operand 5217 states and 7044 transitions. Second operand has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 14:37:45,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:37:45,193 INFO L93 Difference]: Finished difference Result 9305 states and 12628 transitions. [2024-12-02 14:37:45,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 14:37:45,194 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2024-12-02 14:37:45,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:37:45,201 INFO L225 Difference]: With dead ends: 9305 [2024-12-02 14:37:45,201 INFO L226 Difference]: Without dead ends: 8633 [2024-12-02 14:37:45,204 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2024-12-02 14:37:45,205 INFO L435 NwaCegarLoop]: 228 mSDtfsCounter, 1764 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1764 SdHoareTripleChecker+Valid, 1537 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:37:45,205 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1764 Valid, 1537 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 14:37:45,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8633 states. [2024-12-02 14:37:45,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8633 to 5115. [2024-12-02 14:37:45,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5115 states, 5114 states have (on average 1.3506061791161517) internal successors, (6907), 5114 states have internal predecessors, (6907), 0 states have call successors, (0), 0 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 14:37:45,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5115 states to 5115 states and 6907 transitions. [2024-12-02 14:37:45,260 INFO L78 Accepts]: Start accepts. Automaton has 5115 states and 6907 transitions. Word has length 64 [2024-12-02 14:37:45,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:37:45,260 INFO L471 AbstractCegarLoop]: Abstraction has 5115 states and 6907 transitions. [2024-12-02 14:37:45,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 14:37:45,260 INFO L276 IsEmpty]: Start isEmpty. Operand 5115 states and 6907 transitions. [2024-12-02 14:37:45,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 14:37:45,261 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:37:45,261 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:37:45,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 14:37:45,261 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:37:45,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:37:45,262 INFO L85 PathProgramCache]: Analyzing trace with hash 2017308149, now seen corresponding path program 1 times [2024-12-02 14:37:45,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:37:45,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270242476] [2024-12-02 14:37:45,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:45,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:45,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:45,306 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 14:37:45,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:37:45,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270242476] [2024-12-02 14:37:45,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270242476] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:37:45,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:37:45,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:37:45,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501300360] [2024-12-02 14:37:45,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:37:45,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:37:45,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:37:45,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:37:45,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:37:45,308 INFO L87 Difference]: Start difference. First operand 5115 states and 6907 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 14:37:45,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:37:45,370 INFO L93 Difference]: Finished difference Result 7514 states and 10148 transitions. [2024-12-02 14:37:45,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:37:45,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2024-12-02 14:37:45,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:37:45,375 INFO L225 Difference]: With dead ends: 7514 [2024-12-02 14:37:45,375 INFO L226 Difference]: Without dead ends: 5611 [2024-12-02 14:37:45,378 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 14:37:45,378 INFO L435 NwaCegarLoop]: 226 mSDtfsCounter, 160 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:37:45,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 356 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:37:45,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5611 states. [2024-12-02 14:37:45,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5611 to 4896. [2024-12-02 14:37:45,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4896 states, 4895 states have (on average 1.350561797752809) internal successors, (6611), 4895 states have internal predecessors, (6611), 0 states have call successors, (0), 0 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 14:37:45,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4896 states to 4896 states and 6611 transitions. [2024-12-02 14:37:45,429 INFO L78 Accepts]: Start accepts. Automaton has 4896 states and 6611 transitions. Word has length 64 [2024-12-02 14:37:45,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:37:45,429 INFO L471 AbstractCegarLoop]: Abstraction has 4896 states and 6611 transitions. [2024-12-02 14:37:45,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 14:37:45,429 INFO L276 IsEmpty]: Start isEmpty. Operand 4896 states and 6611 transitions. [2024-12-02 14:37:45,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-12-02 14:37:45,430 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:37:45,431 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:37:45,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 14:37:45,431 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:37:45,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:37:45,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1849868598, now seen corresponding path program 1 times [2024-12-02 14:37:45,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:37:45,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300351986] [2024-12-02 14:37:45,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:45,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:45,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:45,972 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 14:37:45,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:37:45,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300351986] [2024-12-02 14:37:45,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300351986] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:37:45,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:37:45,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 14:37:45,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069979283] [2024-12-02 14:37:45,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:37:45,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 14:37:45,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:37:45,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 14:37:45,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-12-02 14:37:45,973 INFO L87 Difference]: Start difference. First operand 4896 states and 6611 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 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 14:37:46,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:37:46,739 INFO L93 Difference]: Finished difference Result 6465 states and 8749 transitions. [2024-12-02 14:37:46,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 14:37:46,740 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2024-12-02 14:37:46,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:37:46,744 INFO L225 Difference]: With dead ends: 6465 [2024-12-02 14:37:46,744 INFO L226 Difference]: Without dead ends: 5811 [2024-12-02 14:37:46,746 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=142, Invalid=458, Unknown=0, NotChecked=0, Total=600 [2024-12-02 14:37:46,746 INFO L435 NwaCegarLoop]: 211 mSDtfsCounter, 1202 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1202 SdHoareTripleChecker+Valid, 1711 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:37:46,746 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1202 Valid, 1711 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 14:37:46,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5811 states. [2024-12-02 14:37:46,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5811 to 4784. [2024-12-02 14:37:46,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4784 states, 4783 states have (on average 1.3512439891281622) internal successors, (6463), 4783 states have internal predecessors, (6463), 0 states have call successors, (0), 0 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 14:37:46,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4784 states to 4784 states and 6463 transitions. [2024-12-02 14:37:46,798 INFO L78 Accepts]: Start accepts. Automaton has 4784 states and 6463 transitions. Word has length 65 [2024-12-02 14:37:46,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:37:46,798 INFO L471 AbstractCegarLoop]: Abstraction has 4784 states and 6463 transitions. [2024-12-02 14:37:46,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 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 14:37:46,798 INFO L276 IsEmpty]: Start isEmpty. Operand 4784 states and 6463 transitions. [2024-12-02 14:37:46,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-02 14:37:46,800 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:37:46,800 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:37:46,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 14:37:46,801 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:37:46,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:37:46,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1563174538, now seen corresponding path program 1 times [2024-12-02 14:37:46,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:37:46,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757654972] [2024-12-02 14:37:46,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:46,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:46,898 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 14:37:46,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:37:46,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757654972] [2024-12-02 14:37:46,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757654972] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:37:46,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:37:46,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:37:46,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621276317] [2024-12-02 14:37:46,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:37:46,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:37:46,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:37:46,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:37:46,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:37:46,900 INFO L87 Difference]: Start difference. First operand 4784 states and 6463 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:37:46,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:37:46,957 INFO L93 Difference]: Finished difference Result 4790 states and 6466 transitions. [2024-12-02 14:37:46,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:37:46,958 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-12-02 14:37:46,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:37:46,962 INFO L225 Difference]: With dead ends: 4790 [2024-12-02 14:37:46,962 INFO L226 Difference]: Without dead ends: 4331 [2024-12-02 14:37:46,963 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:37:46,963 INFO L435 NwaCegarLoop]: 389 mSDtfsCounter, 483 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:37:46,964 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 658 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:37:46,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4331 states. [2024-12-02 14:37:46,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4331 to 4327. [2024-12-02 14:37:47,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4327 states, 4326 states have (on average 1.3548312528895052) internal successors, (5861), 4326 states have internal predecessors, (5861), 0 states have call successors, (0), 0 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 14:37:47,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4327 states to 4327 states and 5861 transitions. [2024-12-02 14:37:47,027 INFO L78 Accepts]: Start accepts. Automaton has 4327 states and 5861 transitions. Word has length 69 [2024-12-02 14:37:47,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:37:47,027 INFO L471 AbstractCegarLoop]: Abstraction has 4327 states and 5861 transitions. [2024-12-02 14:37:47,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:37:47,027 INFO L276 IsEmpty]: Start isEmpty. Operand 4327 states and 5861 transitions. [2024-12-02 14:37:47,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-12-02 14:37:47,029 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:37:47,029 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:37:47,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 14:37:47,029 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:37:47,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:37:47,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1535111263, now seen corresponding path program 1 times [2024-12-02 14:37:47,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:37:47,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138640978] [2024-12-02 14:37:47,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:47,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:47,116 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 14:37:47,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:37:47,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138640978] [2024-12-02 14:37:47,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138640978] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:37:47,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:37:47,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:37:47,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891107042] [2024-12-02 14:37:47,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:37:47,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:37:47,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:37:47,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:37:47,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:37:47,118 INFO L87 Difference]: Start difference. First operand 4327 states and 5861 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 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 14:37:47,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:37:47,157 INFO L93 Difference]: Finished difference Result 11143 states and 15223 transitions. [2024-12-02 14:37:47,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:37:47,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 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 72 [2024-12-02 14:37:47,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:37:47,164 INFO L225 Difference]: With dead ends: 11143 [2024-12-02 14:37:47,164 INFO L226 Difference]: Without dead ends: 7428 [2024-12-02 14:37:47,167 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 14:37:47,168 INFO L435 NwaCegarLoop]: 287 mSDtfsCounter, 116 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:37:47,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 437 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:37:47,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7428 states. [2024-12-02 14:37:47,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7428 to 6958. [2024-12-02 14:37:47,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6958 states, 6957 states have (on average 1.3497197067701596) internal successors, (9390), 6957 states have internal predecessors, (9390), 0 states have call successors, (0), 0 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 14:37:47,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6958 states to 6958 states and 9390 transitions. [2024-12-02 14:37:47,243 INFO L78 Accepts]: Start accepts. Automaton has 6958 states and 9390 transitions. Word has length 72 [2024-12-02 14:37:47,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:37:47,243 INFO L471 AbstractCegarLoop]: Abstraction has 6958 states and 9390 transitions. [2024-12-02 14:37:47,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 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 14:37:47,243 INFO L276 IsEmpty]: Start isEmpty. Operand 6958 states and 9390 transitions. [2024-12-02 14:37:47,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-12-02 14:37:47,244 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:37:47,244 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:37:47,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 14:37:47,245 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:37:47,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:37:47,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1480821562, now seen corresponding path program 1 times [2024-12-02 14:37:47,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:37:47,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745077355] [2024-12-02 14:37:47,245 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:47,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:47,328 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 14:37:47,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:37:47,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745077355] [2024-12-02 14:37:47,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745077355] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:37:47,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:37:47,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:37:47,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522515847] [2024-12-02 14:37:47,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:37:47,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:37:47,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:37:47,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:37:47,329 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:37:47,329 INFO L87 Difference]: Start difference. First operand 6958 states and 9390 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:37:47,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:37:47,382 INFO L93 Difference]: Finished difference Result 18986 states and 25770 transitions. [2024-12-02 14:37:47,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:37:47,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-12-02 14:37:47,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:37:47,390 INFO L225 Difference]: With dead ends: 18986 [2024-12-02 14:37:47,390 INFO L226 Difference]: Without dead ends: 12662 [2024-12-02 14:37:47,394 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 14:37:47,394 INFO L435 NwaCegarLoop]: 270 mSDtfsCounter, 106 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 428 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 14:37:47,394 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 428 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:37:47,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12662 states. [2024-12-02 14:37:47,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12662 to 11596. [2024-12-02 14:37:47,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11596 states, 11595 states have (on average 1.3446313065976714) internal successors, (15591), 11595 states have internal predecessors, (15591), 0 states have call successors, (0), 0 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 14:37:47,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11596 states to 11596 states and 15591 transitions. [2024-12-02 14:37:47,486 INFO L78 Accepts]: Start accepts. Automaton has 11596 states and 15591 transitions. Word has length 73 [2024-12-02 14:37:47,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:37:47,486 INFO L471 AbstractCegarLoop]: Abstraction has 11596 states and 15591 transitions. [2024-12-02 14:37:47,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:37:47,486 INFO L276 IsEmpty]: Start isEmpty. Operand 11596 states and 15591 transitions. [2024-12-02 14:37:47,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-12-02 14:37:47,487 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:37:47,487 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:37:47,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-02 14:37:47,487 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:37:47,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:37:47,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1423402598, now seen corresponding path program 1 times [2024-12-02 14:37:47,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:37:47,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231685611] [2024-12-02 14:37:47,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:47,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:47,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:47,569 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 14:37:47,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:37:47,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231685611] [2024-12-02 14:37:47,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231685611] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:37:47,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:37:47,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:37:47,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525352917] [2024-12-02 14:37:47,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:37:47,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:37:47,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:37:47,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:37:47,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:37:47,570 INFO L87 Difference]: Start difference. First operand 11596 states and 15591 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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 14:37:47,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:37:47,678 INFO L93 Difference]: Finished difference Result 32280 states and 43421 transitions. [2024-12-02 14:37:47,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:37:47,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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 74 [2024-12-02 14:37:47,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:37:47,697 INFO L225 Difference]: With dead ends: 32280 [2024-12-02 14:37:47,697 INFO L226 Difference]: Without dead ends: 21318 [2024-12-02 14:37:47,703 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 14:37:47,703 INFO L435 NwaCegarLoop]: 252 mSDtfsCounter, 95 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 420 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 14:37:47,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 420 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:37:47,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21318 states. [2024-12-02 14:37:47,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21318 to 19508. [2024-12-02 14:37:47,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19508 states, 19507 states have (on average 1.333316245450351) internal successors, (26009), 19507 states have internal predecessors, (26009), 0 states have call successors, (0), 0 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 14:37:47,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19508 states to 19508 states and 26009 transitions. [2024-12-02 14:37:47,854 INFO L78 Accepts]: Start accepts. Automaton has 19508 states and 26009 transitions. Word has length 74 [2024-12-02 14:37:47,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:37:47,854 INFO L471 AbstractCegarLoop]: Abstraction has 19508 states and 26009 transitions. [2024-12-02 14:37:47,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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 14:37:47,854 INFO L276 IsEmpty]: Start isEmpty. Operand 19508 states and 26009 transitions. [2024-12-02 14:37:47,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-12-02 14:37:47,855 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:37:47,855 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:37:47,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-12-02 14:37:47,855 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:37:47,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:37:47,856 INFO L85 PathProgramCache]: Analyzing trace with hash 2071973989, now seen corresponding path program 1 times [2024-12-02 14:37:47,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:37:47,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36792271] [2024-12-02 14:37:47,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:47,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:47,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:48,045 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 14:37:48,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:37:48,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36792271] [2024-12-02 14:37:48,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36792271] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:37:48,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:37:48,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:37:48,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729761471] [2024-12-02 14:37:48,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:37:48,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:37:48,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:37:48,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:37:48,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:37:48,046 INFO L87 Difference]: Start difference. First operand 19508 states and 26009 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:37:48,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:37:48,115 INFO L93 Difference]: Finished difference Result 21478 states and 28634 transitions. [2024-12-02 14:37:48,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 14:37:48,115 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-12-02 14:37:48,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:37:48,135 INFO L225 Difference]: With dead ends: 21478 [2024-12-02 14:37:48,135 INFO L226 Difference]: Without dead ends: 21476 [2024-12-02 14:37:48,141 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:37:48,141 INFO L435 NwaCegarLoop]: 198 mSDtfsCounter, 0 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:37:48,141 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 974 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:37:48,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21476 states. [2024-12-02 14:37:48,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21476 to 21476. [2024-12-02 14:37:48,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21476 states, 21475 states have (on average 1.3027706635622818) internal successors, (27977), 21475 states have internal predecessors, (27977), 0 states have call successors, (0), 0 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 14:37:48,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21476 states to 21476 states and 27977 transitions. [2024-12-02 14:37:48,311 INFO L78 Accepts]: Start accepts. Automaton has 21476 states and 27977 transitions. Word has length 77 [2024-12-02 14:37:48,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:37:48,312 INFO L471 AbstractCegarLoop]: Abstraction has 21476 states and 27977 transitions. [2024-12-02 14:37:48,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:37:48,312 INFO L276 IsEmpty]: Start isEmpty. Operand 21476 states and 27977 transitions. [2024-12-02 14:37:48,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-12-02 14:37:48,313 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:37:48,313 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:37:48,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-12-02 14:37:48,313 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:37:48,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:37:48,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1914492299, now seen corresponding path program 1 times [2024-12-02 14:37:48,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:37:48,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945572928] [2024-12-02 14:37:48,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:48,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:48,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:48,360 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 14:37:48,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:37:48,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945572928] [2024-12-02 14:37:48,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945572928] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:37:48,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:37:48,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:37:48,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772492037] [2024-12-02 14:37:48,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:37:48,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:37:48,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:37:48,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:37:48,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:37:48,361 INFO L87 Difference]: Start difference. First operand 21476 states and 27977 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 14:37:48,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:37:48,482 INFO L93 Difference]: Finished difference Result 52776 states and 68411 transitions. [2024-12-02 14:37:48,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:37:48,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 14:37:48,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:37:48,523 INFO L225 Difference]: With dead ends: 52776 [2024-12-02 14:37:48,523 INFO L226 Difference]: Without dead ends: 31934 [2024-12-02 14:37:48,537 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:37:48,537 INFO L435 NwaCegarLoop]: 222 mSDtfsCounter, 135 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:37:48,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 345 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:37:48,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31934 states. [2024-12-02 14:37:48,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31934 to 31932. [2024-12-02 14:37:48,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31932 states, 31931 states have (on average 1.2786633678870063) internal successors, (40829), 31931 states have internal predecessors, (40829), 0 states have call successors, (0), 0 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 14:37:48,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31932 states to 31932 states and 40829 transitions. [2024-12-02 14:37:48,903 INFO L78 Accepts]: Start accepts. Automaton has 31932 states and 40829 transitions. Word has length 78 [2024-12-02 14:37:48,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:37:48,903 INFO L471 AbstractCegarLoop]: Abstraction has 31932 states and 40829 transitions. [2024-12-02 14:37:48,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 14:37:48,903 INFO L276 IsEmpty]: Start isEmpty. Operand 31932 states and 40829 transitions. [2024-12-02 14:37:48,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-12-02 14:37:48,908 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:37:48,908 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:37:48,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-12-02 14:37:48,908 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:37:48,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:37:48,909 INFO L85 PathProgramCache]: Analyzing trace with hash 660908331, now seen corresponding path program 1 times [2024-12-02 14:37:48,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:37:48,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247763187] [2024-12-02 14:37:48,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:48,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:49,188 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:37:49,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:37:49,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247763187] [2024-12-02 14:37:49,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247763187] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:37:49,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718735749] [2024-12-02 14:37:49,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:37:49,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:37:49,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:37:49,191 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:37:49,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 14:37:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:37:49,346 INFO L256 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 14:37:49,351 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:37:50,518 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:37:50,518 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:37:51,721 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:37:51,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718735749] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:37:51,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:37:51,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 14] total 30 [2024-12-02 14:37:51,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853405057] [2024-12-02 14:37:51,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:37:51,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-12-02 14:37:51,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:37:51,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-12-02 14:37:51,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=748, Unknown=0, NotChecked=0, Total=870 [2024-12-02 14:37:51,723 INFO L87 Difference]: Start difference. First operand 31932 states and 40829 transitions. Second operand has 30 states, 30 states have (on average 9.1) internal successors, (273), 30 states have internal predecessors, (273), 0 states have call successors, (0), 0 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 14:38:10,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:38:10,448 INFO L93 Difference]: Finished difference Result 238118 states and 301469 transitions. [2024-12-02 14:38:10,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 257 states. [2024-12-02 14:38:10,449 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.1) internal successors, (273), 30 states have internal predecessors, (273), 0 states have call successors, (0), 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 97 [2024-12-02 14:38:10,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:38:10,648 INFO L225 Difference]: With dead ends: 238118 [2024-12-02 14:38:10,649 INFO L226 Difference]: Without dead ends: 206820 [2024-12-02 14:38:10,694 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 281 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33463 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=8954, Invalid=70852, Unknown=0, NotChecked=0, Total=79806 [2024-12-02 14:38:10,695 INFO L435 NwaCegarLoop]: 550 mSDtfsCounter, 11929 mSDsluCounter, 7530 mSDsCounter, 0 mSdLazyCounter, 8421 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11929 SdHoareTripleChecker+Valid, 8080 SdHoareTripleChecker+Invalid, 8643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 8421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:38:10,695 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11929 Valid, 8080 Invalid, 8643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 8421 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-12-02 14:38:10,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206820 states. [2024-12-02 14:38:11,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206820 to 45428. [2024-12-02 14:38:11,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45428 states, 45427 states have (on average 1.2772139916789575) internal successors, (58020), 45427 states have internal predecessors, (58020), 0 states have call successors, (0), 0 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 14:38:11,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45428 states to 45428 states and 58020 transitions. [2024-12-02 14:38:11,623 INFO L78 Accepts]: Start accepts. Automaton has 45428 states and 58020 transitions. Word has length 97 [2024-12-02 14:38:11,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:38:11,623 INFO L471 AbstractCegarLoop]: Abstraction has 45428 states and 58020 transitions. [2024-12-02 14:38:11,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.1) internal successors, (273), 30 states have internal predecessors, (273), 0 states have call successors, (0), 0 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 14:38:11,623 INFO L276 IsEmpty]: Start isEmpty. Operand 45428 states and 58020 transitions. [2024-12-02 14:38:11,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 14:38:11,629 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:38:11,629 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:38:11,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 14:38:11,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:38:11,830 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:38:11,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:38:11,831 INFO L85 PathProgramCache]: Analyzing trace with hash 2025763031, now seen corresponding path program 1 times [2024-12-02 14:38:11,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:38:11,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196373255] [2024-12-02 14:38:11,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:38:11,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:38:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:38:11,999 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:38:12,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:38:12,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196373255] [2024-12-02 14:38:12,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196373255] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:38:12,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875728161] [2024-12-02 14:38:12,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:38:12,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:38:12,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:38:12,002 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:38:12,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 14:38:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:38:12,157 INFO L256 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 14:38:12,160 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:38:12,413 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:38:12,413 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:38:12,537 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:38:12,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875728161] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:38:12,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:38:12,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2024-12-02 14:38:12,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272345113] [2024-12-02 14:38:12,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:38:12,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 14:38:12,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:38:12,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 14:38:12,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-12-02 14:38:12,538 INFO L87 Difference]: Start difference. First operand 45428 states and 58020 transitions. Second operand has 14 states, 14 states have (on average 20.357142857142858) internal successors, (285), 14 states have internal predecessors, (285), 0 states have call successors, (0), 0 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 14:38:12,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:38:12,970 INFO L93 Difference]: Finished difference Result 102249 states and 130656 transitions. [2024-12-02 14:38:12,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 14:38:12,971 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 20.357142857142858) internal successors, (285), 14 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2024-12-02 14:38:12,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:38:13,014 INFO L225 Difference]: With dead ends: 102249 [2024-12-02 14:38:13,014 INFO L226 Difference]: Without dead ends: 57461 [2024-12-02 14:38:13,034 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 203 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2024-12-02 14:38:13,035 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 1560 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1560 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:38:13,035 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1560 Valid, 671 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 14:38:13,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57461 states. [2024-12-02 14:38:13,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57461 to 48393. [2024-12-02 14:38:13,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48393 states, 48392 states have (on average 1.2548768391469665) internal successors, (60726), 48392 states have internal predecessors, (60726), 0 states have call successors, (0), 0 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 14:38:13,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48393 states to 48393 states and 60726 transitions. [2024-12-02 14:38:13,588 INFO L78 Accepts]: Start accepts. Automaton has 48393 states and 60726 transitions. Word has length 105 [2024-12-02 14:38:13,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:38:13,588 INFO L471 AbstractCegarLoop]: Abstraction has 48393 states and 60726 transitions. [2024-12-02 14:38:13,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.357142857142858) internal successors, (285), 14 states have internal predecessors, (285), 0 states have call successors, (0), 0 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 14:38:13,588 INFO L276 IsEmpty]: Start isEmpty. Operand 48393 states and 60726 transitions. [2024-12-02 14:38:13,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 14:38:13,594 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:38:13,594 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:38:13,599 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 14:38:13,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:38:13,794 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:38:13,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:38:13,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1268093490, now seen corresponding path program 1 times [2024-12-02 14:38:13,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:38:13,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211163594] [2024-12-02 14:38:13,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:38:13,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:38:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:38:13,861 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:38:13,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:38:13,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211163594] [2024-12-02 14:38:13,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211163594] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:38:13,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:38:13,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:38:13,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807870460] [2024-12-02 14:38:13,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:38:13,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:38:13,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:38:13,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:38:13,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:38:13,863 INFO L87 Difference]: Start difference. First operand 48393 states and 60726 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 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 14:38:14,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:38:14,080 INFO L93 Difference]: Finished difference Result 96669 states and 121113 transitions. [2024-12-02 14:38:14,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 14:38:14,081 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-12-02 14:38:14,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:38:14,115 INFO L225 Difference]: With dead ends: 96669 [2024-12-02 14:38:14,115 INFO L226 Difference]: Without dead ends: 48942 [2024-12-02 14:38:14,132 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:38:14,133 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 381 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:38:14,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 355 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:38:14,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48942 states. [2024-12-02 14:38:14,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48942 to 46196. [2024-12-02 14:38:14,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46196 states, 46195 states have (on average 1.232059746725836) internal successors, (56915), 46195 states have internal predecessors, (56915), 0 states have call successors, (0), 0 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 14:38:14,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46196 states to 46196 states and 56915 transitions. [2024-12-02 14:38:14,625 INFO L78 Accepts]: Start accepts. Automaton has 46196 states and 56915 transitions. Word has length 107 [2024-12-02 14:38:14,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:38:14,625 INFO L471 AbstractCegarLoop]: Abstraction has 46196 states and 56915 transitions. [2024-12-02 14:38:14,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 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 14:38:14,625 INFO L276 IsEmpty]: Start isEmpty. Operand 46196 states and 56915 transitions. [2024-12-02 14:38:14,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 14:38:14,634 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:38:14,634 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:38:14,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-12-02 14:38:14,634 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:38:14,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:38:14,635 INFO L85 PathProgramCache]: Analyzing trace with hash 465454406, now seen corresponding path program 1 times [2024-12-02 14:38:14,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:38:14,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880963770] [2024-12-02 14:38:14,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:38:14,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:38:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:38:14,726 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:38:14,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:38:14,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880963770] [2024-12-02 14:38:14,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880963770] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:38:14,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787019190] [2024-12-02 14:38:14,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:38:14,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:38:14,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:38:14,728 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:38:14,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 14:38:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:38:14,867 INFO L256 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 14:38:14,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:38:15,105 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:38:15,105 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:38:15,255 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:38:15,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787019190] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:38:15,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:38:15,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2024-12-02 14:38:15,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650679800] [2024-12-02 14:38:15,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:38:15,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 14:38:15,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:38:15,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 14:38:15,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-12-02 14:38:15,257 INFO L87 Difference]: Start difference. First operand 46196 states and 56915 transitions. Second operand has 14 states, 14 states have (on average 21.071428571428573) internal successors, (295), 14 states have internal predecessors, (295), 0 states have call successors, (0), 0 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 14:38:15,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:38:15,779 INFO L93 Difference]: Finished difference Result 108351 states and 133803 transitions. [2024-12-02 14:38:15,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 14:38:15,780 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 21.071428571428573) internal successors, (295), 14 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-12-02 14:38:15,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:38:15,834 INFO L225 Difference]: With dead ends: 108351 [2024-12-02 14:38:15,834 INFO L226 Difference]: Without dead ends: 62865 [2024-12-02 14:38:15,858 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 207 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2024-12-02 14:38:15,858 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 1512 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:38:15,859 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 809 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 14:38:15,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62865 states. [2024-12-02 14:38:16,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62865 to 52982. [2024-12-02 14:38:16,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52982 states, 52981 states have (on average 1.2176629357694269) internal successors, (64513), 52981 states have internal predecessors, (64513), 0 states have call successors, (0), 0 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 14:38:16,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52982 states to 52982 states and 64513 transitions. [2024-12-02 14:38:16,669 INFO L78 Accepts]: Start accepts. Automaton has 52982 states and 64513 transitions. Word has length 107 [2024-12-02 14:38:16,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:38:16,669 INFO L471 AbstractCegarLoop]: Abstraction has 52982 states and 64513 transitions. [2024-12-02 14:38:16,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 21.071428571428573) internal successors, (295), 14 states have internal predecessors, (295), 0 states have call successors, (0), 0 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 14:38:16,669 INFO L276 IsEmpty]: Start isEmpty. Operand 52982 states and 64513 transitions. [2024-12-02 14:38:16,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 14:38:16,674 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:38:16,674 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:38:16,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 14:38:16,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:38:16,874 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:38:16,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:38:16,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1312295299, now seen corresponding path program 1 times [2024-12-02 14:38:16,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:38:16,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744576368] [2024-12-02 14:38:16,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:38:16,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:38:16,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:38:16,919 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 14:38:16,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:38:16,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744576368] [2024-12-02 14:38:16,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744576368] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:38:16,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:38:16,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:38:16,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624710439] [2024-12-02 14:38:16,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:38:16,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:38:16,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:38:16,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:38:16,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:38:16,920 INFO L87 Difference]: Start difference. First operand 52982 states and 64513 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 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 14:38:17,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:38:17,192 INFO L93 Difference]: Finished difference Result 131347 states and 160437 transitions. [2024-12-02 14:38:17,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:38:17,193 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 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 108 [2024-12-02 14:38:17,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:38:17,250 INFO L225 Difference]: With dead ends: 131347 [2024-12-02 14:38:17,250 INFO L226 Difference]: Without dead ends: 82499 [2024-12-02 14:38:17,276 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:38:17,276 INFO L435 NwaCegarLoop]: 179 mSDtfsCounter, 137 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:38:17,276 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 429 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:38:17,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82499 states. [2024-12-02 14:38:17,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82499 to 54942. [2024-12-02 14:38:17,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54942 states, 54941 states have (on average 1.2194353943321017) internal successors, (66997), 54941 states have internal predecessors, (66997), 0 states have call successors, (0), 0 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 14:38:17,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54942 states to 54942 states and 66997 transitions. [2024-12-02 14:38:17,880 INFO L78 Accepts]: Start accepts. Automaton has 54942 states and 66997 transitions. Word has length 108 [2024-12-02 14:38:17,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:38:17,880 INFO L471 AbstractCegarLoop]: Abstraction has 54942 states and 66997 transitions. [2024-12-02 14:38:17,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 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 14:38:17,880 INFO L276 IsEmpty]: Start isEmpty. Operand 54942 states and 66997 transitions. [2024-12-02 14:38:17,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 14:38:17,885 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:38:17,885 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:38:17,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-12-02 14:38:17,885 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:38:17,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:38:17,886 INFO L85 PathProgramCache]: Analyzing trace with hash -383053058, now seen corresponding path program 1 times [2024-12-02 14:38:17,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:38:17,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852712237] [2024-12-02 14:38:17,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:38:17,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:38:17,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:38:18,096 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:38:18,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:38:18,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852712237] [2024-12-02 14:38:18,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852712237] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:38:18,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:38:18,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 14:38:18,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082444741] [2024-12-02 14:38:18,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:38:18,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 14:38:18,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:38:18,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 14:38:18,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:38:18,097 INFO L87 Difference]: Start difference. First operand 54942 states and 66997 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 9 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 14:38:18,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:38:18,795 INFO L93 Difference]: Finished difference Result 111544 states and 135928 transitions. [2024-12-02 14:38:18,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 14:38:18,796 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 9 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2024-12-02 14:38:18,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:38:18,846 INFO L225 Difference]: With dead ends: 111544 [2024-12-02 14:38:18,846 INFO L226 Difference]: Without dead ends: 86166 [2024-12-02 14:38:18,856 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2024-12-02 14:38:18,857 INFO L435 NwaCegarLoop]: 158 mSDtfsCounter, 735 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:38:18,857 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [735 Valid, 789 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 14:38:18,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86166 states. [2024-12-02 14:38:19,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86166 to 83776. [2024-12-02 14:38:19,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83776 states, 83775 states have (on average 1.21913458669054) internal successors, (102133), 83775 states have internal predecessors, (102133), 0 states have call successors, (0), 0 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 14:38:19,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83776 states to 83776 states and 102133 transitions. [2024-12-02 14:38:19,708 INFO L78 Accepts]: Start accepts. Automaton has 83776 states and 102133 transitions. Word has length 108 [2024-12-02 14:38:19,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:38:19,708 INFO L471 AbstractCegarLoop]: Abstraction has 83776 states and 102133 transitions. [2024-12-02 14:38:19,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 9 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 14:38:19,708 INFO L276 IsEmpty]: Start isEmpty. Operand 83776 states and 102133 transitions. [2024-12-02 14:38:19,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-12-02 14:38:19,714 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:38:19,714 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:38:19,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-12-02 14:38:19,714 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:38:19,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:38:19,715 INFO L85 PathProgramCache]: Analyzing trace with hash -2074123647, now seen corresponding path program 1 times [2024-12-02 14:38:19,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:38:19,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385348777] [2024-12-02 14:38:19,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:38:19,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:38:19,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:38:20,014 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:38:20,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:38:20,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385348777] [2024-12-02 14:38:20,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385348777] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:38:20,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780478612] [2024-12-02 14:38:20,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:38:20,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:38:20,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:38:20,016 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:38:20,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 14:38:20,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:38:20,146 INFO L256 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 14:38:20,148 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:38:21,056 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:38:21,056 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:38:22,096 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:38:22,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780478612] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:38:22,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:38:22,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 16] total 37 [2024-12-02 14:38:22,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324595082] [2024-12-02 14:38:22,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:38:22,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-12-02 14:38:22,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:38:22,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-12-02 14:38:22,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1239, Unknown=0, NotChecked=0, Total=1406 [2024-12-02 14:38:22,098 INFO L87 Difference]: Start difference. First operand 83776 states and 102133 transitions. Second operand has 38 states, 38 states have (on average 7.973684210526316) internal successors, (303), 37 states have internal predecessors, (303), 0 states have call successors, (0), 0 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 14:38:24,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:38:24,496 INFO L93 Difference]: Finished difference Result 281525 states and 342513 transitions. [2024-12-02 14:38:24,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-12-02 14:38:24,496 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 7.973684210526316) internal successors, (303), 37 states have internal predecessors, (303), 0 states have call successors, (0), 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 109 [2024-12-02 14:38:24,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:38:24,674 INFO L225 Difference]: With dead ends: 281525 [2024-12-02 14:38:24,674 INFO L226 Difference]: Without dead ends: 198066 [2024-12-02 14:38:24,725 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 188 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1050 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=749, Invalid=3411, Unknown=0, NotChecked=0, Total=4160 [2024-12-02 14:38:24,726 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 2534 mSDsluCounter, 2886 mSDsCounter, 0 mSdLazyCounter, 2897 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2534 SdHoareTripleChecker+Valid, 3066 SdHoareTripleChecker+Invalid, 2947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 2897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:38:24,726 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2534 Valid, 3066 Invalid, 2947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 2897 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 14:38:24,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198066 states. [2024-12-02 14:38:25,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198066 to 114855. [2024-12-02 14:38:25,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114855 states, 114854 states have (on average 1.212051822313546) internal successors, (139209), 114854 states have internal predecessors, (139209), 0 states have call successors, (0), 0 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 14:38:26,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114855 states to 114855 states and 139209 transitions. [2024-12-02 14:38:26,054 INFO L78 Accepts]: Start accepts. Automaton has 114855 states and 139209 transitions. Word has length 109 [2024-12-02 14:38:26,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:38:26,054 INFO L471 AbstractCegarLoop]: Abstraction has 114855 states and 139209 transitions. [2024-12-02 14:38:26,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 7.973684210526316) internal successors, (303), 37 states have internal predecessors, (303), 0 states have call successors, (0), 0 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 14:38:26,054 INFO L276 IsEmpty]: Start isEmpty. Operand 114855 states and 139209 transitions. [2024-12-02 14:38:26,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-12-02 14:38:26,060 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:38:26,060 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:38:26,068 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 14:38:26,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:38:26,260 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:38:26,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:38:26,261 INFO L85 PathProgramCache]: Analyzing trace with hash 84880972, now seen corresponding path program 1 times [2024-12-02 14:38:26,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:38:26,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018684990] [2024-12-02 14:38:26,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:38:26,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:38:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:38:26,303 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 14:38:26,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:38:26,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018684990] [2024-12-02 14:38:26,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018684990] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:38:26,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:38:26,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:38:26,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612844996] [2024-12-02 14:38:26,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:38:26,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:38:26,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:38:26,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:38:26,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:38:26,304 INFO L87 Difference]: Start difference. First operand 114855 states and 139209 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 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 14:38:26,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:38:26,710 INFO L93 Difference]: Finished difference Result 200559 states and 242182 transitions. [2024-12-02 14:38:26,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:38:26,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 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 110 [2024-12-02 14:38:26,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:38:26,842 INFO L225 Difference]: With dead ends: 200559 [2024-12-02 14:38:26,842 INFO L226 Difference]: Without dead ends: 164884 [2024-12-02 14:38:26,880 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:38:26,880 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 114 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:38:26,881 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 442 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:38:26,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164884 states. [2024-12-02 14:38:28,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164884 to 132407. [2024-12-02 14:38:28,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132407 states, 132406 states have (on average 1.2126036584444813) internal successors, (160556), 132406 states have internal predecessors, (160556), 0 states have call successors, (0), 0 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 14:38:28,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132407 states to 132407 states and 160556 transitions. [2024-12-02 14:38:28,364 INFO L78 Accepts]: Start accepts. Automaton has 132407 states and 160556 transitions. Word has length 110 [2024-12-02 14:38:28,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:38:28,364 INFO L471 AbstractCegarLoop]: Abstraction has 132407 states and 160556 transitions. [2024-12-02 14:38:28,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 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 14:38:28,364 INFO L276 IsEmpty]: Start isEmpty. Operand 132407 states and 160556 transitions. [2024-12-02 14:38:28,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-12-02 14:38:28,370 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:38:28,371 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:38:28,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-12-02 14:38:28,371 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:38:28,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:38:28,371 INFO L85 PathProgramCache]: Analyzing trace with hash 721442887, now seen corresponding path program 1 times [2024-12-02 14:38:28,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:38:28,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234040746] [2024-12-02 14:38:28,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:38:28,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:38:28,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:38:28,822 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:38:28,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:38:28,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234040746] [2024-12-02 14:38:28,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234040746] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:38:28,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968163020] [2024-12-02 14:38:28,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:38:28,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:38:28,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:38:28,824 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:38:28,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 14:38:28,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:38:28,976 INFO L256 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-12-02 14:38:28,978 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:38:30,585 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:38:30,585 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:38:32,120 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:38:32,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968163020] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:38:32,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:38:32,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 19, 16] total 43 [2024-12-02 14:38:32,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724267090] [2024-12-02 14:38:32,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:38:32,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-12-02 14:38:32,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:38:32,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-12-02 14:38:32,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1637, Unknown=0, NotChecked=0, Total=1806 [2024-12-02 14:38:32,121 INFO L87 Difference]: Start difference. First operand 132407 states and 160556 transitions. Second operand has 43 states, 43 states have (on average 7.232558139534884) internal successors, (311), 43 states have internal predecessors, (311), 0 states have call successors, (0), 0 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 14:39:00,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:39:00,055 INFO L93 Difference]: Finished difference Result 377767 states and 451626 transitions. [2024-12-02 14:39:00,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 276 states. [2024-12-02 14:39:00,055 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 7.232558139534884) internal successors, (311), 43 states have internal predecessors, (311), 0 states have call successors, (0), 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 110 [2024-12-02 14:39:00,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:39:00,348 INFO L225 Difference]: With dead ends: 377767 [2024-12-02 14:39:00,348 INFO L226 Difference]: Without dead ends: 352296 [2024-12-02 14:39:00,415 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40641 ImplicationChecksByTransitivity, 22.5s TimeCoverageRelationStatistics Valid=12997, Invalid=87175, Unknown=0, NotChecked=0, Total=100172 [2024-12-02 14:39:00,416 INFO L435 NwaCegarLoop]: 284 mSDtfsCounter, 7439 mSDsluCounter, 6633 mSDsCounter, 0 mSdLazyCounter, 8090 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7439 SdHoareTripleChecker+Valid, 6917 SdHoareTripleChecker+Invalid, 8297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 8090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-12-02 14:39:00,416 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7439 Valid, 6917 Invalid, 8297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 8090 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-12-02 14:39:00,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352296 states. [2024-12-02 14:39:02,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352296 to 132509. [2024-12-02 14:39:02,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132509 states, 132508 states have (on average 1.2125833911914752) internal successors, (160677), 132508 states have internal predecessors, (160677), 0 states have call successors, (0), 0 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 14:39:02,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132509 states to 132509 states and 160677 transitions. [2024-12-02 14:39:02,262 INFO L78 Accepts]: Start accepts. Automaton has 132509 states and 160677 transitions. Word has length 110 [2024-12-02 14:39:02,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:39:02,262 INFO L471 AbstractCegarLoop]: Abstraction has 132509 states and 160677 transitions. [2024-12-02 14:39:02,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 7.232558139534884) internal successors, (311), 43 states have internal predecessors, (311), 0 states have call successors, (0), 0 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 14:39:02,263 INFO L276 IsEmpty]: Start isEmpty. Operand 132509 states and 160677 transitions. [2024-12-02 14:39:02,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-12-02 14:39:02,267 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:39:02,267 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:39:02,273 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 14:39:02,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:39:02,468 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:39:02,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:39:02,470 INFO L85 PathProgramCache]: Analyzing trace with hash 480825969, now seen corresponding path program 1 times [2024-12-02 14:39:02,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:39:02,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927972373] [2024-12-02 14:39:02,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:39:02,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:39:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:39:02,515 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 14:39:02,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:39:02,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927972373] [2024-12-02 14:39:02,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927972373] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:39:02,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:39:02,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:39:02,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610466427] [2024-12-02 14:39:02,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:39:02,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:39:02,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:39:02,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:39:02,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:39:02,516 INFO L87 Difference]: Start difference. First operand 132509 states and 160677 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 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 14:39:03,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:39:03,080 INFO L93 Difference]: Finished difference Result 229444 states and 277547 transitions. [2024-12-02 14:39:03,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:39:03,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 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 110 [2024-12-02 14:39:03,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:39:03,233 INFO L225 Difference]: With dead ends: 229444 [2024-12-02 14:39:03,233 INFO L226 Difference]: Without dead ends: 189356 [2024-12-02 14:39:03,267 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:39:03,267 INFO L435 NwaCegarLoop]: 181 mSDtfsCounter, 127 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:39:03,267 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 432 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:39:03,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189356 states. [2024-12-02 14:39:04,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189356 to 152353. [2024-12-02 14:39:04,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152353 states, 152352 states have (on average 1.2134858748162152) internal successors, (184877), 152352 states have internal predecessors, (184877), 0 states have call successors, (0), 0 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 14:39:04,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152353 states to 152353 states and 184877 transitions. [2024-12-02 14:39:04,740 INFO L78 Accepts]: Start accepts. Automaton has 152353 states and 184877 transitions. Word has length 110 [2024-12-02 14:39:04,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:39:04,740 INFO L471 AbstractCegarLoop]: Abstraction has 152353 states and 184877 transitions. [2024-12-02 14:39:04,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 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 14:39:04,740 INFO L276 IsEmpty]: Start isEmpty. Operand 152353 states and 184877 transitions. [2024-12-02 14:39:04,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-12-02 14:39:04,745 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:39:04,745 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:39:04,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-12-02 14:39:04,745 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:39:04,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:39:04,746 INFO L85 PathProgramCache]: Analyzing trace with hash 2140047382, now seen corresponding path program 1 times [2024-12-02 14:39:04,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:39:04,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710276020] [2024-12-02 14:39:04,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:39:04,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:39:04,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:39:05,036 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:39:05,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:39:05,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710276020] [2024-12-02 14:39:05,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710276020] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:39:05,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69640033] [2024-12-02 14:39:05,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:39:05,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:39:05,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:39:05,038 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:39:05,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 14:39:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:39:05,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-12-02 14:39:05,182 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:39:06,075 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:39:06,075 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:39:06,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69640033] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:39:06,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:39:06,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [11] total 24 [2024-12-02 14:39:06,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67972385] [2024-12-02 14:39:06,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:39:06,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 14:39:06,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:39:06,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 14:39:06,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2024-12-02 14:39:06,076 INFO L87 Difference]: Start difference. First operand 152353 states and 184877 transitions. Second operand has 14 states, 14 states have (on average 7.857142857142857) internal successors, (110), 14 states have internal predecessors, (110), 0 states have call successors, (0), 0 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 14:39:06,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:39:06,934 INFO L93 Difference]: Finished difference Result 202458 states and 245634 transitions. [2024-12-02 14:39:06,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 14:39:06,934 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.857142857142857) internal successors, (110), 14 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2024-12-02 14:39:06,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:39:07,311 INFO L225 Difference]: With dead ends: 202458 [2024-12-02 14:39:07,311 INFO L226 Difference]: Without dead ends: 162521 [2024-12-02 14:39:07,330 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=133, Invalid=797, Unknown=0, NotChecked=0, Total=930 [2024-12-02 14:39:07,331 INFO L435 NwaCegarLoop]: 291 mSDtfsCounter, 791 mSDsluCounter, 2380 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 2671 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:39:07,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 2671 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 14:39:07,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162521 states. [2024-12-02 14:39:08,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162521 to 161411. [2024-12-02 14:39:08,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161411 states, 161410 states have (on average 1.2120872312743944) internal successors, (195643), 161410 states have internal predecessors, (195643), 0 states have call successors, (0), 0 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 14:39:09,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161411 states to 161411 states and 195643 transitions. [2024-12-02 14:39:09,027 INFO L78 Accepts]: Start accepts. Automaton has 161411 states and 195643 transitions. Word has length 110 [2024-12-02 14:39:09,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:39:09,028 INFO L471 AbstractCegarLoop]: Abstraction has 161411 states and 195643 transitions. [2024-12-02 14:39:09,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.857142857142857) internal successors, (110), 14 states have internal predecessors, (110), 0 states have call successors, (0), 0 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 14:39:09,028 INFO L276 IsEmpty]: Start isEmpty. Operand 161411 states and 195643 transitions. [2024-12-02 14:39:09,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-12-02 14:39:09,032 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:39:09,033 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:39:09,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 14:39:09,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:39:09,233 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:39:09,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:39:09,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1378437232, now seen corresponding path program 1 times [2024-12-02 14:39:09,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:39:09,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202976747] [2024-12-02 14:39:09,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:39:09,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:39:09,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:39:09,901 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:39:09,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:39:09,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202976747] [2024-12-02 14:39:09,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202976747] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:39:09,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:39:09,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 14:39:09,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556664494] [2024-12-02 14:39:09,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:39:09,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 14:39:09,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:39:09,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 14:39:09,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2024-12-02 14:39:09,902 INFO L87 Difference]: Start difference. First operand 161411 states and 195643 transitions. Second operand has 16 states, 16 states have (on average 6.875) internal successors, (110), 15 states have internal predecessors, (110), 0 states have call successors, (0), 0 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 14:39:12,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:39:12,798 INFO L93 Difference]: Finished difference Result 269924 states and 324507 transitions. [2024-12-02 14:39:12,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-12-02 14:39:12,798 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.875) internal successors, (110), 15 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2024-12-02 14:39:12,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:39:13,052 INFO L225 Difference]: With dead ends: 269924 [2024-12-02 14:39:13,052 INFO L226 Difference]: Without dead ends: 248970 [2024-12-02 14:39:13,087 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1218 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=815, Invalid=3475, Unknown=0, NotChecked=0, Total=4290 [2024-12-02 14:39:13,088 INFO L435 NwaCegarLoop]: 205 mSDtfsCounter, 1689 mSDsluCounter, 1975 mSDsCounter, 0 mSdLazyCounter, 2089 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1689 SdHoareTripleChecker+Valid, 2180 SdHoareTripleChecker+Invalid, 2112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:39:13,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1689 Valid, 2180 Invalid, 2112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2089 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 14:39:13,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248970 states. [2024-12-02 14:39:14,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248970 to 161384. [2024-12-02 14:39:14,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161384 states, 161383 states have (on average 1.212116517848844) internal successors, (195615), 161383 states have internal predecessors, (195615), 0 states have call successors, (0), 0 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 14:39:14,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161384 states to 161384 states and 195615 transitions. [2024-12-02 14:39:14,920 INFO L78 Accepts]: Start accepts. Automaton has 161384 states and 195615 transitions. Word has length 110 [2024-12-02 14:39:14,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:39:14,920 INFO L471 AbstractCegarLoop]: Abstraction has 161384 states and 195615 transitions. [2024-12-02 14:39:14,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.875) internal successors, (110), 15 states have internal predecessors, (110), 0 states have call successors, (0), 0 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 14:39:14,920 INFO L276 IsEmpty]: Start isEmpty. Operand 161384 states and 195615 transitions. [2024-12-02 14:39:14,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-12-02 14:39:14,925 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:39:14,925 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:39:14,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-12-02 14:39:14,926 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:39:14,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:39:14,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1137378992, now seen corresponding path program 1 times [2024-12-02 14:39:14,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:39:14,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804656716] [2024-12-02 14:39:14,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:39:14,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:39:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:39:15,432 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:39:15,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:39:15,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804656716] [2024-12-02 14:39:15,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804656716] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:39:15,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372009983] [2024-12-02 14:39:15,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:39:15,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:39:15,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:39:15,435 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:39:15,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 14:39:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:39:15,634 INFO L256 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-12-02 14:39:15,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:39:18,523 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:39:18,523 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:39:18,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372009983] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:39:18,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:39:18,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [15] total 30 [2024-12-02 14:39:18,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725634531] [2024-12-02 14:39:18,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:39:18,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 14:39:18,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:39:18,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 14:39:18,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=819, Unknown=0, NotChecked=0, Total=930 [2024-12-02 14:39:18,525 INFO L87 Difference]: Start difference. First operand 161384 states and 195615 transitions. Second operand has 18 states, 18 states have (on average 6.166666666666667) internal successors, (111), 17 states have internal predecessors, (111), 0 states have call successors, (0), 0 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 14:39:20,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:39:20,580 INFO L93 Difference]: Finished difference Result 210628 states and 255545 transitions. [2024-12-02 14:39:20,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 14:39:20,580 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.166666666666667) internal successors, (111), 17 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2024-12-02 14:39:20,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:39:20,725 INFO L225 Difference]: With dead ends: 210628 [2024-12-02 14:39:20,725 INFO L226 Difference]: Without dead ends: 171810 [2024-12-02 14:39:20,762 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=170, Invalid=1236, Unknown=0, NotChecked=0, Total=1406 [2024-12-02 14:39:20,763 INFO L435 NwaCegarLoop]: 191 mSDtfsCounter, 325 mSDsluCounter, 2187 mSDsCounter, 0 mSdLazyCounter, 1945 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 2378 SdHoareTripleChecker+Invalid, 1949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:39:20,763 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 2378 Invalid, 1949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1945 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 14:39:20,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171810 states. [2024-12-02 14:39:21,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171810 to 161495. [2024-12-02 14:39:22,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161495 states, 161494 states have (on average 1.2120016842730998) internal successors, (195731), 161494 states have internal predecessors, (195731), 0 states have call successors, (0), 0 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 14:39:22,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161495 states to 161495 states and 195731 transitions. [2024-12-02 14:39:22,167 INFO L78 Accepts]: Start accepts. Automaton has 161495 states and 195731 transitions. Word has length 111 [2024-12-02 14:39:22,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:39:22,168 INFO L471 AbstractCegarLoop]: Abstraction has 161495 states and 195731 transitions. [2024-12-02 14:39:22,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.166666666666667) internal successors, (111), 17 states have internal predecessors, (111), 0 states have call successors, (0), 0 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 14:39:22,168 INFO L276 IsEmpty]: Start isEmpty. Operand 161495 states and 195731 transitions. [2024-12-02 14:39:22,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-12-02 14:39:22,173 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:39:22,173 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:39:22,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 14:39:22,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:39:22,374 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:39:22,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:39:22,375 INFO L85 PathProgramCache]: Analyzing trace with hash -770761609, now seen corresponding path program 1 times [2024-12-02 14:39:22,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:39:22,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737473172] [2024-12-02 14:39:22,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:39:22,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:39:22,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:39:23,470 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:39:23,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:39:23,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737473172] [2024-12-02 14:39:23,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737473172] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:39:23,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548147316] [2024-12-02 14:39:23,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:39:23,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:39:23,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:39:23,472 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:39:23,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 14:39:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:39:23,626 INFO L256 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 14:39:23,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:39:25,054 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:39:25,054 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:39:25,944 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:39:25,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548147316] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:39:25,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:39:25,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15, 14] total 42 [2024-12-02 14:39:25,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981948012] [2024-12-02 14:39:25,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:39:25,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-12-02 14:39:25,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:39:25,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-12-02 14:39:25,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1580, Unknown=0, NotChecked=0, Total=1722 [2024-12-02 14:39:25,946 INFO L87 Difference]: Start difference. First operand 161495 states and 195731 transitions. Second operand has 42 states, 42 states have (on average 6.833333333333333) internal successors, (287), 42 states have internal predecessors, (287), 0 states have call successors, (0), 0 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 14:39:34,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:39:34,487 INFO L93 Difference]: Finished difference Result 254298 states and 306348 transitions. [2024-12-02 14:39:34,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2024-12-02 14:39:34,487 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 6.833333333333333) internal successors, (287), 42 states have internal predecessors, (287), 0 states have call successors, (0), 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 111 [2024-12-02 14:39:34,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:39:34,663 INFO L225 Difference]: With dead ends: 254298 [2024-12-02 14:39:34,663 INFO L226 Difference]: Without dead ends: 228384 [2024-12-02 14:39:34,687 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 202 SyntacticMatches, 2 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4562 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=2426, Invalid=14086, Unknown=0, NotChecked=0, Total=16512 [2024-12-02 14:39:34,687 INFO L435 NwaCegarLoop]: 429 mSDtfsCounter, 2537 mSDsluCounter, 10635 mSDsCounter, 0 mSdLazyCounter, 5101 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2537 SdHoareTripleChecker+Valid, 11064 SdHoareTripleChecker+Invalid, 5160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 5101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-12-02 14:39:34,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2537 Valid, 11064 Invalid, 5160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 5101 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-12-02 14:39:34,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228384 states. [2024-12-02 14:39:35,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228384 to 176729. [2024-12-02 14:39:36,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176729 states, 176728 states have (on average 1.2097177583631342) internal successors, (213791), 176728 states have internal predecessors, (213791), 0 states have call successors, (0), 0 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 14:39:36,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176729 states to 176729 states and 213791 transitions. [2024-12-02 14:39:36,400 INFO L78 Accepts]: Start accepts. Automaton has 176729 states and 213791 transitions. Word has length 111 [2024-12-02 14:39:36,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:39:36,400 INFO L471 AbstractCegarLoop]: Abstraction has 176729 states and 213791 transitions. [2024-12-02 14:39:36,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 6.833333333333333) internal successors, (287), 42 states have internal predecessors, (287), 0 states have call successors, (0), 0 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 14:39:36,400 INFO L276 IsEmpty]: Start isEmpty. Operand 176729 states and 213791 transitions. [2024-12-02 14:39:36,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-12-02 14:39:36,405 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:39:36,405 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:39:36,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 14:39:36,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:39:36,605 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:39:36,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:39:36,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1314544115, now seen corresponding path program 1 times [2024-12-02 14:39:36,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:39:36,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686010563] [2024-12-02 14:39:36,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:39:36,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:39:36,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:39:37,529 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:39:37,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:39:37,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686010563] [2024-12-02 14:39:37,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686010563] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:39:37,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581533808] [2024-12-02 14:39:37,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:39:37,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:39:37,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:39:37,531 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:39:37,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 14:39:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:39:37,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 14:39:37,686 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:39:38,709 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:39:38,709 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:39:39,534 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:39:39,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581533808] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:39:39,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:39:39,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15, 14] total 46 [2024-12-02 14:39:39,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312242715] [2024-12-02 14:39:39,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:39:39,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-12-02 14:39:39,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:39:39,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-12-02 14:39:39,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1926, Unknown=0, NotChecked=0, Total=2070 [2024-12-02 14:39:39,535 INFO L87 Difference]: Start difference. First operand 176729 states and 213791 transitions. Second operand has 46 states, 46 states have (on average 6.6521739130434785) internal successors, (306), 46 states have internal predecessors, (306), 0 states have call successors, (0), 0 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 14:39:46,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:39:46,216 INFO L93 Difference]: Finished difference Result 269869 states and 325755 transitions. [2024-12-02 14:39:46,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-12-02 14:39:46,217 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 6.6521739130434785) internal successors, (306), 46 states have internal predecessors, (306), 0 states have call successors, (0), 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 111 [2024-12-02 14:39:46,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:39:46,446 INFO L225 Difference]: With dead ends: 269869 [2024-12-02 14:39:46,446 INFO L226 Difference]: Without dead ends: 220009 [2024-12-02 14:39:46,500 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2052 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1443, Invalid=9477, Unknown=0, NotChecked=0, Total=10920 [2024-12-02 14:39:46,501 INFO L435 NwaCegarLoop]: 460 mSDtfsCounter, 2161 mSDsluCounter, 10623 mSDsCounter, 0 mSdLazyCounter, 4315 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2161 SdHoareTripleChecker+Valid, 11083 SdHoareTripleChecker+Invalid, 4338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 4315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:39:46,501 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2161 Valid, 11083 Invalid, 4338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 4315 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-12-02 14:39:46,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220009 states. [2024-12-02 14:39:47,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220009 to 176958. [2024-12-02 14:39:48,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176958 states, 176957 states have (on average 1.2077736399238233) internal successors, (213724), 176957 states have internal predecessors, (213724), 0 states have call successors, (0), 0 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 14:39:48,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176958 states to 176958 states and 213724 transitions. [2024-12-02 14:39:48,222 INFO L78 Accepts]: Start accepts. Automaton has 176958 states and 213724 transitions. Word has length 111 [2024-12-02 14:39:48,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:39:48,222 INFO L471 AbstractCegarLoop]: Abstraction has 176958 states and 213724 transitions. [2024-12-02 14:39:48,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 6.6521739130434785) internal successors, (306), 46 states have internal predecessors, (306), 0 states have call successors, (0), 0 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 14:39:48,222 INFO L276 IsEmpty]: Start isEmpty. Operand 176958 states and 213724 transitions. [2024-12-02 14:39:48,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-12-02 14:39:48,228 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:39:48,228 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:39:48,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 14:39:48,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-12-02 14:39:48,428 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:39:48,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:39:48,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1010320064, now seen corresponding path program 1 times [2024-12-02 14:39:48,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:39:48,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269165767] [2024-12-02 14:39:48,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:39:48,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:39:48,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:39:48,481 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:39:48,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:39:48,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269165767] [2024-12-02 14:39:48,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269165767] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:39:48,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:39:48,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:39:48,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474176380] [2024-12-02 14:39:48,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:39:48,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:39:48,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:39:48,481 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:39:48,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:39:48,481 INFO L87 Difference]: Start difference. First operand 176958 states and 213724 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 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 14:39:49,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:39:49,006 INFO L93 Difference]: Finished difference Result 344874 states and 416997 transitions. [2024-12-02 14:39:49,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:39:49,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2024-12-02 14:39:49,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:39:49,159 INFO L225 Difference]: With dead ends: 344874 [2024-12-02 14:39:49,159 INFO L226 Difference]: Without dead ends: 168936 [2024-12-02 14:39:49,228 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 14:39:49,228 INFO L435 NwaCegarLoop]: 208 mSDtfsCounter, 86 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:39:49,229 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 336 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:39:49,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168936 states. [2024-12-02 14:39:50,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168936 to 164632. [2024-12-02 14:39:50,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164632 states, 164631 states have (on average 1.182650898069015) internal successors, (194701), 164631 states have internal predecessors, (194701), 0 states have call successors, (0), 0 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 14:39:50,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164632 states to 164632 states and 194701 transitions. [2024-12-02 14:39:50,866 INFO L78 Accepts]: Start accepts. Automaton has 164632 states and 194701 transitions. Word has length 112 [2024-12-02 14:39:50,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:39:50,866 INFO L471 AbstractCegarLoop]: Abstraction has 164632 states and 194701 transitions. [2024-12-02 14:39:50,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 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 14:39:50,866 INFO L276 IsEmpty]: Start isEmpty. Operand 164632 states and 194701 transitions. [2024-12-02 14:39:50,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-12-02 14:39:50,870 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:39:50,870 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:39:50,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-12-02 14:39:50,870 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:39:50,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:39:50,870 INFO L85 PathProgramCache]: Analyzing trace with hash 803640477, now seen corresponding path program 1 times [2024-12-02 14:39:50,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:39:50,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256990454] [2024-12-02 14:39:50,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:39:50,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:39:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:39:51,498 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 14:39:51,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:39:51,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256990454] [2024-12-02 14:39:51,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256990454] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:39:51,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:39:51,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 14:39:51,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980130953] [2024-12-02 14:39:51,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:39:51,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 14:39:51,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:39:51,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 14:39:51,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-12-02 14:39:51,499 INFO L87 Difference]: Start difference. First operand 164632 states and 194701 transitions. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 0 states have call successors, (0), 0 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 14:39:52,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:39:52,363 INFO L93 Difference]: Finished difference Result 200531 states and 237333 transitions. [2024-12-02 14:39:52,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 14:39:52,363 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 0 states have call successors, (0), 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 112 [2024-12-02 14:39:52,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:39:52,505 INFO L225 Difference]: With dead ends: 200531 [2024-12-02 14:39:52,505 INFO L226 Difference]: Without dead ends: 174310 [2024-12-02 14:39:52,714 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2024-12-02 14:39:52,715 INFO L435 NwaCegarLoop]: 220 mSDtfsCounter, 1097 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1097 SdHoareTripleChecker+Valid, 1285 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:39:52,715 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1097 Valid, 1285 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 14:39:52,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174310 states. [2024-12-02 14:39:53,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174310 to 164517. [2024-12-02 14:39:54,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164517 states, 164516 states have (on average 1.1827299472391744) internal successors, (194578), 164516 states have internal predecessors, (194578), 0 states have call successors, (0), 0 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 14:39:54,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164517 states to 164517 states and 194578 transitions. [2024-12-02 14:39:54,212 INFO L78 Accepts]: Start accepts. Automaton has 164517 states and 194578 transitions. Word has length 112 [2024-12-02 14:39:54,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:39:54,212 INFO L471 AbstractCegarLoop]: Abstraction has 164517 states and 194578 transitions. [2024-12-02 14:39:54,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 0 states have call successors, (0), 0 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 14:39:54,212 INFO L276 IsEmpty]: Start isEmpty. Operand 164517 states and 194578 transitions. [2024-12-02 14:39:54,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-12-02 14:39:54,216 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:39:54,216 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:39:54,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-12-02 14:39:54,216 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:39:54,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:39:54,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1005464411, now seen corresponding path program 1 times [2024-12-02 14:39:54,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:39:54,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417994863] [2024-12-02 14:39:54,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:39:54,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:39:54,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:39:55,165 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:39:55,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:39:55,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417994863] [2024-12-02 14:39:55,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417994863] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:39:55,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784899012] [2024-12-02 14:39:55,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:39:55,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:39:55,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:39:55,167 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:39:55,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 14:39:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:39:55,314 INFO L256 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-12-02 14:39:55,316 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:39:57,121 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:39:57,122 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:39:58,595 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:39:58,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784899012] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:39:58,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:39:58,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 16] total 51 [2024-12-02 14:39:58,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798937346] [2024-12-02 14:39:58,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:39:58,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-12-02 14:39:58,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:39:58,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-12-02 14:39:58,596 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=2369, Unknown=0, NotChecked=0, Total=2550 [2024-12-02 14:39:58,596 INFO L87 Difference]: Start difference. First operand 164517 states and 194578 transitions. Second operand has 51 states, 51 states have (on average 6.098039215686274) internal successors, (311), 51 states have internal predecessors, (311), 0 states have call successors, (0), 0 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 14:40:12,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:40:12,183 INFO L93 Difference]: Finished difference Result 279302 states and 329472 transitions. [2024-12-02 14:40:12,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2024-12-02 14:40:12,184 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 6.098039215686274) internal successors, (311), 51 states have internal predecessors, (311), 0 states have call successors, (0), 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 112 [2024-12-02 14:40:12,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:40:12,397 INFO L225 Difference]: With dead ends: 279302 [2024-12-02 14:40:12,397 INFO L226 Difference]: Without dead ends: 254516 [2024-12-02 14:40:12,442 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6347 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=3595, Invalid=20897, Unknown=0, NotChecked=0, Total=24492 [2024-12-02 14:40:12,442 INFO L435 NwaCegarLoop]: 448 mSDtfsCounter, 4887 mSDsluCounter, 13686 mSDsCounter, 0 mSdLazyCounter, 6705 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4887 SdHoareTripleChecker+Valid, 14134 SdHoareTripleChecker+Invalid, 6807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 6705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-12-02 14:40:12,442 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4887 Valid, 14134 Invalid, 6807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 6705 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-12-02 14:40:12,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254516 states. [2024-12-02 14:40:13,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254516 to 164304. [2024-12-02 14:40:13,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164304 states, 164303 states have (on average 1.1813417892552176) internal successors, (194098), 164303 states have internal predecessors, (194098), 0 states have call successors, (0), 0 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 14:40:14,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164304 states to 164304 states and 194098 transitions. [2024-12-02 14:40:14,005 INFO L78 Accepts]: Start accepts. Automaton has 164304 states and 194098 transitions. Word has length 112 [2024-12-02 14:40:14,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:40:14,006 INFO L471 AbstractCegarLoop]: Abstraction has 164304 states and 194098 transitions. [2024-12-02 14:40:14,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 6.098039215686274) internal successors, (311), 51 states have internal predecessors, (311), 0 states have call successors, (0), 0 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 14:40:14,006 INFO L276 IsEmpty]: Start isEmpty. Operand 164304 states and 194098 transitions. [2024-12-02 14:40:14,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-02 14:40:14,011 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:40:14,011 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:40:14,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 14:40:14,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-12-02 14:40:14,212 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:40:14,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:40:14,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1880677827, now seen corresponding path program 1 times [2024-12-02 14:40:14,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:40:14,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726298029] [2024-12-02 14:40:14,213 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:40:14,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:40:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:40:14,275 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 14:40:14,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:40:14,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726298029] [2024-12-02 14:40:14,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726298029] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:40:14,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:40:14,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:40:14,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353378045] [2024-12-02 14:40:14,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:40:14,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:40:14,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:40:14,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:40:14,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:40:14,277 INFO L87 Difference]: Start difference. First operand 164304 states and 194098 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 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 14:40:14,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:40:14,883 INFO L93 Difference]: Finished difference Result 215928 states and 255115 transitions. [2024-12-02 14:40:14,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 14:40:14,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 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 114 [2024-12-02 14:40:14,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:40:15,011 INFO L225 Difference]: With dead ends: 215928 [2024-12-02 14:40:15,011 INFO L226 Difference]: Without dead ends: 162074 [2024-12-02 14:40:15,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:40:15,046 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 363 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:40:15,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 332 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:40:15,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162074 states. [2024-12-02 14:40:16,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162074 to 160208. [2024-12-02 14:40:16,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160208 states, 160207 states have (on average 1.1823078891683885) internal successors, (189414), 160207 states have internal predecessors, (189414), 0 states have call successors, (0), 0 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 14:40:16,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160208 states to 160208 states and 189414 transitions. [2024-12-02 14:40:16,839 INFO L78 Accepts]: Start accepts. Automaton has 160208 states and 189414 transitions. Word has length 114 [2024-12-02 14:40:16,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:40:16,839 INFO L471 AbstractCegarLoop]: Abstraction has 160208 states and 189414 transitions. [2024-12-02 14:40:16,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 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 14:40:16,839 INFO L276 IsEmpty]: Start isEmpty. Operand 160208 states and 189414 transitions. [2024-12-02 14:40:16,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-02 14:40:16,842 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:40:16,842 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:40:16,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-12-02 14:40:16,842 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:40:16,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:40:16,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1864136210, now seen corresponding path program 1 times [2024-12-02 14:40:16,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:40:16,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945440421] [2024-12-02 14:40:16,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:40:16,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:40:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:40:17,194 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:40:17,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:40:17,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945440421] [2024-12-02 14:40:17,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945440421] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:40:17,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455717818] [2024-12-02 14:40:17,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:40:17,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:40:17,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:40:17,196 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:40:17,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 14:40:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:40:17,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-12-02 14:40:17,364 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:40:19,179 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:40:19,179 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:40:21,226 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:40:21,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455717818] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:40:21,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:40:21,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 18] total 46 [2024-12-02 14:40:21,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911098279] [2024-12-02 14:40:21,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:40:21,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-12-02 14:40:21,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:40:21,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-12-02 14:40:21,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1939, Unknown=0, NotChecked=0, Total=2070 [2024-12-02 14:40:21,227 INFO L87 Difference]: Start difference. First operand 160208 states and 189414 transitions. Second operand has 46 states, 46 states have (on average 6.934782608695652) internal successors, (319), 46 states have internal predecessors, (319), 0 states have call successors, (0), 0 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 14:42:02,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:42:02,016 INFO L93 Difference]: Finished difference Result 453497 states and 525530 transitions. [2024-12-02 14:42:02,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 637 states. [2024-12-02 14:42:02,016 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 6.934782608695652) internal successors, (319), 46 states have internal predecessors, (319), 0 states have call successors, (0), 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 114 [2024-12-02 14:42:02,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:42:02,385 INFO L225 Difference]: With dead ends: 453497 [2024-12-02 14:42:02,385 INFO L226 Difference]: Without dead ends: 385957 [2024-12-02 14:42:02,471 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 875 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 679 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208507 ImplicationChecksByTransitivity, 82.7s TimeCoverageRelationStatistics Valid=39034, Invalid=424046, Unknown=0, NotChecked=0, Total=463080 [2024-12-02 14:42:02,472 INFO L435 NwaCegarLoop]: 693 mSDtfsCounter, 17090 mSDsluCounter, 18311 mSDsCounter, 0 mSdLazyCounter, 21429 mSolverCounterSat, 477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17090 SdHoareTripleChecker+Valid, 19004 SdHoareTripleChecker+Invalid, 21906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 477 IncrementalHoareTripleChecker+Valid, 21429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2024-12-02 14:42:02,472 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17090 Valid, 19004 Invalid, 21906 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [477 Valid, 21429 Invalid, 0 Unknown, 0 Unchecked, 16.9s Time] [2024-12-02 14:42:02,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385957 states. [2024-12-02 14:42:04,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385957 to 160430. [2024-12-02 14:42:04,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160430 states, 160429 states have (on average 1.1822239121355864) internal successors, (189663), 160429 states have internal predecessors, (189663), 0 states have call successors, (0), 0 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 14:42:04,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160430 states to 160430 states and 189663 transitions. [2024-12-02 14:42:04,915 INFO L78 Accepts]: Start accepts. Automaton has 160430 states and 189663 transitions. Word has length 114 [2024-12-02 14:42:04,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:42:04,916 INFO L471 AbstractCegarLoop]: Abstraction has 160430 states and 189663 transitions. [2024-12-02 14:42:04,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 6.934782608695652) internal successors, (319), 46 states have internal predecessors, (319), 0 states have call successors, (0), 0 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 14:42:04,916 INFO L276 IsEmpty]: Start isEmpty. Operand 160430 states and 189663 transitions. [2024-12-02 14:42:04,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 14:42:04,920 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:42:04,920 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:42:04,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-12-02 14:42:05,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-12-02 14:42:05,120 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:42:05,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:42:05,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1102810633, now seen corresponding path program 1 times [2024-12-02 14:42:05,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:42:05,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049783702] [2024-12-02 14:42:05,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:42:05,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:42:05,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:42:05,553 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:42:05,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:42:05,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049783702] [2024-12-02 14:42:05,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049783702] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:42:05,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769998536] [2024-12-02 14:42:05,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:42:05,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:42:05,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:42:05,555 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:42:05,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 14:42:05,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:42:05,760 INFO L256 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-12-02 14:42:05,763 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:42:07,838 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 14:42:07,838 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:42:07,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769998536] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:42:07,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:42:07,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [18] total 37 [2024-12-02 14:42:07,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33186176] [2024-12-02 14:42:07,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:42:07,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-12-02 14:42:07,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:42:07,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-12-02 14:42:07,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1193, Unknown=0, NotChecked=0, Total=1332 [2024-12-02 14:42:07,839 INFO L87 Difference]: Start difference. First operand 160430 states and 189663 transitions. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 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 14:42:09,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:42:09,809 INFO L93 Difference]: Finished difference Result 192833 states and 227663 transitions. [2024-12-02 14:42:09,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-12-02 14:42:09,810 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 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 116 [2024-12-02 14:42:09,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:42:09,964 INFO L225 Difference]: With dead ends: 192833 [2024-12-02 14:42:09,964 INFO L226 Difference]: Without dead ends: 182999 [2024-12-02 14:42:09,996 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=284, Invalid=2068, Unknown=0, NotChecked=0, Total=2352 [2024-12-02 14:42:09,996 INFO L435 NwaCegarLoop]: 235 mSDtfsCounter, 656 mSDsluCounter, 2961 mSDsCounter, 0 mSdLazyCounter, 1805 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 3196 SdHoareTripleChecker+Invalid, 1811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:42:09,996 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [656 Valid, 3196 Invalid, 1811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1805 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 14:42:10,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182999 states. [2024-12-02 14:42:11,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182999 to 160430. [2024-12-02 14:42:11,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160430 states, 160429 states have (on average 1.1822176788485872) internal successors, (189662), 160429 states have internal predecessors, (189662), 0 states have call successors, (0), 0 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 14:42:11,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160430 states to 160430 states and 189662 transitions. [2024-12-02 14:42:11,744 INFO L78 Accepts]: Start accepts. Automaton has 160430 states and 189662 transitions. Word has length 116 [2024-12-02 14:42:11,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:42:11,744 INFO L471 AbstractCegarLoop]: Abstraction has 160430 states and 189662 transitions. [2024-12-02 14:42:11,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 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 14:42:11,744 INFO L276 IsEmpty]: Start isEmpty. Operand 160430 states and 189662 transitions. [2024-12-02 14:42:11,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 14:42:11,748 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:42:11,748 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:42:11,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 14:42:11,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:42:11,949 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:42:11,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:42:11,951 INFO L85 PathProgramCache]: Analyzing trace with hash -760199183, now seen corresponding path program 1 times [2024-12-02 14:42:11,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:42:11,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461354793] [2024-12-02 14:42:11,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:42:11,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:42:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:42:12,678 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:42:12,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:42:12,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461354793] [2024-12-02 14:42:12,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461354793] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:42:12,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726892157] [2024-12-02 14:42:12,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:42:12,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:42:12,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:42:12,680 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:42:12,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 14:42:12,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:42:12,854 INFO L256 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-12-02 14:42:12,856 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:42:13,883 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:42:13,883 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:42:13,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726892157] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:42:13,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:42:13,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [22] total 38 [2024-12-02 14:42:13,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593842369] [2024-12-02 14:42:13,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:42:13,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 14:42:13,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:42:13,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 14:42:13,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1292, Unknown=0, NotChecked=0, Total=1406 [2024-12-02 14:42:13,884 INFO L87 Difference]: Start difference. First operand 160430 states and 189662 transitions. Second operand has 18 states, 18 states have (on average 6.5) internal successors, (117), 18 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 14:42:15,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:42:15,088 INFO L93 Difference]: Finished difference Result 172378 states and 203650 transitions. [2024-12-02 14:42:15,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 14:42:15,089 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.5) internal successors, (117), 18 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2024-12-02 14:42:15,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:42:15,224 INFO L225 Difference]: With dead ends: 172378 [2024-12-02 14:42:15,224 INFO L226 Difference]: Without dead ends: 164264 [2024-12-02 14:42:15,254 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=197, Invalid=2253, Unknown=0, NotChecked=0, Total=2450 [2024-12-02 14:42:15,254 INFO L435 NwaCegarLoop]: 279 mSDtfsCounter, 515 mSDsluCounter, 3271 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 3550 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 14:42:15,254 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 3550 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1119 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 14:42:15,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164264 states. [2024-12-02 14:42:16,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164264 to 160467. [2024-12-02 14:42:16,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160467 states, 160466 states have (on average 1.1821818952301422) internal successors, (189700), 160466 states have internal predecessors, (189700), 0 states have call successors, (0), 0 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 14:42:16,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160467 states to 160467 states and 189700 transitions. [2024-12-02 14:42:16,852 INFO L78 Accepts]: Start accepts. Automaton has 160467 states and 189700 transitions. Word has length 117 [2024-12-02 14:42:16,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:42:16,852 INFO L471 AbstractCegarLoop]: Abstraction has 160467 states and 189700 transitions. [2024-12-02 14:42:16,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.5) internal successors, (117), 18 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 14:42:16,853 INFO L276 IsEmpty]: Start isEmpty. Operand 160467 states and 189700 transitions. [2024-12-02 14:42:16,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 14:42:16,857 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:42:16,857 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:42:16,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 14:42:17,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:42:17,057 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:42:17,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:42:17,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1468932627, now seen corresponding path program 1 times [2024-12-02 14:42:17,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:42:17,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140760318] [2024-12-02 14:42:17,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:42:17,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:42:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:42:17,715 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:42:17,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:42:17,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140760318] [2024-12-02 14:42:17,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140760318] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:42:17,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178704118] [2024-12-02 14:42:17,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:42:17,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:42:17,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:42:17,717 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:42:17,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 14:42:17,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:42:17,888 INFO L256 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-12-02 14:42:17,889 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:42:20,037 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:42:20,037 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:42:22,266 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:42:22,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178704118] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:42:22,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:42:22,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 21] total 56 [2024-12-02 14:42:22,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369067275] [2024-12-02 14:42:22,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:42:22,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-12-02 14:42:22,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:42:22,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-12-02 14:42:22,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=2848, Unknown=0, NotChecked=0, Total=3080 [2024-12-02 14:42:22,267 INFO L87 Difference]: Start difference. First operand 160467 states and 189700 transitions. Second operand has 56 states, 56 states have (on average 5.821428571428571) internal successors, (326), 56 states have internal predecessors, (326), 0 states have call successors, (0), 0 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 14:42:27,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:42:27,466 INFO L93 Difference]: Finished difference Result 202191 states and 238783 transitions. [2024-12-02 14:42:27,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-12-02 14:42:27,467 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 5.821428571428571) internal successors, (326), 56 states have internal predecessors, (326), 0 states have call successors, (0), 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 117 [2024-12-02 14:42:27,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:42:27,623 INFO L225 Difference]: With dead ends: 202191 [2024-12-02 14:42:27,623 INFO L226 Difference]: Without dead ends: 188273 [2024-12-02 14:42:27,658 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 197 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1730 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=632, Invalid=6174, Unknown=0, NotChecked=0, Total=6806 [2024-12-02 14:42:27,659 INFO L435 NwaCegarLoop]: 415 mSDtfsCounter, 1339 mSDsluCounter, 12403 mSDsCounter, 0 mSdLazyCounter, 5067 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 12818 SdHoareTripleChecker+Invalid, 5091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 5067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:42:27,659 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1339 Valid, 12818 Invalid, 5091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 5067 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-12-02 14:42:27,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188273 states. [2024-12-02 14:42:28,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188273 to 159047. [2024-12-02 14:42:28,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159047 states, 159046 states have (on average 1.1820982608805) internal successors, (188008), 159046 states have internal predecessors, (188008), 0 states have call successors, (0), 0 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 14:42:28,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159047 states to 159047 states and 188008 transitions. [2024-12-02 14:42:28,942 INFO L78 Accepts]: Start accepts. Automaton has 159047 states and 188008 transitions. Word has length 117 [2024-12-02 14:42:28,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:42:28,942 INFO L471 AbstractCegarLoop]: Abstraction has 159047 states and 188008 transitions. [2024-12-02 14:42:28,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 5.821428571428571) internal successors, (326), 56 states have internal predecessors, (326), 0 states have call successors, (0), 0 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 14:42:28,942 INFO L276 IsEmpty]: Start isEmpty. Operand 159047 states and 188008 transitions. [2024-12-02 14:42:28,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 14:42:28,947 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:42:28,947 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:42:28,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 14:42:29,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:42:29,147 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:42:29,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:42:29,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1001144617, now seen corresponding path program 1 times [2024-12-02 14:42:29,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:42:29,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113316194] [2024-12-02 14:42:29,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:42:29,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:42:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:42:29,938 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:42:29,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:42:29,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113316194] [2024-12-02 14:42:29,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113316194] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:42:29,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127417107] [2024-12-02 14:42:29,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:42:29,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:42:29,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:42:29,940 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:42:29,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 14:42:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:42:30,119 INFO L256 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-12-02 14:42:30,120 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:42:33,109 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:42:33,109 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:42:33,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127417107] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:42:33,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:42:33,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [20] total 49 [2024-12-02 14:42:33,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259589608] [2024-12-02 14:42:33,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:42:33,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-12-02 14:42:33,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:42:33,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-12-02 14:42:33,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=2136, Unknown=0, NotChecked=0, Total=2352 [2024-12-02 14:42:33,110 INFO L87 Difference]: Start difference. First operand 159047 states and 188008 transitions. Second operand has 31 states, 31 states have (on average 3.774193548387097) internal successors, (117), 30 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 14:42:37,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:42:37,166 INFO L93 Difference]: Finished difference Result 189851 states and 224125 transitions. [2024-12-02 14:42:37,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 14:42:37,166 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.774193548387097) internal successors, (117), 30 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2024-12-02 14:42:37,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:42:37,345 INFO L225 Difference]: With dead ends: 189851 [2024-12-02 14:42:37,345 INFO L226 Difference]: Without dead ends: 181738 [2024-12-02 14:42:37,382 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 927 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=485, Invalid=4207, Unknown=0, NotChecked=0, Total=4692 [2024-12-02 14:42:37,383 INFO L435 NwaCegarLoop]: 204 mSDtfsCounter, 1135 mSDsluCounter, 4019 mSDsCounter, 0 mSdLazyCounter, 4858 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 4223 SdHoareTripleChecker+Invalid, 4866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 4858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-12-02 14:42:37,383 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 4223 Invalid, 4866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 4858 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-12-02 14:42:37,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181738 states. [2024-12-02 14:42:38,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181738 to 159085. [2024-12-02 14:42:38,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159085 states, 159084 states have (on average 1.1820610495084358) internal successors, (188047), 159084 states have internal predecessors, (188047), 0 states have call successors, (0), 0 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 14:42:38,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159085 states to 159085 states and 188047 transitions. [2024-12-02 14:42:38,775 INFO L78 Accepts]: Start accepts. Automaton has 159085 states and 188047 transitions. Word has length 117 [2024-12-02 14:42:38,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:42:38,775 INFO L471 AbstractCegarLoop]: Abstraction has 159085 states and 188047 transitions. [2024-12-02 14:42:38,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.774193548387097) internal successors, (117), 30 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 14:42:38,776 INFO L276 IsEmpty]: Start isEmpty. Operand 159085 states and 188047 transitions. [2024-12-02 14:42:38,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-12-02 14:42:38,780 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:42:38,780 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:42:38,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-02 14:42:38,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:42:38,980 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:42:38,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:42:38,981 INFO L85 PathProgramCache]: Analyzing trace with hash 37904127, now seen corresponding path program 1 times [2024-12-02 14:42:38,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:42:38,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551954186] [2024-12-02 14:42:38,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:42:38,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:42:39,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:42:39,818 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:42:39,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:42:39,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551954186] [2024-12-02 14:42:39,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551954186] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:42:39,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093816418] [2024-12-02 14:42:39,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:42:39,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:42:39,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:42:39,820 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:42:39,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 14:42:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:42:40,013 INFO L256 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-12-02 14:42:40,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:42:42,013 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:42:42,013 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:42:42,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093816418] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:42:42,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:42:42,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [21] total 43 [2024-12-02 14:42:42,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471265763] [2024-12-02 14:42:42,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:42:42,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-12-02 14:42:42,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:42:42,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-12-02 14:42:42,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1672, Unknown=0, NotChecked=0, Total=1806 [2024-12-02 14:42:42,014 INFO L87 Difference]: Start difference. First operand 159085 states and 188047 transitions. Second operand has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 23 states have internal predecessors, (118), 0 states have call successors, (0), 0 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 14:42:44,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:42:44,737 INFO L93 Difference]: Finished difference Result 190073 states and 224335 transitions. [2024-12-02 14:42:44,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-12-02 14:42:44,738 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 23 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2024-12-02 14:42:44,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:42:44,888 INFO L225 Difference]: With dead ends: 190073 [2024-12-02 14:42:44,888 INFO L226 Difference]: Without dead ends: 181959 [2024-12-02 14:42:44,921 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=339, Invalid=3567, Unknown=0, NotChecked=0, Total=3906 [2024-12-02 14:42:44,921 INFO L435 NwaCegarLoop]: 201 mSDtfsCounter, 1073 mSDsluCounter, 2651 mSDsCounter, 0 mSdLazyCounter, 3187 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 2852 SdHoareTripleChecker+Invalid, 3195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 3187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-02 14:42:44,921 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 2852 Invalid, 3195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 3187 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-02 14:42:45,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181959 states. [2024-12-02 14:42:45,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181959 to 159042. [2024-12-02 14:42:46,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159042 states, 159041 states have (on average 1.1820851227042084) internal successors, (188000), 159041 states have internal predecessors, (188000), 0 states have call successors, (0), 0 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 14:42:46,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159042 states to 159042 states and 188000 transitions. [2024-12-02 14:42:46,183 INFO L78 Accepts]: Start accepts. Automaton has 159042 states and 188000 transitions. Word has length 118 [2024-12-02 14:42:46,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:42:46,183 INFO L471 AbstractCegarLoop]: Abstraction has 159042 states and 188000 transitions. [2024-12-02 14:42:46,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 23 states have internal predecessors, (118), 0 states have call successors, (0), 0 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 14:42:46,183 INFO L276 IsEmpty]: Start isEmpty. Operand 159042 states and 188000 transitions. [2024-12-02 14:42:46,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-12-02 14:42:46,188 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:42:46,188 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:42:46,194 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-12-02 14:42:46,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2024-12-02 14:42:46,388 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:42:46,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:42:46,389 INFO L85 PathProgramCache]: Analyzing trace with hash 22230431, now seen corresponding path program 1 times [2024-12-02 14:42:46,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:42:46,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733156748] [2024-12-02 14:42:46,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:42:46,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:42:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:42:47,556 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:42:47,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:42:47,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733156748] [2024-12-02 14:42:47,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733156748] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:42:47,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338656836] [2024-12-02 14:42:47,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:42:47,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:42:47,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:42:47,558 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:42:47,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63ec6fb9-e1e5-4b13-8a1a-8f36ce32b373/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 14:42:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:42:47,736 INFO L256 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-12-02 14:42:47,737 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:42:49,913 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:42:49,914 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:42:53,180 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:42:53,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338656836] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:42:53,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:42:53,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 27, 24] total 72 [2024-12-02 14:42:53,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355600889] [2024-12-02 14:42:53,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:42:53,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-12-02 14:42:53,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:42:53,181 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-12-02 14:42:53,181 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=4754, Unknown=0, NotChecked=0, Total=5112 [2024-12-02 14:42:53,181 INFO L87 Difference]: Start difference. First operand 159042 states and 188000 transitions. Second operand has 72 states, 72 states have (on average 4.638888888888889) internal successors, (334), 72 states have internal predecessors, (334), 0 states have call successors, (0), 0 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 14:44:13,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:44:13,149 INFO L93 Difference]: Finished difference Result 400173 states and 468723 transitions. [2024-12-02 14:44:13,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 423 states. [2024-12-02 14:44:13,150 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 4.638888888888889) internal successors, (334), 72 states have internal predecessors, (334), 0 states have call successors, (0), 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 119 [2024-12-02 14:44:13,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:44:13,505 INFO L225 Difference]: With dead ends: 400173 [2024-12-02 14:44:13,505 INFO L226 Difference]: Without dead ends: 367983 [2024-12-02 14:44:13,565 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 679 GetRequests, 190 SyntacticMatches, 1 SemanticMatches, 488 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94589 ImplicationChecksByTransitivity, 68.5s TimeCoverageRelationStatistics Valid=17250, Invalid=222360, Unknown=0, NotChecked=0, Total=239610 [2024-12-02 14:44:13,566 INFO L435 NwaCegarLoop]: 724 mSDtfsCounter, 17663 mSDsluCounter, 27380 mSDsCounter, 0 mSdLazyCounter, 17733 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17663 SdHoareTripleChecker+Valid, 28104 SdHoareTripleChecker+Invalid, 18011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 17733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:44:13,566 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17663 Valid, 28104 Invalid, 18011 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [278 Valid, 17733 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2024-12-02 14:44:13,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367983 states. [2024-12-02 14:44:15,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367983 to 156421. [2024-12-02 14:44:15,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156421 states, 156420 states have (on average 1.1815880322209436) internal successors, (184824), 156420 states have internal predecessors, (184824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)